Rock Springs Capital Management LP Q3 2016 Filing
Filed November 14, 2016
Portfolio Value
$1.6T
Holdings
137
Report Date
Q3 2016
Filing Type
13F-HR
All Holdings (137 positions)
| # | Stock | Shares | Value | % Portfolio | Type |
|---|---|---|---|---|---|
| 1 | —TESARO INC | 626,500 | $62.8B | 3.94% | |
| 2 | —AETNA INC NEW | 440,100 | $50.8B | 3.19% | |
| 3 | —RADIUS HEALTH INC | 892,000 | $48.2B | 3.02% | |
| 4 | ACHCACADIA HEALTHCARE COMPANY IN | 924,678 | $45.8B | 2.87% | |
| 5 | —GW PHARMACEUTICALS PLC | 325,000 | $43.1B | 2.70% | |
| 6 | —ALLERGAN PLC | 186,000 | $42.8B | 2.69% | |
| 7 | —SPARK THERAPEUTICS INC | 625,000 | $37.5B | 2.35% | |
| 8 | MRKMERCK & CO INC | 587,500 | $36.7B | 2.30% | |
| 9 | PFEPFIZER INC | 1,055,800 | $35.8B | 2.24% | |
| 10 | —ADVANCED ACCELERATOR APPLIC | 930,000 | $35.4B | 2.22% | |
| 11 | ALXNALEXION PHARMACEUTICALS INC | 267,250 | $32.7B | 2.05% | |
| 12 | ISRGINTUITIVE SURGICAL INC | 45,000 | $32.6B | 2.04% | |
| 13 | HCAHCA HOLDINGS INC | 430,000 | $32.5B | 2.04% | |
| 14 | CICIGNA CORPORATION | 228,500 | $29.8B | 1.87% | |
| 15 | COLLCOLLEGIUM PHARMACEUTICAL INC | 1,545,000 | $29.8B | 1.87% | |
| 16 | WCGEURWELLCARE HEALTH PLANS INC | 234,500 | $27.5B | 1.72% | |
| 17 | GILDGILEAD SCIENCES INC | 344,000 | $27.2B | 1.71% | |
| 18 | CELGCELGENE CORP | 254,500 | $26.6B | 1.67% | |
| 19 | ACRSACLARIS THERAPEUTICS INC | 1,016,000 | $26.0B | 1.63% | |
| 20 | —MEDICINES CO | 681,000 | $25.7B | 1.61% | |
| 21 | —SHIRE PLC | 132,500 | $25.7B | 1.61% | |
| 22 | ARDXARDELYX INC | 1,975,000 | $25.6B | 1.60% | |
| 23 | LLYLILLY ELI & CO | 276,000 | $22.2B | 1.39% | |
| 24 | TBPHTHERAVANCE BIOPHARMA INC | 600,000 | $21.7B | 1.36% | |
| 25 | CLSDUSDCLEARSIDE BIOMEDICAL INC | 1,225,000 | $21.3B | 1.33% | |
| 26 | NBIXNEUROCRINE BIOSCIENCES INC | 410,000 | $20.8B | 1.30% | |
| 27 | PENPENUMBRA INC | 266,500 | $20.3B | 1.27% | |
| 28 | PRTAPROTHENA CORP PLC | 308,000 | $18.5B | 1.16% | |
| 29 | BIIBBIOGEN INC | 58,000 | $18.2B | 1.14% | |
| 30 | PCRXPACIRA PHARMACEUTICALS INC | 504,000 | $17.2B | 1.08% | |
| 31 | AMRNAMARIN CORP PLC | 4,955,746 | $15.8B | 0.99% | |
| 32 | AMGNAMGEN INC | 94,000 | $15.7B | 0.98% | |
| 33 | —WRIGHT MED GROUP N V | 613,000 | $15.0B | 0.94% | |
| 34 | INCYINCYTE CORP | 156,500 | $14.8B | 0.92% | |
| 35 | PRAHPRA HEALTH SCIENCES INC | 253,000 | $14.3B | 0.90% | |
| 36 | MCKMCKESSON CORP | 82,000 | $13.7B | 0.86% | |
| 37 | GLPGGALAPAGOS NV | 210,000 | $13.6B | 0.85% | |
| 38 | BMYBRISTOL MYERS SQUIBB CO | 250,000 | $13.5B | 0.84% | |
| 39 | JAZZJAZZ PHARMACEUTICALS PLC | 107,000 | $13.0B | 0.81% | |
| 40 | WBAWALGREENS BOOTS ALLIANCE INC | 161,000 | $13.0B | 0.81% | |
| 41 | DHRDANAHER CORP DEL | 160,000 | $12.5B | 0.79% | |
| 42 | CHRSCOHERUS BIOSCIENCES INC | 467,500 | $12.5B | 0.78% | |
| 43 | EWEDWARDS LIFESCIENCES CORP | 103,250 | $12.4B | 0.78% | |
| 44 | —THERAPEUTICSMD INC | 1,800,000 | $12.3B | 0.77% | |
| 45 | —DERMIRA INC | 355,000 | $12.0B | 0.75% | |
| 46 | —PATHEON N V | 400,000 | $11.9B | 0.74% | |
| 47 | —RETROPHIN INC | 522,000 | $11.7B | 0.73% | |
| 48 | BMRNBIOMARIN PHARMACEUTICAL INC | 125,000 | $11.6B | 0.72% | |
| 49 | —HEALTHSOUTH CORP | 265,000 | $10.8B | 0.67% | |
| 50 | —ACHILLION PHARMACEUTICALS IN | 1,316,000 | $10.7B | 0.67% | |
| 51 | SRPTSAREPTA THERAPEUTICS INC | 173,000 | $10.6B | 0.67% | |
| 52 | RAREULTRAGENYX PHARMACEUTICAL IN | 147,000 | $10.4B | 0.65% | |
| 53 | HOLXHOLOGIC INC | 252,500 | $9.8B | 0.61% | |
| 54 | —FIVE PRIME THERAPEUTICS INC | 166,250 | $8.7B | 0.55% | |
| 55 | —AUDENTES THERAPEUTICS INC | 485,000 | $8.6B | 0.54% | |
| 56 | ALKSALKERMES PLC | 183,027 | $8.6B | 0.54% | |
| 57 | EXASEXACT SCIENCES CORP | 435,000 | $8.1B | 0.51% | |
| 58 | VRTXVERTEX PHARMACEUTICALS INC | 89,750 | $7.8B | 0.49% | |
| 59 | NVTA1EURINVITAE CORP | 890,000 | $7.8B | 0.49% | |
| 60 | WTWWILLIS TOWERS WATSON PUB LTD | 58,500 | $7.8B | 0.49% | |
| 61 | HRCHILL ROM HLDGS INC | 120,000 | $7.4B | 0.47% | |
| 62 | CRVSCORVUS PHARMACEUTICALS INC | 450,000 | $7.4B | 0.46% | |
| 63 | IM8NINSMED INC | 503,000 | $7.3B | 0.46% | |
| 64 | —PROTEOSTASIS THERAPEUTICS IN | 450,000 | $7.0B | 0.44% | |
| 65 | ONCBEIGENE LTD | 225,000 | $6.9B | 0.43% | |
| 66 | REGNREGENERON PHARMACEUTICALS | 17,000 | $6.8B | 0.43% | |
| 67 | —OPHTHOTECH CORP | 148,000 | $6.8B | 0.43% | |
| 68 | MGNXMACROGENICS INC | 225,000 | $6.7B | 0.42% | |
| 69 | —EGALET CORP | 7,800,000 | $6.7B | 0.42% | |
| 70 | RIGLUSDRIGEL PHARMACEUTICALS INC | 1,810,000 | $6.6B | 0.42% | |
| 71 | LGNDLIGAND PHARMACEUTICALS INC | 65,000 | $6.6B | 0.42% | |
| 72 | —PARATEK PHARMACEUTICALS INC | 502,500 | $6.5B | 0.41% | |
| 73 | —ENVISION HEALTHCARE HLDGS IN | 291,000 | $6.5B | 0.41% | |
| 74 | —NOVADAQ TECHNOLOGIES INC | 555,000 | $6.4B | 0.40% | |
| 75 | MRUSMERUS N V | 383,000 | $6.4B | 0.40% | |
| 76 | —EPIZYME INC | 642,500 | $6.3B | 0.40% | |
| 77 | ASNDASCENDIS PHARMA A S | 300,000 | $6.0B | 0.38% | |
| 78 | —ALDER BIOPHARMACEUTICALS INC | 182,000 | $6.0B | 0.37% | |
| 79 | —JUNO THERAPEUTICS INC | 197,001 | $5.9B | 0.37% | |
| 80 | —RTI SURGICAL INC | 1,860,000 | $5.8B | 0.36% | |
| 81 | —ATHENAHEALTH INC | 45,750 | $5.8B | 0.36% | |
| 82 | —AVEXIS INC | 140,000 | $5.8B | 0.36% | |
| 83 | —ENDOCHOICE HLDGS INC | 722,500 | $5.8B | 0.36% | |
| 84 | —INTERSECT ENT INC | 345,000 | $5.5B | 0.34% | |
| 85 | CGENCOMPUGEN LTD | 825,000 | $5.2B | 0.33% | |
| 86 | —ADURO BIOTECH INC | 415,000 | $5.2B | 0.32% | |
| 87 | AM6AMICUS THERAPEUTICS INC | 695,000 | $5.1B | 0.32% | |
| 88 | FGENEURFIBROGEN INC | 233,500 | $4.8B | 0.30% | |
| 89 | ADAPYADAPTIMMUNE THERAPEUTICS PLC | 675,000 | $4.8B | 0.30% | |
| 90 | PBYIPUMA BIOTECHNOLOGY INC | 69,500 | $4.7B | 0.29% | |
| 91 | —TANDEM DIABETES CARE INC | 595,000 | $4.6B | 0.29% | |
| 92 | CLVSEURCLOVIS ONCOLOGY INC | 125,000 | $4.5B | 0.28% | |
| 93 | —CHINA CORD BLOOD CORP | 880,000 | $4.5B | 0.28% | |
| 94 | —KITE PHARMA INC | 79,000 | $4.4B | 0.28% | |
| 95 | —AIMMUNE THERAPEUTICS INC | 293,000 | $4.4B | 0.28% | |
| 96 | —BIOSCRIP INC | 1,490,492 | $4.3B | 0.27% | |
| 97 | —ALLERGAN PLC | 5,000 | $4.1B | 0.26% | |
| 98 | MEDPMEDPACE HLDGS INC | 135,000 | $4.0B | 0.25% | |
| 99 | —NIVALIS THERAPEUTICS INC | 489,000 | $4.0B | 0.25% | |
| 100 | —MEDICINES CO | 3,000,000 | $3.9B | 0.24% |
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