Rock Springs Capital Management LP Q1 2016 Filing
Filed May 16, 2016
Portfolio Value
$1.2T
Holdings
127
Report Date
Q1 2016
Filing Type
13F-HR
All Holdings (127 positions)
| # | Stock | Shares | Value | % Portfolio | Type |
|---|---|---|---|---|---|
| 1 | —AETNA INC NEW | 411,000 | $46.2B | 3.87% | |
| 2 | —ALLERGAN PLC | 171,000 | $45.8B | 3.84% | |
| 3 | ACHCACADIA HEALTHCARE COMPANY IN | 749,500 | $41.3B | 3.46% | |
| 4 | HCAHCA HOLDINGS INC | 430,000 | $33.6B | 2.81% | |
| 5 | —BAXALTA INC | 810,000 | $32.7B | 2.74% | |
| 6 | ALXNALEXION PHARMACEUTICALS INC | 227,750 | $31.7B | 2.66% | |
| 7 | PFEPFIZER INC | 1,038,300 | $30.8B | 2.58% | |
| 8 | GILDGILEAD SCIENCES INC | 330,300 | $30.3B | 2.54% | |
| 9 | —ADVANCED ACCELERATOR APPLIC | 833,000 | $29.2B | 2.44% | |
| 10 | —RADIUS HEALTH INC | 808,500 | $25.4B | 2.13% | |
| 11 | ISRGINTUITIVE SURGICAL INC | 42,000 | $25.2B | 2.12% | |
| 12 | CELGCELGENE CORP | 239,500 | $24.0B | 2.01% | |
| 13 | WCGEURWELLCARE HEALTH PLANS INC | 230,000 | $21.3B | 1.79% | |
| 14 | TEVATEVA PHARMACEUTICAL INDS LTD | 395,000 | $21.1B | 1.77% | |
| 15 | COLLCOLLEGIUM PHARMACEUTICAL INC | 1,145,000 | $20.8B | 1.74% | |
| 16 | —MEDICINES CO | 632,000 | $20.1B | 1.68% | |
| 17 | LLYLILLY ELI & CO | 276,000 | $19.9B | 1.67% | |
| 18 | PCRXPACIRA PHARMACEUTICALS INC | 326,500 | $17.3B | 1.45% | |
| 19 | —SPARK THERAPEUTICS INC | 580,500 | $17.1B | 1.44% | |
| 20 | ACRSACLARIS THERAPEUTICS INC | 895,500 | $17.0B | 1.42% | |
| 21 | ELVANTHEM INC | 121,000 | $16.8B | 1.41% | |
| 22 | CICIGNA CORPORATION | 122,000 | $16.7B | 1.40% | |
| 23 | —TESARO INC | 379,500 | $16.7B | 1.40% | |
| 24 | NBIXNEUROCRINE BIOSCIENCES INC | 404,500 | $16.0B | 1.34% | |
| 25 | TMOTHERMO FISHER SCIENTIFIC INC | 100,200 | $14.2B | 1.19% | |
| 26 | AMGNAMGEN INC | 94,000 | $14.1B | 1.18% | |
| 27 | BIIBBIOGEN INC | 53,150 | $13.8B | 1.16% | |
| 28 | PRTAPROTHENA CORP PLC | 308,000 | $12.7B | 1.06% | |
| 29 | MDMEDNAX INC | 195,000 | $12.6B | 1.06% | |
| 30 | TBPHTHERAVANCE BIOPHARMA INC | 650,500 | $12.2B | 1.02% | |
| 31 | MCKMCKESSON CORP | 77,500 | $12.2B | 1.02% | |
| 32 | JAZZJAZZ PHARMACEUTICALS PLC | 85,500 | $11.2B | 0.94% | |
| 33 | BMYBRISTOL MYERS SQUIBB CO | 170,000 | $10.9B | 0.91% | |
| 34 | PRAHPRA HEALTH SCIENCES INC | 253,000 | $10.8B | 0.91% | |
| 35 | —GW PHARMACEUTICALS PLC | 147,000 | $10.6B | 0.89% | |
| 36 | PENPENUMBRA INC | 228,500 | $10.5B | 0.88% | |
| 37 | WBAWALGREENS BOOTS ALLIANCE INC | 123,500 | $10.4B | 0.87% | |
| 38 | —THERAPEUTICSMD INC | 1,575,000 | $10.1B | 0.84% | |
| 39 | —ANACOR PHARMACEUTICALS INC | 177,500 | $9.5B | 0.79% | |
| 40 | INCYINCYTE CORP | 130,500 | $9.5B | 0.79% | |
| 41 | —ACHILLION PHARMACEUTICALS IN | 1,220,000 | $9.4B | 0.79% | |
| 42 | GLPGGALAPAGOS NV | 210,000 | $8.8B | 0.74% | |
| 43 | BMRNBIOMARIN PHARMACEUTICAL INC | 103,250 | $8.5B | 0.71% | |
| 44 | ARDXARDELYX INC | 1,060,400 | $8.2B | 0.69% | |
| 45 | —WRIGHT MED GROUP N V | 490,000 | $8.1B | 0.68% | |
| 46 | —INOVALON HLDGS INC | 427,300 | $7.9B | 0.66% | |
| 47 | —HEALTHSOUTH CORP | 208,000 | $7.8B | 0.66% | |
| 48 | NVTA1EURINVITAE CORP | 752,500 | $7.7B | 0.64% | |
| 49 | —JUNO THERAPEUTICS INC | 197,001 | $7.5B | 0.63% | |
| 50 | RAREULTRAGENYX PHARMACEUTICAL IN | 118,500 | $7.5B | 0.63% | |
| 51 | —RTI SURGICAL INC | 1,860,000 | $7.4B | 0.62% | |
| 52 | COOCOOPER COS INC | 47,600 | $7.3B | 0.61% | |
| 53 | —EPIZYME INC | 589,000 | $7.1B | 0.60% | |
| 54 | —RETROPHIN INC | 521,400 | $7.1B | 0.60% | |
| 55 | MCRB1EURSERES THERAPEUTICS INC | 262,000 | $7.0B | 0.58% | |
| 56 | EWEDWARDS LIFESCIENCES CORP | 76,000 | $6.7B | 0.56% | |
| 57 | VRTXVERTEX PHARMACEUTICALS INC | 83,900 | $6.7B | 0.56% | |
| 58 | ALKSALKERMES PLC | 194,500 | $6.7B | 0.56% | |
| 59 | CRVSCORVUS PHARMACEUTICALS INC | 456,887 | $6.6B | 0.56% | |
| 60 | ONCBEIGENE LTD | 225,000 | $6.6B | 0.55% | |
| 61 | —INTERSECT ENT INC | 340,000 | $6.5B | 0.54% | |
| 62 | —ATHENAHEALTH INC | 45,750 | $6.3B | 0.53% | |
| 63 | ADAPYADAPTIMMUNE THERAPEUTICS PLC | 765,001 | $6.2B | 0.52% | |
| 64 | —NOVADAQ TECHNOLOGIES INC | 555,000 | $6.2B | 0.52% | |
| 65 | —HEARTWARE INTL INC | 193,000 | $6.1B | 0.51% | |
| 66 | —DERMIRA INC | 290,000 | $6.0B | 0.50% | |
| 67 | CHRSCOHERUS BIOSCIENCES INC | 282,000 | $6.0B | 0.50% | |
| 68 | REGNREGENERON PHARMACEUTICALS | 16,500 | $5.9B | 0.50% | |
| 69 | —FIVE PRIME THERAPEUTICS INC | 144,500 | $5.9B | 0.49% | |
| 70 | INSYEURINSYS THERAPEUTICS INC NEW | 365,500 | $5.8B | 0.49% | |
| 71 | IM8NINSMED INC | 450,000 | $5.7B | 0.48% | |
| 72 | —ENVISION HEALTHCARE HLDGS IN | 266,000 | $5.4B | 0.45% | |
| 73 | —CHINA CORD BLOOD CORP | 880,000 | $5.3B | 0.45% | |
| 74 | —ADURO BIOTECH INC | 415,000 | $5.3B | 0.45% | |
| 75 | ITCIEURINTRA CELLULAR THERAPIES INC | 187,500 | $5.2B | 0.44% | |
| 76 | AM6AMICUS THERAPEUTICS INC | 613,500 | $5.2B | 0.43% | |
| 77 | ASNDASCENDIS PHARMA A S | 270,000 | $5.0B | 0.42% | |
| 78 | —XENOPORT INC | 1,100,000 | $5.0B | 0.42% | |
| 79 | —TANDEM DIABETES CARE INC | 562,500 | $4.9B | 0.41% | |
| 80 | —CARDIOME PHARMA CORP | 1,190,000 | $4.9B | 0.41% | |
| 81 | —ALLERGAN PLC | 5,000 | $4.6B | 0.38% | |
| 82 | CGENCOMPUGEN LTD | 820,000 | $4.6B | 0.38% | |
| 83 | —PROTEOSTASIS THERAPEUTICS IN | 470,000 | $4.5B | 0.38% | |
| 84 | —CHIASMA INC | 492,500 | $4.5B | 0.38% | |
| 85 | NVAXNOVAVAX INC | 852,500 | $4.4B | 0.37% | |
| 86 | FGENEURFIBROGEN INC | 204,000 | $4.3B | 0.36% | |
| 87 | —PORTOLA PHARMACEUTICALS INC | 210,000 | $4.3B | 0.36% | Call |
| 88 | MGNXMACROGENICS INC | 225,000 | $4.2B | 0.35% | |
| 89 | —AIMMUNE THERAPEUTICS INC | 293,000 | $4.0B | 0.33% | |
| 90 | —AVEXIS INC | 142,758 | $3.9B | 0.33% | |
| 91 | PRGOPERRIGO CO PLC | 30,000 | $3.8B | 0.32% | |
| 92 | —GENOCEA BIOSCIENCES INC | 480,000 | $3.7B | 0.31% | |
| 93 | —KITE PHARMA INC | 80,000 | $3.7B | 0.31% | |
| 94 | OTICEUROTONOMY INC | 240,000 | $3.6B | 0.30% | |
| 95 | —NABRIVA THERAPEUTICS AG | 380,000 | $3.4B | 0.29% | |
| 96 | —MEDICINES CO | 3,000,000 | $3.4B | 0.29% | |
| 97 | —PARATEK PHARMACEUTICALS INC | 223,000 | $3.4B | 0.28% | |
| 98 | —CIDARA THERAPEUTICS INC | 250,000 | $3.2B | 0.27% | |
| 99 | DVAXDYNAVAX TECHNOLOGIES CORP | 165,000 | $3.2B | 0.27% | |
| 100 | NVCRNOVOCURE LTD | 214,316 | $3.1B | 0.26% |
Page 1 of 2Next