Rock Springs Capital Management LP Q2 2019 Filing
Filed August 14, 2019
Portfolio Value
$2.8T
Holdings
135
Report Date
Q2 2019
Filing Type
13F-HR
All Holdings (135 positions)
| # | Stock | Shares | Value | % Portfolio | Type |
|---|---|---|---|---|---|
| 1 | UNHUNITEDHEALTH GROUP INC | 591,000 | $144.2B | 5.22% | |
| 2 | —GW PHARMACEUTICALS PLC | 605,000 | $104.3B | 3.77% | |
| 3 | WCGEURWELLCARE HEALTH PLANS INC | 320,500 | $91.4B | 3.31% | |
| 4 | AMRNAMARIN CORP PLC | 4,525,000 | $87.7B | 3.17% | |
| 5 | NBIXNEUROCRINE BIOSCIENCES INC | 1,023,000 | $86.4B | 3.12% | |
| 6 | ISRGINTUITIVE SURGICAL INC | 152,500 | $80.0B | 2.89% | |
| 7 | HCAHCA HEALTHCARE INC | 455,000 | $61.5B | 2.23% | |
| 8 | PCRXPACIRA BIOSCIENCES | 1,250,000 | $54.4B | 1.97% | |
| 9 | —SPARK THERAPEUTICS INC | 505,371 | $51.7B | 1.87% | |
| 10 | EHCENCOMPASS HEALTH CORP | 805,000 | $51.0B | 1.85% | |
| 11 | SRPTSAREPTA THERAPEUTICS INC | 325,000 | $49.4B | 1.79% | |
| 12 | BMYBRISTOL MYERS SQUIBB CO | 1,050,000 | $47.6B | 1.72% | |
| 13 | EXASEXACT SCIENCES CORP | 397,000 | $46.9B | 1.70% | |
| 14 | TFXTELEFLEX INC | 130,000 | $43.0B | 1.56% | |
| 15 | BSXBOSTON SCIENTIFIC CORP | 970,000 | $41.7B | 1.51% | |
| 16 | CHRSCOHERUS BIOSCIENCES INC | 1,880,000 | $41.5B | 1.50% | |
| 17 | IRTCIRHYTHM TECHNOLOGIES INC | 499,615 | $39.5B | 1.43% | |
| 18 | PENPENUMBRA INC | 239,000 | $38.2B | 1.38% | |
| 19 | VRTXVERTEX PHARMACEUTICALS INC | 203,000 | $37.2B | 1.35% | |
| 20 | ACHCACADIA HEALTHCARE COMPANY IN | 1,055,000 | $36.9B | 1.33% | |
| 21 | RAREULTRAGENYX PHARMACEUTICAL IN | 580,000 | $36.8B | 1.33% | |
| 22 | SYKSTRYKER CORP | 179,000 | $36.8B | 1.33% | |
| 23 | EWEDWARDS LIFESCIENCES CORP | 183,500 | $33.9B | 1.23% | |
| 24 | IDXXIDEXX LABS INC | 120,200 | $33.1B | 1.20% | |
| 25 | ALXNALEXION PHARMACEUTICALS INC | 242,500 | $31.8B | 1.15% | |
| 26 | —RADIUS HEALTH INC | 1,250,000 | $30.4B | 1.10% | |
| 27 | MOHMOLINA HEALTHCARE INC | 206,000 | $29.5B | 1.07% | |
| 28 | PODDINSULET CORP | 244,500 | $29.2B | 1.06% | |
| 29 | —MEDICINES CO | 800,000 | $29.2B | 1.06% | |
| 30 | 2L9BLUEPRINT MEDICINES CORP | 307,500 | $29.0B | 1.05% | |
| 31 | ADPTADAPTIVE BIOTECHNOLOGIES COR | 600,000 | $29.0B | 1.05% | |
| 32 | AFWALIGN TECHNOLOGY INC | 105,000 | $28.7B | 1.04% | |
| 33 | CICIGNA CORP NEW | 182,300 | $28.7B | 1.04% | |
| 34 | —PORTOLA PHARMACEUTICALS INC | 1,008,000 | $27.3B | 0.99% | |
| 35 | MDGLMADRIGAL PHARMACEUTICALS INC | 256,900 | $26.9B | 0.97% | |
| 36 | ONCBEIGENE LTD | 214,800 | $26.6B | 0.96% | |
| 37 | INCYINCYTE CORP | 312,300 | $26.5B | 0.96% | |
| 38 | NVTA1EURINVITAE CORP | 1,125,000 | $26.4B | 0.96% | |
| 39 | ARGXARGENX SE | 181,700 | $25.7B | 0.93% | |
| 40 | BAXBAXTER INTL INC | 300,700 | $24.6B | 0.89% | |
| 41 | ASNDASCENDIS PHARMA A S | 213,500 | $24.6B | 0.89% | |
| 42 | —RA PHARMACEUTICALS INC | 804,000 | $24.2B | 0.87% | |
| 43 | PRAHPRA HEALTH SCIENCES INC | 240,000 | $23.8B | 0.86% | |
| 44 | TMOTHERMO FISHER SCIENTIFIC INC | 81,000 | $23.8B | 0.86% | |
| 45 | ALNYALNYLAM PHARMACEUTICALS INC | 327,700 | $23.8B | 0.86% | |
| 46 | —EPIZYME INC | 1,850,100 | $23.2B | 0.84% | |
| 47 | BIIBBIOGEN INC | 97,500 | $22.8B | 0.82% | Call |
| 48 | IM8NINSMED INC | 890,000 | $22.8B | 0.82% | |
| 49 | GLPGGALAPAGOS NV | 165,000 | $21.3B | 0.77% | |
| 50 | MRTXEURMIRATI THERAPEUTICS INC | 202,500 | $20.9B | 0.75% | |
| 51 | COLLCOLLEGIUM PHARMACEUTICAL INC | 1,577,893 | $20.7B | 0.75% | |
| 52 | ZLABZAI LAB LTD | 550,000 | $19.2B | 0.69% | |
| 53 | —RETROPHIN INC | 950,000 | $19.1B | 0.69% | |
| 54 | —PHASEBIO PHARMACEUTICALS INC | 1,423,256 | $18.7B | 0.68% | |
| 55 | —ALDER BIOPHARMACEUTICALS INC | 1,562,300 | $18.4B | 0.67% | |
| 56 | —INTERSECT ENT INC | 790,000 | $18.0B | 0.65% | |
| 57 | ALLKGUSDALLAKOS INC | 404,000 | $17.5B | 0.63% | |
| 58 | WSTWEST PHARMACEUTICAL SVSC INC | 137,500 | $17.2B | 0.62% | |
| 59 | CELGCELGENE CORP | 185,150 | $17.1B | 0.62% | |
| 60 | SG7SAGE THERAPEUTICS INC | 92,500 | $16.9B | 0.61% | |
| 61 | SGENEURSEATTLE GENETICS INC | 242,000 | $16.7B | 0.61% | |
| 62 | GHGUARDANT HEALTH INC | 190,000 | $16.4B | 0.59% | |
| 63 | AXNX*AXONICS MODULATION TECH INC | 400,000 | $16.4B | 0.59% | |
| 64 | —ODONATE THERAPEUTICS INC | 430,000 | $15.8B | 0.57% | |
| 65 | —AUDENTES THERAPEUTICS INC | 410,000 | $15.5B | 0.56% | |
| 66 | —BIOHAVEN PHARMACTL HLDG CO L | 343,500 | $15.0B | 0.54% | |
| 67 | GBTUSDGLOBAL BLOOD THERAPEUTICS IN | 265,000 | $13.9B | 0.50% | |
| 68 | FGENEURFIBROGEN INC | 306,000 | $13.8B | 0.50% | |
| 69 | AG8AGILENT TECHNOLOGIES INC | 182,800 | $13.7B | 0.49% | |
| 70 | —TRANSLATE BIO INC | 1,009,179 | $12.7B | 0.46% | |
| 71 | NVROEURNEVRO CORP | 195,500 | $12.7B | 0.46% | |
| 72 | —OBSEVA SA | 1,120,000 | $12.7B | 0.46% | |
| 73 | AM6AMICUS THERAPEUTICS INC | 1,000,000 | $12.5B | 0.45% | |
| 74 | —IMMUNOMEDICS INC | 895,000 | $12.4B | 0.45% | |
| 75 | NVCRNOVOCURE LTD | 195,000 | $12.3B | 0.45% | |
| 76 | ANABANAPTYSBIO INC | 218,500 | $12.3B | 0.45% | |
| 77 | BMRNBIOMARIN PHARMACEUTICAL INC | 142,500 | $12.2B | 0.44% | |
| 78 | AXGNAXOGEN INC | 603,970 | $12.0B | 0.43% | |
| 79 | —ZOGENIX INC | 235,000 | $11.2B | 0.41% | |
| 80 | RIGLUSDRIGEL PHARMACEUTICALS INC | 4,200,000 | $11.0B | 0.40% | |
| 81 | ABBVABBVIE INC | 150,000 | $10.9B | 0.39% | |
| 82 | FRPTFRESHPET INC | 235,000 | $10.7B | 0.39% | |
| 83 | TBPHTHERAVANCE BIOPHARMA INC | 550,000 | $9.0B | 0.32% | |
| 84 | AGIOAGIOS PHARMACEUTICALS INC | 170,500 | $8.5B | 0.31% | |
| 85 | FIXXEURHOMOLOGY MEDICINES INC | 425,000 | $8.3B | 0.30% | |
| 86 | —RTI SURGICAL HOLDINGS INC | 1,950,000 | $8.3B | 0.30% | |
| 87 | KRTXKARUNA THERAPEUTICS INC | 413,500 | $8.3B | 0.30% | |
| 88 | —ACHILLION PHARMACEUTICALS IN | 2,950,000 | $7.9B | 0.29% | |
| 89 | ASMBASSEMBLY BIOSCIENCES INC | 560,000 | $7.6B | 0.27% | |
| 90 | —DERMIRA INC | 775,000 | $7.4B | 0.27% | |
| 91 | PBYIPUMA BIOTECHNOLOGY INC | 534,400 | $6.8B | 0.25% | |
| 92 | CBAYUSDCYMABAY THERAPEUTICS INC | 900,000 | $6.4B | 0.23% | |
| 93 | SPROSPERO THERAPEUTICS INC | 525,000 | $6.0B | 0.22% | |
| 94 | —BLUEBIRD BIO INC | 47,000 | $6.0B | 0.22% | |
| 95 | INSM 1.75 01/15/25INSMED INC | 6,000,000 | $5.8B | 0.21% | |
| 96 | —MERSANA THERAPEUTICS INC | 1,400,000 | $5.7B | 0.21% | |
| 97 | ELVANTHEM INC | 20,000 | $5.6B | 0.20% | |
| 98 | AGLEUSDAEGLEA BIOTHERAPEUTICS INC | 800,000 | $5.5B | 0.20% | |
| 99 | ARDXARDELYX INC | 2,000,000 | $5.4B | 0.19% | |
| 100 | —GLOBAL CORD BLOOD CORPORATIO | 925,000 | $5.3B | 0.19% |
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