Rock Springs Capital Management LP Diversified Active

Location: Baltimore, MD

CIK: 0001595725 · Show all filings

Period: Q4 2022 (← Previous) (Next →)

Filing Date: Feb 14, 2023

Total Value: $4.156B (99.8% shares, 0.2% debt)

Holdings (120)

HUM HUMANA INC 5.3%
Value $218M Shares 426,500 Est. Cost $361.45 Unrealized +40.5%
IMCR IMMUNOCORE HLDGS PLC 4.6%
Value $190M Shares 3,321,066 Est. Cost $42.88 Unrealized
PODD INSULET CORP 3.7%
Value $154M Shares 524,250 Est. Cost $177.84 Unrealized +55.1%
UNH UNITEDHEALTH GROUP INC 3.4%
Value $143M Shares 270,000 Est. Cost $219.29 Unrealized +128.2%
NBIX NEUROCRINE BIOSCIENCES INC 3.2%
Value $134M Shares 1,122,500 Est. Cost $74.96 Unrealized +56.3%
ARGX ARGENX SE 3.2%
Value $133M Shares 350,000 Est. Cost $153.41 Unrealized
AGL AGILON HEALTH INC 3.1%
Value $127M Shares 7,872,500 Est. Cost $33.92 Unrealized -44.7%
PROMETHEUS BIOSCIENCES INC 2.7%
Value $113M Shares 1,031,550 Est. Cost $53.18 Unrealized
PEN PENUMBRA INC 2.7%
Value $113M Shares 508,250 Est. Cost $138.03 Unrealized +41.6%
EVH EVOLENT HEALTH INC 2.6%
Value $107M Shares 3,803,500 Est. Cost $24.94 Unrealized +15.0%
MDGL MADRIGAL PHARMACEUTICALS INC 2.4%
Value $101M Shares 348,121 Est. Cost $51.77 Unrealized +88.9%
IDXX IDEXX LABS INC 2.0%
Value $84.65M Shares 207,500 Est. Cost $335.38 Unrealized +15.7%
HORIZON THERAPEUTICS PUB L 2.0%
Value $84.18M Shares 739,700 Est. Cost $83.28 Unrealized
AGIO AGIOS PHARMACEUTICALS INC 2.0%
Value $84.14M Shares 2,996,592 Est. Cost $40.40 Unrealized -30.2%
BLUEPRINT MEDICINES CORP 2.0%
Value $82.87M Shares 1,891,510 Est. Cost $64.67 Unrealized
KARUNA THERAPEUTICS INC 2.0%
Value $81.3M Shares 413,762 Est. Cost $75.86 Unrealized
ISRG INTUITIVE SURGICAL INC 1.9%
Value $79.21M Shares 298,500 Est. Cost $264.69 Unrealized -7.9%
CEREVEL THERAPEUTICS HLDNG I 1.9%
Value $79.05M Shares 2,506,464 Est. Cost $24.09 Unrealized
ALNY ALNYLAM PHARMACEUTICALS INC 1.9%
Value $79.02M Shares 332,500 Est. Cost $95.74 Unrealized +122.8%
AKERO THERAPEUTICS INC 1.8%
Value $76.76M Shares 1,400,654 Est. Cost $29.00 Unrealized
ACHC ACADIA HEALTHCARE COMPANY IN 1.7%
Value $69.6M Shares 845,500 Est. Cost $49.50 Unrealized +66.5%
ALGN ALIGN TECHNOLOGY INC 1.5%
Value $63.77M Shares 302,350 Est. Cost $313.91 Unrealized -36.2%
ACRS ACLARIS THERAPEUTICS INC 1.5%
Value $62.39M Shares 3,961,249 Est. Cost $10.84 Unrealized +48.4%
RARE ULTRAGENYX PHARMACEUTICAL IN 1.4%
Value $59.78M Shares 1,290,279 Est. Cost $67.00 Unrealized -41.3%
BAX BAXTER INTL INC 1.4%
Value $58.62M Shares 1,150,000 Est. Cost $63.71 Unrealized -22.1%
SRPT SAREPTA THERAPEUTICS INC 1.4%
Value $56.5M Shares 436,000 Est. Cost $61.74 Unrealized +87.7%
DXCM DEXCOM INC 1.3%
Value $55.54M Shares 490,500 Est. Cost $94.31 Unrealized +16.4%
ASND ASCENDIS PHARMA A/S 1.3%
Value $51.97M Shares 425,500 Est. Cost $85.24 Unrealized
SEAGEN INC 1.2%
Value $51.43M Shares 400,200 Est. Cost $158.76 Unrealized
RYTM RHYTHM PHARMACEUTICALS INC 1.2%
Value $51.28M Shares 1,760,865 Est. Cost $15.80 Unrealized +62.7%
EW EDWARDS LIFESCIENCES CORP 1.2%
Value $48.19M Shares 645,900 Est. Cost $62.58 Unrealized +23.2%
XENE XENON PHARMACEUTICALS INC 1.1%
Value $46.36M Shares 1,175,672 Est. Cost $22.63 Unrealized +60.9%
AMLX AMYLYX PHARMACEUTICALS INC 1.1%
Value $45.44M Shares 1,229,637 Est. Cost $31.21 Unrealized +13.7%
PRTA PROTHENA CORP PLC 1.1%
Value $45.4M Shares 753,462 Est. Cost $17.26 Unrealized +239.2%
EXAS EXACT SCIENCES CORP 1.1%
Value $43.94M Shares 887,500 Est. Cost $50.98 Unrealized -19.8%
WST WEST PHARMACEUTICAL SVSC INC 1.1%
Value $43.66M Shares 185,500 Est. Cost $295.41 Unrealized -20.4%
NEVRO CORP 1.0%
Value $42.68M Shares 1,077,900 Est. Cost $81.31 Unrealized
PHR PHREESIA INC 1.0%
Value $42.15M Shares 1,302,500 Est. Cost $28.73 Unrealized -5.5%
PCRX PACIRA BIOSCIENCES INC 1.0%
Value $39.87M Shares 1,032,600 Est. Cost $48.65 Unrealized +0.0%
OLINK HLDG AB 0.9%
Value $36.67M Shares 1,445,000 Est. Cost $22.16 Unrealized
MIRATI THERAPEUTICS INC 0.9%
Value $36.48M Shares 805,024 Est. Cost $81.75 Unrealized
MIRM MIRUM PHARMACEUTICALS INC 0.8%
Value $35.02M Shares 1,795,733 Est. Cost $14.23 Unrealized +38.9%
FRPT FRESHPET INC 0.8%
Value $34.67M Shares 657,000 Est. Cost $60.72 Unrealized -2.0%
ABCAM PLC 0.8%
Value $33.92M Shares 2,180,000 Est. Cost $18.91 Unrealized
ZLAB ZAI LAB LTD 0.8%
Value $32.53M Shares 1,059,700 Est. Cost $61.65 Unrealized
KYMR KYMERA THERAPEUTICS INC 0.7%
Value $30.65M Shares 1,227,779 Est. Cost $31.64 Unrealized -15.7%
IRTC IRHYTHM TECHNOLOGIES INC 0.7%
Value $28.99M Shares 309,450 Est. Cost $65.15 Unrealized +67.1%
BMRN BIOMARIN PHARMACEUTICAL INC 0.7%
Value $27.37M Shares 264,500 Est. Cost $85.70 Unrealized +9.5%
XLV SELECT SECTOR SPDR TR 0.7%
Value $27.17M Shares 200,000 Est. Cost $128.24 Unrealized
CMPX COMPASS THERAPEUTICS INC 0.6%
Value $26.83M Shares 5,333,188 Est. Cost $3.29 Unrealized +21.3%
MERSANA THERAPEUTICS INC 0.6%
Value $24.05M Shares 4,103,803 Est. Cost $13.04 Unrealized
SHOCKWAVE MED INC 0.6%
Value $23.67M Shares 115,100 Est. Cost $79.81 Unrealized
LEGN LEGEND BIOTECH CORP 0.5%
Value $22.49M Shares 450,466 Est. Cost $40.06 Unrealized
BCRX BIOCRYST PHARMACEUTICALS INC 0.5%
Value $21.71M Shares 1,890,737 Est. Cost $10.86 Unrealized +14.8%
AZTA AZENTA INC 0.5%
Value $20.46M Shares 351,500 Est. Cost $66.13 Unrealized -22.6%
CYTK CYTOKINETICS INC 0.5%
Value $20.3M Shares 443,000 Est. Cost $41.02 Unrealized +4.7%
TVTX TRAVERE THERAPEUTICS INC 0.5%
Value $20.01M Shares 951,650 Est. Cost $24.60 Unrealized -13.9%
IMTX IMMATICS N.V 0.5%
Value $19.81M Shares 2,274,784 Est. Cost $9.25 Unrealized +11.9%
DYNAVAX TECHNOLOGIES CORP 0.5%
Value $19.3M Shares 1,813,758 Est. Cost $7.97 Unrealized
CLDX CELLDEX THERAPEUTICS INC NEW 0.5%
Value $18.79M Shares 421,504 Est. Cost $30.05 Unrealized +18.8%
CNMD CONMED CORP 0.4%
Value $18.17M Shares 205,000 Est. Cost $114.00 Unrealized -29.4%
ANAB ANAPTYSBIO INC 0.4%
Value $17.87M Shares 576,600 Est. Cost $28.23 Unrealized +0.0%
COLL COLLEGIUM PHARMACEUTICAL INC 0.4%
Value $16.82M Shares 725,000 Est. Cost $15.97 Unrealized +26.3%
WRBY WARBY PARKER INC 0.4%
Value $16.44M Shares 1,218,975 Est. Cost $41.37 Unrealized -63.0%
ACCOLADE INC 0.4%
Value $15.1M Shares 1,938,000 Est. Cost $25.32 Unrealized
CINCOR PHARMA INC 0.3%
Value $13.72M Shares 1,116,578 Est. Cost $19.88 Unrealized
LFST LIFESTANCE HEALTH GROUP INC 0.3%
Value $13.34M Shares 2,700,000 Est. Cost $18.84 Unrealized -67.2%
CHINOOK THERAPEUTICS INC 0.3%
Value $13.3M Shares 507,512 Est. Cost $15.86 Unrealized
FOLD AMICUS THERAPEUTICS INC 0.3%
Value $12.99M Shares 1,063,806 Est. Cost $11.48 Unrealized -1.9%
VERVE THERAPEUTICS INC 0.3%
Value $10.81M Shares 558,837 Est. Cost $57.71 Unrealized
AURA AURA BIOSCIENCES INC 0.3%
Value $10.71M Shares 1,019,757 Est. Cost $17.87 Unrealized -28.8%
RLAY RELAY THERAPEUTICS INC 0.2%
Value $10.07M Shares 673,966 Est. Cost $33.24 Unrealized -42.4%
HCAT HEALTH CATALYST INC 0.2%
Value $9.885M Shares 929,900 Est. Cost $33.08 Unrealized -70.8%
EDAP EDAP TMS S A 0.2%
Value $9.701M Shares 910,000 Est. Cost $7.07 Unrealized
AMRYT PHARMA PLC 0.2%
Value $9.677M Shares 1,325,625 Est. Cost $12.05 Unrealized
BHVN BIOHAVEN LTD 0.2%
Value $9.285M Shares 668,913 Est. Cost $12.40 Unrealized +13.9%
NVCR NOVOCURE LTD 0.2%
Value $9.169M Shares 125,000 Est. Cost $37.58 Unrealized +100.2%
MGNX MACROGENICS INC 0.2%
Value $7.536M Shares 1,123,096 Est. Cost $17.45 Unrealized -68.6%
IRON DISC MEDICINE INC 0.2%
Value $6.753M Shares 339,497 Est. Cost $49.79 Unrealized 0.0%
ICOSAVAX INC 0.1%
Value $6.201M Shares 781,000 Est. Cost $28.18 Unrealized
BMEA BIOMEA FUSION INC 0.1%
Value $6.161M Shares 730,846 Est. Cost $17.65 Unrealized -51.7%
VIGIL NEUROSCIENCE INC 0.1%
Value $5.899M Shares 471,958 Est. Cost $7.03 Unrealized
INVITAE CORP 0.1%
Value $5.761M Shares 3,097,525 Est. Cost $20.06 Unrealized
LUNG PULMONX CORP 0.1%
Value $5.5M Shares 652,400 Est. Cost $45.31 Unrealized -79.0%
NVAX NOVAVAX INC 0.1%
Value $5.475M Shares 532,600 Est. Cost $43.41 Unrealized -59.3%
GH GUARDANT HEALTH INC 0.1%
Value $5.44M Shares 200,000 Est. Cost $42.73 Unrealized +7.1%
GAMIDA CELL LTD 0.1%
Value $5.315M Shares 4,119,883 Est. Cost $3.36 Unrealized
F-STAR THERAPEUTICS INC 0.1%
Value $4.752M Shares 751,889 Est. Cost $8.59 Unrealized
DSGN DESIGN THERAPEUTICS INC 0.1%
Value $4.724M Shares 460,391 Est. Cost $26.33 Unrealized -48.5%
MREO MEREO BIOPHARMA GROUP PLC 0.1%
Value $4.684M Shares 6,244,897 Est. Cost $2.88 Unrealized
KINNATE BIOPHARMA INC 0.1%
Value $4.557M Shares 746,973 Est. Cost $24.53 Unrealized
BEAM BEAM THERAPEUTICS INC 0.1%
Value $4.358M Shares 111,430 Est. Cost $39.75 Unrealized +12.7%
ADAPY ADAPTIMMUNE THERAPEUTICS PLC 0.1%
Value $3.908M Shares 2,676,536 Est. Cost $7.36 Unrealized
ALT ALTIMMUNE INC 0.1%
Value $3.673M Shares 223,255 Est. Cost $14.76 Unrealized -23.9%
XLO XILIO THERAPEUTICS INC 0.1%
Value $3.666M Shares 1,362,878 Est. Cost $15.36 Unrealized -84.3%
PARATEK PHARMACEUTICALS INC 0.1%
Value $3.243M Shares 1,734,037 Est. Cost $6.08 Unrealized
INOZYME PHARMA INC 0.1%
Value $3.24M Shares 3,086,027 Est. Cost $10.11 Unrealized
GOSSAMER BIO INC 0.1%
Value $3.097M Shares 9,573,000 Est. Cost $1.01 Unrealized
TRAVERE THERAPEUTICS INC 0.1%
Value $3M Shares 3,250,000 Est. Cost $0.79 Unrealized
FULC FULCRUM THERAPEUTICS INC 0.1%
Value $2.8M Shares 384,590 Est. Cost $18.95 Unrealized -65.6%
RENEO PHARMACEUTICALS INC 0.1%
Value $2.664M Shares 1,143,185 Est. Cost $9.31 Unrealized
NKTX NKARTA INC 0.1%
Value $2.356M Shares 393,389 Est. Cost $26.66 Unrealized -62.2%
THESEUS PHARMACEUTICALS INC 0.1%
Value $2.178M Shares 437,329 Est. Cost $12.68 Unrealized
AUPH AURINIA PHARMACEUTICALS INC 0.0%
Value $2.072M Shares 479,540 Est. Cost $13.26 Unrealized -56.2%
SPRUCE BIOSCIENCES INC 0.0%
Value $1.781M Shares 1,622,689 Est. Cost $24.10 Unrealized
LEAP THERAPEUTICS INC 0.0%
Value $1.647M Shares 3,659,847 Est. Cost $3.92 Unrealized
NEUROCRINE BIOSCIENCES INC 0.0%
Value $1.587M Shares 1,000,000 Est. Cost $1.45 Unrealized
AEGLEA BIOTHERAPEUTICS INC 0.0%
Value $1.536M Shares 3,413,906 Est. Cost $4.00 Unrealized
ESSA PHARMA INC 0.0%
Value $1.323M Shares 524,944 Est. Cost $28.44 Unrealized
SPRO SPERO THERAPEUTICS INC 0.0%
Value $1.158M Shares 669,533 Est. Cost $11.75 Unrealized -84.1%
FATE FATE THERAPEUTICS INC 0.0%
Value $1.11M Shares 110,000 Est. Cost $89.50 Unrealized -79.0%
TEMPEST THERAPEUTICS INC 0.0%
Value $947K Shares 823,654 Est. Cost $7.50 Unrealized
CGEN COMPUGEN LTD 0.0%
Value $923K Shares 1,289,990 Est. Cost $6.12 Unrealized -85.8%
VINCERX PHARMA INC 0.0%
Value $910K Shares 891,719 Est. Cost $12.19 Unrealized
GOSS GOSSAMER BIO INC 0.0%
Value $816K Shares 376,048 Est. Cost $12.41 Unrealized -33.7%
TLPH ACELRX PHARMACEUTICALS INC 0.0%
Value $715K Shares 316,460 Est. Cost $2.81 Unrealized 0.0%
NEVRO CORP 0.0%
Value $459K Shares 500,000 Est. Cost $1.37 Unrealized
APPLIED THERAPEUTICS INC 0.0%
Value $453K Shares 596,680 Est. Cost $31.74 Unrealized
ATRECA INC 0.0%
Value $290K Shares 362,530 Est. Cost $13.90 Unrealized
NUVATION BIO INC 0.0%
Value $19,367 Shares 134,028 Est. Cost $2.67 Unrealized