Rock Springs Capital Management LP - Q3 2016 holdings

$1.6 Billion is the total value of Rock Springs Capital Management LP's 137 reported holdings in Q3 2016. The portfolio turnover from Q2 2016 to Q3 2016 was 21.9% .

 Value Shares↓ Weighting
TSRO BuyTESARO INC$62,800,000
+55.7%
626,500
+30.5%
3.94%
+31.8%
AET  AETNA INC NEW$50,810,000
-5.5%
440,1000.0%3.18%
-20.0%
RDUS BuyRADIUS HEALTH INC$48,248,000
+51.3%
892,000
+2.8%
3.02%
+28.1%
ACHC BuyACADIA HEALTHCARE COMPANY IN$45,818,000
-1.2%
924,678
+10.5%
2.87%
-16.3%
GWPH BuyGW PHARMACEUTICALS PLCads$43,137,000
+74.5%
325,000
+20.4%
2.70%
+47.8%
AGN BuyALLERGAN PLC$42,838,000
+2.4%
186,000
+2.7%
2.68%
-13.3%
ONCE BuySPARK THERAPEUTICS INC$37,538,000
+20.4%
625,000
+2.5%
2.35%
+1.9%
MRK NewMERCK & CO INC$36,666,000587,500
+100.0%
2.30%
PFE  PFIZER INC$35,760,000
-3.8%
1,055,8000.0%2.24%
-18.5%
AAAP BuyADVANCED ACCELERATOR APPLICsponsored ads$35,414,000
+27.2%
930,000
+1.0%
2.22%
+7.7%
ALXN BuyALEXION PHARMACEUTICALS INC$32,749,000
+19.1%
267,250
+13.5%
2.05%
+0.8%
ISRG BuyINTUITIVE SURGICAL INC$32,617,000
+12.1%
45,000
+2.3%
2.04%
-5.1%
HCA  HCA HOLDINGS INC$32,521,000
-1.8%
430,0000.0%2.04%
-16.8%
CI BuyCIGNA CORPORATION$29,778,000
+12.5%
228,500
+10.5%
1.87%
-4.7%
COLL BuyCOLLEGIUM PHARMACEUTICAL INC$29,757,000
+106.7%
1,545,000
+27.2%
1.86%
+75.0%
WCG  WELLCARE HEALTH PLANS INC$27,458,000
+9.1%
234,5000.0%1.72%
-7.6%
GILD BuyGILEAD SCIENCES INC$27,217,000
-5.1%
344,000
+0.1%
1.71%
-19.6%
CELG  CELGENE CORP$26,603,000
+6.0%
254,5000.0%1.67%
-10.2%
ACRS BuyACLARIS THERAPEUTICS INC$26,020,000
+40.9%
1,016,000
+1.6%
1.63%
+19.3%
MDCO BuyMEDICINES CO$25,701,000
+12.3%
681,000
+0.1%
1.61%
-4.9%
SHPG BuySHIRE PLCsponsored adr$25,686,000
+16.2%
132,500
+10.4%
1.61%
-1.6%
ARDX BuyARDELYX INC$25,557,000
+129.6%
1,975,000
+54.9%
1.60%
+94.4%
LLY  LILLY ELI & CO$22,152,000
+1.9%
276,0000.0%1.39%
-13.7%
TBPH SellTHERAVANCE BIOPHARMA INC$21,744,000
+36.9%
600,000
-14.3%
1.36%
+15.9%
CLSD SellCLEARSIDE BIOMEDICAL INC$21,254,000
+124.0%
1,225,000
-9.5%
1.33%
+89.7%
NBIX BuyNEUROCRINE BIOSCIENCES INC$20,762,000
+11.6%
410,000
+0.1%
1.30%
-5.6%
PEN BuyPENUMBRA INC$20,251,000
+40.3%
266,500
+9.9%
1.27%
+18.8%
PRTA  PROTHENA CORP PLC$18,471,000
+71.5%
308,0000.0%1.16%
+45.3%
BIIB BuyBIOGEN INC$18,156,000
+30.2%
58,000
+0.6%
1.14%
+10.3%
PCRX BuyPACIRA PHARMACEUTICALS INC$17,247,000
+8.2%
504,000
+6.7%
1.08%
-8.4%
AMRN NewAMARIN CORP PLCspons adr new$15,809,0004,955,746
+100.0%
0.99%
AMGN  AMGEN INC$15,680,000
+9.6%
94,0000.0%0.98%
-7.2%
WMGI BuyWRIGHT MED GROUP N V$15,037,000
+58.0%
613,000
+11.9%
0.94%
+33.8%
INCY BuyINCYTE CORP$14,756,000
+19.0%
156,500
+1.0%
0.92%
+0.8%
PRAH  PRA HEALTH SCIENCES INC$14,297,000
+35.3%
253,0000.0%0.90%
+14.6%
MCK BuyMCKESSON CORP$13,674,000
-6.0%
82,000
+5.3%
0.86%
-20.4%
GLPG  GALAPAGOS NVspon adr$13,579,000
+16.6%
210,0000.0%0.85%
-1.3%
BMY BuyBRISTOL MYERS SQUIBB CO$13,480,000
-6.7%
250,000
+27.2%
0.84%
-21.0%
JAZZ BuyJAZZ PHARMACEUTICALS PLC$12,998,000
-9.8%
107,000
+4.9%
0.82%
-23.6%
WBA BuyWALGREENS BOOTS ALLIANCE INC$12,980,000
-2.8%
161,000
+0.4%
0.81%
-17.7%
DHR NewDANAHER CORP DEL$12,542,000160,000
+100.0%
0.79%
CHRS BuyCOHERUS BIOSCIENCES INC$12,520,000
+85.3%
467,500
+16.9%
0.78%
+57.0%
EW BuyEDWARDS LIFESCIENCES CORP$12,448,000
+49.5%
103,250
+23.7%
0.78%
+26.6%
TXMD BuyTHERAPEUTICSMD INC$12,258,000
-8.4%
1,800,000
+14.3%
0.77%
-22.5%
DERM BuyDERMIRA INC$12,006,000
+15.7%
355,000
+0.0%
0.75%
-2.1%
PTHN NewPATHEON N V$11,852,000400,000
+100.0%
0.74%
RTRX BuyRETROPHIN INC$11,682,000
+25.8%
522,000
+0.1%
0.73%
+6.6%
BMRN BuyBIOMARIN PHARMACEUTICAL INC$11,565,000
+31.6%
125,000
+10.6%
0.72%
+11.4%
HLS  HEALTHSOUTH CORP$10,751,000
+4.5%
265,0000.0%0.67%
-11.5%
ACHN BuyACHILLION PHARMACEUTICALS IN$10,660,000
+4.1%
1,316,000
+0.3%
0.67%
-11.9%
SRPT BuySAREPTA THERAPEUTICS INC$10,624,000
+325.3%
173,000
+32.1%
0.67%
+260.0%
RARE BuyULTRAGENYX PHARMACEUTICAL IN$10,428,000
+50.7%
147,000
+3.9%
0.65%
+27.7%
HOLX BuyHOLOGIC INC$9,805,000
+23.2%
252,500
+9.8%
0.62%
+4.4%
FPRX BuyFIVE PRIME THERAPEUTICS INC$8,726,000
+37.9%
166,250
+8.7%
0.55%
+16.9%
BOLD NewAUDENTES THERAPEUTICS INC$8,638,000485,000
+100.0%
0.54%
ALKS SellALKERMES PLC$8,608,000
+2.4%
183,027
-5.9%
0.54%
-13.2%
EXAS NewEXACT SCIENCES CORP$8,078,000435,000
+100.0%
0.51%
VRTX BuyVERTEX PHARMACEUTICALS INC$7,827,000
+6.4%
89,750
+5.0%
0.49%
-9.9%
NVTA BuyINVITAE CORP$7,796,000
+22.9%
890,000
+3.7%
0.49%
+4.0%
WLTW NewWILLIS TOWERS WATSON PUB LTD$7,767,00058,500
+100.0%
0.49%
HRC  HILL ROM HLDGS INC$7,438,000
+22.9%
120,0000.0%0.47%
+4.0%
CRVS  CORVUS PHARMACEUTICALS INC$7,403,000
+15.4%
450,0000.0%0.46%
-2.3%
INSM BuyINSMED INC$7,304,000
+48.9%
503,000
+1.1%
0.46%
+26.2%
PTI BuyPROTEOSTASIS THERAPEUTICS IN$7,016,000
+39.4%
450,000
+8.4%
0.44%
+18.0%
BGNE  BEIGENE LTDsponsored adr$6,932,000
+3.4%
225,0000.0%0.44%
-12.3%
REGN  REGENERON PHARMACEUTICALS$6,834,000
+15.1%
17,0000.0%0.43%
-2.7%
OPHT BuyOPHTHOTECH CORP$6,827,000
-6.1%
148,000
+3.9%
0.43%
-20.4%
MGNX  MACROGENICS INC$6,730,000
+10.8%
225,0000.0%0.42%
-6.2%
 EGALET CORPnote 5.500% 4/0$6,684,000
+12.8%
7,800,0000.0%0.42%
-4.3%
RIGL BuyRIGEL PHARMACEUTICALS INC$6,643,000
+70.2%
1,810,000
+3.4%
0.42%
+43.9%
LGND NewLIGAND PHARMACEUTICALS INC$6,634,00065,000
+100.0%
0.42%
PRTK BuyPARATEK PHARMACEUTICALS INC$6,538,000
+12.3%
502,500
+20.1%
0.41%
-4.9%
EVHC  ENVISION HEALTHCARE HLDGS IN$6,481,000
-12.2%
291,0000.0%0.41%
-25.8%
NVDQ  NOVADAQ TECHNOLOGIES INC$6,421,000
+17.6%
555,0000.0%0.40%
-0.2%
MRUS BuyMERUS N V$6,415,000
+122.5%
383,000
+6.1%
0.40%
+88.7%
EPZM BuyEPIZYME INC$6,322,000
+3.3%
642,500
+7.5%
0.40%
-12.6%
ASND  ASCENDIS PHARMA A Ssponsored adr$6,030,000
+51.5%
300,0000.0%0.38%
+28.1%
ALDR BuyALDER BIOPHARMACEUTICALS INC$5,964,000
+32.3%
182,000
+0.8%
0.37%
+12.0%
JUNO  JUNO THERAPEUTICS INC$5,912,000
-21.9%
197,0010.0%0.37%
-33.9%
RTIX  RTI SURGICAL INC$5,822,000
-12.8%
1,860,0000.0%0.36%
-26.1%
AVXS SellAVEXIS INC$5,769,000
+6.3%
140,000
-1.9%
0.36%
-10.0%
ATHN  ATHENAHEALTH INC$5,770,000
-8.6%
45,7500.0%0.36%
-22.5%
GI BuyENDOCHOICE HLDGS INC$5,766,000
+65.7%
722,500
+1.8%
0.36%
+39.9%
XENT BuyINTERSECT ENT INC$5,465,000
+24.3%
345,000
+1.5%
0.34%
+5.5%
CGEN BuyCOMPUGEN LTDord$5,198,000
-2.2%
825,000
+0.6%
0.33%
-17.0%
ADRO  ADURO BIOTECH INC$5,158,000
+9.9%
415,0000.0%0.32%
-7.2%
FOLD BuyAMICUS THERAPEUTICS INC$5,143,000
+38.5%
695,000
+2.2%
0.32%
+17.1%
FGEN BuyFIBROGEN INC$4,833,000
+30.9%
233,500
+3.8%
0.30%
+11.0%
ADAP SellADAPTIMMUNE THERAPEUTICS PLCsponds adr$4,759,000
-23.7%
675,000
-11.8%
0.30%
-35.5%
PBYI BuyPUMA BIOTECHNOLOGY INC$4,660,000
+374.1%
69,500
+110.6%
0.29%
+300.0%
TNDM  TANDEM DIABETES CARE INC$4,558,000
+1.6%
595,0000.0%0.29%
-13.9%
CLVS  CLOVIS ONCOLOGY INC$4,506,000
+162.7%
125,0000.0%0.28%
+122.0%
CO  CHINA CORD BLOOD CORP$4,497,000
-11.1%
880,0000.0%0.28%
-24.8%
KITE SellKITE PHARMA INC$4,413,000
+10.3%
79,000
-1.2%
0.28%
-6.4%
AIMT  AIMMUNE THERAPEUTICS INC$4,395,000
+38.6%
293,0000.0%0.28%
+17.4%
BIOS NewBIOSCRIP INC$4,308,0001,490,492
+100.0%
0.27%
AGNPRA  ALLERGAN PLCpfd conv ser a$4,106,000
-1.4%
5,0000.0%0.26%
-16.6%
MEDP NewMEDPACE HLDGS INC$4,031,000135,000
+100.0%
0.25%
NVLS  NIVALIS THERAPEUTICS INC$3,976,000
+76.8%
489,0000.0%0.25%
+50.0%
 MEDICINES COnote 2.500% 1/1$3,898,000
+9.8%
3,000,0000.0%0.24%
-7.2%
OTIC SellOTONOMY INC$3,820,000
+0.2%
210,000
-12.5%
0.24%
-15.2%
CRME  CARDIOME PHARMA CORP$3,751,000
-38.9%
1,200,0000.0%0.24%
-48.4%
INVA  INNOVIVA INC$3,703,000
+4.4%
336,9000.0%0.23%
-11.8%
PRGO  PERRIGO CO PLC$3,499,000
+1.8%
37,9000.0%0.22%
-13.8%
AGLE  AEGLEA BIOTHERAPEUTICS INC$3,359,000
+31.9%
524,0890.0%0.21%
+11.6%
MD SellMEDNAX INC$3,313,000
-76.5%
50,000
-74.4%
0.21%
-80.1%
NBRV  NABRIVA THERAPEUTICS AGsponsored adr$3,003,000
-6.0%
426,0000.0%0.19%
-20.7%
STE  STERIS PLC$2,924,000
+6.3%
40,0000.0%0.18%
-10.3%
ITCI  INTRA CELLULAR THERAPIES INC$2,896,000
-60.7%
190,0000.0%0.18%
-66.7%
CDTX  CIDARA THERAPEUTICS INC$2,863,000
+11.1%
250,0000.0%0.18%
-6.3%
ASMB  ASSEMBLY BIOSCIENCES INC$2,812,000
+29.9%
390,0000.0%0.18%
+10.0%
MCRB SellSERES THERAPEUTICS INC$2,704,000
-64.5%
220,000
-16.0%
0.17%
-69.8%
DBVT  DBV TECHNOLOGIES S Asponsored adr$2,652,000
+11.4%
73,0000.0%0.17%
-5.7%
TTPH BuyTETRAPHASE PHARMACEUTICALS I$2,537,000
+38.8%
662,500
+55.9%
0.16%
+17.8%
GNCA  GENOCEA BIOSCIENCES INC$2,458,000
+24.9%
480,0000.0%0.15%
+5.5%
SCYX  SCYNEXIS INC$2,457,000
+78.3%
635,0000.0%0.15%
+51.0%
EGLTQ  EGALET CORP$2,283,000
+53.4%
300,0000.0%0.14%
+30.0%
GBT  GLOBAL BLOOD THERAPEUTICS IN$2,259,000
+38.9%
98,0000.0%0.14%
+18.3%
AMSG NewAMSURG CORP$2,179,00032,500
+100.0%
0.14%
DMTX  DIMENSION THERAPEUTICS INC$2,168,000
+33.2%
271,3700.0%0.14%
+12.4%
NVCR  NOVOCURE LTD$1,830,000
-26.8%
214,3160.0%0.12%
-37.8%
NVAX  NOVAVAX INC$1,773,000
-71.4%
852,5000.0%0.11%
-75.8%
DVAX  DYNAVAX TECHNOLOGIES CORP$1,731,000
-28.1%
165,0000.0%0.11%
-38.8%
VRX BuyVALEANT PHARMACEUTICALS INTL$1,684,000
+26.5%
68,600
+3.8%
0.11%
+7.1%
EXEL NewEXELIXIS INC$1,599,000125,000
+100.0%
0.10%
CHMA  CHIASMA INC$1,448,000
+1.8%
492,5000.0%0.09%
-13.3%
ANTH  ANTHERA PHARMACEUTICALS INC$1,418,000
+1.9%
450,0000.0%0.09%
-13.6%
LIFE  ATYR PHARMA INC$1,379,000
+14.4%
433,5000.0%0.09%
-3.4%
BLUE  BLUEBIRD BIO INC$1,356,000
+56.6%
20,0000.0%0.08%
+32.8%
CERN  CERNER CORP$1,235,000
+5.4%
20,0000.0%0.08%
-11.5%
INSYQ SellINSYS THERAPEUTICS INC NEW$1,179,000
-75.1%
100,000
-72.6%
0.07%
-78.9%
 WRIGHT MED GROUP INCnote 2.000% 2/1$1,073,000
+16.8%
1,000,0000.0%0.07%
-1.5%
MDGL NewMADRIGAL PHARMACEUTICALS INC$799,00063,000
+100.0%
0.05%
CERU  CERULEAN PHARMA INC$654,000
-50.6%
625,0000.0%0.04%
-58.2%
OREXQ NewOREXIGEN THERAPEUTICS INC$549,000165,300
+100.0%
0.03%
INFI  INFINITY PHARMACEUTICALS INC$421,000
+17.3%
270,0000.0%0.03%
-3.7%
ARIA NewARIAD PHARMACEUTICALS INC$342,00025,000
+100.0%
0.02%
MIRN ExitMIRNA THERAPEUTICS INC$0-150,000
-100.0%
-0.05%
OREX ExitOREXIGEN THERAPEUTICS INC$0-1,653,000
-100.0%
-0.05%
SPHS ExitSOPHIRIS BIO INC$0-490,000
-100.0%
-0.08%
RLYP ExitRELYPSA INC$0-75,000
-100.0%
-0.10%
ICPT ExitINTERCEPT PHARMACEUTICALS IN$0-10,000
-100.0%
-0.11%
INOV ExitINOVALON HLDGS INC$0-104,302
-100.0%
-0.14%
TSRO ExitTESARO INCcall$0-40,000
-100.0%
-0.25%
EARS ExitAURIS MED HLDG AG$0-850,000
-100.0%
-0.26%
PTLA ExitPORTOLA PHARMACEUTICALS INC$0-175,000
-100.0%
-0.31%
ExitCORSICANTO LTDnote 3.500% 1/1$0-7,000,000
-100.0%
-0.53%
ARA ExitAMERICAN RENAL ASSOCIATES HO$0-250,000
-100.0%
-0.54%
XNPT ExitXENOPORT INC$0-1,195,000
-100.0%
-0.62%
TMO ExitTHERMO FISHER SCIENTIFIC INC$0-100,200
-100.0%
-1.10%
HTWR ExitHEARTWARE INTL INC$0-311,000
-100.0%
-1.33%
TEVA ExitTEVA PHARMACEUTICAL INDS LTDadr$0-395,000
-100.0%
-1.47%
Original filings

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

  • View 13F-HR filed 2016-11-14
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 2016 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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