Rock Springs Capital Management LP 13F Holdings

CIK 0001595725 · Baltimore, MD

As of Sep 30, 2025, Rock Springs Capital Management LP reported 92 positions worth .7B in its SEC Form 13F filing.

Top 25 holdings

SecurityTickerSectorSharesValue% of portfolio
ARGENX SEARGXHealthcare142,750 05.3M6.15%
ELI LILLY & COLLYHealthcare105,400$80.4M4.70%
RHYTHM PHARMACEUTICALS INCRYTMHealthcare717,102$72.4M4.23%
MADRIGAL PHARMACEUTICALS INCMDGLHealthcare137,746$63.2M3.69%
REVOLUTION MEDICINES INCRVMDHealthcare1,335,270$62.4M3.64%
MERUS NVMRUSHealthcare597,051$56.2M3.28%
MIRUM PHARMACEUTICALS INCMIRMHealthcare761,126$55.8M3.26%
INSMED INCINSMHealthcare385,000$55.4M3.24%
TRAVERE THERAPEUTICS INCTVTXHealthcare2,164,773$51.7M3.02%
ASCENDIS PHARMA AASNDHealthcare214,500$42.6M2.49%
IRHYTHM TECHNOLOGIES INCIRTCHealthcare235,000$40.4M2.36%
AGIOS PHARMACEUTICALS INCAGIOHealthcare958,542$38.5M2.25%
ULTRAGENYX PHARMACEUTICAL INCRAREHealthcare1,246,341$37.5M2.19%
INTUITIVE SURGICAL INCISRGHealthcare82,000$36.7M2.14%
BOSTON SCIENTIFIC CORPBSXHealthcare360,250$35.2M2.05%
XENON PHARMACEUTICALS INCXENEHealthcare851,744$34.2M2.00%
ALNYLAM PHARMACEUTICALS INCALNYHealthcare74,250$33.9M1.98%
EXACT SCIENCES CORPEXASHealthcare593,500$32.5M1.90%
PENUMBRA INCPENHealthcare120,500$30.5M1.78%
AKERO THERAPEUTICS INCAKROHealthcare626,526$29.7M1.74%
SCHOLAR ROCK HOLDING CORPSRRKHealthcare794,133$29.6M1.73%
ZAI LAB LTDZLABHealthcare791,193$26.8M1.57%
STRUCTURE THERAPEUTICS INCGPCRHealthcare951,154$26.6M1.56%
KYMERA THERAPEUTICS INCKYMRHealthcare450,374$25.5M1.49%
TENET HEALTHCARE CORPTHCHealthcare125,000$25.4M1.48%