Rock Springs Capital Management LP Q4 2021 Filing
Filed February 14, 2022
Portfolio Value
$4.3T
Holdings
136
Report Date
Q4 2021
Filing Type
13F-HR
All Holdings (136 positions)
| # | Stock | Shares | Value | % Portfolio | Type |
|---|---|---|---|---|---|
| 1 | AGLAGILON HEALTH INC | 7,495,000 | $202.4B | 4.68% | |
| 2 | HUMHUMANA INC | 349,000 | $161.9B | 3.74% | |
| 3 | AFWALIGN TECHNOLOGY INC | 200,000 | $131.4B | 3.04% | |
| 4 | ISRGINTUITIVE SURGICAL INC | 360,000 | $129.3B | 2.99% | |
| 5 | PODDINSULET CORP | 463,750 | $123.4B | 2.85% | |
| 6 | UNHUNITEDHEALTH GROUP INC | 240,000 | $120.5B | 2.78% | |
| 7 | IDXXIDEXX LABS INC | 180,000 | $118.5B | 2.74% | |
| 8 | HCAHCA HEALTHCARE INC | 450,000 | $115.6B | 2.67% | |
| 9 | ARGXARGENX SE | 315,000 | $110.3B | 2.55% | |
| 10 | NBIXNEUROCRINE BIOSCIENCES INC | 1,105,000 | $94.1B | 2.17% | |
| 11 | 2L9BLUEPRINT MEDICINES CORP | 859,755 | $92.1B | 2.13% | |
| 12 | AGIOAGIOS PHARMACEUTICALS INC | 2,646,625 | $87.0B | 2.01% | |
| 13 | IMCRIMMUNOCORE HLDGS PLC | 2,471,555 | $84.6B | 1.96% | |
| 14 | HZNPHORIZON THERAPEUTICS PUB L | 746,000 | $80.4B | 1.86% | |
| 15 | EWEDWARDS LIFESCIENCES CORP | 582,000 | $75.4B | 1.74% | |
| 16 | RAREULTRAGENYX PHARMACEUTICAL IN | 883,921 | $74.3B | 1.72% | |
| 17 | ZLABZAI LAB LTD | 1,180,700 | $74.2B | 1.71% | |
| 18 | BAXBAXTER INTL INC | 733,803 | $63.0B | 1.46% | |
| 19 | NVV1NOVAVAX INC | 425,000 | $60.8B | 1.40% | |
| 20 | MRTXEURMIRATI THERAPEUTICS INC | 410,415 | $60.2B | 1.39% | |
| 21 | PCRXPACIRA BIOSCIENCES INC | 1,000,000 | $60.2B | 1.39% | |
| 22 | NVROEURNEVRO CORP | 714,000 | $57.9B | 1.34% | |
| 23 | EVHEVOLENT HEALTH INC | 2,038,000 | $56.4B | 1.30% | |
| 24 | ALNYALNYLAM PHARMACEUTICALS INC | 332,500 | $56.4B | 1.30% | |
| 25 | ACRSACLARIS THERAPEUTICS INC | 3,861,347 | $56.1B | 1.30% | |
| 26 | KRTXKARUNA THERAPEUTICS INC | 426,843 | $55.9B | 1.29% | |
| 27 | FRPTFRESHPET INC | 580,000 | $55.3B | 1.28% | |
| 28 | ASNDASCENDIS PHARMA A/S | 400,000 | $53.8B | 1.24% | |
| 29 | CERE1EURCEREVEL THERAPEUTICS HLDNG I | 1,648,435 | $53.4B | 1.23% | |
| 30 | IRTCIRHYTHM TECHNOLOGIES INC | 433,000 | $51.0B | 1.18% | |
| 31 | KYMRKYMERA THERAPEUTICS INC | 742,065 | $47.1B | 1.09% | |
| 32 | ACHCACADIA HEALTHCARE COMPANY IN | 748,500 | $45.4B | 1.05% | |
| 33 | EXASEXACT SCIENCES CORP | 570,000 | $44.4B | 1.02% | |
| 34 | NVTA1EURINVITAE CORP | 2,800,243 | $42.8B | 0.99% | |
| 35 | PENPENUMBRA INC | 148,500 | $42.7B | 0.99% | |
| 36 | SWAVUSDSHOCKWAVE MED INC | 222,500 | $39.7B | 0.92% | |
| 37 | SGENUSDSEAGEN INC | 256,000 | $39.6B | 0.91% | |
| 38 | SRPTSAREPTA THERAPEUTICS INC | 424,000 | $38.2B | 0.88% | |
| 39 | ARVNARVINAS INC | 457,200 | $37.6B | 0.87% | |
| 40 | CYTK 4 11/15/26CYTOKINETICS INC | 8,000,000 | $35.7B | 0.82% | |
| 41 | WRBYWARBY PARKER INC | 724,000 | $33.7B | 0.78% | |
| 42 | HCATHEALTH CATALYST INC | 850,200 | $33.7B | 0.78% | |
| 43 | VERVVERVE THERAPEUTICS INC | 902,926 | $33.3B | 0.77% | |
| 44 | CVETUSDCOVETRUS INC | 1,661,700 | $33.2B | 0.77% | |
| 45 | EHCENCOMPASS HEALTH CORP | 502,500 | $32.8B | 0.76% | |
| 46 | PHRPHREESIA INC | 770,000 | $32.1B | 0.74% | |
| 47 | PRTAPROTHENA CORP PLC | 647,730 | $32.0B | 0.74% | |
| 48 | ACCDEURACCOLADE INC | 1,197,000 | $31.6B | 0.73% | |
| 49 | DC4DEXCOM INC | 56,750 | $30.5B | 0.70% | |
| 50 | TVTXTRAVERE THERAPEUTICS INC | 951,650 | $29.5B | 0.68% | |
| 51 | —ABCAM PLC | 1,252,500 | $29.5B | 0.68% | |
| 52 | CNMDCONMED CORP | 202,500 | $28.7B | 0.66% | |
| 53 | GRPHGRAPHITE BIO INC | 2,078,910 | $25.8B | 0.60% | |
| 54 | —SIERRA ONCOLOGY INC | 1,184,793 | $25.8B | 0.60% | |
| 55 | —INTERSECT ENT INC | 940,000 | $25.7B | 0.59% | |
| 56 | MIRMMIRUM PHARMACEUTICALS INC | 1,538,814 | $24.5B | 0.57% | |
| 57 | —PROMETHEUS BIOSCIENCES INC | 618,407 | $24.5B | 0.56% | |
| 58 | XENEXENON PHARMACEUTICALS INC | 771,367 | $24.1B | 0.56% | |
| 59 | BMRNBIOMARIN PHARMACEUTICAL INC | 264,000 | $23.3B | 0.54% | |
| 60 | MDGLMADRIGAL PHARMACEUTICALS INC | 269,400 | $22.8B | 0.53% | |
| 61 | LUNGPULMONX CORP | 700,000 | $22.4B | 0.52% | |
| 62 | DVAXDYNAVAX TECHNOLOGIES CORP | 1,576,894 | $22.2B | 0.51% | |
| 63 | WSTWEST PHARMACEUTICAL SVSC INC | 45,500 | $21.3B | 0.49% | |
| 64 | —MERSANA THERAPEUTICS INC | 3,248,950 | $20.2B | 0.47% | |
| 65 | GHGUARDANT HEALTH INC | 200,000 | $20.0B | 0.46% | |
| 66 | XLOXILIO THERAPEUTICS INC | 1,191,094 | $19.1B | 0.44% | |
| 67 | LFSTLIFESTANCE HEALTH GROUP INC | 2,000,000 | $19.0B | 0.44% | |
| 68 | LEGNLEGEND BIOTECH CORP | 403,584 | $18.8B | 0.43% | |
| 69 | ANABANAPTYSBIO INC | 538,700 | $18.7B | 0.43% | |
| 70 | RLAYRELAY THERAPEUTICS INC | 597,767 | $18.4B | 0.42% | |
| 71 | IMRXIMMUNEERING CORP | 1,089,816 | $17.6B | 0.41% | |
| 72 | AURAAURA BIOSCIENCES INC | 1,008,114 | $17.1B | 0.40% | |
| 73 | CMPXCOMPASS THERAPEUTICS INC | 5,328,088 | $16.9B | 0.39% | |
| 74 | —ICOSAVAX INC | 735,504 | $16.8B | 0.39% | |
| 75 | SPROSPERO THERAPEUTICS INC | 945,313 | $15.1B | 0.35% | |
| 76 | GOSS 5 06/01/27GOSSAMER BIO INC | 15,373,000 | $15.1B | 0.35% | |
| 77 | AMRNAMARIN CORP PLC | 4,419,700 | $14.9B | 0.34% | |
| 78 | —AMRYT PHARMA PLC | 1,305,825 | $14.1B | 0.33% | |
| 79 | MGNXMACROGENICS INC | 857,205 | $13.8B | 0.32% | |
| 80 | COLLCOLLEGIUM PHARMACEUTICAL INC | 725,000 | $13.5B | 0.31% | |
| 81 | NVCRNOVOCURE LTD | 175,000 | $13.1B | 0.30% | |
| 82 | WHWKAADI BIOSCIENCE INC | 538,835 | $13.0B | 0.30% | |
| 83 | RIGLUSDRIGEL PHARMACEUTICALS INC | 4,860,200 | $12.9B | 0.30% | |
| 84 | AKROAKERO THERAPEUTICS INC | 587,101 | $12.4B | 0.29% | |
| 85 | 290ACHINOOK THERAPEUTICS INC | 720,349 | $11.7B | 0.27% | |
| 86 | AM6AMICUS THERAPEUTICS INC | 1,012,506 | $11.7B | 0.27% | |
| 87 | LPTXEURLEAP THERAPEUTICS INC | 3,520,570 | $11.4B | 0.26% | |
| 88 | ABOSACUMEN PHARMACEUTICALS INC | 1,571,918 | $10.6B | 0.25% | |
| 89 | AUPHAURINIA PHARMACEUTICALS INC | 457,173 | $10.5B | 0.24% | |
| 90 | CGEMCULLINAN ONCOLOGY INC | 646,078 | $10.0B | 0.23% | |
| 91 | —ORION ACQUISITION CORP | 1,000,000 | $9.8B | 0.23% | |
| 92 | OKURRENEO PHARMACEUTICALS INC | 1,143,185 | $9.8B | 0.23% | |
| 93 | —EPIZYME INC | 3,807,662 | $9.5B | 0.22% | |
| 94 | —OLINK HLDG AB | 515,000 | $9.4B | 0.22% | |
| 95 | NRIXNURIX THERAPEUTICS INC | 321,050 | $9.3B | 0.21% | |
| 96 | MREOMEREO BIOPHARMA GROUP PLC | 5,585,621 | $8.9B | 0.21% | |
| 97 | BMEABIOMEA FUSION INC | 1,165,582 | $8.7B | 0.20% | |
| 98 | ADAPYADAPTIMMUNE THERAPEUTICS PLC | 2,215,588 | $8.3B | 0.19% | |
| 99 | —VINCERX PHARMA INC | 809,195 | $8.2B | 0.19% | |
| 100 | FULCFULCRUM THERAPEUTICS INC | 456,990 | $8.1B | 0.19% |
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