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Rock Springs Capital Management LP

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13F filer, CIK 1595725, Baltimore, MD

Rock Springs Capital Management LP reported $1,696,654,121 across 100 holdings for the quarter ended 2026-03-31, in a 13F-HR filed 2026-05-15. Its ten largest share positions make up 40.6% of the portfolio.

Filed (acceptance time not in the bulk data set), ingested 13F-HR 0001172661-26-002225

Period
2026-03-31
Reported value
$1.7B
Holdings
100
Top 10 weight
40.6%
New
11
Sold out
10

Largest buys vs the previous quarter

SecurityShares changeApprox. value
MDGLadded+31,381$16.4M
MMEDnew+1,055,000$15.7M
BSXadded+116,250$7.29M
HTFLadded+294,800$7.17M
PTCTadded+99,919$6.81M

Ranked by the share change valued at this quarter's implied price (value over shares in the 13F). A position sold out is valued at the previous quarter's price, its last report.

Largest sells vs the previous quarter

SecurityShares changeApprox. value
EXASexited-601,800-$61.1M
CDTXexited-204,878-$45.3M
FOLDreduced-1,908,869-$27.6M
XBIreduced-192,000-$24.5M
TVTXreduced-732,368-$21.8M

Ranked by the share change valued at this quarter's implied price (value over shares in the 13F). A position sold out is valued at the previous quarter's price, its last report.

Holdings, Q1 2026

Share positions as resolved from 13F-HR 0001172661-26-002225, largest first. % of portfolio is the value over $1,696,654,121, the sum of the share positions whose value is usable for ratios (method).

SecurityHistorySharesValue% of portfolioChangeLatest eventTimeline
RVMDREVOLUTION MEDICINES INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q2: restricted; 2024Q3: 1,009,945 shares; 2024Q4: 1,213,257 shares; 2025Q1: 1,281,640 shares; 2025Q2: 1,330,960 shares; 2025Q3: 1,335,270 shares; 2025Q4: 1,335,270 shares; 2026Q1: 1,209,465 shares 1,209,465$118M6.93%-125,805Timeline
LLYELI LILLY & COQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q2: restricted; 2024Q3: 142,000 shares; 2024Q4: 144,500 shares; 2025Q1: 113,500 shares; 2025Q2: 116,500 shares; 2025Q3: 105,400 shares; 2025Q4: 105,400 shares; 2026Q1: 98,700 shares 98,700$90.8M5.35%-6,700Timeline
MDGLMADRIGAL PHARMACEUTICALS INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q2: restricted; 2024Q3: 263,062 shares; 2024Q4: 265,212 shares; 2025Q1: 166,698 shares; 2025Q2: 140,296 shares; 2025Q3: 137,746 shares; 2025Q4: 139,618 shares; 2026Q1: 170,999 shares 170,999$89.5M5.28%+31,381Timeline
MIRMMIRUM PHARMACEUTICALS INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q2: restricted; 2024Q3: 1,580,488 shares; 2024Q4: 1,471,564 shares; 2025Q1: 951,765 shares; 2025Q2: 818,206 shares; 2025Q3: 761,126 shares; 2025Q4: 762,294 shares; 2026Q1: 811,294 shares 811,294$74.9M4.42%+49,000Timeline
ARGXARGENX SEQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q2: restricted; 2024Q3: 233,500 shares; 2024Q4: 229,600 shares; 2025Q1: 175,750 shares; 2025Q2: 175,750 shares; 2025Q3: 142,750 shares; 2025Q4: 103,250 shares; 2026Q1: 98,500 shares 98,500$71.9M4.24%-4,750Timeline
RYTMRHYTHM PHARMACEUTICALS INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q2: restricted; 2024Q3: 1,228,093 shares; 2024Q4: 1,162,718 shares; 2025Q1: 834,188 shares; 2025Q2: 861,153 shares; 2025Q3: 717,102 shares; 2025Q4: 695,010 shares; 2026Q1: 689,748 shares 689,748$60M3.54%-5,262Timeline
INSMINSMED INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q2: restricted; 2024Q3: 683,344 shares; 2024Q4: 550,000 shares; 2025Q1: 515,900 shares; 2025Q2: 525,000 shares; 2025Q3: 385,000 shares; 2025Q4: 319,250 shares; 2026Q1: 314,300 shares 314,300$51.4M3.03%-4,950Timeline
ASNDASCENDIS PHARMA A/SQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q2: restricted; 2024Q3: 325,000 shares; 2024Q4: 305,000 shares; 2025Q1: 216,000 shares; 2025Q2: 217,000 shares; 2025Q3: 214,500 shares; 2025Q4: 203,500 shares; 2026Q1: 194,000 shares 194,000$44.4M2.62%-9,500Timeline
XENEXENON PHARMACEUTICALS INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q2: restricted; 2024Q3: 1,316,477 shares; 2024Q4: 1,251,859 shares; 2025Q1: 931,681 shares; 2025Q2: 931,681 shares; 2025Q3: 851,744 shares; 2025Q4: 787,788 shares; 2026Q1: 763,020 shares 763,020$44.4M2.62%-24,768Timeline
TVTXTRAVERE THERAPEUTICS INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q2: restricted; 2024Q3: 4,684,476 shares; 2024Q4: 4,973,649 shares; 2025Q1: 2,921,196 shares; 2025Q2: 1,908,208 shares; 2025Q3: 2,164,773 shares; 2025Q4: 2,210,322 shares; 2026Q1: 1,477,954 shares 1,477,954$43.9M2.59%-732,368Timeline
KYMRKYMERA THERAPEUTICS INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q2: restricted; 2024Q3: 1,049,386 shares; 2024Q4: 1,034,137 shares; 2025Q1: 794,437 shares; 2025Q2: 450,374 shares; 2025Q3: 450,374 shares; 2025Q4: 496,871 shares; 2026Q1: 496,871 shares 496,871$41.4M2.44%0Timeline
PENPENUMBRA INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q2: restricted; 2024Q3: 265,000 shares; 2024Q4: 240,000 shares; 2025Q1: 171,000 shares; 2025Q2: 128,500 shares; 2025Q3: 120,500 shares; 2025Q4: 120,500 shares; 2026Q1: 120,500 shares 120,500$39.6M2.33%0Timeline
ISRGINTUITIVE SURGICAL INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q2: restricted; 2024Q3: 270,000 shares; 2024Q4: 216,000 shares; 2025Q1: 102,000 shares; 2025Q2: 82,000 shares; 2025Q3: 82,000 shares; 2025Q4: 82,000 shares; 2026Q1: 82,000 shares 82,000$37.8M2.23%0Timeline
SRRKSCHOLAR ROCK HLDG CORPQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q2: restricted; 2024Q3: not reported; 2024Q4: 716,782 shares; 2025Q1: 761,541 shares; 2025Q2: 794,133 shares; 2025Q3: 794,133 shares; 2025Q4: 733,477 shares; 2026Q1: 739,816 shares 739,816$36.4M2.14%+6,339Timeline
ELVNENLIVEN THERAPEUTICS INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q2: restricted; 2024Q3: 428,571 shares; 2024Q4: 428,571 shares; 2025Q1: 465,871 shares; 2025Q2: 701,408 shares; 2025Q3: 686,107 shares; 2025Q4: 798,405 shares; 2026Q1: 826,500 shares 826,500$32.4M1.91%+28,095Timeline
BSXBOSTON SCIENTIFIC CORPQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q2: restricted; 2024Q3: 460,000 shares; 2024Q4: 460,000 shares; 2025Q1: 277,000 shares; 2025Q2: 355,000 shares; 2025Q3: 360,250 shares; 2025Q4: 399,050 shares; 2026Q1: 515,300 shares 515,300$32.3M1.91%+116,250Timeline
IRTCIRHYTHM HOLDINGS INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q2: restricted; 2024Q3: 397,500 shares; 2024Q4: 397,500 shares; 2025Q1: 254,300 shares; 2025Q2: 242,500 shares; 2025Q3: 235,000 shares; 2025Q4: 235,000 shares; 2026Q1: 261,750 shares 261,750$30.9M1.82%+26,750Timeline
GPCRSTRUCTURE THERAPEUTICS INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q2: restricted; 2024Q3: 1,063,910 shares; 2024Q4: 1,080,963 shares; 2025Q1: 1,132,979 shares; 2025Q2: 1,135,879 shares; 2025Q3: 951,154 shares; 2025Q4: 748,236 shares; 2026Q1: 640,217 shares 640,217$30.9M1.82%-108,019Timeline
AGIOAGIOS PHARMACEUTICALS INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q2: restricted; 2024Q3: 699,389 shares; 2024Q4: 471,086 shares; 2025Q1: 342,180 shares; 2025Q2: 989,745 shares; 2025Q3: 958,542 shares; 2025Q4: 799,163 shares; 2026Q1: 799,163 shares 799,163$27M1.59%0Timeline
RAREULTRAGENYX PHARMACEUTICAL INQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q2: restricted; 2024Q3: 1,978,272 shares; 2024Q4: 1,739,813 shares; 2025Q1: 1,394,434 shares; 2025Q2: 1,391,072 shares; 2025Q3: 1,246,341 shares; 2025Q4: 1,267,241 shares; 2026Q1: 1,218,773 shares 1,218,773$25.5M1.5%-48,468Timeline
ALNYALNYLAM PHARMACEUTICALS INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q2: restricted; 2024Q3: 250,000 shares; 2024Q4: 256,200 shares; 2025Q1: 143,250 shares; 2025Q2: 100,000 shares; 2025Q3: 74,250 shares; 2025Q4: 71,250 shares; 2026Q1: 74,000 shares 74,000$24.5M1.44%+2,750Timeline
COGTCOGENT BIOSCIENCES INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q2: restricted; 2024Q3: not reported; 2024Q4: not reported; 2025Q1: not reported; 2025Q2: 800,199 shares; 2025Q3: 1,008,308 shares; 2025Q4: 849,030 shares; 2026Q1: 624,155 shares 624,155$24M1.42%-224,875Timeline
THCTENET HEALTHCARE CORPQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q2: restricted; 2024Q3: not reported; 2024Q4: 129,200 shares; 2025Q1: 130,000 shares; 2025Q2: 130,000 shares; 2025Q3: 125,000 shares; 2025Q4: 125,000 shares; 2026Q1: 125,000 shares 125,000$23.6M1.39%0Timeline
DXCMDEXCOM INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q2: restricted; 2024Q3: 524,000 shares; 2024Q4: 353,000 shares; 2025Q1: 397,650 shares; 2025Q2: 286,750 shares; 2025Q3: 316,900 shares; 2025Q4: 347,300 shares; 2026Q1: 355,600 shares 355,600$22.3M1.32%+8,300Timeline
CLDXCELLDEX THERAPEUTICS INC NEWQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q2: restricted; 2024Q3: 1,103,778 shares; 2024Q4: 1,222,182 shares; 2025Q1: 812,653 shares; 2025Q2: 812,653 shares; 2025Q3: 721,538 shares; 2025Q4: 692,538 shares; 2026Q1: 650,270 shares 650,270$20.6M1.22%-42,268Timeline
VERAVERA THERAPEUTICS INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q2: restricted; 2024Q3: 383,492 shares; 2024Q4: 487,863 shares; 2025Q1: 520,796 shares; 2025Q2: 617,396 shares; 2025Q3: 617,396 shares; 2025Q4: 568,579 shares; 2026Q1: 503,585 shares 503,585$20.3M1.19%-64,994Timeline
NBIXNEUROCRINE BIOSCIENCES INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q2: restricted; 2024Q3: 939,000 shares; 2024Q4: 720,500 shares; 2025Q1: 279,000 shares; 2025Q2: 88,800 shares; 2025Q3: 89,750 shares; 2025Q4: 125,500 shares; 2026Q1: 150,450 shares 150,450$19.8M1.17%+24,950Timeline
ACLXARCELLX INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q2: restricted; 2024Q3: not reported; 2024Q4: not reported; 2025Q1: not reported; 2025Q2: 186,314 shares; 2025Q3: 178,982 shares; 2025Q4: 169,859 shares; 2026Q1: 169,859 shares 169,859$19.5M1.15%0Timeline
NAMSNEWAMSTERDAM PHARMA COMPANYQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q2: restricted; 2024Q3: 353,319 shares; 2024Q4: 767,522 shares; 2025Q1: 536,111 shares; 2025Q2: 536,111 shares; 2025Q3: 595,929 shares; 2025Q4: 557,194 shares; 2026Q1: 588,794 shares 588,794$18.8M1.11%+31,600Timeline
PHVSPHARVARIS N VQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q2: restricted; 2024Q3: 756,931 shares; 2024Q4: 775,131 shares; 2025Q1: 623,402 shares; 2025Q2: 623,402 shares; 2025Q3: 623,402 shares; 2025Q4: 623,402 shares; 2026Q1: 645,533 shares 645,533$18.2M1.07%+22,131Timeline
ERASERASCA INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q2: restricted; 2024Q3: not reported; 2024Q4: not reported; 2025Q1: not reported; 2025Q2: not reported; 2025Q3: not reported; 2025Q4: 951,710 shares; 2026Q1: 1,103,469 shares 1,103,469$17.9M1.05%+151,759Timeline
DYNDYNE THERAPEUTICS INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q2: restricted; 2024Q3: 461,028 shares; 2024Q4: 474,528 shares; 2025Q1: 524,499 shares; 2025Q2: 580,998 shares; 2025Q3: 824,061 shares; 2025Q4: 912,955 shares; 2026Q1: 972,198 shares 972,198$17.6M1.04%+59,243Timeline
CMPXCOMPASS THERAPEUTICS INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q2: restricted; 2024Q3: 5,629,239 shares; 2024Q4: 5,779,575 shares; 2025Q1: 4,962,955 shares; 2025Q2: 4,962,955 shares; 2025Q3: 4,474,702 shares; 2025Q4: 3,927,202 shares; 2026Q1: 3,305,308 shares 3,305,308$17.5M1.03%-621,894Timeline
ACRSACLARIS THERAPEUTICS INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q2: restricted; 2024Q3: 2,753,495 shares; 2024Q4: 6,204,309 shares; 2025Q1: 5,046,309 shares; 2025Q2: 4,769,309 shares; 2025Q3: 4,609,309 shares; 2025Q4: 4,453,741 shares; 2026Q1: 4,472,650 shares 4,472,650$16.8M0.99%+18,909Timeline
TARSTARSUS PHARMACEUTICALS INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q2: restricted; 2024Q3: not reported; 2024Q4: 110,889 shares; 2025Q1: 354,376 shares; 2025Q2: 373,750 shares; 2025Q3: 288,344 shares; 2025Q4: 260,344 shares; 2026Q1: 225,179 shares 225,179$15.8M0.93%-35,165Timeline
MMEDMINIMED GROUP INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q2: restricted; 2024Q3: not reported; 2024Q4: not reported; 2025Q1: not reported; 2025Q2: not reported; 2025Q3: not reported; 2025Q4: not reported; 2026Q1: 1,055,000 shares 1,055,000$15.7M0.93%newTimeline
ZLABZAI LAB LTDQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q2: restricted; 2024Q3: 1,315,673 shares; 2024Q4: 1,305,337 shares; 2025Q1: 904,592 shares; 2025Q2: 871,392 shares; 2025Q3: 791,193 shares; 2025Q4: 811,546 shares; 2026Q1: 814,707 shares 814,707$15.3M0.9%+3,161Timeline
UNHUNITEDHEALTH GROUP INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q2: restricted; 2024Q3: 294,250 shares; 2024Q4: 176,000 shares; 2025Q1: 100,500 shares; 2025Q2: 50,500 shares; 2025Q3: not reported; 2025Q4: 40,800 shares; 2026Q1: 53,000 shares 53,000$14.3M0.85%+12,200Timeline
CNTACENTESSA PHARMACEUTICALS PLCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q2: restricted; 2024Q3: not reported; 2024Q4: not reported; 2025Q1: not reported; 2025Q2: not reported; 2025Q3: 69,240 shares; 2025Q4: 324,015 shares; 2026Q1: 351,828 shares 351,828$14M0.82%+27,813Timeline
HTFLHEARTFLOW INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q2: restricted; 2024Q3: not reported; 2024Q4: not reported; 2025Q1: not reported; 2025Q2: not reported; 2025Q3: 250,000 shares; 2025Q4: 277,700 shares; 2026Q1: 572,500 shares 572,500$13.9M0.82%+294,800Timeline
ARDXARDELYX INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q2: restricted; 2024Q3: not reported; 2024Q4: 1,463,629 shares; 2025Q1: 1,604,975 shares; 2025Q2: 2,286,273 shares; 2025Q3: 2,286,273 shares; 2025Q4: 2,299,473 shares; 2026Q1: 2,299,473 shares 2,299,473$13.8M0.81%0Timeline
SMMTSUMMIT THERAPEUTICS INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q2: restricted; 2024Q3: 1,040,000 shares; 2024Q4: 1,054,000 shares; 2025Q1: 995,000 shares; 2025Q2: 710,000 shares; 2025Q3: 710,000 shares; 2025Q4: 710,000 shares; 2026Q1: 710,000 shares 710,000$13.5M0.79%0Timeline
AZTAAZENTA INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q2: restricted; 2024Q3: 532,500 shares; 2024Q4: 475,000 shares; 2025Q1: 475,000 shares; 2025Q2: 530,400 shares; 2025Q3: 540,400 shares; 2025Q4: 569,100 shares; 2026Q1: 569,100 shares 569,100$12M0.71%0Timeline
MLYSMINERALYS THERAPEUTICS INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q2: restricted; 2024Q3: not reported; 2024Q4: not reported; 2025Q1: 320,813 shares; 2025Q2: 324,513 shares; 2025Q3: 408,313 shares; 2025Q4: 427,596 shares; 2026Q1: 439,751 shares 439,751$11.9M0.7%+12,155Timeline
DHRDANAHER CORP DELQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q2: restricted; 2024Q3: not reported; 2024Q4: not reported; 2025Q1: 58,800 shares; 2025Q2: 59,000 shares; 2025Q3: 61,500 shares; 2025Q4: 61,500 shares; 2026Q1: 61,500 shares 61,500$11.7M0.69%0Timeline
PTCTPTC THERAPEUTICS INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q2: restricted; 2024Q3: not reported; 2024Q4: not reported; 2025Q1: not reported; 2025Q2: not reported; 2025Q3: not reported; 2025Q4: 61,879 shares; 2026Q1: 161,798 shares 161,798$11M0.65%+99,919Timeline
CAICARIS LIFE SCIENCES INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q2: restricted; 2024Q3: not reported; 2024Q4: not reported; 2025Q1: not reported; 2025Q2: 793,651 shares; 2025Q3: 793,651 shares; 2025Q4: 687,500 shares; 2026Q1: 563,000 shares 563,000$10.1M0.59%-124,500Timeline
ZBIOZENAS BIOPHARMA INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q2: restricted; 2024Q3: 878,667 shares; 2024Q4: 878,667 shares; 2025Q1: 878,667 shares; 2025Q2: 640,467 shares; 2025Q3: 580,677 shares; 2025Q4: 502,077 shares; 2026Q1: 502,077 shares 502,077$9.82M0.58%0Timeline
BCAXBICARA THERAPEUTICS INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q2: restricted; 2024Q3: 445,975 shares; 2024Q4: 445,975 shares; 2025Q1: 336,070 shares; 2025Q2: 336,070 shares; 2025Q3: 370,666 shares; 2025Q4: 429,095 shares; 2026Q1: 489,095 shares 489,095$9.73M0.57%+60,000Timeline
BBIOBRIDGEBIO PHARMA INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q2: restricted; 2024Q3: not reported; 2024Q4: not reported; 2025Q1: not reported; 2025Q2: not reported; 2025Q3: 85,000 shares; 2025Q4: 103,500 shares; 2026Q1: 128,250 shares 128,250$9.52M0.56%+24,750Timeline
SLNOSOLENO THERAPEUTICS INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q2: restricted; 2024Q3: not reported; 2024Q4: 124,095 shares; 2025Q1: 124,095 shares; 2025Q2: 154,528 shares; 2025Q3: 154,528 shares; 2025Q4: 247,053 shares; 2026Q1: 257,253 shares 257,253$8.61M0.51%+10,200Timeline
MBXMBX BIOSCIENCES INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q2: restricted; 2024Q3: not reported; 2024Q4: not reported; 2025Q1: not reported; 2025Q2: not reported; 2025Q3: 282,624 shares; 2025Q4: 282,624 shares; 2026Q1: 287,967 shares 287,967$8.6M0.51%+5,343Timeline
TNGXTANGO THERAPEUTICS INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q2: restricted; 2024Q3: not reported; 2024Q4: not reported; 2025Q1: not reported; 2025Q2: not reported; 2025Q3: not reported; 2025Q4: 386,915 shares; 2026Q1: 386,915 shares 386,915$8.09M0.48%0Timeline
REGNREGENERON PHARMACEUTICALSQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q2: restricted; 2024Q3: not reported; 2024Q4: not reported; 2025Q1: 2,800 shares; 2025Q2: 11,300 shares; 2025Q3: 11,300 shares; 2025Q4: 10,100 shares; 2026Q1: 10,100 shares 10,100$7.8M0.46%0Timeline
IMNMIMMUNOME INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q2: restricted; 2024Q3: not reported; 2024Q4: not reported; 2025Q1: not reported; 2025Q2: not reported; 2025Q3: not reported; 2025Q4: 347,666 shares; 2026Q1: 347,666 shares 347,666$7.6M0.45%0Timeline
AMLXAMYLYX PHARMACEUTICALS INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q2: restricted; 2024Q3: not reported; 2024Q4: not reported; 2025Q1: 343,228 shares; 2025Q2: 499,764 shares; 2025Q3: 499,764 shares; 2025Q4: 499,764 shares; 2026Q1: 499,764 shares 499,764$6.95M0.41%0Timeline
OMDAOMADA HEALTH INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q2: restricted; 2024Q3: not reported; 2024Q4: not reported; 2025Q1: not reported; 2025Q2: 919,951 shares; 2025Q3: 919,950 shares; 2025Q4: 740,000 shares; 2026Q1: 541,000 shares 541,000$6.8M0.4%-199,000Timeline
INSPINSPIRE MED SYS INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q2: restricted; 2024Q3: 130,000 shares; 2024Q4: 130,000 shares; 2025Q1: 99,250 shares; 2025Q2: 107,500 shares; 2025Q3: 110,500 shares; 2025Q4: 131,000 shares; 2026Q1: 131,800 shares 131,800$6.8M0.4%+800Timeline
APLSAPELLIS PHARMACEUTICALS INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q2: restricted; 2024Q3: 80,000 shares; 2024Q4: 80,000 shares; 2025Q1: 80,000 shares; 2025Q2: 84,300 shares; 2025Q3: 92,000 shares; 2025Q4: 150,500 shares; 2026Q1: 162,750 shares 162,750$6.55M0.39%+12,250Timeline
ALKSALKERMES PLCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q2: restricted; 2024Q3: not reported; 2024Q4: not reported; 2025Q1: not reported; 2025Q2: not reported; 2025Q3: 106,537 shares; 2025Q4: 139,228 shares; 2026Q1: 183,986 shares 183,986$6.51M0.38%+44,758Timeline
EVHEVOLENT HEALTH INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q2: restricted; 2024Q3: 2,070,000 shares; 2024Q4: 2,060,000 shares; 2025Q1: 2,695,700 shares; 2025Q2: 2,820,700 shares; 2025Q3: 2,950,000 shares; 2025Q4: 2,675,000 shares; 2026Q1: 2,675,000 shares 2,675,000$6.1M0.36%0Timeline
INDVINDIVIOR PHARMACEUTICALS INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q2: restricted; 2024Q3: not reported; 2024Q4: not reported; 2025Q1: not reported; 2025Q2: not reported; 2025Q3: not reported; 2025Q4: not reported; 2026Q1: 200,000 shares 200,000$6.1M0.36%newTimeline
TERNTERNS PHARMACEUTICALS INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q2: restricted; 2024Q3: not reported; 2024Q4: not reported; 2025Q1: not reported; 2025Q2: not reported; 2025Q3: not reported; 2025Q4: 108,481 shares; 2026Q1: 113,748 shares 113,748$6M0.35%+5,267Timeline
FOCLEDAP TMS S AQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q2: restricted; 2024Q3: 1,568,000 shares; 2024Q4: 1,591,800 shares; 2025Q1: 1,270,000 shares; 2025Q2: 1,270,000 shares; 2025Q3: 1,270,000 shares; 2025Q4: 1,286,500 shares; 2026Q1: 1,378,000 shares 1,378,000$5.13M0.3%+91,500Timeline
JANXJANUX THERAPEUTICS INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q2: restricted; 2024Q3: not reported; 2024Q4: 204,466 shares; 2025Q1: 204,466 shares; 2025Q2: 210,266 shares; 2025Q3: 210,366 shares; 2025Q4: 358,798 shares; 2026Q1: 367,009 shares 367,009$5.1M0.3%+8,211Timeline
PHRPHREESIA INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q2: restricted; 2024Q3: 2,282,500 shares; 2024Q4: 2,040,000 shares; 2025Q1: 1,148,336 shares; 2025Q2: 837,300 shares; 2025Q3: 749,116 shares; 2025Q4: 876,600 shares; 2026Q1: 600,400 shares 600,400$5.03M0.3%-276,200Timeline
TMOTHERMO FISHER SCIENTIFIC INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q2: restricted; 2024Q3: not reported; 2024Q4: not reported; 2025Q1: not reported; 2025Q2: 10,000 shares; 2025Q3: 10,000 shares; 2025Q4: 10,000 shares; 2026Q1: 10,000 shares 10,000$4.92M0.29%0Timeline
SYKSTRYKER CORPORATIONQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q2: restricted; 2024Q3: not reported; 2024Q4: not reported; 2025Q1: not reported; 2025Q2: not reported; 2025Q3: not reported; 2025Q4: not reported; 2026Q1: 14,800 shares 14,800$4.86M0.29%newTimeline
SIONSIONNA THERAPEUTICS INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q2: restricted; 2024Q3: not reported; 2024Q4: not reported; 2025Q1: 99,429 shares; 2025Q2: 99,429 shares; 2025Q3: 99,429 shares; 2025Q4: 99,429 shares; 2026Q1: 99,429 shares 99,429$3.99M0.23%0Timeline
RCUSARCUS BIOSCIENCES INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q2: restricted; 2024Q3: not reported; 2024Q4: not reported; 2025Q1: not reported; 2025Q2: not reported; 2025Q3: not reported; 2025Q4: 180,000 shares; 2026Q1: 180,000 shares 180,000$3.89M0.23%0Timeline
XBISPDR SERIES TRUSTQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q2: restricted; 2024Q3: not reported; 2024Q4: not reported; 2025Q1: not reported; 2025Q2: 151,750 shares; 2025Q3: 151,750 shares; 2025Q4: 222,000 shares; 2026Q1: 30,000 shares 30,000$3.83M0.23%-192,000Timeline
ATECALPHATEC HLDGS INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q2: restricted; 2024Q3: not reported; 2024Q4: 200,000 shares; 2025Q1: 267,500 shares; 2025Q2: 267,500 shares; 2025Q3: 302,500 shares; 2025Q4: 302,500 shares; 2026Q1: 350,000 shares 350,000$3.81M0.22%+47,500Timeline
PCVXVAXCYTE INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q2: restricted; 2024Q3: not reported; 2024Q4: not reported; 2025Q1: not reported; 2025Q2: 11,100 shares; 2025Q3: 11,100 shares; 2025Q4: 47,000 shares; 2026Q1: 60,250 shares 60,250$3.5M0.21%+13,250Timeline
EYPTEYEPOINT INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q2: restricted; 2024Q3: not reported; 2024Q4: not reported; 2025Q1: not reported; 2025Q2: not reported; 2025Q3: 31,655 shares; 2025Q4: 258,739 shares; 2026Q1: 258,739 shares 258,739$3.34M0.2%0Timeline
NVONOVO-NORDISK A SQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q2: restricted; 2024Q3: 132,000 shares; 2024Q4: not reported; 2025Q1: not reported; 2025Q2: not reported; 2025Q3: not reported; 2025Q4: not reported; 2026Q1: 90,000 shares 90,000$3.31M0.19%newTimeline
OCULOCULAR THERAPEUTIX INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q2: restricted; 2024Q3: not reported; 2024Q4: not reported; 2025Q1: not reported; 2025Q2: not reported; 2025Q3: 300,000 shares; 2025Q4: 345,820 shares; 2026Q1: 383,716 shares 383,716$3.25M0.19%+37,896Timeline
VKTXVIKING THERAPEUTICS INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q2: restricted; 2024Q3: not reported; 2024Q4: not reported; 2025Q1: not reported; 2025Q2: not reported; 2025Q3: not reported; 2025Q4: not reported; 2026Q1: 96,000 shares 96,000$3.12M0.18%newTimeline
CYTKCYTOKINETICS INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q2: restricted; 2024Q3: 206,108 shares; 2024Q4: not reported; 2025Q1: not reported; 2025Q2: not reported; 2025Q3: not reported; 2025Q4: 35,853 shares; 2026Q1: 45,364 shares 45,364$2.99M0.18%+9,511Timeline
IPSCCENTURY THERAPEUTICS INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q2: restricted; 2024Q3: not reported; 2024Q4: not reported; 2025Q1: not reported; 2025Q2: not reported; 2025Q3: not reported; 2025Q4: not reported; 2026Q1: 1,304,347 shares 1,304,347$2.95M0.17%newTimeline
CVSCVS HEALTH CORPQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q2: restricted; 2024Q3: not reported; 2024Q4: not reported; 2025Q1: not reported; 2025Q2: not reported; 2025Q3: not reported; 2025Q4: not reported; 2026Q1: 40,000 shares 40,000$2.87M0.17%newTimeline
ROIVROIVANT SCIENCES LTDQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q2: restricted; 2024Q3: not reported; 2024Q4: not reported; 2025Q1: not reported; 2025Q2: not reported; 2025Q3: not reported; 2025Q4: 88,750 shares; 2026Q1: 97,000 shares 97,000$2.69M0.16%+8,250Timeline
TLPHTALPHERA INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q2: restricted; 2024Q3: 316,460 shares; 2024Q4: 316,460 shares; 2025Q1: 316,460 shares; 2025Q2: 316,460 shares; 2025Q3: 3,589,186 shares; 2025Q4: 3,589,186 shares; 2026Q1: 3,589,186 shares 3,589,186$2.68M0.16%0Timeline
OLMAOLEMA PHARMACEUTICALS INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q2: restricted; 2024Q3: not reported; 2024Q4: not reported; 2025Q1: not reported; 2025Q2: not reported; 2025Q3: not reported; 2025Q4: 98,240 shares; 2026Q1: 170,378 shares 170,378$2.54M0.15%+72,138Timeline
SGRYSURGERY PARTNERS INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q2: restricted; 2024Q3: not reported; 2024Q4: not reported; 2025Q1: not reported; 2025Q2: not reported; 2025Q3: not reported; 2025Q4: 310,000 shares; 2026Q1: 208,000 shares 208,000$2.48M0.15%-102,000Timeline
LENZLENZ THERAPEUTICS INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q2: restricted; 2024Q3: not reported; 2024Q4: 29,305 shares; 2025Q1: 83,082 shares; 2025Q2: 83,982 shares; 2025Q3: 236,227 shares; 2025Q4: 257,460 shares; 2026Q1: 257,460 shares 257,460$2.36M0.14%0Timeline
EWEDWARDS LIFESCIENCES CORPQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q2: restricted; 2024Q3: 576,900 shares; 2024Q4: 545,000 shares; 2025Q1: 255,000 shares; 2025Q2: 131,000 shares; 2025Q3: 88,000 shares; 2025Q4: 82,500 shares; 2026Q1: 28,900 shares 28,900$2.31M0.14%-53,600Timeline
DNTHDIANTHUS THERAPEUTICS INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q2: restricted; 2024Q3: not reported; 2024Q4: not reported; 2025Q1: not reported; 2025Q2: not reported; 2025Q3: not reported; 2025Q4: not reported; 2026Q1: 26,757 shares 26,757$2.25M0.13%newTimeline
NGNENEUROGENE INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q2: restricted; 2024Q3: not reported; 2024Q4: 95,407 shares; 2025Q1: 104,339 shares; 2025Q2: 104,339 shares; 2025Q3: 104,339 shares; 2025Q4: 104,339 shares; 2026Q1: 104,339 shares 104,339$2.1M0.12%0Timeline
AGLAGILON HEALTH INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q2: restricted; 2024Q3: not reported; 2024Q4: not reported; 2025Q1: not reported; 2025Q2: not reported; 2025Q3: not reported; 2025Q4: not reported; 2026Q1: 260,000 shares 260,000$2.06M0.12%newTimeline
CORTCORCEPT THERAPEUTICS INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q2: restricted; 2024Q3: not reported; 2024Q4: not reported; 2025Q1: not reported; 2025Q2: not reported; 2025Q3: not reported; 2025Q4: 50,250 shares; 2026Q1: 50,250 shares 50,250$2.03M0.12%0Timeline
ACHCACADIA HEALTHCARE COMPANY INQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q2: restricted; 2024Q3: 815,000 shares; 2024Q4: 583,500 shares; 2025Q1: 681,100 shares; 2025Q2: 696,000 shares; 2025Q3: 170,000 shares; 2025Q4: 120,000 shares; 2026Q1: 75,500 shares 75,500$1.77M0.1%-44,500Timeline
TEVATEVA PHARMACEUTICAL INDS LTDQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q2: restricted; 2024Q3: not reported; 2024Q4: not reported; 2025Q1: not reported; 2025Q2: not reported; 2025Q3: not reported; 2025Q4: 45,500 shares; 2026Q1: 45,500 shares 45,500$1.37M0.08%0Timeline
MLTXMOONLAKE IMMUNOTHERAPEUTICSQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q2: restricted; 2024Q3: not reported; 2024Q4: not reported; 2025Q1: not reported; 2025Q2: not reported; 2025Q3: 28,200 shares; 2025Q4: 61,700 shares; 2026Q1: 61,700 shares 61,700$1.15M0.07%0Timeline
JAZZJAZZ PHARMACEUTICALS PLCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q2: restricted; 2024Q3: not reported; 2024Q4: not reported; 2025Q1: not reported; 2025Q2: not reported; 2025Q3: not reported; 2025Q4: 1,750 shares; 2026Q1: 5,750 shares 5,750$1.09M0.06%+4,000Timeline
JSPRJASPER THERAPEUTICS INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q2: restricted; 2024Q3: 459,088 shares; 2024Q4: 463,088 shares; 2025Q1: 545,171 shares; 2025Q2: 545,171 shares; 2025Q3: 1,100,726 shares; 2025Q4: 1,100,726 shares; 2026Q1: 1,100,726 shares 1,100,726$964K0.06%0Timeline
LEGNLEGEND BIOTECH CORPQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q2: restricted; 2024Q3: 508,932 shares; 2024Q4: 512,132 shares; 2025Q1: 512,932 shares; 2025Q2: not reported; 2025Q3: not reported; 2025Q4: 33,800 shares; 2026Q1: 40,500 shares 40,500$733K0.04%+6,700Timeline
GOSSGOSSAMER BIO INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q2: restricted; 2024Q3: 3,266,960 shares; 2024Q4: 3,266,960 shares; 2025Q1: 3,266,960 shares; 2025Q2: 3,266,960 shares; 2025Q3: 3,266,960 shares; 2025Q4: 3,266,960 shares; 2026Q1: 1,609,492 shares 1,609,492$529K0.03%-1,657,468Timeline
FOLDAMICUS THERAPEUTICQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q2: restricted; 2024Q3: 1,250,280 shares; 2024Q4: 2,599,425 shares; 2025Q1: 1,909,362 shares; 2025Q2: 1,960,334 shares; 2025Q3: 1,947,374 shares; 2025Q4: 1,929,931 shares; 2026Q1: 21,062 shares 21,062$305K0.02%-1,908,869Timeline
ORKAORUKA THERAPEUTICS INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q2: restricted; 2024Q3: not reported; 2024Q4: not reported; 2025Q1: not reported; 2025Q2: not reported; 2025Q3: not reported; 2025Q4: not reported; 2026Q1: 4,123 shares 4,123$202K0.01%newTimeline
BCRXBIOCRYST PHARMACEUTICALS INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q2: restricted; 2024Q3: 3,622,358 shares; 2024Q4: 2,677,996 shares; 2025Q1: 222,011 shares; 2025Q2: not reported; 2025Q3: not reported; 2025Q4: not reported; 2026Q1: 12,600 shares 12,600$120K0.01%newTimeline

Sold out in Q1 2026

Positions in the previous quarter's report that this quarter's report no longer lists.

SecurityShares beforeValue beforeType
EXASEXACT SCIENCES CORP601,800$61.1Mshares
CDTXCIDARA THERAPEUTICS INC204,878$45.3Mshares
RAPTRAPT THERAPEUTICS INC213,731$7.24Mshares
GOSSAMER BIO INCGOSSAMER BIO INC9,573,000$6.56Mprincipal
AGLAGILON HEALTH INC COM (DE)6,500,000$4.48Mshares
MERSANA THERAPEUTICS INCMERSANA THERAPEUTICS INC152,586$4.41Mshares
TBPHTHERAVANCE BIOPHARMA INC208,771$3.91Mshares
INDIVIOR PLCINDIVIOR PLC105,100$3.77Mshares
NAMSNEWAMSTERDAM PHARMA COMPANY31,600$1.11Mcall
NUVATION BIO INCNUVATION BIO INC134,028$44.2Kshares

How Q1 2026 was built

Available 13F filings of this filer for the quarter and their roles: the base report is the latest original or restatement, NEW HOLDINGS amendments filed after it are added (method).

FilingRoleAmendmentFiledAcceptedIngested
13F-HR 0001172661-26-002225 base2026-05-15acceptance time not in the bulk data set