Rock Springs Capital Management LP Q3 2020 Filing
Filed November 16, 2020
Portfolio Value
$3.9T
Holdings
148
Report Date
Q3 2020
Filing Type
13F-HR
All Holdings (148 positions)
| # | Stock | Shares | Value | % Portfolio | Type |
|---|---|---|---|---|---|
| 1 | IRTCIRHYTHM TECHNOLOGIES INC | 625,000 | $148.8B | 3.78% | |
| 2 | NBIXNEUROCRINE BIOSCIENCES INC | 1,465,500 | $140.9B | 3.58% | |
| 3 | —IMMUNOMEDICS INC | 1,587,500 | $135.0B | 3.42% | |
| 4 | UNHUNITEDHEALTH GROUP INC | 405,000 | $126.3B | 3.20% | |
| 5 | HUMHUMANA INC | 242,500 | $100.4B | 2.55% | |
| 6 | 2L9BLUEPRINT MEDICINES CORP | 952,773 | $88.3B | 2.24% | |
| 7 | ISRGINTUITIVE SURGICAL INC | 120,000 | $85.1B | 2.16% | |
| 8 | CNCCENTENE CORP DEL | 1,320,000 | $77.0B | 1.95% | |
| 9 | ARGXARGENX SE | 287,500 | $75.5B | 1.92% | |
| 10 | PODDINSULET CORP | 315,500 | $74.6B | 1.89% | |
| 11 | ZLABZAI LAB LTD | 823,527 | $68.5B | 1.74% | |
| 12 | NVTA1EURINVITAE CORP | 1,517,962 | $65.8B | 1.67% | |
| 13 | ACADACADIA PHARMACEUTICALS INC | 1,573,200 | $64.9B | 1.65% | |
| 14 | NVV1NOVAVAX INC | 585,705 | $63.5B | 1.61% | |
| 15 | HCAHCA HEALTHCARE INC | 500,000 | $62.3B | 1.58% | |
| 16 | ONCBEIGENE LTD | 215,000 | $61.6B | 1.56% | |
| 17 | PCRXPACIRA BIOSCIENCES | 1,005,000 | $60.4B | 1.53% | |
| 18 | MRTXEURMIRATI THERAPEUTICS INC | 348,761 | $57.9B | 1.47% | |
| 19 | FRPTFRESHPET INC | 506,500 | $56.6B | 1.43% | |
| 20 | AGIOAGIOS PHARMACEUTICALS INC | 1,581,509 | $55.4B | 1.40% | |
| 21 | NVROEURNEVRO CORP | 386,000 | $53.8B | 1.36% | |
| 22 | BAXBAXTER INTL INC | 645,000 | $51.9B | 1.32% | |
| 23 | HZNPHORIZON THERAPEUTICS PUB L | 650,000 | $50.5B | 1.28% | |
| 24 | ALNYALNYLAM PHARMACEUTICALS INC | 339,814 | $49.5B | 1.26% | |
| 25 | IDXXIDEXX LABS INC | 125,000 | $49.1B | 1.25% | |
| 26 | BIIBBIOGEN INC | 172,500 | $48.9B | 1.24% | |
| 27 | SGENEURSEATTLE GENETICS INC | 250,000 | $48.9B | 1.24% | |
| 28 | SRPTSAREPTA THERAPEUTICS INC | 345,500 | $48.5B | 1.23% | |
| 29 | RAREULTRAGENYX PHARMACEUTICAL IN | 576,841 | $47.4B | 1.20% | |
| 30 | AFWALIGN TECHNOLOGY INC | 143,000 | $46.8B | 1.19% | |
| 31 | EWEDWARDS LIFESCIENCES CORP | 582,000 | $46.5B | 1.18% | |
| 32 | EHCENCOMPASS HEALTH CORP | 698,000 | $45.4B | 1.15% | |
| 33 | TFXTELEFLEX INCORPORATED | 130,000 | $44.3B | 1.12% | |
| 34 | EXASEXACT SCIENCES CORP | 424,000 | $43.2B | 1.10% | |
| 35 | BSXBOSTON SCIENTIFIC CORP | 1,100,000 | $42.0B | 1.07% | |
| 36 | ASNDASCENDIS PHARMA A/S | 233,500 | $36.0B | 0.91% | |
| 37 | —MERSANA THERAPEUTICS INC | 1,885,428 | $35.1B | 0.89% | |
| 38 | PENPENUMBRA INC | 159,000 | $30.9B | 0.78% | |
| 39 | ADPTADAPTIVE BIOTECHNOLOGIES COR | 635,000 | $30.9B | 0.78% | |
| 40 | CHRSCOHERUS BIOSCIENCES INC | 1,665,449 | $30.5B | 0.77% | |
| 41 | INSPINSPIRE MED SYS INC | 236,000 | $30.5B | 0.77% | |
| 42 | —EPIZYME INC | 2,551,659 | $30.4B | 0.77% | |
| 43 | MDGLMADRIGAL PHARMACEUTICALS INC | 254,268 | $30.2B | 0.77% | |
| 44 | CVETUSDCOVETRUS INC | 1,225,000 | $29.9B | 0.76% | |
| 45 | INCYINCYTE CORP | 300,000 | $26.9B | 0.68% | |
| 46 | ARDXARDELYX INC | 5,076,867 | $26.7B | 0.68% | |
| 47 | BMRNBIOMARIN PHARMACEUTICAL INC | 350,000 | $26.6B | 0.68% | |
| 48 | IMVTIMMUNOVANT INC | 742,449 | $26.1B | 0.66% | |
| 49 | ALXNALEXION PHARMACEUTICALS INC | 225,000 | $25.7B | 0.65% | |
| 50 | HCATHEALTH CATALYST INC | 703,000 | $25.7B | 0.65% | |
| 51 | PHRPHREESIA INC | 800,000 | $25.7B | 0.65% | |
| 52 | MIRMMIRUM PHARMACEUTICALS INC | 1,327,614 | $25.6B | 0.65% | |
| 53 | BFAMBRIGHT HORIZONS FAM SOL IN D | 165,500 | $25.2B | 0.64% | |
| 54 | GLPGGALAPAGOS NV | 175,000 | $24.8B | 0.63% | |
| 55 | COLLCOLLEGIUM PHARMACEUTICAL INC | 1,175,000 | $24.5B | 0.62% | |
| 56 | ASMBASSEMBLY BIOSCIENCES INC | 1,463,915 | $24.1B | 0.61% | |
| 57 | INZYINOZYME PHARMA INC | 879,954 | $23.1B | 0.59% | |
| 58 | KYMRKYMERA THERAPEUTICS INC | 709,965 | $22.9B | 0.58% | |
| 59 | ACHCACADIA HEALTHCARE COMPANY IN | 760,000 | $22.4B | 0.57% | |
| 60 | GHGUARDANT HEALTH INC | 190,000 | $21.2B | 0.54% | |
| 61 | —MOMENTA PHARMACEUTICALS INC | 400,000 | $21.0B | 0.53% | |
| 62 | APLTAPPLIED THERAPEUTICS INC | 991,573 | $20.6B | 0.52% | |
| 63 | RPRXROYALTY PHARMA PLC | 485,000 | $20.4B | 0.52% | |
| 64 | —ATHIRA PHARMA INC | 1,102,702 | $20.4B | 0.52% | |
| 65 | ALLKGUSDALLAKOS INC | 241,582 | $19.7B | 0.50% | |
| 66 | NVCRNOVOCURE LTD | 175,000 | $19.5B | 0.49% | |
| 67 | —PPD INC | 525,000 | $19.4B | 0.49% | |
| 68 | —RETROPHIN INC | 1,024,261 | $18.9B | 0.48% | |
| 69 | KRTXKARUNA THERAPEUTICS INC | 244,106 | $18.9B | 0.48% | |
| 70 | HQYHEALTHEQUITY INC | 360,100 | $18.5B | 0.47% | |
| 71 | CGENCOMPUGEN LTD | 1,132,775 | $18.4B | 0.47% | |
| 72 | AMRNAMARIN CORP PLC | 4,350,000 | $18.3B | 0.46% | |
| 73 | TGTXTG THERAPEUTICS INC | 682,926 | $18.3B | 0.46% | |
| 74 | CYTK 4 11/15/26CYTOKINETICS INC | 8,000,000 | $17.8B | 0.45% | |
| 75 | RLAYRELAY THERAPEUTICS INC | 413,674 | $17.6B | 0.45% | |
| 76 | SWAVUSDSHOCKWAVE MED INC | 220,000 | $16.7B | 0.42% | |
| 77 | NKTXNKARTA INC | 540,873 | $16.3B | 0.41% | |
| 78 | GOSS 5 06/01/27GOSSAMER BIO INC | 15,573,000 | $16.0B | 0.41% | |
| 79 | OSH3EUROAK STR HEALTH INC | 300,000 | $16.0B | 0.41% | |
| 80 | ADAPYADAPTIMMUNE THERAPEUTICS PLC | 1,986,910 | $15.9B | 0.40% | |
| 81 | QUREUNIQURE NV | 413,433 | $15.2B | 0.39% | |
| 82 | AM6AMICUS THERAPEUTICS INC | 1,023,821 | $14.5B | 0.37% | |
| 83 | CNMDCONMED CORP | 180,000 | $14.2B | 0.36% | |
| 84 | SPROSPERO THERAPEUTICS INC | 1,236,256 | $13.8B | 0.35% | |
| 85 | AKROAKERO THERAPEUTICS INC | 423,040 | $13.0B | 0.33% | |
| 86 | FGENEURFIBROGEN INC | 309,287 | $12.7B | 0.32% | |
| 87 | ACCDEURACCOLADE INC | 325,000 | $12.6B | 0.32% | |
| 88 | APREAPREA THERAPEUTICS INC | 518,290 | $12.5B | 0.32% | |
| 89 | TBPHTHERAVANCE BIOPHARMA INC | 824,018 | $12.2B | 0.31% | |
| 90 | —GW PHARMACEUTICALS PLC | 119,188 | $11.6B | 0.29% | |
| 91 | —FUSION PHARMACEUTICALS INC | 947,541 | $11.4B | 0.29% | |
| 92 | RIGLUSDRIGEL PHARMACEUTICALS INC | 4,742,891 | $11.4B | 0.29% | |
| 93 | AUPHAURINIA PHARMACEUTICALS INC | 772,569 | $11.4B | 0.29% | |
| 94 | ARVNARVINAS INC | 481,468 | $11.4B | 0.29% | |
| 95 | OSWONESPAWORLD HOLDINGS LIMITED | 1,740,000 | $11.3B | 0.29% | |
| 96 | AGLEUSDAEGLEA BIOTHERAPEUTICS INC | 1,590,528 | $11.3B | 0.29% | |
| 97 | TREURTRILLIUM THERAPEUTICS INC | 770,918 | $11.0B | 0.28% | |
| 98 | PRLDPRELUDE THERAPEUTICS INC | 360,263 | $10.9B | 0.28% | |
| 99 | TARAPROTARA THERAPEUTICS INC | 643,622 | $10.8B | 0.27% | |
| 100 | —CONSTELLATION PHARMCETICLS I | 515,680 | $10.4B | 0.27% |
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