Rock Springs Capital Management LP Q4 2019 Filing
Filed February 14, 2020
Portfolio Value
$3.2T
Holdings
130
Report Date
Q4 2019
Filing Type
13F-HR
All Holdings (130 positions)
| # | Stock | Shares | Value | % Portfolio | Type |
|---|---|---|---|---|---|
| 1 | UNHUNITEDHEALTH GROUP INC | 591,000 | $173.7B | 5.49% | |
| 2 | NBIXNEUROCRINE BIOSCIENCES INC | 1,278,000 | $137.4B | 4.34% | |
| 3 | WCGEURWELLCARE HEALTH PLANS INC | 320,500 | $105.8B | 3.34% | |
| 4 | AMRNAMARIN CORP PLC | 4,650,000 | $99.7B | 3.15% | |
| 5 | ISRGINTUITIVE SURGICAL INC | 152,500 | $90.2B | 2.85% | |
| 6 | JNJJOHNSON & JOHNSON | 557,500 | $81.3B | 2.57% | |
| 7 | HCAHCA HEALTHCARE INC | 467,500 | $69.1B | 2.18% | |
| 8 | HUMHUMANA INC | 185,000 | $67.8B | 2.14% | |
| 9 | EHCENCOMPASS HEALTH CORP | 815,000 | $56.5B | 1.78% | |
| 10 | BSXBOSTON SCIENTIFIC CORP | 1,200,000 | $54.3B | 1.71% | |
| 11 | PCRXPACIRA BIOSCIENCES | 1,150,000 | $52.1B | 1.65% | |
| 12 | —EPIZYME INC | 2,050,000 | $50.4B | 1.59% | |
| 13 | TFXTELEFLEX INC | 130,000 | $48.9B | 1.55% | |
| 14 | PODDINSULET CORP | 260,500 | $44.6B | 1.41% | |
| 15 | SRPTSAREPTA THERAPEUTICS INC | 345,500 | $44.6B | 1.41% | |
| 16 | VRTXVERTEX PHARMACEUTICALS INC | 203,000 | $44.4B | 1.40% | |
| 17 | BAXBAXTER INTL INC | 525,000 | $43.9B | 1.39% | |
| 18 | EWEDWARDS LIFESCIENCES CORP | 183,500 | $42.8B | 1.35% | |
| 19 | IRTCIRHYTHM TECHNOLOGIES INC | 624,000 | $42.5B | 1.34% | |
| 20 | ALNYALNYLAM PHARMACEUTICALS INC | 364,000 | $41.9B | 1.32% | |
| 21 | PENPENUMBRA INC | 242,500 | $39.8B | 1.26% | |
| 22 | ARGXARGENX SE | 247,500 | $39.7B | 1.26% | |
| 23 | EXASEXACT SCIENCES CORP | 420,000 | $38.8B | 1.23% | |
| 24 | MRTXEURMIRATI THERAPEUTICS INC | 300,000 | $38.7B | 1.22% | |
| 25 | ARDXARDELYX INC | 4,850,000 | $36.4B | 1.15% | |
| 26 | GLPGGALAPAGOS NV | 175,000 | $36.2B | 1.14% | |
| 27 | ONCBEIGENE LTD | 214,800 | $35.6B | 1.12% | |
| 28 | —RA PHARMACEUTICALS INC | 750,000 | $35.2B | 1.11% | |
| 29 | CHRSCOHERUS BIOSCIENCES INC | 1,950,000 | $35.1B | 1.11% | |
| 30 | APREAPREA THERAPEUTICS INC | 723,991 | $33.2B | 1.05% | |
| 31 | NVROEURNEVRO CORP | 279,000 | $32.8B | 1.04% | |
| 32 | COLLCOLLEGIUM PHARMACEUTICAL INC | 1,575,000 | $32.4B | 1.02% | |
| 33 | ACHCACADIA HEALTHCARE COMPANY IN | 975,000 | $32.4B | 1.02% | |
| 34 | IDXXIDEXX LABS INC | 120,200 | $31.4B | 0.99% | |
| 35 | AFWALIGN TECHNOLOGY INC | 110,900 | $30.9B | 0.98% | |
| 36 | ASMBASSEMBLY BIOSCIENCES INC | 1,500,000 | $30.7B | 0.97% | |
| 37 | AGIOAGIOS PHARMACEUTICALS INC | 641,500 | $30.6B | 0.97% | |
| 38 | 2L9BLUEPRINT MEDICINES CORP | 382,000 | $30.6B | 0.97% | |
| 39 | MIRMMIRUM PHARMACEUTICALS INC | 1,245,000 | $30.5B | 0.96% | |
| 40 | AXNX*AXONICS MODULATION TECH INC | 1,100,000 | $30.5B | 0.96% | |
| 41 | AMGNAMGEN INC | 126,000 | $30.4B | 0.96% | |
| 42 | RAREULTRAGENYX PHARMACEUTICAL IN | 700,000 | $29.9B | 0.94% | |
| 43 | ASNDASCENDIS PHARMA A S | 213,500 | $29.7B | 0.94% | |
| 44 | QUREUNIQURE NV | 400,000 | $28.7B | 0.91% | |
| 45 | ACADACADIA PHARMACEUTICALS INC | 670,000 | $28.7B | 0.91% | |
| 46 | BMRNBIOMARIN PHARMACEUTICAL INC | 337,500 | $28.5B | 0.90% | |
| 47 | SGENEURSEATTLE GENETICS INC | 242,000 | $27.7B | 0.87% | |
| 48 | TMOTHERMO FISHER SCIENTIFIC INC | 81,000 | $26.3B | 0.83% | |
| 49 | DCPHEURDECIPHERA PHARMACEUTICALS IN | 421,890 | $26.3B | 0.83% | |
| 50 | —MEDICINES CO | 307,699 | $26.1B | 0.83% | |
| 51 | ZLABZAI LAB LTD | 625,000 | $26.0B | 0.82% | |
| 52 | —AUDENTES THERAPEUTICS INC | 410,000 | $24.5B | 0.78% | |
| 53 | WSTWEST PHARMACEUTICAL SVSC INC | 152,500 | $22.9B | 0.72% | |
| 54 | MDGLMADRIGAL PHARMACEUTICALS INC | 250,200 | $22.8B | 0.72% | |
| 55 | ALLKGUSDALLAKOS INC | 235,000 | $22.4B | 0.71% | |
| 56 | —ACHILLION PHARMACEUTICALS IN | 3,685,000 | $22.2B | 0.70% | |
| 57 | INCYINCYTE CORP | 250,000 | $21.8B | 0.69% | |
| 58 | —PORTOLA PHARMACEUTICALS INC | 900,000 | $21.5B | 0.68% | |
| 59 | —IMMUNOMEDICS INC | 1,000,000 | $21.2B | 0.67% | |
| 60 | GBTUSDGLOBAL BLOOD THERAPEUTICS IN | 265,000 | $21.1B | 0.67% | |
| 61 | FRPTFRESHPET INC | 355,250 | $21.0B | 0.66% | |
| 62 | —RADIUS HEALTH INC | 1,000,200 | $20.2B | 0.64% | |
| 63 | —INTERSECT ENT INC | 800,000 | $19.9B | 0.63% | |
| 64 | NVTA1EURINVITAE CORP | 1,200,000 | $19.4B | 0.61% | |
| 65 | IM8NINSMED INC | 800,000 | $19.1B | 0.60% | |
| 66 | —FORTY SEVEN INC | 450,000 | $17.7B | 0.56% | |
| 67 | TBPHTHERAVANCE BIOPHARMA INC | 655,200 | $17.0B | 0.54% | |
| 68 | ADPTADAPTIVE BIOTECHNOLOGIES COR | 545,000 | $16.3B | 0.52% | |
| 69 | CICIGNA CORP NEW | 75,000 | $15.3B | 0.48% | |
| 70 | HQYHEALTHEQUITY INC | 205,000 | $15.2B | 0.48% | |
| 71 | OSWONESPAWORLD HOLDINGS LIMITED | 900,000 | $15.2B | 0.48% | |
| 72 | PHRPHREESIA INC | 565,000 | $15.1B | 0.48% | |
| 73 | GHGUARDANT HEALTH INC | 190,000 | $14.8B | 0.47% | |
| 74 | NVCRNOVOCURE LTD | 172,500 | $14.5B | 0.46% | |
| 75 | CNCCENTENE CORP DEL | 229,800 | $14.4B | 0.46% | |
| 76 | —ODONATE THERAPEUTICS INC | 430,000 | $14.0B | 0.44% | |
| 77 | KRTXKARUNA THERAPEUTICS INC | 180,000 | $13.6B | 0.43% | |
| 78 | FGENEURFIBROGEN INC | 306,000 | $13.1B | 0.41% | |
| 79 | —ZOGENIX INC | 250,000 | $13.0B | 0.41% | |
| 80 | RIGLUSDRIGEL PHARMACEUTICALS INC | 5,497,900 | $11.8B | 0.37% | |
| 81 | —MYOKARDIA INC | 160,000 | $11.7B | 0.37% | |
| 82 | —CONSTELLATION PHARMCETICLS I | 233,500 | $11.0B | 0.35% | |
| 83 | —BIOHAVEN PHARMACTL HLDG CO L | 200,000 | $10.9B | 0.34% | |
| 84 | ARVNARVINAS INC | 250,000 | $10.3B | 0.32% | |
| 85 | —DERMIRA INC | 650,000 | $9.9B | 0.31% | |
| 86 | AM6AMICUS THERAPEUTICS INC | 1,000,000 | $9.7B | 0.31% | |
| 87 | BMYBRISTOL MYERS SQUIBB CO | 150,000 | $9.6B | 0.30% | |
| 88 | DVAXDYNAVAX TECHNOLOGIES CORP | 1,575,000 | $9.0B | 0.28% | |
| 89 | FIXXEURHOMOLOGY MEDICINES INC | 425,000 | $8.8B | 0.28% | |
| 90 | —MEDICINES CO | 5,000,000 | $8.7B | 0.28% | |
| 91 | —RETROPHIN INC | 575,000 | $8.2B | 0.26% | |
| 92 | RYTMRHYTHM PHARMACEUTICALS INC | 345,000 | $7.9B | 0.25% | |
| 93 | —MOMENTA PHARMACEUTICALS INC | 400,000 | $7.9B | 0.25% | |
| 94 | —MYOVANT SCIENCES LTD | 500,000 | $7.8B | 0.25% | |
| 95 | —TRANSLATE BIO INC | 950,000 | $7.7B | 0.24% | |
| 96 | —MERSANA THERAPEUTICS INC | 1,233,000 | $7.1B | 0.22% | |
| 97 | —PHASEBIO PHARMACEUTICALS INC | 1,125,000 | $6.9B | 0.22% | |
| 98 | ICPTUSDINTERCEPT PHARMACEUTICALS IN | 54,400 | $6.7B | 0.21% | |
| 99 | GRTXGALERA THERAPEUTICS INC | 500,000 | $6.6B | 0.21% | |
| 100 | CGENCOMPUGEN LTD | 1,100,000 | $6.6B | 0.21% |
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