Rock Springs Capital Management LP Q2 2016 Filing
Filed August 15, 2016
Portfolio Value
$1.4T
Holdings
136
Report Date
Q2 2016
Filing Type
13F-HR
All Holdings (136 positions)
| # | Stock | Shares | Value | % Portfolio | Type |
|---|---|---|---|---|---|
| 1 | —AETNA INC NEW | 440,100 | $53.7B | 3.98% | |
| 2 | ACHCACADIA HEALTHCARE COMPANY IN | 837,000 | $46.4B | 3.43% | |
| 3 | —TESARO INC | 520,000 | $43.7B | 3.24% | Call |
| 4 | —ALLERGAN PLC | 181,100 | $41.9B | 3.10% | |
| 5 | PFEPFIZER INC | 1,055,800 | $37.2B | 2.75% | |
| 6 | HCAHCA HOLDINGS INC | 430,000 | $33.1B | 2.45% | |
| 7 | —RADIUS HEALTH INC | 867,500 | $31.9B | 2.36% | |
| 8 | —SPARK THERAPEUTICS INC | 610,000 | $31.2B | 2.31% | |
| 9 | ISRGINTUITIVE SURGICAL INC | 44,000 | $29.1B | 2.15% | |
| 10 | GILDGILEAD SCIENCES INC | 343,700 | $28.7B | 2.12% | |
| 11 | —ADVANCED ACCELERATOR APPLIC | 921,000 | $27.8B | 2.06% | |
| 12 | ALXNALEXION PHARMACEUTICALS INC | 235,500 | $27.5B | 2.04% | |
| 13 | CICIGNA CORPORATION | 206,800 | $26.5B | 1.96% | |
| 14 | WCGEURWELLCARE HEALTH PLANS INC | 234,500 | $25.2B | 1.86% | |
| 15 | CELGCELGENE CORP | 254,500 | $25.1B | 1.86% | |
| 16 | —GW PHARMACEUTICALS PLC | 270,000 | $24.7B | 1.83% | |
| 17 | —MEDICINES CO | 680,500 | $22.9B | 1.69% | |
| 18 | —SHIRE PLC | 120,042 | $22.1B | 1.64% | |
| 19 | LLYLILLY ELI & CO | 276,000 | $21.7B | 1.61% | |
| 20 | TEVATEVA PHARMACEUTICAL INDS LTD | 395,000 | $19.8B | 1.47% | |
| 21 | NBIXNEUROCRINE BIOSCIENCES INC | 409,500 | $18.6B | 1.38% | |
| 22 | ACRSACLARIS THERAPEUTICS INC | 1,000,000 | $18.5B | 1.37% | |
| 23 | —HEARTWARE INTL INC | 311,000 | $18.0B | 1.33% | |
| 24 | PCRXPACIRA PHARMACEUTICALS INC | 472,500 | $15.9B | 1.18% | |
| 25 | TBPHTHERAVANCE BIOPHARMA INC | 700,000 | $15.9B | 1.18% | |
| 26 | TMOTHERMO FISHER SCIENTIFIC INC | 100,200 | $14.8B | 1.10% | |
| 27 | MCKMCKESSON CORP | 77,900 | $14.5B | 1.08% | |
| 28 | BMYBRISTOL MYERS SQUIBB CO | 196,500 | $14.5B | 1.07% | |
| 29 | PENPENUMBRA INC | 242,500 | $14.4B | 1.07% | |
| 30 | JAZZJAZZ PHARMACEUTICALS PLC | 102,000 | $14.4B | 1.07% | |
| 31 | COLLCOLLEGIUM PHARMACEUTICAL INC | 1,215,000 | $14.4B | 1.07% | |
| 32 | AMGNAMGEN INC | 94,000 | $14.3B | 1.06% | |
| 33 | MDMEDNAX INC | 195,000 | $14.1B | 1.05% | |
| 34 | BIIBBIOGEN INC | 57,650 | $13.9B | 1.03% | |
| 35 | —THERAPEUTICSMD INC | 1,575,000 | $13.4B | 0.99% | |
| 36 | WBAWALGREENS BOOTS ALLIANCE INC | 160,400 | $13.4B | 0.99% | |
| 37 | INCYINCYTE CORP | 155,000 | $12.4B | 0.92% | |
| 38 | GLPGGALAPAGOS NV | 210,000 | $11.6B | 0.86% | |
| 39 | ARDXARDELYX INC | 1,275,000 | $11.1B | 0.82% | |
| 40 | PRTAPROTHENA CORP PLC | 308,000 | $10.8B | 0.80% | |
| 41 | PRAHPRA HEALTH SCIENCES INC | 253,000 | $10.6B | 0.78% | |
| 42 | —DERMIRA INC | 354,900 | $10.4B | 0.77% | |
| 43 | —HEALTHSOUTH CORP | 265,000 | $10.3B | 0.76% | |
| 44 | —ACHILLION PHARMACEUTICALS IN | 1,312,500 | $10.2B | 0.76% | |
| 45 | —WRIGHT MED GROUP N V | 547,900 | $9.5B | 0.70% | |
| 46 | CLSDUSDCLEARSIDE BIOMEDICAL INC | 1,353,326 | $9.5B | 0.70% | |
| 47 | —RETROPHIN INC | 521,400 | $9.3B | 0.69% | |
| 48 | BMRNBIOMARIN PHARMACEUTICAL INC | 113,000 | $8.8B | 0.65% | |
| 49 | —XENOPORT INC | 1,195,000 | $8.4B | 0.62% | |
| 50 | ALKSALKERMES PLC | 194,500 | $8.4B | 0.62% | |
| 51 | EWEDWARDS LIFESCIENCES CORP | 83,500 | $8.3B | 0.62% | |
| 52 | HOLXHOLOGIC INC | 230,000 | $8.0B | 0.59% | |
| 53 | MCRB1EURSERES THERAPEUTICS INC | 262,000 | $7.6B | 0.56% | |
| 54 | —JUNO THERAPEUTICS INC | 197,001 | $7.6B | 0.56% | |
| 55 | —ENVISION HEALTHCARE HLDGS IN | 291,000 | $7.4B | 0.55% | |
| 56 | ITCIEURINTRA CELLULAR THERAPIES INC | 190,000 | $7.4B | 0.55% | |
| 57 | VRTXVERTEX PHARMACEUTICALS INC | 85,500 | $7.4B | 0.54% | |
| 58 | —OPHTHOTECH CORP | 142,500 | $7.3B | 0.54% | |
| 59 | —AMERICAN RENAL ASSOCIATES HO | 250,000 | $7.2B | 0.54% | |
| 60 | —CORSICANTO LTD | 7,000,000 | $7.2B | 0.53% | |
| 61 | RAREULTRAGENYX PHARMACEUTICAL IN | 141,500 | $6.9B | 0.51% | |
| 62 | CHRSCOHERUS BIOSCIENCES INC | 400,000 | $6.8B | 0.50% | |
| 63 | ONCBEIGENE LTD | 225,000 | $6.7B | 0.50% | |
| 64 | —RTI SURGICAL INC | 1,860,000 | $6.7B | 0.49% | |
| 65 | CRVSCORVUS PHARMACEUTICALS INC | 450,000 | $6.4B | 0.48% | |
| 66 | NVTA1EURINVITAE CORP | 858,380 | $6.3B | 0.47% | |
| 67 | —FIVE PRIME THERAPEUTICS INC | 153,000 | $6.3B | 0.47% | |
| 68 | —ATHENAHEALTH INC | 45,750 | $6.3B | 0.47% | |
| 69 | ADAPYADAPTIMMUNE THERAPEUTICS PLC | 765,001 | $6.2B | 0.46% | |
| 70 | NVAXNOVAVAX INC | 852,500 | $6.2B | 0.46% | |
| 71 | —CARDIOME PHARMA CORP | 1,200,000 | $6.1B | 0.45% | |
| 72 | —EPIZYME INC | 597,500 | $6.1B | 0.45% | |
| 73 | MGNXMACROGENICS INC | 225,000 | $6.1B | 0.45% | |
| 74 | HRCHILL ROM HLDGS INC | 120,000 | $6.1B | 0.45% | |
| 75 | REGNREGENERON PHARMACEUTICALS | 17,000 | $5.9B | 0.44% | |
| 76 | —EGALET CORP | 7,800,000 | $5.9B | 0.44% | |
| 77 | —PARATEK PHARMACEUTICALS INC | 418,500 | $5.8B | 0.43% | |
| 78 | —NOVADAQ TECHNOLOGIES INC | 555,000 | $5.5B | 0.40% | |
| 79 | —AVEXIS INC | 142,758 | $5.4B | 0.40% | |
| 80 | CGENCOMPUGEN LTD | 820,000 | $5.3B | 0.39% | |
| 81 | —CHINA CORD BLOOD CORP | 880,000 | $5.1B | 0.37% | |
| 82 | —PROTEOSTASIS THERAPEUTICS IN | 415,000 | $5.0B | 0.37% | |
| 83 | IM8NINSMED INC | 497,500 | $4.9B | 0.36% | |
| 84 | INSYEURINSYS THERAPEUTICS INC NEW | 365,500 | $4.7B | 0.35% | |
| 85 | —ADURO BIOTECH INC | 415,000 | $4.7B | 0.35% | |
| 86 | —ALDER BIOPHARMACEUTICALS INC | 180,500 | $4.5B | 0.33% | |
| 87 | —TANDEM DIABETES CARE INC | 595,000 | $4.5B | 0.33% | |
| 88 | —INTERSECT ENT INC | 340,000 | $4.4B | 0.33% | |
| 89 | —ALLERGAN PLC | 5,000 | $4.2B | 0.31% | |
| 90 | —PORTOLA PHARMACEUTICALS INC | 175,000 | $4.1B | 0.31% | |
| 91 | —KITE PHARMA INC | 80,000 | $4.0B | 0.30% | |
| 92 | ASNDASCENDIS PHARMA A S | 300,000 | $4.0B | 0.29% | |
| 93 | RIGLUSDRIGEL PHARMACEUTICALS INC | 1,750,000 | $3.9B | 0.29% | |
| 94 | OTICEUROTONOMY INC | 240,000 | $3.8B | 0.28% | |
| 95 | AM6AMICUS THERAPEUTICS INC | 680,000 | $3.7B | 0.27% | |
| 96 | FGENEURFIBROGEN INC | 225,000 | $3.7B | 0.27% | |
| 97 | —AURIS MED HLDG AG | 850,000 | $3.6B | 0.26% | |
| 98 | —MEDICINES CO | 3,000,000 | $3.5B | 0.26% | |
| 99 | INVAINNOVIVA INC | 336,900 | $3.5B | 0.26% | |
| 100 | —ENDOCHOICE HLDGS INC | 710,000 | $3.5B | 0.26% |
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