13F-HR filed by Rock Springs Capital Management LP
Rock Springs Capital Management LP filed this 13F-HR for the quarter ended 2018-03-31, filed 2018-05-15, with 149 holding rows worth $2,344,209,000.
- Accession
- 0001172661-18-001147
- Filer
- CIK 1595725
- Filed
- 2018-05-15
- Accepted by EDGAR
- acceptance time not in the bulk data set
- Ingested
- Source
- SEC quarterly data set
13F report for Q1 2018
A holdings report, 149 entries on the cover page, a total value of $2,344,209,000 stated on the cover page (in dollars after the unit check, H1), rows summing to $2,344,209,000 with VALUE read as thousands by filing date, 13F file number 028-16048. The quarter's positions are built on this report. The resolved quarter.
The information table after summing rows of one CUSIP and put or call (H4), with the CUSIP and issuer name as filed. Values in dollars after the unit check (method).
| Issuer as filed | CUSIP | Class | Amount | Value | Value read as | Type |
|---|---|---|---|---|---|---|
| UnitedHealth Group Inc | 91324P102 | COM | 487,500 | $104,325,000 | thousands by filing date | |
| Intuitive Surgical,Inc. | 46120E602 | COM | 143,900 | $59,406,000 | thousands by filing date | |
| AbbVie,Inc. | 00287Y109 | COM | 600,000 | $56,790,000 | thousands by filing date | |
| ALEXION PHARMACEUTICALS INC | 015351109 | COM | 485,000 | $54,058,000 | thousands by filing date | |
| NEUROCRINE BIOSCIENCES INC | 64125C109 | COM | 606,200 | $50,272,000 | thousands by filing date | |
| ACADIA HEALTHCARE COMPANY INC COM | 00404A109 | Stock | 1,253,500 | $49,112,000 | thousands by filing date | |
| COLLEGIUM PHARMACEUTICAL INC | 19459J104 | COM | 1,920,000 | $49,056,000 | thousands by filing date | |
| MOLINA HEALTHCARE INC | 60855R100 | COM | 576,000 | $46,760,000 | thousands by filing date | |
| SPARK THERAPEUTICS INC | 84652J103 | COM | 623,500 | $41,519,000 | thousands by filing date | |
| Bristol-Myers Squibb Company | 110122108 | COM | 650,000 | $41,113,000 | thousands by filing date | |
| GW PHARMACEUTICALS PLC | 36197T103 | ADS | 360,000 | $40,561,000 | thousands by filing date | |
| AETNA INC NEW | 00817Y108 | COM | 239,000 | $40,391,000 | thousands by filing date | |
| MADRIGAL PHARMACEUTICALS INC COM | 558868105 | Stock | 325,500 | $38,015,000 | thousands by filing date | |
| BEONE MEDICINES LTD SPONSORED ADS | 07725L102 | ADR | 221,250 | $37,170,000 | thousands by filing date | |
| HCA Healthcare Inc | 40412C101 | COM | 380,000 | $36,860,000 | thousands by filing date | |
| LOXO ONCOLOGY INC | 548862101 | COM | 316,500 | $36,515,000 | thousands by filing date | |
| RADIUS HEALTH INC | 750469207 | COM NEW | 1,000,000 | $35,940,000 | thousands by filing date | |
| PACIRA BIOSCIENCES INC COM | 695127100 | Stock | 1,125,000 | $35,044,000 | thousands by filing date | |
| PRA HEALTH SCIENCES INC | 69354M108 | COM | 395,000 | $32,769,000 | thousands by filing date | |
| TESARO INC | 881569107 | COM | 573,000 | $32,741,000 | thousands by filing date | |
| IRHYTHM HOLDINGS INC COM | 450056106 | Stock | 477,500 | $30,059,000 | thousands by filing date | |
| Vertex Pharmaceuticals Incorporated | 92532F100 | COM | 181,000 | $29,499,000 | thousands by filing date | |
| Stryker Corporation | 863667101 | COM | 178,000 | $28,644,000 | thousands by filing date | |
| PENUMBRA INC COM | 70975L107 | Stock | 243,000 | $28,103,000 | thousands by filing date | |
| PUMA BIOTECHNOLOGY INC | 74587V107 | COMMON STOCK | 412,900 | $28,098,000 | thousands by filing date | |
| CELGENE CORP | 151020104 | COM | 310,100 | $27,664,000 | thousands by filing date | |
| DAVITA INC COM | 23918K108 | Stock | 407,500 | $26,871,000 | thousands by filing date | |
| EDWARDS LIFESCIENCES CORP COM | 28176E108 | Stock | 190,001 | $26,509,000 | thousands by filing date | |
| WELLCARE HEALTH PLANS INC | 94946T106 | COM | 134,000 | $25,946,000 | thousands by filing date | |
| CENCORA INC COM | 03073E105 | Stock | 295,000 | $25,432,000 | thousands by filing date | |
| Thermo Fisher Scientific Inc. | 883556102 | COM | 114,500 | $23,640,000 | thousands by filing date | |
| Gilead Sciences,Inc. | 375558103 | COM | 313,400 | $23,627,000 | thousands by filing date | |
| TELEFLEX INCORPORATED | 879369106 | COM | 92,500 | $23,586,000 | thousands by filing date | |
| AVEXIS INC | 05366U100 | COM | 190,000 | $23,480,000 | thousands by filing date | |
| MEDICINES CO | 584688105 | COM | 690,000 | $22,729,000 | thousands by filing date | |
| EPIZYME INC | 29428V104 | COM | 1,275,000 | $22,631,000 | thousands by filing date | |
| ASSEMBLY BIOSCIENCES INC | 045396108 | COM | 443,000 | $21,769,000 | thousands by filing date | |
| Mersana Therapeutics Inc | 59045L106 | Common Stock | 1,300,000 | $20,501,000 | thousands by filing date | |
| WRIGHT MED GROUP N V | N96617118 | ORD SHS | 1,000,000 | $19,840,000 | thousands by filing date | |
| ALDER BIOPHARMACEUTICALS INC | 014339105 | COM | 1,529,800 | $19,428,000 | thousands by filing date | |
| BAXTER INTL INC | 071813109 | COM | 297,000 | $19,317,000 | thousands by filing date | |
| SAREPTA THERAPEUTICS INC | 803607100 | COM | 258,000 | $19,115,000 | thousands by filing date | |
| ENCOMPASS HEALTH CORP COM | 29261A100 | Stock | 327,000 | $18,695,000 | thousands by filing date | |
| JAZZ PHARMACEUTICALS PLC SHS USD | G50871105 | Stock | 123,700 | $18,677,000 | thousands by filing date | |
| INSMED INC COM PAR $.01 | 457669307 | Stock | 825,000 | $18,579,000 | thousands by filing date | |
| ASCENDIS PHARMA A/S DKK 1.0 AD | 04351P101 | SPONSORED ADR | 283,500 | $18,541,000 | thousands by filing date | |
| LAKEFRONT BIOTHERAPEUTICS NV | 36315X101 | SPON ADR | 185,000 | $18,456,000 | thousands by filing date | |
| AXOGEN INC | 05463X106 | COM | 505,000 | $18,433,000 | thousands by filing date | |
| ALNYLAM PHARMACEUTICALS INC COM | 02043Q107 | Stock | 143,000 | $17,031,000 | thousands by filing date | |
| AUDENTES THERAPEUTICS INC. | 05070R104 | Common Stock | 565,000 | $16,978,000 | thousands by filing date | |
| ALIGN TECHNOLOGY INC COM | 016255101 | Stock | 65,500 | $16,449,000 | thousands by filing date | |
| INTERSECT ENT INC | 46071F103 | COM | 410,000 | $16,113,000 | thousands by filing date | |
| ZIMMER BIOMET HOLDINGS INC COM | 98956P102 | Stock | 147,500 | $16,083,000 | thousands by filing date | |
| NUVASIVE INC | 670704105 | COM | 305,000 | $15,924,000 | thousands by filing date | |
| THERAVANCE BIOPHARMA INC | G8807B106 | COM | 652,600 | $15,826,000 | thousands by filing date | |
| INCYTE CORP COM | 45337C102 | Stock | 182,500 | $15,208,000 | thousands by filing date | |
| AMICUS THERAPEUTICS INC | 03152W109 | COM | 1,000,000 | $15,040,000 | thousands by filing date | |
| HOLOGIC INC | 436440101 | COM | 400,000 | $14,944,000 | thousands by filing date | |
| EXACT SCIENCES CORP COM | 30063P105 | Stock | 370,500 | $14,942,000 | thousands by filing date | |
| ARENA PHARMACEUTICALS INC | 040047607 | COM NEW | 375,000 | $14,813,000 | thousands by filing date | |
| BIOGEN INC COM | 09062X103 | Stock | 53,000 | $14,512,000 | thousands by filing date | |
| BLUEPRINT MEDICINES CORP | 09627Y109 | COM | 157,753 | $14,466,000 | thousands by filing date | |
| FIBROGEN INC | 31572Q808 | COM | 309,500 | $14,299,000 | thousands by filing date | |
| ANAPTYSBIO INC | 032724106 | COM | 135,000 | $14,051,000 | thousands by filing date | |
| INOGEN INC | 45780L104 | COM | 110,500 | $13,574,000 | thousands by filing date | |
| HERON THERAPEUTICS INC | 427746102 | COM | 476,000 | $13,138,000 | thousands by filing date | |
| MENLO THERAPEUTICS INC | 586858102 | COM | 330,000 | $12,401,000 | thousands by filing date | |
| CLOVIS ONCOLOGY INC | 189464100 | COM | 231,500 | $12,223,000 | thousands by filing date | |
| IDEXX LABS INC COM | 45168D104 | Stock | 63,000 | $12,058,000 | thousands by filing date | |
| AMARIN CORP PLC | 023111206 | SPONS ADR NEW | 4,000,000 | $12,040,000 | thousands by filing date | |
| PROTHENA CORP PLC SHS | G72800108 | Stock | 318,500 | $11,692,000 | thousands by filing date | |
| ARDELYX INC | 039697107 | COM | 2,275,557 | $11,492,000 | thousands by filing date | |
| ObsEva SA | H5861P103 | COM | 840,000 | $11,332,000 | thousands by filing date | |
| TRANSPORTATION & LOGISTI | 438083107 | COM | 575,000 | $10,753,000 | thousands by filing date | |
| G1 THERAPEUTICS INC | 3621LQ109 | COM | 287,000 | $10,633,000 | thousands by filing date | |
| PORTOLA PHARMACEUTICALS INC COM | 737010108 | Stock | 323,800 | $10,575,000 | thousands by filing date | |
| CLEARSIDE BIOMEDICAL INC | 185063104 | COM | 975,000 | $10,462,000 | thousands by filing date | |
| BIOMARIN PHARMACEUTICAL INC | 09061G101 | COM | 125,000 | $10,134,000 | thousands by filing date | |
| FIVE PRIME THERAPEUTICS INC. | 33830X104 | Common Stock | 585,500 | $10,059,000 | thousands by filing date | |
| ADAPTIMMUNE THERAPEUTICS PLC | 00653A107 | SPONDS ADR | 875,000 | $9,826,000 | thousands by filing date | |
| ACLARIS THERAPEUTICS INC COM | 00461U105 | Stock | 530,000 | $9,286,000 | thousands by filing date | |
| RIGEL PHARMACEUTICALS INC | 766559603 | COMMON STOCK | 2,575,000 | $9,116,000 | thousands by filing date | |
| ZOGENIX INC. | 98978L204 | Common Stock | 225,500 | $9,031,000 | thousands by filing date | |
| GLOBAL CORD BLOOD CORP | G39342103 | COM | 880,000 | $8,976,000 | thousands by filing date | |
| RTI BIOLOGICS INC | 74975N105 | COM | 1,950,000 | $8,970,000 | thousands by filing date | |
| RETROPHIN INC | 761299106 | COM | 400,000 | $8,944,000 | thousands by filing date | |
| ULTRAGENYX PHARMACEUTICAL IN | 90400D108 | COM | 173,000 | $8,821,000 | thousands by filing date | |
| ZOETIS INC CL A | 98978V103 | Stock | 101,000 | $8,435,000 | thousands by filing date | |
| BIOHAVEN PHARMACEUTICAL HOLDIN | G11196105 | COM | 325,000 | $8,372,000 | thousands by filing date | |
| ACHILLION PHARMACEUTICALS IN | 00448Q201 | COM | 2,250,000 | $8,348,000 | thousands by filing date | |
| ODONATE THERAPEUTICS INC | 676079106 | COM | 383,500 | $8,123,000 | thousands by filing date | |
| SAGE THERAPEUTICS INC | 78667J108 | COM | 49,000 | $7,892,000 | thousands by filing date | |
| BLUEBIRD BIO INC | 09609G100 | COM | 45,000 | $7,684,000 | thousands by filing date | |
| COHERUS ONCOLOGY INC | 19249H103 | COM | 695,000 | $7,680,000 | thousands by filing date | |
| SPERO THERAPEUTICS INC | 84833T103 | COM | 525,000 | $7,481,000 | thousands by filing date | |
| GLOBAL BLOOD THERAPEUTICS USD | 37890U108 | COM | 150,000 | $7,245,000 | thousands by filing date | |
| MACROGENICS INC | 556099109 | COM | 275,000 | $6,919,000 | thousands by filing date | |
| CORVUS PHARMACEUTICALS INC | 221015100 | COM | 575,000 | $6,630,000 | thousands by filing date | |
| IMMUNOMEDICS INC | 452907108 | COM | 450,000 | $6,575,000 | thousands by filing date | |
| INVITAE CORP | 46185L103 | COM | 1,400,000 | $6,566,000 | thousands by filing date | |
| LA JOLLA PHARMACEUTICAL CO | 503459604 | COM PAR $.0001 2 | 220,000 | $6,552,000 | thousands by filing date | |
| CYMABAY THERAPEUTICS INC | 23257D103 | COM | 490,000 | $6,365,000 | thousands by filing date | |
| ZAI LAB LTD ADR | 98887Q104 | ADR | 295,000 | $6,298,000 | thousands by filing date | |
| GTX INC DEL | 40052B207 | COM NEW | 354,000 | $6,284,000 | thousands by filing date | |
| MYOVANT SCIENCES LTD | G637AM102 | COMMON STOCK-FO | 295,100 | $6,277,000 | thousands by filing date | |
| MOMENTA PHARMACEUTICALS INC | 60877T100 | COM | 345,000 | $6,262,000 | thousands by filing date | |
| ENDOCYTE INC | 29269A102 | COM | 675,000 | $6,136,000 | thousands by filing date | |
| AGILENT TECHNOLOGIES INC COM | 00846U101 | Stock | 91,500 | $6,121,000 | thousands by filing date | |
| PARATEK PHARMACEUTICALS INC | 699374302 | Equity | 450,000 | $5,850,000 | thousands by filing date | |
| MIRATI THERAPEUTICS INC | 60468T105 | COM | 189,000 | $5,802,000 | thousands by filing date | |
| NOVAVAX INC | 670002104 | COMMON STOCK | 2,750,000 | $5,775,000 | thousands by filing date | |
| THERAPEUTICSMD INC | 88338N107 | COM | 1,172,800 | $5,712,000 | thousands by filing date | |
| SHIRE PLC | 82481R106 | COMMON STOCK-FO | 37,500 | $5,602,000 | thousands by filing date | |
| INSMED INC | 457669AA7 | NOTE 1.750% 1/1 | 6,000,000 | $5,358,000 | thousands by filing date | principal |
| CLEMENTIA PHARMACEUTICALS IN | 185575107 | COM | 345,000 | $5,227,000 | thousands by filing date | |
| Adverum Biotechnologies, Inc. | 00773U108 | Common Stock | 900,000 | $5,220,000 | thousands by filing date | |
| AEGLEA BIOTHERAPEUTICS INC | 00773J103 | COM | 524,089 | $5,199,000 | thousands by filing date | |
| AIMMUNE THERAPEUTICS INC. | 00900T107 | Common Stock | 160,000 | $5,093,000 | thousands by filing date | |
| DYNAVAX TECHNOLOGIES CORP | 268158201 | COM NEW | 251,000 | $4,982,000 | thousands by filing date | |
| PROTHENA CORP PLC SHS | G72800108 | Stock | 135,000 | $4,956,000 | thousands by filing date | call |
| MEDICINES CO | 584688AG0 | NOTE 2.750% 7/1 | 5,000,000 | $4,820,000 | thousands by filing date | principal |
| DERMIRA INC | 24983L104 | COM | 600,000 | $4,794,000 | thousands by filing date | |
| ALDER BIOPHARMACEUTICALS INC | 014339AA3 | NOTE 2.500% 2/0 | 5,000,000 | $4,626,000 | thousands by filing date | principal |
| BIOCRYST PHARMACEUTICALS INC COM | 09058V103 | Stock | 925,000 | $4,412,000 | thousands by filing date | |
| INTRA-CELLULAR THERAPIES INC | 46116X101 | COMMON STOCK | 187,500 | $3,947,000 | thousands by filing date | |
| EXELIXIS INC COM | 30161Q104 | Stock | 175,000 | $3,876,000 | thousands by filing date | |
| COMPUGEN LTD | M25722105 | ORD | 825,000 | $3,671,000 | thousands by filing date | |
| MEDICINES CO | 584688AE5 | NOTE 2.500% 1/1 | 3,000,000 | $3,462,000 | thousands by filing date | principal |
| MERUS N V | N5749R100 | COM | 174,917 | $3,241,000 | thousands by filing date | |
| PROTEOSTASIS THERAPEUTICS IN | 74373B109 | COM | 675,000 | $3,206,000 | thousands by filing date | |
| RA PHARMACEUTICALS INC | 74933V108 | COM | 600,000 | $3,186,000 | thousands by filing date | |
| Egalet Corporation | 28226BAB0 | Note 5.50% 4/1/20 | 7,800,000 | $3,159,000 | thousands by filing date | principal |
| NABRIVA THERAPEUTICS PLC | G63637105 | SHS | 625,000 | $3,144,000 | thousands by filing date | |
| ALLERGAN PLC | G0177J108 | SHS | 17,665 | $2,973,000 | thousands by filing date | |
| CARDIOME PHARMA CORP | 14159U301 | COM NO PAR | 1,200,000 | $2,784,000 | thousands by filing date | |
| RESTORBIO INC | 76133L103 | COM | 275,000 | $2,635,000 | thousands by filing date | |
| DBV TECHNOLOGIES S A | 23306J101 | ADR | 73,000 | $1,684,000 | thousands by filing date | |
| SERES THERAPEUTICS INC | 81750R102 | COM | 220,000 | $1,615,000 | thousands by filing date | |
| THERAVANCE BIOPHARMA | 88339KAA0 | NOTE 3.250%11/0 | 1,500,000 | $1,515,000 | thousands by filing date | principal |
| RADIUS HEALTH INC | 750469AA6 | NOTE | 1,500,000 | $1,512,000 | thousands by filing date | principal |
| RHYTHM PHARMACEUTICALS INC | 76243J105 | COM | 71,500 | $1,423,000 | thousands by filing date | |
| CIDARA THERAPEUTICS INC COM NEW | 171757107 | Stock | 300,000 | $1,200,000 | thousands by filing date | |
| SCYNEXIS INC COM NEW | 811292101 | Common Stock | 820,000 | $1,099,000 | thousands by filing date | |
| WRIGHT MED GROUP INC | 98235TAE7 | NOTE 2.000% 2/1 | 1,000,000 | $1,001,000 | thousands by filing date | principal |
| SOLID BIOSCIENCES INC COM NEW | 83422E105 | Stock | 125,000 | $938,000 | thousands by filing date | |
| PACIRA BIOSCIENCES | 695127AD2 | NOTE 2.375% 4/0 | 1,000,000 | $912,000 | thousands by filing date | principal |
| CHIASMA INC | 16706W102 | COM | 525,000 | $788,000 | thousands by filing date | |
| INFINITY PHARMACEUTICALS INC | 45665G303 | COM | 270,000 | $567,000 | thousands by filing date | |
| KURA ONCOLOGY INC COM | 50127T109 | Stock | 26,500 | $497,000 | thousands by filing date |
Amendment chain
| Filing | Role | Filed | Accepted | Ingested |
|---|---|---|---|---|
| 13F-HR 0001172661-18-001147 | this filing | 2018-05-15 | acceptance time not in the bulk data set |