13F HOLDINGS REPORT
Rock Springs Capital Management LP
Quarter ended Q2 2023 · Filed May 15, 2023 · Accession 0001172661-23-002183
Total Value
$4.19B
Positions
121
Other Managers
0
Confidential Omitted
No
Holdings (121)
| # | Issuer | Ticker / CUSIP | Shares | Value | % of Filing |
|---|---|---|---|---|---|
| 1 | HUMANA INC | HUM | 426,500 | $207.0M | 4.94% |
| 2 | AGILON HEALTH INC | AGL | 7,882,500 | $187.2M | 4.47% |
| 3 | INSULET CORP | PODD | 536,750 | $171.2M | 4.08% |
| 4 | IMMUNOCORE HLDGS PLC | IMCR | 3,001,662 | $148.4M | 3.54% |
| 5 | ARGENX SE | ARGX | 350,000 | $130.4M | 3.11% |
| 6 | UNITEDHEALTH GROUP INC | UNH | 270,000 | $127.6M | 3.04% |
| 7 | EVOLENT HEALTH INC | EVH | 3,803,500 | $123.4M | 2.94% |
| 8 | NEUROCRINE BIOSCIENCES INC | NBIX | 1,210,100 | $122.5M | 2.92% |
| 9 | PENUMBRA INC | PEN | 433,500 | $120.8M | 2.88% |
| 10 | PROMETHEUS BIOSCIENCES INC | 74349U108 | 1,031,550 | $110.7M | 2.64% |
| 11 | IDEXX LABS INC | 45168D104 | 207,500 | $103.8M | 2.48% |
| 12 | BLUEPRINT MEDICINES CORP | 09627Y109 | 2,033,048 | $91.5M | 2.18% |
| 13 | KARUNA THERAPEUTICS INC | 48576A100 | 493,527 | $89.6M | 2.14% |
| 14 | MADRIGAL PHARMACEUTICALS INC | MDGL | 348,121 | $84.3M | 2.01% |
| 15 | ALIGN TECHNOLOGY INC | ALGN | 247,350 | $82.6M | 1.97% |
| 16 | SEAGEN INC | SE | 400,200 | $81.0M | 1.93% |
| 17 | HORIZON THERAPEUTICS PUB L | G46188101 | 740,100 | $80.8M | 1.93% |
| 18 | INTUITIVE SURGICAL INC | ISRG | 298,500 | $76.3M | 1.82% |
| 19 | WEST PHARMACEUTICAL SVSC INC | 955306105 | 202,000 | $70.0M | 1.67% |
| 20 | ALNYLAM PHARMACEUTICALS INC | ALNY | 345,000 | $69.1M | 1.65% |
| 21 | EXACT SCIENCES CORP | 30063P105 | 941,500 | $63.8M | 1.52% |
| 22 | ACADIA HEALTHCARE COMPANY IN | ACHC | 860,868 | $62.2M | 1.48% |
| 23 | CEREVEL THERAPEUTICS HLDNG I | 15678U128 | 2,513,916 | $61.3M | 1.46% |
| 24 | AGIOS PHARMACEUTICALS INC | AGIO | 2,661,605 | $61.1M | 1.46% |
| 25 | SAREPTA THERAPEUTICS INC | SRPT | 442,500 | $61.0M | 1.46% |
| 26 | DEXCOM INC | DXCM | 490,500 | $57.0M | 1.36% |
| 27 | AKERO THERAPEUTICS INC | 00973Y108 | 1,454,254 | $55.6M | 1.33% |
| 28 | ULTRAGENYX PHARMACEUTICAL IN | RARE | 1,336,401 | $53.6M | 1.28% |
| 29 | EDWARDS LIFESCIENCES CORP | EW | 645,900 | $53.4M | 1.27% |
| 30 | ASCENDIS PHARMA A/S | ASND | 425,500 | $45.6M | 1.09% |
| 31 | FRESHPET INC | FRPT | 662,500 | $43.9M | 1.05% |
| 32 | MIRUM PHARMACEUTICALS INC | MIRM | 1,795,733 | $43.1M | 1.03% |
| 33 | AMYLYX PHARMACEUTICALS INC | AMLX | 1,452,816 | $42.6M | 1.02% |
| 34 | XENON PHARMACEUTICALS INC | XENE | 1,178,002 | $42.2M | 1.01% |
| 35 | PACIRA BIOSCIENCES INC | PCRX | 1,032,600 | $42.1M | 1.01% |
| 36 | PHREESIA INC | PHR | 1,302,500 | $42.1M | 1.00% |
| 37 | BIOMEA FUSION INC | BMEA | 1,297,213 | $40.2M | 0.96% |
| 38 | MIRATI THERAPEUTICS INC | 60468T105 | 1,065,261 | $39.6M | 0.94% |
| 39 | NEVRO CORP | 64157F103 | 1,077,900 | $39.0M | 0.93% |
| 40 | IRHYTHM TECHNOLOGIES INC | IRTC | 309,450 | $38.4M | 0.92% |
| 41 | OLINK HLDG AB | OLN | 1,650,000 | $37.2M | 0.89% |
| 42 | ACCOLADE INC | 00437E102 | 2,545,000 | $36.6M | 0.87% |
| 43 | PROTHENA CORP PLC | PRTA | 753,462 | $36.5M | 0.87% |
| 44 | KYMERA THERAPEUTICS INC | KYMR | 1,228,379 | $36.4M | 0.87% |
| 45 | ZAI LAB LTD | ZLAB | 1,059,700 | $35.2M | 0.84% |
| 46 | ACLARIS THERAPEUTICS INC | ACRS | 3,961,849 | $32.1M | 0.76% |
| 47 | ABCAM PLC | 000380204 | 2,242,500 | $30.2M | 0.72% |
| 48 | TRAVERE THERAPEUTICS INC | TVTX | 1,276,650 | $28.7M | 0.69% |
| 49 | RHYTHM PHARMACEUTICALS INC | RYTM | 1,597,123 | $28.5M | 0.68% |
| 50 | SELECT SECTOR SPDR TR | 81369Y209 | 200,000 | $25.9M | 0.62% |
| 51 | BIOMARIN PHARMACEUTICAL INC | BMRN | 264,500 | $25.7M | 0.61% |
| 52 | SHOCKWAVE MED INC | 82489T104 | 115,100 | $25.0M | 0.60% |
| 53 | LEGEND BIOTECH CORP | LEGN | 458,265 | $22.1M | 0.53% |
| 54 | LIFESTANCE HEALTH GROUP INC | LFST | 2,900,000 | $21.5M | 0.51% |
| 55 | CONMED CORP | CNMD | 205,000 | $21.3M | 0.51% |
| 56 | BIOCRYST PHARMACEUTICALS INC | BCRX | 2,334,085 | $19.5M | 0.46% |
| 57 | AMRYT PHARMA PLC | 03217L106 | 1,325,625 | $19.3M | 0.46% |
| 58 | AZENTA INC | AZTA | 431,200 | $19.2M | 0.46% |
| 59 | INOZYME PHARMA INC | 45790W108 | 3,214,900 | $18.4M | 0.44% |
| 60 | MINERALYS THERAPEUTICS INC | MLYS | 1,167,492 | $18.3M | 0.44% |
| 61 | COMPASS THERAPEUTICS INC | CMPX | 5,513,788 | $18.0M | 0.43% |
| 62 | DYNAVAX TECHNOLOGIES CORP | 268158201 | 1,813,758 | $17.8M | 0.42% |
| 63 | IMMATICS N.V | IMTX | 2,513,923 | $17.3M | 0.41% |
| 64 | MERSANA THERAPEUTICS INC | 59045L106 | 4,103,803 | $16.9M | 0.40% |
| 65 | CYTOKINETICS INC | CYTK | 447,600 | $15.8M | 0.38% |
| 66 | COLLEGIUM PHARMACEUTICAL INC | COLL | 650,000 | $15.6M | 0.37% |
| 67 | REVOLUTION MEDICINES INC | RVMDW | 702,712 | $15.2M | 0.36% |
| 68 | CELLDEX THERAPEUTICS INC NEW | CLDX | 421,504 | $15.2M | 0.36% |
| 69 | WARBY PARKER INC | WRBY | 1,300,000 | $13.8M | 0.33% |
| 70 | PLIANT THERAPEUTICS INC | PLRX | 491,221 | $13.1M | 0.31% |
| 71 | ANAPTYSBIO INC | ANABV | 576,600 | $12.5M | 0.30% |
| 72 | AMICUS THERAPEUTICS INC | FOLD | 1,063,806 | $11.8M | 0.28% |
| 73 | CHINOOK THERAPEUTICS INC | 16961L106 | 507,512 | $11.7M | 0.28% |
| 74 | EDAP TMS S A | EDAP | 1,030,000 | $11.4M | 0.27% |
| 75 | RELAY THERAPEUTICS INC | RLAY | 673,966 | $11.1M | 0.26% |
| 76 | HEALTH CATALYST INC | HCAT | 929,900 | $10.9M | 0.26% |
| 77 | AURA BIOSCIENCES INC | AURA | 1,019,757 | $9.5M | 0.23% |
| 78 | BIOHAVEN LTD | BHVN | 685,623 | $9.4M | 0.22% |
| 79 | VERVE THERAPEUTICS INC | 92539P101 | 558,837 | $8.1M | 0.19% |
| 80 | MACROGENICS INC | MGNX | 1,123,096 | $8.1M | 0.19% |
| 81 | NOVOCURE LTD | NVCR | 125,000 | $7.5M | 0.18% |
| 82 | PULMONX CORP | LUNG | 652,400 | $7.3M | 0.17% |
| 83 | RENEO PHARMACEUTICALS INC | 75974E103 | 1,143,185 | $6.8M | 0.16% |
| 84 | DISC MEDICINE INC | IRON | 313,468 | $6.6M | 0.16% |
| 85 | SPRUCE BIOSCIENCES INC | SPRB | 2,728,125 | $6.0M | 0.14% |
| 86 | AURINIA PHARMACEUTICALS INC | AUPH | 479,540 | $5.3M | 0.13% |
| 87 | ICOSAVAX INC | 45114M109 | 864,510 | $5.0M | 0.12% |
| 88 | GUARDANT HEALTH INC | GH | 200,000 | $4.7M | 0.11% |
| 89 | KINNATE BIOPHARMA INC | 49705R105 | 746,973 | $4.7M | 0.11% |
| 90 | VIGIL NEUROSCIENCE INC | 92673K108 | 471,958 | $4.6M | 0.11% |
| 91 | XILIO THERAPEUTICS INC | XLO | 1,440,759 | $4.6M | 0.11% |
| 92 | MEREO BIOPHARMA GROUP PLC | MREO | 6,244,897 | $4.4M | 0.11% |
| 93 | PARATEK PHARMACEUTICALS INC | 699374302 | 1,734,037 | $4.4M | 0.11% |
| 94 | INVITAE CORP | 46185L103 | 3,241,425 | $4.4M | 0.10% |
| 95 | THESEUS PHARMACEUTICALS INC | 88369M101 | 437,329 | $3.9M | 0.09% |
| 96 | NOVAVAX INC | NVAX | 535,400 | $3.7M | 0.09% |
| 97 | FATE THERAPEUTICS INC | FATE | 612,215 | $3.5M | 0.08% |
| 98 | BEAM THERAPEUTICS INC | BEAM | 111,430 | $3.4M | 0.08% |
| 99 | TRAVERE THERAPEUTICS INC | TVTX | 3,250,000 | $3.1M | 0.07% |
| 100 | ADAPTIMMUNE THERAPEUTICS PLC | ADTI | 2,787,845 | $3.0M | 0.07% |
| 101 | DESIGN THERAPEUTICS INC | DSGN | 460,391 | $2.7M | 0.06% |
| 102 | GOSSAMER BIO INC | GOSS | 9,573,000 | $2.6M | 0.06% |
| 103 | 89BIO INC | 282559103 | 164,500 | $2.5M | 0.06% |
| 104 | FULCRUM THERAPEUTICS INC | FULC | 727,673 | $2.1M | 0.05% |
| 105 | TEMPEST THERAPEUTICS INC | TPST | 823,654 | $1.9M | 0.05% |
| 106 | GAMIDA CELL LTD | M47364100 | 2,344,649 | $1.9M | 0.05% |
| 107 | LEAP THERAPEUTICS INC | 52187K101 | 4,655,186 | $1.6M | 0.04% |
| 108 | ESSA PHARMA INC | 29668H708 | 524,944 | $1.6M | 0.04% |
| 109 | NKARTA INC | NKTX | 393,389 | $1.4M | 0.03% |
| 110 | GOSSAMER BIO INC | GOSS | 1,100,274 | $1.4M | 0.03% |
| 111 | NEUROCRINE BIOSCIENCES INC | NBIX | 1,000,000 | $1.4M | 0.03% |
| 112 | AEGLEA BIOTHERAPEUTICS INC | 00773J103 | 3,413,906 | $990,033 | 0.02% |
| 113 | SPERO THERAPEUTICS INC | SPRO | 669,533 | $970,823 | 0.02% |
| 114 | ALTIMMUNE INC | ALT | 223,255 | $942,136 | 0.02% |
| 115 | VINCERX PHARMA INC | VNCE | 891,719 | $927,388 | 0.02% |
| 116 | COMPUGEN LTD | CGEN | 1,289,990 | $905,573 | 0.02% |
| 117 | APPLIED THERAPEUTICS INC | 03828A101 | 780,791 | $633,300 | 0.02% |
| 118 | NEVRO CORP | 64157FAC7 | 500,000 | $470,000 | 0.01% |
| 119 | ATRECA INC | 04965G109 | 362,530 | $413,284 | 0.01% |
| 120 | ACELRX PHARMACEUTICALS INC | TLPH | 316,460 | $208,231 | 0.00% |
| 121 | NUVATION BIO INC | NUVB | 134,028 | $16,083 | 0.00% |