Rock Springs Capital Management LP Q4 2023 Filing
Filed February 14, 2024
Portfolio Value
$4062.2T
Holdings
104
Report Date
Q4 2023
Filing Type
13F-HR
All Holdings (104 positions)
| # | Stock | Shares | Value | % Portfolio | Type |
|---|---|---|---|---|---|
| 1 | 2L9BLUEPRINT MEDICINES CORP | 2,881,567 | $265.8T | 6.54% | |
| 2 | IMCRIMMUNOCORE HLDGS PLC | 2,661,507 | $181.8T | 4.48% | |
| 3 | KRTXKARUNA THERAPEUTICS INC | 515,024 | $163.0T | 4.01% | |
| 4 | NBIXNEUROCRINE BIOSCIENCES INC | 1,196,000 | $157.6T | 3.88% | |
| 5 | HUMHUMANA INC | 310,000 | $141.9T | 3.49% | |
| 6 | PENPENUMBRA INC | 537,500 | $135.2T | 3.33% | |
| 7 | EVHEVOLENT HEALTH INC | 3,960,000 | $130.8T | 3.22% | |
| 8 | UNHUNITEDHEALTH GROUP INC | 230,000 | $121.1T | 2.98% | |
| 9 | CERE1EURCEREVEL THERAPEUTICS HLDNG I | 2,674,245 | $113.4T | 2.79% | |
| 10 | AGLAGILON HEALTH INC | 8,630,000 | $108.3T | 2.67% | |
| 11 | ISRGINTUITIVE SURGICAL INC | 298,500 | $100.7T | 2.48% | |
| 12 | IDXXIDEXX LABS INC | 179,250 | $99.5T | 2.45% | |
| 13 | PODDINSULET CORP | 431,750 | $93.7T | 2.31% | |
| 14 | ARGXARGENX SE | 229,250 | $87.2T | 2.15% | |
| 15 | RAREULTRAGENYX PHARMACEUTICAL IN | 1,754,038 | $83.9T | 2.06% | |
| 16 | ACHCACADIA HEALTHCARE COMPANY IN | 1,073,500 | $83.5T | 2.05% | |
| 17 | EXASEXACT SCIENCES CORP | 1,019,500 | $75.4T | 1.86% | |
| 18 | DC4DEXCOM INC | 596,000 | $74.0T | 1.82% | |
| 19 | BSXBOSTON SCIENTIFIC CORP | 1,232,500 | $71.3T | 1.75% | |
| 20 | RYTMRHYTHM PHARMACEUTICALS INC | 1,522,893 | $70.0T | 1.72% | |
| 21 | AFWALIGN TECHNOLOGY INC | 220,000 | $60.3T | 1.48% | |
| 22 | XENEXENON PHARMACEUTICALS INC | 1,255,577 | $57.8T | 1.42% | |
| 23 | FRPTFRESHPET INC | 662,500 | $57.5T | 1.41% | |
| 24 | MIRMMIRUM PHARMACEUTICALS INC | 1,851,464 | $54.7T | 1.35% | |
| 25 | PHRPHREESIA INC | 2,206,700 | $51.1T | 1.26% | |
| 26 | EWEDWARDS LIFESCIENCES CORP | 647,300 | $49.4T | 1.22% | |
| 27 | MRTXEURMIRATI THERAPEUTICS INC | 835,776 | $49.1T | 1.21% | |
| 28 | WSTWEST PHARMACEUTICAL SVSC INC | 137,250 | $48.3T | 1.19% | |
| 29 | AGIOAGIOS PHARMACEUTICALS INC | 2,152,173 | $47.9T | 1.18% | |
| 30 | MDGLMADRIGAL PHARMACEUTICALS INC | 198,169 | $45.9T | 1.13% | |
| 31 | ALNYALNYLAM PHARMACEUTICALS INC | 235,000 | $45.0T | 1.11% | |
| 32 | —OLINK HLDG AB | 1,676,500 | $42.2T | 1.04% | |
| 33 | ACCDEURACCOLADE INC | 3,485,000 | $41.9T | 1.03% | |
| 34 | IMVTIMMUNOVANT INC | 983,301 | $41.4T | 1.02% | |
| 35 | LLYELI LILLY & CO | 69,500 | $40.5T | 1.00% | |
| 36 | KYMRKYMERA THERAPEUTICS INC | 1,522,238 | $38.8T | 0.95% | |
| 37 | TCE2CELLDEX THERAPEUTICS INC NEW | 969,646 | $38.5T | 0.95% | |
| 38 | IRTCIRHYTHM TECHNOLOGIES INC | 350,750 | $37.5T | 0.92% | |
| 39 | ASNDASCENDIS PHARMA A/S | 290,000 | $36.5T | 0.90% | |
| 40 | PCRXPACIRA BIOSCIENCES INC | 1,055,500 | $35.6T | 0.88% | |
| 41 | LFSTLIFESTANCE HEALTH GROUP INC | 4,535,000 | $35.5T | 0.87% | |
| 42 | AZTAAZENTA INC | 507,500 | $33.1T | 0.81% | |
| 43 | SRPTSAREPTA THERAPEUTICS INC | 327,600 | $31.6T | 0.78% | |
| 44 | ZLABZAI LAB LTD | 1,137,023 | $31.1T | 0.76% | |
| 45 | LEGNLEGEND BIOTECH CORP | 492,444 | $29.6T | 0.73% | |
| 46 | WRBYWARBY PARKER INC | 2,028,300 | $28.6T | 0.70% | |
| 47 | AKROAKERO THERAPEUTICS INC | 1,081,064 | $25.2T | 0.62% | |
| 48 | TVTXTRAVERE THERAPEUTICS INC | 2,771,446 | $24.9T | 0.61% | |
| 49 | MRUSMERUS N V | 872,069 | $24.0T | 0.59% | |
| 50 | DVAXDYNAVAX TECHNOLOGIES CORP | 1,675,474 | $23.4T | 0.58% | |
| 51 | SWAVUSDSHOCKWAVE MED INC | 120,000 | $22.9T | 0.56% | |
| 52 | PRTAPROTHENA CORP PLC | 625,048 | $22.7T | 0.56% | |
| 53 | IMGNEURIMMUNOGEN INC | 759,365 | $22.5T | 0.55% | |
| 54 | NVROEURNEVRO CORP | 1,025,000 | $22.1T | 0.54% | |
| 55 | AMGNAMGEN INC | 74,500 | $21.5T | 0.53% | |
| 56 | IRONDISC MEDICINE INC | 363,468 | $21.0T | 0.52% | |
| 57 | RVMDREVOLUTION MEDICINES INC | 725,152 | $20.8T | 0.51% | |
| 58 | INSPINSPIRE MED SYS INC | 99,000 | $20.1T | 0.50% | |
| 59 | IMTXIMMATICS N.V | 1,875,466 | $19.7T | 0.49% | |
| 60 | BCRXBIOCRYST PHARMACEUTICALS INC | 3,270,381 | $19.6T | 0.48% | |
| 61 | MREOMEREO BIOPHARMA GROUP PLC | 7,983,851 | $18.4T | 0.45% | |
| 62 | COLLCOLLEGIUM PHARMACEUTICAL INC | 562,000 | $17.3T | 0.43% | |
| 63 | INZYINOZYME PHARMA INC | 3,681,174 | $15.7T | 0.39% | |
| 64 | AM6AMICUS THERAPEUTICS INC | 1,063,806 | $15.1T | 0.37% | |
| 65 | BMRNBIOMARIN PHARMACEUTICAL INC | 148,832 | $14.4T | 0.35% | |
| 66 | —ICOSAVAX INC | 868,409 | $13.7T | 0.34% | |
| 67 | KRYSKRYSTAL BIOTECH INC | 103,969 | $12.9T | 0.32% | |
| 68 | GPCRSTRUCTURE THERAPEUTICS INC | 286,676 | $11.7T | 0.29% | |
| 69 | INBXUSDINHIBRX INC | 301,400 | $11.5T | 0.28% | Call |
| 70 | MGNXMACROGENICS INC | 1,178,796 | $11.3T | 0.28% | |
| 71 | MLYSMINERALYS THERAPEUTICS INC | 1,167,492 | $10.0T | 0.25% | |
| 72 | ABOSACUMEN PHARMACEUTICALS INC | 2,300,059 | $8.8T | 0.22% | |
| 73 | CMPXCOMPASS THERAPEUTICS INC | 5,513,788 | $8.6T | 0.21% | |
| 74 | LUNGPULMONX CORP | 652,400 | $8.3T | 0.20% | |
| 75 | AMLXAMYLYX PHARMACEUTICALS INC | 535,012 | $7.9T | 0.19% | |
| 76 | SPRBSPRUCE BIOSCIENCES INC | 2,609,125 | $7.6T | 0.19% | |
| 77 | RLAYRELAY THERAPEUTICS INC | 673,966 | $7.4T | 0.18% | |
| 78 | EDAEDAP TMS S A | 1,386,425 | $7.3T | 0.18% | |
| 79 | —MERSANA THERAPEUTICS INC | 3,046,782 | $7.1T | 0.17% | |
| 80 | PLRXPLIANT THERAPEUTICS INC | 384,996 | $7.0T | 0.17% | |
| 81 | OSCROSCAR HEALTH INC | 735,000 | $6.7T | 0.17% | |
| 82 | FULCFULCRUM THERAPEUTICS INC | 727,673 | $4.9T | 0.12% | |
| 83 | EPIEURESSA PHARMA INC | 677,005 | $4.5T | 0.11% | |
| 84 | SGMTSAGIMET BIOSCIENCES INC | 738,355 | $4.0T | 0.10% | |
| 85 | AUPHAURINIA PHARMACEUTICALS INC | 412,570 | $3.7T | 0.09% | |
| 86 | GOSS 5 06/01/27GOSSAMER BIO INC | 9,573,000 | $3.5T | 0.09% | |
| 87 | CYPHLEAP THERAPEUTICS INC | 832,937 | $3.5T | 0.08% | |
| 88 | ACRSACLARIS THERAPEUTICS INC | 2,998,495 | $3.1T | 0.08% | |
| 89 | BEAMBEAM THERAPEUTICS INC | 111,430 | $3.0T | 0.07% | |
| 90 | APLTAPPLIED THERAPEUTICS INC | 895,195 | $3.0T | 0.07% | |
| 91 | GOSSGOSSAMER BIO INC | 3,266,960 | $3.0T | 0.07% | |
| 92 | TVTX 2.5 09/15/25TRAVERE THERAPEUTICS INC | 3,250,000 | $2.8T | 0.07% | |
| 93 | BMEABIOMEA FUSION INC | 181,147 | $2.6T | 0.06% | |
| 94 | NVV1NOVAVAX INC | 537,625 | $2.6T | 0.06% | |
| 95 | CGENCOMPUGEN LTD | 1,289,990 | $2.6T | 0.06% | |
| 96 | ADAPYADAPTIMMUNE THERAPEUTICS PLC | 2,425,468 | $1.9T | 0.05% | |
| 97 | NBIX 2.25 05/15/24NEUROCRINE BIOSCIENCES INC | 1,000,000 | $1.8T | 0.04% | |
| 98 | VIGLVIGIL NEUROSCIENCE INC | 471,958 | $1.6T | 0.04% | |
| 99 | OKURRENEO PHARMACEUTICALS INC | 751,730 | $1.2T | 0.03% | |
| 100 | —VINCERX PHARMA INC | 891,719 | $1.1T | 0.03% |
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