Rock Springs Capital Management LP - Q3 2019 holdings

$2.51 Billion is the total value of Rock Springs Capital Management LP's 138 reported holdings in Q3 2019. The portfolio turnover from Q2 2019 to Q3 2019 was 14.1% .

 Value Shares↓ Weighting
UNH  UNITEDHEALTH GROUP INC$128,436,000
-10.9%
591,0000.0%5.12%
-1.9%
NBIX BuyNEUROCRINE BIOSCIENCES INC$111,061,000
+28.6%
1,232,500
+20.5%
4.42%
+41.6%
WCG  WELLCARE HEALTH PLANS INC$83,064,000
-9.1%
320,5000.0%3.31%
+0.2%
ISRG  INTUITIVE SURGICAL INC$82,339,000
+2.9%
152,5000.0%3.28%
+13.4%
AMRN BuyAMARIN CORP PLCspons adr new$70,494,000
-19.7%
4,650,000
+2.8%
2.81%
-11.5%
HCA BuyHCA HEALTHCARE INC$56,296,000
-8.5%
467,500
+2.7%
2.24%
+0.8%
EHC BuyENCOMPASS HEALTH CORP$51,573,000
+1.1%
815,000
+1.2%
2.06%
+11.4%
ONCE  SPARK THERAPEUTICS INC$49,011,000
-5.3%
505,3710.0%1.95%
+4.3%
TFX  TELEFLEX INC$44,168,000
+2.6%
130,0000.0%1.76%
+13.0%
PCRX SellPACIRA BIOSCIENCES$43,781,000
-19.5%
1,150,000
-8.0%
1.74%
-11.3%
PODD BuyINSULET CORP$42,964,000
+47.2%
260,500
+6.5%
1.71%
+62.1%
IRTC BuyIRHYTHM TECHNOLOGIES INC$41,131,000
+4.1%
555,000
+11.1%
1.64%
+14.7%
EW  EDWARDS LIFESCIENCES CORP$40,353,000
+19.0%
183,5000.0%1.61%
+31.2%
ACHC BuyACADIA HEALTHCARE COMPANY IN$40,093,000
+8.7%
1,290,000
+22.3%
1.60%
+19.8%
MDCO  MEDICINES CO$40,000,000
+37.1%
800,0000.0%1.59%
+50.9%
ABBV BuyABBVIE INC$39,753,000
+264.4%
525,000
+250.0%
1.58%
+301.0%
BSX  BOSTON SCIENTIFIC CORP$39,469,000
-5.3%
970,0000.0%1.57%
+4.3%
EXAS BuyEXACT SCIENCES CORP$39,017,000
-16.7%
431,750
+8.8%
1.56%
-8.3%
SYK  STRYKER CORP$38,718,000
+5.2%
179,0000.0%1.54%
+15.9%
CHRS  COHERUS BIOSCIENCES INC$38,089,000
-8.3%
1,880,0000.0%1.52%
+1.0%
VRTX  VERTEX PHARMACEUTICALS INC$34,392,000
-7.6%
203,0000.0%1.37%
+1.7%
BAX BuyBAXTER INTL INC$33,676,000
+36.7%
385,000
+28.0%
1.34%
+50.6%
RDUS BuyRADIUS HEALTH INC$33,475,000
+9.9%
1,300,000
+4.0%
1.33%
+21.1%
CI BuyCIGNA CORP NEW$32,923,000
+14.6%
216,900
+19.0%
1.31%
+26.3%
IDXX  IDEXX LABS INC$32,686,000
-1.2%
120,2000.0%1.30%
+8.8%
PEN BuyPENUMBRA INC$32,614,000
-14.7%
242,500
+1.5%
1.30%
-6.0%
PTLA BuyPORTOLA PHARMACEUTICALS INC$28,161,000
+3.0%
1,050,000
+4.2%
1.12%
+13.4%
GLPG BuyGALAPAGOS NVspon adr$26,716,000
+25.6%
175,000
+6.1%
1.06%
+38.3%
ALNY BuyALNYLAM PHARMACEUTICALS INC$26,579,000
+11.8%
330,500
+0.9%
1.06%
+23.1%
BGNE  BEIGENE LTDsponsored adr$26,304,000
-1.2%
214,8000.0%1.05%
+8.8%
RARE BuyULTRAGENYX PHARMACEUTICAL IN$26,010,000
-29.4%
608,000
+4.8%
1.04%
-22.2%
SRPT BuySAREPTA THERAPEUTICS INC$25,421,000
-48.5%
337,500
+3.8%
1.01%
-43.3%
ALDR SellALDER BIOPHARMACEUTICALS INC$24,518,000
+33.3%
1,300,000
-16.8%
0.98%
+46.9%
BPMC BuyBLUEPRINT MEDICINES CORP$24,502,000
-15.5%
333,500
+8.5%
0.98%
-7.0%
AMGN NewAMGEN INC$24,382,000126,000
+100.0%
0.97%
TMO  THERMO FISHER SCIENTIFIC INC$23,593,000
-0.8%
81,0000.0%0.94%
+9.2%
MOH BuyMOLINA HEALTHCARE INC$23,535,000
-20.2%
214,500
+4.1%
0.94%
-12.1%
MDGL BuyMADRIGAL PHARMACEUTICALS INC$23,486,000
-12.8%
272,400
+6.0%
0.94%
-3.9%
INCY  INCYTE CORP$23,182,000
-12.6%
312,3000.0%0.92%
-3.8%
ALLK SellALLAKOS INC$22,803,000
+30.3%
290,000
-28.2%
0.91%
+43.6%
NVTA  INVITAE CORP$21,679,000
-18.0%
1,125,0000.0%0.86%
-9.6%
WST BuyWEST PHARMACEUTICAL SVSC INC$21,628,000
+25.7%
152,500
+10.9%
0.86%
+38.4%
NVRO BuyNEVRO CORP$20,848,000
+64.5%
242,500
+24.0%
0.83%
+81.0%
ARGX  ARGENX SEsponsored adr$20,707,000
-19.5%
181,7000.0%0.82%
-11.4%
SGEN  SEATTLE GENETICS INC$20,667,000
+23.4%
242,0000.0%0.82%
+36.0%
ASND  ASCENDIS PHARMA A Ssponsored adr$20,564,000
-16.4%
213,5000.0%0.82%
-7.9%
ALGN BuyALIGN TECHNOLOGY INC$20,064,000
-30.2%
110,900
+5.6%
0.80%
-23.2%
MRTX BuyMIRATI THERAPEUTICS INC$20,062,000
-3.8%
257,500
+27.2%
0.80%
+5.8%
RARX BuyRA PHARMACEUTICALS INC$19,748,000
-18.3%
835,000
+3.9%
0.79%
-10.1%
EPZM  EPIZYME INC$19,084,000
-17.8%
1,850,1000.0%0.76%
-9.5%
ZLAB BuyZAI LAB LTDadr$18,601,000
-3.0%
575,000
+4.5%
0.74%
+6.8%
CELG  CELGENE CORP$18,385,000
+7.4%
185,1500.0%0.73%
+18.4%
COLL  COLLEGIUM PHARMACEUTICAL INC$18,114,000
-12.7%
1,577,8930.0%0.72%
-3.9%
FRPT BuyFRESHPET INC$17,681,000
+65.3%
355,250
+51.2%
0.70%
+82.2%
ADPT SellADAPTIVE BIOTECHNOLOGIES COR$16,841,000
-41.9%
545,000
-9.2%
0.67%
-36.0%
INSM  INSMED INC$15,700,000
-31.1%
890,0000.0%0.63%
-24.0%
XENT BuyINTERSECT ENT INC$14,841,000
-17.5%
872,500
+10.4%
0.59%
-9.1%
ARDX BuyARDELYX INC$14,360,000
+166.9%
3,055,261
+52.8%
0.57%
+193.3%
BHVN  BIOHAVEN PHARMACTL HLDG CO L$14,331,000
-4.7%
343,5000.0%0.57%
+5.0%
ACHN BuyACHILLION PHARMACEUTICALS IN$13,770,000
+74.2%
3,825,000
+29.7%
0.55%
+92.0%
SAGE  SAGE THERAPEUTICS INC$12,977,000
-23.4%
92,5000.0%0.52%
-15.7%
NVCR SellNOVOCURE LTD$12,900,000
+4.6%
172,500
-11.5%
0.51%
+15.2%
GBT  GLOBAL BLOOD THERAPEUTICS IN$12,858,000
-7.8%
265,0000.0%0.51%
+1.6%
ASMB BuyASSEMBLY BIOSCIENCES INC$12,779,000
+69.2%
1,300,000
+132.1%
0.51%
+86.4%
GH  GUARDANT HEALTH INC$12,128,000
-26.1%
190,0000.0%0.48%
-18.5%
IMMU  IMMUNOMEDICS INC$11,868,000
-4.4%
895,0000.0%0.47%
+5.3%
BOLD  AUDENTES THERAPEUTICS INC$11,517,000
-25.8%
410,0000.0%0.46%
-18.3%
AGIO BuyAGIOS PHARMACEUTICALS INC$11,421,000
+34.3%
352,500
+106.7%
0.46%
+47.7%
OBSV BuyOBSEVA SA$11,329,000
-10.6%
1,360,000
+21.4%
0.45%
-1.5%
FGEN  FIBROGEN INC$11,316,000
-18.1%
306,0000.0%0.45%
-9.8%
ODT  ODONATE THERAPEUTICS INC$11,193,000
-29.1%
430,0000.0%0.45%
-21.9%
RTRX  RETROPHIN INC$11,011,000
-42.3%
950,0000.0%0.44%
-36.4%
GWPH SellGW PHARMACEUTICALS PLCads$10,928,000
-89.5%
95,000
-84.3%
0.44%
-88.5%
TBPH  THERAVANCE BIOPHARMA INC$10,714,000
+19.3%
550,0000.0%0.43%
+31.4%
ABT NewABBOTT LABS$10,250,000122,500
+100.0%
0.41%
TBIO BuyTRANSLATE BIO INC$10,158,000
-20.3%
1,025,000
+1.6%
0.40%
-12.1%
ZGNX BuyZOGENIX INC$10,010,000
-10.8%
250,000
+6.4%
0.40%
-1.7%
CNC NewCENTENE CORP DEL$9,941,000229,800
+100.0%
0.40%
BMRN  BIOMARIN PHARMACEUTICAL INC$9,605,000
-21.3%
142,5000.0%0.38%
-13.3%
PHR NewPHREESIA INC$8,751,000361,000
+100.0%
0.35%
DCPH NewDECIPHERA PHARMACEUTICALS IN$8,485,000250,000
+100.0%
0.34%
ANAB BuyANAPTYSBIO INC$8,398,000
-31.9%
240,000
+9.8%
0.34%
-24.9%
FOLD  AMICUS THERAPEUTICS INC$8,020,000
-35.7%
1,000,0000.0%0.32%
-29.2%
MIRM NewMIRUM PHARMACEUTICALS INC$7,948,000790,048
+100.0%
0.32%
RIGL  RIGEL PHARMACEUTICALS INC$7,854,000
-28.4%
4,200,0000.0%0.31%
-21.2%
FIXX  HOMOLOGY MEDICINES INC$7,693,000
-7.5%
425,0000.0%0.31%
+2.0%
QURE NewUNIQURE NV$7,656,000194,500
+100.0%
0.30%
JNJ NewJOHNSON & JOHNSON$7,245,00056,000
+100.0%
0.29%
ACAD NewACADIA PHARMACEUTICALS INC$6,730,000187,000
+100.0%
0.27%
DVAX BuyDYNAVAX TECHNOLOGIES CORP$6,614,000
+155.0%
1,850,000
+184.6%
0.26%
+180.9%
RYTM BuyRHYTHM PHARMACEUTICALS INC$6,585,000
+27.4%
305,000
+29.8%
0.26%
+40.1%
ANTM BuyANTHEM INC$6,483,000
+14.9%
27,000
+35.0%
0.26%
+26.5%
PBYI BuyPUMA BIOTECHNOLOGY INC$6,323,000
-6.9%
587,400
+9.9%
0.25%
+2.4%
AGLE  AEGLEA BIOTHERAPEUTICS INC$6,152,000
+12.3%
800,0000.0%0.24%
+23.7%
 MEDICINES COnote 2.750% 7/1$6,050,000
+20.4%
5,000,0000.0%0.24%
+32.4%
PHAS SellPHASEBIO PHARMACEUTICALS INC$5,908,000
-68.4%
1,416,900
-0.4%
0.24%
-65.2%
KRTX SellKARUNA THERAPEUTICS INC$5,882,000
-28.9%
360,400
-12.8%
0.23%
-21.7%
SPRO  SPERO THERAPEUTICS INC$5,565,000
-7.9%
525,0000.0%0.22%
+1.4%
RTIX  RTI SURGICAL HOLDINGS INC$5,558,000
-32.9%
1,950,0000.0%0.22%
-26.3%
AXNX SellAXONICS MODULATION TECH INC$5,451,000
-66.7%
202,500
-49.4%
0.22%
-63.4%
MNTA  MOMENTA PHARMACEUTICALS INC$5,184,000
+4.1%
400,0000.0%0.21%
+15.0%
AKRO  AKERO THERAPEUTICS INC$5,119,000
+18.8%
225,0000.0%0.20%
+30.8%
 INSMED INCnote 1.750% 1/1$5,031,000
-14.0%
6,000,0000.0%0.20%
-5.7%
DERM  DERMIRA INC$4,952,000
-33.2%
775,0000.0%0.20%
-26.5%
NGM  NGM BIOPHARMACEUTICALS INC$4,863,000
-5.4%
351,1000.0%0.19%
+4.3%
CGEN  COMPUGEN LTDord$4,653,000
+10.2%
1,100,0000.0%0.18%
+20.9%
CBAY  CYMABAY THERAPEUTICS INC$4,608,000
-28.5%
900,0000.0%0.18%
-21.0%
BuyNABRIVA THERAPEUTICS PLC$4,600,000
+18.3%
2,300,000
+43.8%
0.18%
+29.8%
 MEDICINES COnote 2.500% 1/1$4,521,000
+25.0%
3,000,0000.0%0.18%
+37.4%
CHMA BuyCHIASMA INC$4,455,000
-8.3%
900,000
+38.5%
0.18%
+1.1%
CO  GLOBAL CORD BLOOD CORPORATIO$4,477,000
-16.3%
925,0000.0%0.18%
-7.8%
GMDA  GAMIDA CELL LTD$4,330,000
-14.8%
1,000,0000.0%0.17%
-6.0%
BLUE  BLUEBIRD BIO INC$4,316,000
-27.8%
47,0000.0%0.17%
-20.4%
HCAT NewHEALTH CATALYST INC$3,955,000125,000
+100.0%
0.16%
MGNX  MACROGENICS INC$3,828,000
-24.8%
300,0000.0%0.15%
-16.8%
LJPC  LA JOLLA PHARMACEUTICAL CO$3,740,000
-4.9%
425,0000.0%0.15%
+4.9%
ICPT BuyINTERCEPT PHARMACEUTICALS IN$3,610,000
-9.3%
54,400
+8.8%
0.14%0.0%
TORC  RESTORBIO INC$3,536,000
-13.3%
400,0000.0%0.14%
-4.7%
ARVN  ARVINAS INC$3,233,000
-2.0%
150,0000.0%0.13%
+8.4%
ACRS BuyACLARIS THERAPEUTICS INC$3,213,000
-27.7%
2,974,754
+46.7%
0.13%
-20.5%
TXG New10X GENOMICS INC$3,200,00063,500
+100.0%
0.13%
FPRX BuyFIVE PRIME THERAPEUTICS INC$3,003,000
-5.3%
775,000
+47.3%
0.12%
+4.3%
CORV  CORREVIO PHARMA CORP$2,400,000
-7.4%
1,200,0000.0%0.10%
+2.1%
MYOV  MYOVANT SCIENCES LTD$2,340,000
-42.5%
450,0000.0%0.09%
-36.7%
MRSN  MERSANA THERAPEUTICS INC$2,212,000
-61.0%
1,400,0000.0%0.09%
-57.1%
PRTK  PARATEK PHARMACEUTICALS INC$1,944,000
+8.2%
450,0000.0%0.08%
+18.5%
 THERAVANCE BIOPHARMA INCnote 3.250%11/0$1,376,000
+6.7%
1,500,0000.0%0.06%
+17.0%
 NEUROCRINE BIOSCIENCES INCnote 2.250% 5/1$1,372,000
+4.2%
1,000,0000.0%0.06%
+14.6%
 RADIUS HEALTH INCnote 3.000% 9/0$1,367,000
+0.4%
1,500,0000.0%0.05%
+10.2%
ADAP  ADAPTIMMUNE THERAPEUTICS PLCsponds adr$1,321,000
-62.5%
875,0000.0%0.05%
-58.3%
CRVS  CORVUS PHARMACEUTICALS INC$1,204,000
-19.5%
400,0000.0%0.05%
-11.1%
CLVS  CLOVIS ONCOLOGY INC$1,006,000
-73.6%
256,0000.0%0.04%
-71.0%
 PACIRA BIOSCIENCESnote 2.375% 4/0$988,000
-3.7%
1,000,0000.0%0.04%
+5.4%
 DERMIRA INCnote 3.000% 5/1$844,000
-2.4%
1,000,0000.0%0.03%
+9.7%
NVAX  NOVAVAX INC$816,000
-14.3%
162,5000.0%0.03%
-2.9%
KLDO  KALEIDO BIOSCIENCES INC$753,000
-35.1%
100,0500.0%0.03%
-28.6%
PTI  PROTEOSTASIS THERAPEUTICS IN$338,000
-13.3%
400,0000.0%0.01%
-7.1%
CVET SellCOVETRUS INC$246,000
-68.8%
20,683
-35.8%
0.01%
-65.5%
HRTX ExitHERON THERAPEUTICS INC$0-30,000
-100.0%
-0.02%
ExitALDER BIOPHARMACEUTICALS INCnote 2.500% 2/0$0-5,000,000
-100.0%
-0.17%
AXGN ExitAXOGEN INC$0-603,970
-100.0%
-0.43%
A ExitAGILENT TECHNOLOGIES INC$0-182,800
-100.0%
-0.49%
BIIB ExitBIOGEN INCcall$0-97,500
-100.0%
-0.82%
PRAH ExitPRA HEALTH SCIENCES INC$0-240,000
-100.0%
-0.86%
ALXN ExitALEXION PHARMACEUTICALS INC$0-242,500
-100.0%
-1.15%
BMY ExitBRISTOL MYERS SQUIBB CO$0-1,050,000
-100.0%
-1.72%
Original filings

The following EDGAR filing(s) were analyzed to create this report:

  • View 13F-HR filed 2019-11-14
Signatures

The EDGAR filing(s) were signed by:

Top long-term holdings
NameQuarters ownedLatest quarter ownedMax weighting
INTUITIVE SURGICAL INC40Q3 20233.4%
NEUROCRINE BIOSCIENCES INC39Q3 20234.8%
PACIRA PHARMACEUTICALS INC39Q3 20232.6%
ULTRAGENYX PHARMACEUTICAL IN39Q3 20231.9%
ACADIA HEALTHCARE COMPANY IN38Q3 20234.4%
ASCENDIS PHARMA A/S35Q3 20231.3%
INVITAE CORP35Q3 20231.8%
BIOMARIN PHARMACEUTICAL INC35Q3 20231.3%
MACROGENICS INC35Q3 20230.5%
COLLEGIUM PHARMACEUTICAL INC34Q3 20232.1%

View Rock Springs Capital Management LP's complete holdings history.

Latest significant ownerships (13-D/G)
Rock Springs Capital Management LP Q3 2019 significant holdings filed using form 13D/G when ownership exceeds 5% of a company's total stock issue.
FiledShares Percentage
Aeglea BioTherapeutics, Inc.February 14, 20233,413,9065.6%
Compass Therapeutics, Inc.February 14, 20235,333,1884.2%
Mirum Pharmaceuticals, Inc.February 14, 20231,795,7334.9%
PhaseBio Pharmaceuticals IncSold outFebruary 14, 202300.0%
Sierra Oncology, Inc.Sold outFebruary 14, 202300.0%
ARDELYX, INC.Sold outFebruary 15, 202200.0%
CHIASMA, INCSold outFebruary 15, 202200.0%
FIVE PRIME THERAPEUTICS, INC.Sold outFebruary 15, 202200.0%
F-star Therapeutics, Inc.February 15, 2022751,8893.6%
Protara Therapeutics, Inc.Sold outFebruary 15, 202200.0%

View Rock Springs Capital Management LP's complete significant-ownership history.

Latest filings
TypeFiled
SC 13G/A2024-04-05
13F-HR2024-02-14
SC 13G/A2024-02-14
SC 13G/A2024-02-14
SC 13G/A2024-02-14
SC 13G/A2024-02-14
SC 13G/A2024-02-14
SC 13G/A2024-02-14
SC 13G/A2024-02-14
SC 13G/A2024-02-14

View Rock Springs Capital Management LP's complete filings history.

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