13F HOLDINGS REPORT
Rock Springs Capital Management LP
Quarter ended Q3 2023 · Filed August 14, 2023 · Accession 0001172661-23-003005
Total Value
$4.20B
Positions
123
Other Managers
0
Confidential Omitted
No
Holdings (123)
| # | Issuer | Ticker / CUSIP | Shares | Value | % of Filing |
|---|---|---|---|---|---|
| 1 | HUMANA INC | HUM | 470,000 | $210.2M | 5.00% |
| 2 | IMMUNOCORE HLDGS PLC | IMCR | 3,028,410 | $181.6M | 4.32% |
| 3 | INSULET CORP | PODD | 559,000 | $161.2M | 3.83% |
| 4 | AGILON HEALTH INC | AGL | 8,282,500 | $143.6M | 3.42% |
| 5 | BLUEPRINT MEDICINES CORP | 09627Y109 | 2,186,672 | $138.2M | 3.29% |
| 6 | ARGENX SE | ARGX | 350,000 | $136.4M | 3.25% |
| 7 | PENUMBRA INC | PEN | 366,000 | $125.9M | 3.00% |
| 8 | NEUROCRINE BIOSCIENCES INC | NBIX | 1,279,500 | $120.7M | 2.87% |
| 9 | EVOLENT HEALTH INC | EVH | 3,803,500 | $115.2M | 2.74% |
| 10 | UNITEDHEALTH GROUP INC | UNH | 230,000 | $110.5M | 2.63% |
| 11 | KARUNA THERAPEUTICS INC | 48576A100 | 493,527 | $107.0M | 2.55% |
| 12 | INTUITIVE SURGICAL INC | ISRG | 298,500 | $102.1M | 2.43% |
| 13 | IDEXX LABS INC | 45168D104 | 194,500 | $97.7M | 2.32% |
| 14 | EXACT SCIENCES CORP | 30063P105 | 943,500 | $88.6M | 2.11% |
| 15 | CEREVEL THERAPEUTICS HLDNG I | 15678U128 | 2,513,916 | $79.9M | 1.90% |
| 16 | WEST PHARMACEUTICAL SVSC INC | 955306105 | 202,000 | $77.3M | 1.84% |
| 17 | SEAGEN INC | SE | 400,200 | $77.0M | 1.83% |
| 18 | ALIGN TECHNOLOGY INC | ALGN | 217,000 | $76.7M | 1.83% |
| 19 | AGIOS PHARMACEUTICALS INC | AGIO | 2,686,167 | $76.1M | 1.81% |
| 20 | AKERO THERAPEUTICS INC | 00973Y108 | 1,550,754 | $72.4M | 1.72% |
| 21 | ACADIA HEALTHCARE COMPANY IN | ACHC | 908,000 | $72.3M | 1.72% |
| 22 | ALNYLAM PHARMACEUTICALS INC | ALNY | 345,000 | $65.5M | 1.56% |
| 23 | ULTRAGENYX PHARMACEUTICAL IN | RARE | 1,384,269 | $63.9M | 1.52% |
| 24 | DEXCOM INC | DXCM | 490,500 | $63.0M | 1.50% |
| 25 | EDWARDS LIFESCIENCES CORP | EW | 645,900 | $60.9M | 1.45% |
| 26 | ABCAM PLC | 000380204 | 2,405,000 | $58.9M | 1.40% |
| 27 | PROTHENA CORP PLC | PRTA | 753,462 | $51.4M | 1.22% |
| 28 | HORIZON THERAPEUTICS PUB L | G46188101 | 495,000 | $50.9M | 1.21% |
| 29 | SAREPTA THERAPEUTICS INC | SRPT | 425,000 | $48.7M | 1.16% |
| 30 | MIRUM PHARMACEUTICALS INC | MIRM | 1,820,733 | $47.1M | 1.12% |
| 31 | MADRIGAL PHARMACEUTICALS INC | MDGL | 199,218 | $46.0M | 1.09% |
| 32 | XENON PHARMACEUTICALS INC | XENE | 1,178,002 | $45.4M | 1.08% |
| 33 | FRESHPET INC | FRPT | 662,500 | $43.6M | 1.04% |
| 34 | PACIRA BIOSCIENCES INC | PCRX | 1,035,000 | $41.5M | 0.99% |
| 35 | ACLARIS THERAPEUTICS INC | ACRS | 3,961,849 | $41.1M | 0.98% |
| 36 | MIRATI THERAPEUTICS INC | 60468T105 | 1,121,647 | $40.5M | 0.96% |
| 37 | PHREESIA INC | PHR | 1,305,000 | $40.5M | 0.96% |
| 38 | ACCOLADE INC | 00437E102 | 2,820,000 | $38.0M | 0.90% |
| 39 | ASCENDIS PHARMA A/S | ASND | 425,500 | $38.0M | 0.90% |
| 40 | KYMERA THERAPEUTICS INC | KYMR | 1,487,551 | $34.2M | 0.81% |
| 41 | ZAI LAB LTD | ZLAB | 1,222,423 | $33.9M | 0.81% |
| 42 | AMYLYX PHARMACEUTICALS INC | AMLX | 1,544,616 | $33.3M | 0.79% |
| 43 | SHOCKWAVE MED INC | 82489T104 | 115,100 | $32.9M | 0.78% |
| 44 | IRHYTHM TECHNOLOGIES INC | IRTC | 309,450 | $32.3M | 0.77% |
| 45 | LEGEND BIOTECH CORP | LEGN | 458,265 | $31.6M | 0.75% |
| 46 | OLINK HLDG AB | OLN | 1,654,000 | $31.0M | 0.74% |
| 47 | NEVRO CORP | 64157F103 | 1,211,400 | $30.8M | 0.73% |
| 48 | IMMATICS N.V | IMTX | 2,536,144 | $29.3M | 0.70% |
| 49 | CONMED CORP | CNMD | 205,000 | $27.9M | 0.66% |
| 50 | SELECT SECTOR SPDR TR | 81369Y209 | 200,000 | $26.5M | 0.63% |
| 51 | LIFESTANCE HEALTH GROUP INC | LFST | 2,900,000 | $26.5M | 0.63% |
| 52 | RHYTHM PHARMACEUTICALS INC | RYTM | 1,597,123 | $26.3M | 0.63% |
| 53 | TRAVERE THERAPEUTICS INC | TVTX | 1,527,720 | $23.5M | 0.56% |
| 54 | DYNAVAX TECHNOLOGIES CORP | 268158201 | 1,813,758 | $23.4M | 0.56% |
| 55 | BIOMARIN PHARMACEUTICAL INC | BMRN | 264,500 | $22.9M | 0.55% |
| 56 | AZENTA INC | AZTA | 469,900 | $21.9M | 0.52% |
| 57 | MINERALYS THERAPEUTICS INC | MLYS | 1,167,492 | $19.9M | 0.47% |
| 58 | INOZYME PHARMA INC | 45790W108 | 3,428,084 | $19.1M | 0.45% |
| 59 | REVOLUTION MEDICINES INC | RVMDW | 702,712 | $18.8M | 0.45% |
| 60 | BIOMEA FUSION INC | BMEA | 836,898 | $18.4M | 0.44% |
| 61 | BIOCRYST PHARMACEUTICALS INC | BCRX | 2,497,193 | $17.6M | 0.42% |
| 62 | COMPASS THERAPEUTICS INC | CMPX | 5,513,788 | $17.5M | 0.42% |
| 63 | DISC MEDICINE INC | IRON | 363,468 | $16.1M | 0.38% |
| 64 | WARBY PARKER INC | WRBY | 1,325,000 | $15.5M | 0.37% |
| 65 | CHINOOK THERAPEUTICS INC | 16961L106 | 396,280 | $15.2M | 0.36% |
| 66 | CYTOKINETICS INC | CYTK | 447,600 | $14.6M | 0.35% |
| 67 | BOSTON SCIENTIFIC CORP | BSX | 267,500 | $14.5M | 0.34% |
| 68 | CELLDEX THERAPEUTICS INC NEW | CLDX | 421,615 | $14.3M | 0.34% |
| 69 | COLLEGIUM PHARMACEUTICAL INC | COLL | 650,000 | $14.0M | 0.33% |
| 70 | AMICUS THERAPEUTICS INC | FOLD | 1,063,806 | $13.4M | 0.32% |
| 71 | MERUS N V | N5749R100 | 478,531 | $12.6M | 0.30% |
| 72 | AURA BIOSCIENCES INC | AURA | 1,019,757 | $12.6M | 0.30% |
| 73 | HEALTH CATALYST INC | HCAT | 929,900 | $11.6M | 0.28% |
| 74 | MERSANA THERAPEUTICS INC | 59045L106 | 3,403,133 | $11.2M | 0.27% |
| 75 | EDAP TMS S A | EDAP | 1,186,300 | $10.9M | 0.26% |
| 76 | BIOHAVEN LTD | BHVN | 401,624 | $9.6M | 0.23% |
| 77 | MEREO BIOPHARMA GROUP PLC | MREO | 7,042,391 | $9.3M | 0.22% |
| 78 | PLIANT THERAPEUTICS INC | PLRX | 491,221 | $8.9M | 0.21% |
| 79 | ICOSAVAX INC | 45114M109 | 868,409 | $8.6M | 0.21% |
| 80 | PULMONX CORP | LUNG | 652,400 | $8.6M | 0.20% |
| 81 | RELAY THERAPEUTICS INC | RLAY | 673,966 | $8.5M | 0.20% |
| 82 | RENEO PHARMACEUTICALS INC | 75974E103 | 1,143,185 | $7.5M | 0.18% |
| 83 | GUARDANT HEALTH INC | GH | 200,000 | $7.2M | 0.17% |
| 84 | ANAPTYSBIO INC | ANABV | 341,637 | $6.9M | 0.17% |
| 85 | MACROGENICS INC | MGNX | 1,123,096 | $6.0M | 0.14% |
| 86 | SPRUCE BIOSCIENCES INC | SPRB | 2,728,125 | $5.9M | 0.14% |
| 87 | NOVOCURE LTD | NVCR | 125,000 | $5.2M | 0.12% |
| 88 | AURINIA PHARMACEUTICALS INC | AUPH | 479,540 | $4.6M | 0.11% |
| 89 | VIGIL NEUROSCIENCE INC | 92673K108 | 471,958 | $4.4M | 0.11% |
| 90 | KRYSTAL BIOTECH INC | KRYS | 34,901 | $4.1M | 0.10% |
| 91 | THESEUS PHARMACEUTICALS INC | 88369M101 | 437,329 | $4.1M | 0.10% |
| 92 | NOVAVAX INC | NVAX | 536,700 | $4.0M | 0.09% |
| 93 | PARATEK PHARMACEUTICALS INC | 699374302 | 1,734,037 | $3.8M | 0.09% |
| 94 | XILIO THERAPEUTICS INC | XLO | 1,440,759 | $3.8M | 0.09% |
| 95 | BEAM THERAPEUTICS INC | BEAM | 111,430 | $3.6M | 0.08% |
| 96 | LEAP THERAPEUTICS INC | CYPH | 1,074,517 | $3.4M | 0.08% |
| 97 | ACELYRIN INC | 00445A100 | 141,876 | $3.0M | 0.07% |
| 98 | FATE THERAPEUTICS INC | FATE | 612,215 | $2.9M | 0.07% |
| 99 | DESIGN THERAPEUTICS INC | DSGN | 460,391 | $2.9M | 0.07% |
| 100 | GOSSAMER BIO INC | GOSS | 9,573,000 | $2.9M | 0.07% |
| 101 | TRAVERE THERAPEUTICS INC | TVTX | 3,250,000 | $2.9M | 0.07% |
| 102 | BLACK DIAMOND THERAPEUTICS I | BDTX | 563,233 | $2.8M | 0.07% |
| 103 | ADAPTIMMUNE THERAPEUTICS PLC | ADTI | 2,787,845 | $2.6M | 0.06% |
| 104 | FULCRUM THERAPEUTICS INC | FULC | 727,673 | $2.4M | 0.06% |
| 105 | KINNATE BIOPHARMA INC | 49705R105 | 746,973 | $2.3M | 0.05% |
| 106 | IMMUNOGEN INC | 45253H101 | 112,620 | $2.1M | 0.05% |
| 107 | INVITAE CORP | 46185L103 | 1,650,495 | $1.9M | 0.04% |
| 108 | ESSA PHARMA INC | 29668H708 | 663,317 | $1.8M | 0.04% |
| 109 | AEGLEA BIOTHERAPEUTICS INC | 00773J103 | 3,413,906 | $1.5M | 0.04% |
| 110 | COMPUGEN LTD | CGEN | 1,289,990 | $1.5M | 0.03% |
| 111 | GAMIDA CELL LTD | M47364100 | 715,023 | $1.4M | 0.03% |
| 112 | GOSSAMER BIO INC | GOSS | 1,100,274 | $1.3M | 0.03% |
| 113 | NEUROCRINE BIOSCIENCES INC | NBIX | 1,000,000 | $1.3M | 0.03% |
| 114 | VINCERX PHARMA INC | VNCE | 891,719 | $1.2M | 0.03% |
| 115 | APPLIED THERAPEUTICS INC | 03828A101 | 780,791 | $999,412 | 0.02% |
| 116 | SPERO THERAPEUTICS INC | SPRO | 669,533 | $970,823 | 0.02% |
| 117 | ALTIMMUNE INC | ALT | 223,255 | $788,090 | 0.02% |
| 118 | NKARTA INC | NKTX | 331,571 | $726,140 | 0.02% |
| 119 | TEMPEST THERAPEUTICS INC | TPST | 536,214 | $680,992 | 0.02% |
| 120 | NEVRO CORP | 64157FAC7 | 500,000 | $462,430 | 0.01% |
| 121 | ATRECA INC | 04965G109 | 362,530 | $355,279 | 0.01% |
| 122 | ACELRX PHARMACEUTICALS INC | TLPH | 316,460 | $351,271 | 0.01% |
| 123 | NUVATION BIO INC | NUVB | 134,028 | $22,167 | 0.00% |