13F HOLDINGS REPORT
Rock Springs Capital Management LP
Quarter ended Q1 2023 · Filed February 14, 2023 · Accession 0001172661-23-000999
Total Value
$4.16B
Positions
120
Other Managers
0
Confidential Omitted
No
Holdings (120)
| # | Issuer | Ticker / CUSIP | Shares | Value | % of Filing |
|---|---|---|---|---|---|
| 1 | HUMANA INC | HUM | 426,500 | $218.4M | 5.26% |
| 2 | IMMUNOCORE HLDGS PLC | IMCR | 3,321,066 | $189.5M | 4.56% |
| 3 | INSULET CORP | PODD | 524,250 | $154.3M | 3.71% |
| 4 | UNITEDHEALTH GROUP INC | UNH | 270,000 | $143.1M | 3.44% |
| 5 | NEUROCRINE BIOSCIENCES INC | NBIX | 1,122,500 | $134.1M | 3.23% |
| 6 | ARGENX SE | ARGX | 350,000 | $132.6M | 3.19% |
| 7 | AGILON HEALTH INC | AGL | 7,872,500 | $127.1M | 3.06% |
| 8 | PROMETHEUS BIOSCIENCES INC | 74349U108 | 1,031,550 | $113.5M | 2.73% |
| 9 | PENUMBRA INC | PEN | 508,250 | $113.1M | 2.72% |
| 10 | EVOLENT HEALTH INC | EVH | 3,803,500 | $106.8M | 2.57% |
| 11 | MADRIGAL PHARMACEUTICALS INC | MDGL | 348,121 | $101.0M | 2.43% |
| 12 | IDEXX LABS INC | 45168D104 | 207,500 | $84.7M | 2.04% |
| 13 | HORIZON THERAPEUTICS PUB L | G46188101 | 739,700 | $84.2M | 2.03% |
| 14 | AGIOS PHARMACEUTICALS INC | AGIO | 2,996,592 | $84.1M | 2.02% |
| 15 | BLUEPRINT MEDICINES CORP | 09627Y109 | 1,891,510 | $82.9M | 1.99% |
| 16 | KARUNA THERAPEUTICS INC | 48576A100 | 413,762 | $81.3M | 1.96% |
| 17 | INTUITIVE SURGICAL INC | ISRG | 298,500 | $79.2M | 1.91% |
| 18 | CEREVEL THERAPEUTICS HLDNG I | 15678U128 | 2,506,464 | $79.1M | 1.90% |
| 19 | ALNYLAM PHARMACEUTICALS INC | ALNY | 332,500 | $79.0M | 1.90% |
| 20 | AKERO THERAPEUTICS INC | 00973Y108 | 1,400,654 | $76.8M | 1.85% |
| 21 | ACADIA HEALTHCARE COMPANY IN | ACHC | 845,500 | $69.6M | 1.67% |
| 22 | ALIGN TECHNOLOGY INC | ALGN | 302,350 | $63.8M | 1.53% |
| 23 | ACLARIS THERAPEUTICS INC | ACRS | 3,961,249 | $62.4M | 1.50% |
| 24 | ULTRAGENYX PHARMACEUTICAL IN | RARE | 1,290,279 | $59.8M | 1.44% |
| 25 | BAXTER INTL INC | 071813109 | 1,150,000 | $58.6M | 1.41% |
| 26 | SAREPTA THERAPEUTICS INC | SRPT | 436,000 | $56.5M | 1.36% |
| 27 | DEXCOM INC | DXCM | 490,500 | $55.5M | 1.34% |
| 28 | ASCENDIS PHARMA A/S | ASND | 425,500 | $52.0M | 1.25% |
| 29 | SEAGEN INC | SE | 400,200 | $51.4M | 1.24% |
| 30 | RHYTHM PHARMACEUTICALS INC | RYTM | 1,760,865 | $51.3M | 1.23% |
| 31 | EDWARDS LIFESCIENCES CORP | EW | 645,900 | $48.2M | 1.16% |
| 32 | XENON PHARMACEUTICALS INC | XENE | 1,175,672 | $46.4M | 1.12% |
| 33 | AMYLYX PHARMACEUTICALS INC | AMLX | 1,229,637 | $45.4M | 1.09% |
| 34 | PROTHENA CORP PLC | PRTA | 753,462 | $45.4M | 1.09% |
| 35 | EXACT SCIENCES CORP | 30063P105 | 887,500 | $43.9M | 1.06% |
| 36 | WEST PHARMACEUTICAL SVSC INC | 955306105 | 185,500 | $43.7M | 1.05% |
| 37 | NEVRO CORP | 64157F103 | 1,077,900 | $42.7M | 1.03% |
| 38 | PHREESIA INC | PHR | 1,302,500 | $42.1M | 1.01% |
| 39 | PACIRA BIOSCIENCES INC | PCRX | 1,032,600 | $39.9M | 0.96% |
| 40 | OLINK HLDG AB | OLN | 1,445,000 | $36.7M | 0.88% |
| 41 | MIRATI THERAPEUTICS INC | 60468T105 | 805,024 | $36.5M | 0.88% |
| 42 | MIRUM PHARMACEUTICALS INC | MIRM | 1,795,733 | $35.0M | 0.84% |
| 43 | FRESHPET INC | FRPT | 657,000 | $34.7M | 0.83% |
| 44 | ABCAM PLC | 000380204 | 2,180,000 | $33.9M | 0.82% |
| 45 | ZAI LAB LTD | ZLAB | 1,059,700 | $32.5M | 0.78% |
| 46 | KYMERA THERAPEUTICS INC | KYMR | 1,227,779 | $30.6M | 0.74% |
| 47 | IRHYTHM TECHNOLOGIES INC | IRTC | 309,450 | $29.0M | 0.70% |
| 48 | BIOMARIN PHARMACEUTICAL INC | BMRN | 264,500 | $27.4M | 0.66% |
| 49 | SELECT SECTOR SPDR TR | 81369Y209 | 200,000 | $27.2M | 0.65% |
| 50 | COMPASS THERAPEUTICS INC | CMPX | 5,333,188 | $26.8M | 0.65% |
| 51 | MERSANA THERAPEUTICS INC | 59045L106 | 4,103,803 | $24.0M | 0.58% |
| 52 | SHOCKWAVE MED INC | 82489T104 | 115,100 | $23.7M | 0.57% |
| 53 | LEGEND BIOTECH CORP | LEGN | 450,466 | $22.5M | 0.54% |
| 54 | BIOCRYST PHARMACEUTICALS INC | BCRX | 1,890,737 | $21.7M | 0.52% |
| 55 | AZENTA INC | AZTA | 351,500 | $20.5M | 0.49% |
| 56 | CYTOKINETICS INC | CYTK | 443,000 | $20.3M | 0.49% |
| 57 | TRAVERE THERAPEUTICS INC | TVTX | 951,650 | $20.0M | 0.48% |
| 58 | IMMATICS N.V | IMTX | 2,274,784 | $19.8M | 0.48% |
| 59 | DYNAVAX TECHNOLOGIES CORP | 268158201 | 1,813,758 | $19.3M | 0.46% |
| 60 | CELLDEX THERAPEUTICS INC NEW | CLDX | 421,504 | $18.8M | 0.45% |
| 61 | CONMED CORP | CNMD | 205,000 | $18.2M | 0.44% |
| 62 | ANAPTYSBIO INC | ANABV | 576,600 | $17.9M | 0.43% |
| 63 | COLLEGIUM PHARMACEUTICAL INC | COLL | 725,000 | $16.8M | 0.40% |
| 64 | WARBY PARKER INC | WRBY | 1,218,975 | $16.4M | 0.40% |
| 65 | ACCOLADE INC | 00437E102 | 1,938,000 | $15.1M | 0.36% |
| 66 | CINCOR PHARMA INC | 17240Y109 | 1,116,578 | $13.7M | 0.33% |
| 67 | LIFESTANCE HEALTH GROUP INC | LFST | 2,700,000 | $13.3M | 0.32% |
| 68 | CHINOOK THERAPEUTICS INC | 16961L106 | 507,512 | $13.3M | 0.32% |
| 69 | AMICUS THERAPEUTICS INC | FOLD | 1,063,806 | $13.0M | 0.31% |
| 70 | VERVE THERAPEUTICS INC | 92539P101 | 558,837 | $10.8M | 0.26% |
| 71 | AURA BIOSCIENCES INC | AURA | 1,019,757 | $10.7M | 0.26% |
| 72 | RELAY THERAPEUTICS INC | RLAY | 673,966 | $10.1M | 0.24% |
| 73 | HEALTH CATALYST INC | HCAT | 929,900 | $9.9M | 0.24% |
| 74 | EDAP TMS S A | EDAP | 910,000 | $9.7M | 0.23% |
| 75 | AMRYT PHARMA PLC | 03217L106 | 1,325,625 | $9.7M | 0.23% |
| 76 | BIOHAVEN LTD | BHVN | 668,913 | $9.3M | 0.22% |
| 77 | NOVOCURE LTD | NVCR | 125,000 | $9.2M | 0.22% |
| 78 | MACROGENICS INC | MGNX | 1,123,096 | $7.5M | 0.18% |
| 79 | DISC MEDICINE INC | IRON | 339,497 | $6.8M | 0.16% |
| 80 | ICOSAVAX INC | 45114M109 | 781,000 | $6.2M | 0.15% |
| 81 | BIOMEA FUSION INC | BMEA | 730,846 | $6.2M | 0.15% |
| 82 | VIGIL NEUROSCIENCE INC | 92673K108 | 471,958 | $5.9M | 0.14% |
| 83 | INVITAE CORP | 46185L103 | 3,097,525 | $5.8M | 0.14% |
| 84 | PULMONX CORP | LUNG | 652,400 | $5.5M | 0.13% |
| 85 | NOVAVAX INC | NVAX | 532,600 | $5.5M | 0.13% |
| 86 | GUARDANT HEALTH INC | GH | 200,000 | $5.4M | 0.13% |
| 87 | GAMIDA CELL LTD | M47364100 | 4,119,883 | $5.3M | 0.13% |
| 88 | F-STAR THERAPEUTICS INC | 30315R107 | 751,889 | $4.8M | 0.11% |
| 89 | DESIGN THERAPEUTICS INC | DSGN | 460,391 | $4.7M | 0.11% |
| 90 | MEREO BIOPHARMA GROUP PLC | MREO | 6,244,897 | $4.7M | 0.11% |
| 91 | KINNATE BIOPHARMA INC | 49705R105 | 746,973 | $4.6M | 0.11% |
| 92 | BEAM THERAPEUTICS INC | BEAM | 111,430 | $4.4M | 0.10% |
| 93 | ADAPTIMMUNE THERAPEUTICS PLC | ADTI | 2,676,536 | $3.9M | 0.09% |
| 94 | ALTIMMUNE INC | ALT | 223,255 | $3.7M | 0.09% |
| 95 | XILIO THERAPEUTICS INC | XLO | 1,362,878 | $3.7M | 0.09% |
| 96 | PARATEK PHARMACEUTICALS INC | 699374302 | 1,734,037 | $3.2M | 0.08% |
| 97 | INOZYME PHARMA INC | 45790W108 | 3,086,027 | $3.2M | 0.08% |
| 98 | GOSSAMER BIO INC | GOSS | 9,573,000 | $3.1M | 0.07% |
| 99 | TRAVERE THERAPEUTICS INC | TVTX | 3,250,000 | $3.0M | 0.07% |
| 100 | FULCRUM THERAPEUTICS INC | FULC | 384,590 | $2.8M | 0.07% |
| 101 | RENEO PHARMACEUTICALS INC | 75974E103 | 1,143,185 | $2.7M | 0.06% |
| 102 | NKARTA INC | NKTX | 393,389 | $2.4M | 0.06% |
| 103 | THESEUS PHARMACEUTICALS INC | 88369M101 | 437,329 | $2.2M | 0.05% |
| 104 | AURINIA PHARMACEUTICALS INC | AUPH | 479,540 | $2.1M | 0.05% |
| 105 | SPRUCE BIOSCIENCES INC | SPRB | 1,622,689 | $1.8M | 0.04% |
| 106 | LEAP THERAPEUTICS INC | 52187K101 | 3,659,847 | $1.6M | 0.04% |
| 107 | NEUROCRINE BIOSCIENCES INC | NBIX | 1,000,000 | $1.6M | 0.04% |
| 108 | AEGLEA BIOTHERAPEUTICS INC | 00773J103 | 3,413,906 | $1.5M | 0.04% |
| 109 | ESSA PHARMA INC | 29668H708 | 524,944 | $1.3M | 0.03% |
| 110 | SPERO THERAPEUTICS INC | SPRO | 669,533 | $1.2M | 0.03% |
| 111 | FATE THERAPEUTICS INC | FATE | 110,000 | $1.1M | 0.03% |
| 112 | TEMPEST THERAPEUTICS INC | TPST | 823,654 | $947,202 | 0.02% |
| 113 | COMPUGEN LTD | CGEN | 1,289,990 | $923,246 | 0.02% |
| 114 | VINCERX PHARMA INC | VNCE | 891,719 | $909,553 | 0.02% |
| 115 | GOSSAMER BIO INC | GOSS | 376,048 | $816,024 | 0.02% |
| 116 | ACELRX PHARMACEUTICALS INC | TLPH | 316,460 | $715,200 | 0.02% |
| 117 | NEVRO CORP | 64157FAC7 | 500,000 | $458,750 | 0.01% |
| 118 | APPLIED THERAPEUTICS INC | 03828A101 | 596,680 | $453,477 | 0.01% |
| 119 | ATRECA INC | 04965G109 | 362,530 | $290,242 | 0.01% |
| 120 | NUVATION BIO INC | NUVB | 134,028 | $19,367 | 0.00% |