Fund Holdings — Rock Springs Capital Management LP

Total Portfolio Value:
$2.05B
Total Bought:
$424.44M
Total Sold:
$342.67M
Net Transaction:
+$81.77M
Notable People:
Rock Springs Capital Llc
Securities
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SharesValue
Q1 2026
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Q2 2026
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Change
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Q1 2026
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Q2 2026
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Weight (%)
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Change
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Revolution Medicines, Inc.(RVMD)1,209,4651,105,210-104,255$117.62M$206.98M10.10%+$89.36M
Travere Therapeutics, Inc.(TVTX)1,477,9542,179,069+701,115$43.91M$123.79M6.04%+$79.88M
Eli Lilly and Company(LLY)98,70098,7000$90.78M$118.38M5.78%+$27.60M
Madrigal Pharmaceuticals, Inc.(MDGL)170,999174,999+4,000$89.51M$93.97M4.59%+$4.45M
Mirum Pharmaceuticals, Inc.(MIRM)811,294798,145-13,149$74.95M$93.44M4.56%+$18.49M
Rhythm Pharmaceuticals, Inc.(RYTM)689,748692,598+2,850$59.99M$76.90M3.75%+$16.91M
Kymera Therapeutics, Inc.(KYMR)496,871453,156-43,715$41.38M$51.96M2.54%+$10.58M
argenx SEADR(ARGX)98,50052,750-45,750$71.93M$48.94M2.39%-$22.99M
Ascendis Pharma A/S(ASND)0168,750+168,750$0$45.01M2.20%+$45.01M
Xenon Pharmaceuticals Inc.(XENE)763,020683,907-79,113$44.37M$41.28M2.01%-$3.09M
Scholar Rock Holding Corporation(SRRK)739,816715,452-24,364$36.37M$39.35M1.92%+$2.98M
Insmed Incorporated(INSM)314,300362,150+47,850$51.39M$38.61M1.88%-$12.78M
Penumbra, Inc.(PEN)120,500115,750-4,750$39.57M$36.55M1.78%-$3.02M
Structure Therapeutics IncADS640,217640,317+100$30.86M$34.37M1.68%+$3.51M
Ultragenyx Pharmaceutical Inc.(RARE)1,218,773967,855-250,918$25.53M$32.32M1.58%+$6.78M
iRhythm Holdings, Inc.(IRTC)261,750269,650+7,900$30.89M$32.07M1.57%+$1.18M
Intuitive Surgical, Inc.(ISRG)82,00076,460-5,540$37.80M$30.41M1.48%-$7.39M
agilon health, inc.(AGL)260,000262,600+2,600$2.06M$28.15M1.37%+$26.09M
UnitedHealth Group Incorporated(UNH)53,00063,750+10,750$14.34M$26.50M1.29%+$12.16M
Celldex Therapeutics, Inc.(CLDX)650,270699,146+48,876$20.63M$26.02M1.27%+$5.39M
Erasca, Inc.(ERAS)1,103,4691,402,150+298,681$17.85M$25.69M1.25%+$7.83M
Neurocrine Biosciences, Inc.(NBIX)150,450144,750-5,700$19.82M$24.40M1.19%+$4.58M
Enliven Therapeutics Inc826,500464,625-361,875$32.40M$23.58M1.15%-$8.82M
Tenet Healthcare Corporation(THC)125,000125,0000$23.59M$23.39M1.14%-$203.8K
DexCom, Inc.(DXCM)355,600343,000-12,600$22.33M$23.10M1.13%+$769.4K
Aclaris Therapeutics, Inc.(ACRS)4,472,6504,330,532-142,118$16.77M$22.91M1.12%+$6.14M
MiniMed Group, Inc.(MMED)1,055,0001,520,000+465,000$15.74M$22.72M1.11%+$6.98M
Boston Scientific Corporation(BSX)515,300528,500+13,200$32.34M$22.56M1.10%-$9.78M
Pharvaris N V
COM
645,533648,333+2,800$18.24M$22.42M1.09%+$4.18M
Avalyn Pharmaceuticals Inc0662,918+662,918$0$21.82M1.07%+$21.82M
Hemab Therapeutics Hldgs Inc0575,432+575,432$0$21.14M1.03%+$21.14M
Dyne Therapeutics, Inc.(DYN)972,198942,154-30,044$17.63M$20.93M1.02%+$3.30M
Alnylam Pharmaceuticals, Inc.(ALNY)74,00066,750-7,250$24.48M$20.09M0.98%-$4.39M
Cogent Biosciences, Inc.(COGT)624,155515,917-108,238$24.02M$19.97M0.97%-$4.06M
Agios Pharmaceuticals, Inc.(AGIO)799,163532,563-266,600$27.04M$19.76M0.96%-$7.27M
Newamsterdam Pharma Company
ORDINARY SHARES
588,794582,744-6,050$18.85M$19.75M0.96%+$901.9K
Vera Therapeutics, Inc.CL A(VERA)503,585427,584-76,001$20.26M$18.35M0.90%-$1.91M
Tarsus Pharmaceuticals, Inc.(TARS)225,179277,087+51,908$15.80M$17.44M0.85%+$1.64M
Heartflow, Inc.(HTFL)572,500573,500+1,000$13.93M$16.83M0.82%+$2.90M
MBX Biosciences, Inc.(MBX)287,967298,218+10,251$8.60M$16.46M0.80%+$7.87M
Cytokinetics, Incorporated(CYTK)45,364187,980+142,616$2.99M$16.01M0.78%+$13.02M
Bicara Therapeutics Inc489,095535,286+46,191$9.73M$15.89M0.78%+$6.16M
Parabilis Medicines Inc0578,028+578,028$0$15.82M0.77%+$15.82M
Zai Lab LimitedADR(ZLAB)814,707814,7070$15.32M$15.48M0.76%+$154.8K
Danaher Corporation(DHR)61,50076,300+14,800$11.66M$14.53M0.71%+$2.87M
Tango Therapeutics, Inc.(TNGX)386,915456,551+69,636$8.09M$14.27M0.70%+$6.18M
Evolent Health, Inc.CL A(EVH)2,675,0002,500,000-175,000$6.10M$13.55M0.66%+$7.45M
PTC Therapeutics, Inc.(PTCT)161,798162,298+500$11.02M$13.24M0.65%+$2.22M
Mineralys Therapeutics, Inc.(MLYS)439,751484,951+45,200$11.91M$13.08M0.64%+$1.17M
Zenas BioPharma, Inc.(ZBIO)502,077502,0770$9.82M$12.74M0.62%+$2.93M
Ardelyx Inc2,299,4732,241,769-57,704$13.77M$11.43M0.56%-$2.34M
Inspire Medical Systems, Inc.(INSP)131,800244,000+112,200$6.80M$10.88M0.53%+$4.09M
BridgeBio Pharma, Inc.(BBIO)128,250144,750+16,500$9.52M$10.78M0.53%+$1.26M
Alkermes plcSHS(ALKS)183,986199,811+15,825$6.51M$10.47M0.51%+$3.96M
Summit Therapeutics Inc.(SMMT)710,000715,000+5,000$13.46M$10.42M0.51%-$3.04M
Azenta, Inc.(AZTA)569,100403,000-166,100$12.03M$10.28M0.50%-$1.74M
Indivior Pharmaceuticals, Inc.(INDV)200,000245,500+45,500$6.10M$10.07M0.49%+$3.98M
Stryker Corporation(SYK)14,80029,000+14,200$4.86M$9.13M0.45%+$4.27M
Amylyx Pharmaceuticals, Inc.(AMLX)499,764499,7640$6.95M$8.98M0.44%+$2.03M
Caris Life Sciences, Inc.(CAI)563,000487,500-75,500$10.07M$8.69M0.42%-$1.38M
Omada Health, Inc.(OMDA)541,000373,000-168,000$6.80M$8.19M0.40%+$1.39M
Compass Therapeutics, Inc.(CMPX)3,305,3083,524,929+219,621$17.49M$7.72M0.38%-$9.77M
Immunome, Inc.(IMNM)347,666347,6660$7.60M$7.37M0.36%-$236.4K
EDAP TMS S.A.ADR(FOCL)1,378,0001,386,000+8,000$5.13M$7.18M0.35%+$2.05M
Phreesia, Inc.(PHR)600,400696,900+96,500$5.03M$7.17M0.35%+$2.14M
Omeros Corporation(OMER)0718,499+718,499$0$6.83M0.33%+$6.83M
Definium Therapeutics, Inc.(DFTX)0143,187+143,187$0$6.74M0.33%+$6.74M
Corcept Therapeutics Incorporated(CORT)50,25072,000+21,750$2.03M$6.26M0.31%+$4.23M
Janux Therapeutics, Inc.(JANX)367,009367,0090$5.10M$5.64M0.28%+$535.8K
Mobia Med Inc0418,200+418,200$0$5.60M0.27%+$5.60M
Arcus Biosciences, Inc.(RCUS)180,000180,0000$3.89M$5.55M0.27%+$1.66M
Thermo Fisher Scientific Inc.(TMO)10,00010,0000$4.92M$5.01M0.24%+$98.3K
Trevi Therapeutics, Inc.(TRVI)0260,000+260,000$0$4.85M0.24%+$4.85M
Sionna Therapeutics, Inc.(SION)99,42999,4290$3.99M$4.37M0.21%+$387.8K
CVS Health Corporation(CVS)40,00040,0000$2.87M$4.14M0.20%+$1.27M
EyePoint, Inc.(EYPT)258,739268,519+9,780$3.34M$3.84M0.19%+$504.7K
Ocular Therapeutix, Inc.(OCUL)383,716383,7160$3.25M$3.77M0.18%+$518.0K
Spyre Therapeutics, Inc.(SYRE)042,254+42,254$0$3.75M0.18%+$3.75M
Talphera, Inc.(TLPH)3,589,1863,589,1860$2.68M$3.70M0.18%+$1.02M
Roivant Sciences Ltd.SHS(ROIV)97,000101,000+4,000$2.69M$3.57M0.17%+$887.5K
Vaxcyte, Inc.(PCVX)60,25060,2500$3.50M$3.50M0.17%+$1.2K
Neurogene Inc.(NGNE)104,339106,750+2,411$2.10M$3.36M0.16%+$1.25M
Century Therapeutics, Inc.(IPSC)1,304,3471,304,3470$2.95M$3.20M0.16%+$247.8K
Alphatec Holdings, Inc.(ATEC)350,000360,000+10,000$3.81M$3.11M0.15%-$694.0K
Novo Nordisk A/SADR(NVO)90,00063,500-26,500$3.31M$3.04M0.15%-$263.3K
Olema Pharmaceuticals, Inc.(OLMA)170,378235,178+64,800$2.54M$2.94M0.14%+$401.7K
NervGen Pharma Corp.(NGEN)01,208,231+1,208,231$0$2.49M0.12%+$2.49M
Medtronic plcSHS(MDT)030,900+30,900$0$2.42M0.12%+$2.42M
Teva Pharmaceutical Industries LimitedADS(TEVA)45,50059,000+13,500$1.37M$2.00M0.10%+$628.5K
Dianthus Therapeutics, Inc.(DNTH)26,75720,326-6,431$2.25M$1.98M0.10%-$264.1K
Sagimet Biosciences Inc.COM SER A(SGMT)0250,000+250,000$0$1.93M0.09%+$1.93M
Capricor Therapeutics, Inc.(CAPR)074,448+74,448$0$1.79M0.09%+$1.79M
LENZ Therapeutics, Inc.(LENZ)257,460257,4600$2.36M$1.46M0.07%-$893.4K
Altimmune, Inc.(ALT)0471,465+471,465$0$1.43M0.07%+$1.43M
Kailera Therapeutics Inc065,000+65,000$0$1.43M0.07%+$1.43M
Surgery Partners, Inc.(SGRY)208,00084,000-124,000$2.48M$1.41M0.07%-$1.07M
Axsome Therapeutics, Inc.(AXSM)05,500+5,500$0$1.35M0.07%+$1.35M
Oruka Therapeutics, Inc.(ORKA)4,12312,051+7,928$202.2K$1.15M0.06%+$944.7K
Viking Therapeutics, Inc.(VKTX)96,00025,500-70,500$3.12M$994.8K0.05%-$2.13M
Legend Biotech CorporationADS(LEGN)40,50033,500-7,000$732.6K$967.5K0.05%+$234.8K
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