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13F-HR filed by Rock Springs Capital Management LP

Rock Springs Capital Management LP filed this 13F-HR for the quarter ended 2020-03-31, filed 2020-05-15, with 131 holding rows worth $2,418,471,000.

Accession
0001172661-20-001247
Filed
2020-05-15
Accepted by EDGAR
acceptance time not in the bulk data set
Ingested
Source
SEC quarterly data set

Original filing

13F report for Q1 2020

A holdings report, 131 entries on the cover page, a total value of $2,418,471,000 stated on the cover page (in dollars after the unit check, H1), rows summing to $2,418,471,000 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 filedCUSIPClassAmountValueValue read asType
NEUROCRINE BIOSCIENCES INC64125C109COM1,349,500$116,799,000thousands by filing date
Intuitive Surgical,Inc.46120E602COM152,500$75,520,000thousands by filing date
UnitedHealth Group Inc91324P102COM300,000$74,814,000thousands by filing date
BIOGEN INC COM09062X103Stock180,000$56,948,000thousands by filing date
IRHYTHM HOLDINGS INC COM450056106Stock645,000$52,471,000thousands by filing date
BAXTER INTL INC071813109COM645,000$52,368,000thousands by filing date
ENCOMPASS HEALTH CORP COM29261A100Stock815,000$52,184,000thousands by filing date
HUMANA INC COM444859102Stock157,500$49,458,000thousands by filing date
INSULET CORP COM45784P101Stock292,000$48,379,000thousands by filing date
HCA Healthcare Inc40412C101COM520,000$46,722,000thousands by filing date
CENTENE CORP DEL COM15135B101Stock750,000$44,558,000thousands by filing date
ACADIA PHARMACEUTICALS INC004225108COM1,025,000$43,306,000thousands by filing date
BLUEPRINT MEDICINES CORP09627Y109COM737,000$43,100,000thousands by filing date
FORTY SEVEN INC34983P104COM447,400$42,691,000thousands by filing date
ALNYLAM PHARMACEUTICALS INC COM02043Q107Stock381,500$41,526,000thousands by filing date
ZAI LAB LTD ADR98887Q104ADR750,000$38,610,000thousands by filing date
TELEFLEX INCORPORATED879369106COM130,000$38,072,000thousands by filing date
AGIOS PHARMACEUTICALS INC00847X104COM1,055,500$37,449,000thousands by filing date
EDWARDS LIFESCIENCES CORP COM28176E108Stock194,000$36,592,000thousands by filing date
PENUMBRA INC COM70975L107Stock225,000$36,299,000thousands by filing date
Boston Scientific Corporation101137107COM1,100,000$35,893,000thousands by filing date
NEVRO CORP64157F103COM346,000$34,593,000thousands by filing date
LAKEFRONT BIOTHERAPEUTICS NV36315X101SPON ADR175,000$34,286,000thousands by filing date
SAREPTA THERAPEUTICS INC803607100COM345,500$33,797,000thousands by filing date
ULTRAGENYX PHARMACEUTICAL IN90400D108COM747,800$33,225,000thousands by filing date
ARGENX SE SPONSORED ADR04016X101ADR247,500$32,603,000thousands by filing date
BIOMARIN PHARMACEUTICAL INC09061G101COM380,000$32,110,000thousands by filing date
COHERUS ONCOLOGY INC19249H103COM1,950,000$31,629,000thousands by filing date
EPIZYME INC29428V104COM1,955,000$30,322,000thousands by filing date
IDEXX LABS INC COM45168D104Stock125,000$30,280,000thousands by filing date
PACIRA BIOSCIENCES INC COM695127100Stock900,000$30,177,000thousands by filing date
Vertex Pharmaceuticals Incorporated92532F100COM125,000$29,744,000thousands by filing date
SEATTLE GENETICS INC812578102COM242,000$27,922,000thousands by filing date
Applied Therapeutics Inc03828A101Common Stock845,700$27,646,000thousands by filing date
ARDELYX INC039697107COM4,850,000$27,572,000thousands by filing date
BEONE MEDICINES LTD SPONSORED ADS07725L102ADR214,800$26,444,000thousands by filing date
MIRATI THERAPEUTICS INC60468T105COM341,500$26,251,000thousands by filing date
Amgen Inc.031162100COM126,000$25,544,000thousands by filing date
FRESHPET INC COM358039105Stock397,500$25,388,000thousands by filing date
Cigna Corporation125523100COM141,000$24,982,000thousands by filing date
EXACT SCIENCES CORP COM30063P105Stock424,000$24,592,000thousands by filing date
ASCENDIS PHARMA A/S DKK 1.0 AD04351P101SPONSORED ADR213,500$24,042,000thousands by filing date
ASSEMBLY BIOSCIENCES INC045396108COM1,500,000$22,245,000thousands by filing date
ALIGN TECHNOLOGY INC COM016255101Stock127,500$22,179,000thousands by filing date
COLLEGIUM PHARMACEUTICAL INC19459J104COM1,175,000$19,188,000thousands by filing date
UNIQURE NVN90064101SHS400,000$18,980,000thousands by filing date
AMARIN CORP PLC023111206SPONS ADR NEW4,650,000$18,600,000thousands by filing date
INCYTE CORP COM45337C102Stock250,000$18,308,000thousands by filing date
MIRUM PHARMACEUTICALS INC604749101COM1,243,000$17,402,000thousands by filing date
APREA THERAPEUTICS INC03836J102COM500,000$17,380,000thousands by filing date
THERAVANCE BIOPHARMA INCG8807B106COM750,000$17,333,000thousands by filing date
MADRIGAL PHARMACEUTICALS INC COM558868105Stock250,000$16,690,000thousands by filing date
ACADIA HEALTHCARE COMPANY INC COM00404A109Stock900,000$16,515,000thousands by filing date
INVITAE CORP46185L103COM1,150,000$15,721,000thousands by filing date
HEALTHEQUITY INC COM42226A107Stock305,000$15,430,000thousands by filing date
ADAPTIVE BIOTECHNOLOGIES CORP COM00650F109Stock545,000$15,140,000thousands by filing date
GLOBAL BLOOD THERAPEUTICS USD37890U108COM280,000$14,305,000thousands by filing date
IMMUNOMEDICS INC452907108COM1,050,000$14,154,000thousands by filing date
DECIPHERA PHARMACEUTICALS IN24344T101COM335,000$13,792,000thousands by filing date
Johnson & Johnson478160104COM105,000$13,769,000thousands by filing date
GUARDANT HEALTH INC COM40131M109Stock190,000$13,224,000thousands by filing date
KARUNA THERAPEUTICS INC48576A100COM180,000$12,960,000thousands by filing date
RADIUS HEALTH INC750469207COM NEW975,000$12,675,000thousands by filing date
PORTOLA PHARMACEUTICALS INC COM737010108Stock1,751,900$12,491,000thousands by filing date
INSPIRE MED SYS INC COM457730109Stock200,000$12,056,000thousands by filing date
PHREESIA INC71944F106COM565,000$11,882,000thousands by filing date
ODONATE THERAPEUTICS INC676079106COM430,000$11,872,000thousands by filing date
NOVOCURE LTDG6674U108ORD SHS175,000$11,785,000thousands by filing date
ARVINAS INC04335A105COM285,000$11,486,000thousands by filing date
HEALTH CATALYST INC42225T107COM425,000$11,114,000thousands by filing date
MOMENTA PHARMACEUTICALS INC60877T100COM400,000$10,880,000thousands by filing date
WEST PHARMACEUTICAL SVSC INC COM955306105Stock71,000$10,810,000thousands by filing date
FIBROGEN INC31572Q808COM306,000$10,634,000thousands by filing date
CYTOKINETICS INC23282WAA8NOTE 4.000%11/18,000,000$10,573,000thousands by filing dateprincipal
ALLAKOS INC01671P100COM235,000$10,455,000thousands by filing date
CONMED CORP COM207410101Stock180,000$10,309,000thousands by filing date
ZOGENIX INC.98978L204Common Stock400,000$9,892,000thousands by filing date
AMICUS THERAPEUTICS INC03152W109COM1,000,000$9,240,000thousands by filing date
RIGEL PHARMACEUTICALS INC766559603COMMON STOCK5,500,000$8,580,000thousands by filing date
RETROPHIN INC761299106COM575,000$8,389,000thousands by filing date
TRANSLATE BIO INC.89374L104Common Stock825,000$8,225,000thousands by filing date
PPD INC69355F102COM450,000$8,015,000thousands by filing date
COMPUGEN LTDM25722105ORD1,100,000$7,986,000thousands by filing date
MYOKARDIA INC62857M105COM165,000$7,735,000thousands by filing date
RHYTHM PHARMACEUTICALS INC76243J105COM500,000$7,610,000thousands by filing date
CONSTELLATION PHARMACEUTICALS INC.210373106Common Stock233,500$7,339,000thousands by filing date
Mersana Therapeutics Inc59045L106Common Stock1,233,000$7,188,000thousands by filing date
IMARA INC45249V107COM445,936$7,148,000thousands by filing date
BIOHAVEN PHARMACEUTICAL HOLDING11196105COM200,000$6,806,000thousands by filing date
TRANSPORTATION & LOGISTI438083107COM425,000$6,605,000thousands by filing date
INTERSECT ENT INC46071F103COM500,000$5,925,000thousands by filing date
XENON PHARMACEUTICALS INC COM98420N105Stock500,000$5,670,000thousands by filing date
DYNAVAX TECHNOLOGIES CORP268158201COM NEW1,575,000$5,560,000thousands by filing date
PROTHENA CORP PLC SHSG72800108Stock500,000$5,350,000thousands by filing date
INSMED INC457669AA7NOTE 1.750% 1/16,000,000$5,040,000thousands by filing dateprincipal
STAAR SURGICAL CO COM PAR $0.01852312305Stock155,000$5,000,000thousands by filing date
Thermo Fisher Scientific Inc.883556102COM17,500$4,963,000thousands by filing date
CHIASMA INC16706W102COM1,350,000$4,928,000thousands by filing date
SPERO THERAPEUTICS INC84833T103COM605,000$4,888,000thousands by filing date
ALLOGENE THERAPEUTICS INC019770106COM250,000$4,860,000thousands by filing date
PARATEK PHARMACEUTICALS INC699374302Equity1,526,310$4,808,000thousands by filing date
AKERO THERAPEUTICS INC00973Y108COM225,000$4,770,000thousands by filing date
GALERA THERAPEUTICS EQUICLASS EQUITY36338D108COMMON STOCK500,000$4,750,000thousands by filing date
10X GENOMICS INC CL A COM88025U109Stock76,000$4,736,000thousands by filing date
NGM BIOPHARMACEUTICALS INC62921N105COM351,100$4,329,000thousands by filing date
ONESPAWORLD HOLDINGS LIMITEDP73684113COM1,050,000$4,263,000thousands by filing date
ANAPTYSBIO INC032724106COM300,000$4,239,000thousands by filing date
IMMUNOVANT INC45258J102COM250,000$3,891,000thousands by filing date
MYOVANT SCIENCES LTDG637AM102COMMON STOCK-FO500,000$3,775,000thousands by filing date
AEGLEA BIOTHERAPEUTICS INC00773J103COM800,000$3,728,000thousands by filing date
PHASEBIO PHARMACEUTICALS INC717224109COM1,125,000$3,724,000thousands by filing date
PASSAGE BIO INC702712100COM225,000$3,544,000thousands by filing date
ObsEva SAH5861P103COM1,400,000$3,374,000thousands by filing date
ADAPTIMMUNE THERAPEUTICS PLC00653A107SPONDS ADR1,200,000$3,264,000thousands by filing date
AXONICS INC05465P101COM125,000$3,176,000thousands by filing date
TRILLIUM THERAPEUTICS INC COM NEW89620X506Stock750,000$3,030,000thousands by filing date
GAMIDA CELL LTDM47364100SHS1,000,000$3,020,000thousands by filing date
GLOBAL CORD BLOOD CORPG39342103COM925,000$2,942,000thousands by filing date
GW PHARMACEUTICALS PLC36197T103ADS30,000$2,627,000thousands by filing date
TRAVERE THERAPEUTICS INC761299AB2NOTE 2.500% 9/13,250,000$2,566,000thousands by filing dateprincipal
ACLARIS THERAPEUTICS INC COM00461U105Stock1,600,000$1,664,000thousands by filing date
ACCELERON PHARMA INC00434H108COM17,500$1,573,000thousands by filing date
THERAVANCE BIOPHARMA88339KAA0NOTE 3.250%11/01,500,000$1,448,000thousands by filing dateprincipal
MACROGENICS INC556099109COM230,000$1,339,000thousands by filing date
NEUROCRINE BIOSCIENCES INC64125CAD1NOTE 2.250% 5/11,000,000$1,287,000thousands by filing dateprincipal
RADIUS HEALTH INC750469AA6NOTE1,500,000$1,067,000thousands by filing dateprincipal
PACIRA BIOSCIENCES695127AD2NOTE 2.375% 4/01,000,000$966,000thousands by filing dateprincipal
FIVE PRIME THERAPEUTICS INC.33830X104Common Stock400,000$908,000thousands by filing date
BRISTOL-MYERS SQUIBB CO110122157RIGHT 99/99/9999185,150$704,000thousands by filing date
NABRIVA THERAPEUTICS PLCG63637105SHS1,050,000$604,000thousands by filing date
COVETRUS INC22304C100COM20,683$168,000thousands by filing date

Amendment chain

FilingRoleFiledAcceptedIngested
13F-HR 0001172661-20-001247this filing2020-05-15acceptance time not in the bulk data set