HoldingsChannel.com
Rock Springs Capital Management LP Top Holdings
As of  12/31/2022, below is a summary of the Rock Springs Capital Management LP top holdings by largest position size, as per the latest 13f filing made by Rock Springs Capital Management LP. In the Rock Springs Capital Management LP-top-holdings-table below, each of the top holdings by name is presented in the first column, followed by the amount of shares held by Rock Springs Capital Management LP in that top holding, then the share count change between reporting periods, and finally the Rock Springs Capital Management LP top holding position size for that row.

   EntityAmountChange
 09/30/2022 to 12/31/2022
Position Size
($ in 1000's)
HUMANA INC 426,500 UNCH $218,449
     HUM426,500UNCH$218,449
IMMUNOCORE HLDGS PLC 3,321,066 -172,677 $189,533
     IMCR3,321,066-172,677$189,533
INSULET CORP 524,250 +5,750 $154,334
     PODD524,250+5,750$154,334
UNITEDHEALTH GROUP INC 270,000 +500 $143,149
     UNH270,000+500$143,149
NEUROCRINE BIOSCIENCES INC      $135,657
     NBIX1,122,500UNCH$134,071
     NOTE 21,000,000UNCH$1,586
ARGENX SE 350,000 UNCH $132,590
     ARGX350,000UNCH$132,590
AGILON HEALTH INC 7,872,500 +125,000 $127,062
     AGL7,872,500+125,000$127,062
PROMETHEUS BIOSCIENCES INC 1,031,550 +386,143 $113,470
     RXDX1,031,550+386,143$113,470
PENUMBRA INC 508,250 +32,250 $113,065
     PEN508,250+32,250$113,065
EVOLENT HEALTH INC 3,803,500 +541,000 $106,802
     EVH3,803,500+541,000$106,802
MADRIGAL PHARMACEUTICALS INC 348,121 +30,636 $101,042
     MDGL348,121+30,636$101,042
IDEXX LABS INC 207,500 -16,815 $84,652
     IDXX207,500-16,815$84,652
HORIZON THERAPEUTICS PUB L 739,700 +12,700 $84,178
     HZNP739,700+12,700$84,178
AGIOS PHARMACEUTICALS INC 2,996,592 -61,277 $84,144
     AGIO2,996,592-61,277$84,144
BLUEPRINT MEDICINES CORP 1,891,510 +353,315 $82,867
     BPMC1,891,510+353,315$82,867
KARUNA THERAPEUTICS INC 413,762 UNCH $81,304
     KRTX413,762UNCH$81,304
INTUITIVE SURGICAL INC 298,500 UNCH $79,207
     ISRG298,500UNCH$79,207
CEREVEL THERAPEUTICS HLDNG I 2,506,464 +7,316 $79,054
     CERE2,506,464+7,316$79,054
ALNYLAM PHARMACEUTICALS INC 332,500 UNCH $79,019
     ALNY332,500UNCH$79,019
AKERO THERAPEUTICS INC 1,400,654 +30,681 $76,756
     AKRO1,400,654+30,681$76,756
ACADIA HEALTHCARE COMPANY IN 845,500 +500 $69,602
     ACHC845,500+500$69,602
ALIGN TECHNOLOGY INC 302,350 -41,650 $63,766
     ALGN302,350-41,650$63,766
ACLARIS THERAPEUTICS INC 3,961,249 UNCH $62,390
     ACRS3,961,249UNCH$62,390
ULTRAGENYX PHARMACEUTICAL IN 1,290,279 +102,287 $59,779
     RARE1,290,279+102,287$59,779
BAXTER INTL INC 1,150,000 +394,500 $58,616
     BAX1,150,000+394,500$58,616
SAREPTA THERAPEUTICS INC 436,000 +6,000 $56,497
     SRPT436,000+6,000$56,497
DEXCOM INC 490,500 UNCH $55,544
     DXCM490,500UNCH$55,544
ASCENDIS PHARMA A S 425,500 UNCH $51,966
     ASND425,500UNCH$51,966
SEAGEN INC 400,200 +128,200 $51,430
     SGEN400,200+128,200$51,430
RHYTHM PHARMACEUTICALS INC 1,760,865 UNCH $51,276
     RYTM1,760,865UNCH$51,276
EDWARDS LIFESCIENCES CORP 645,900 +14,900 $48,191
     EW645,900+14,900$48,191
XENON PHARMACEUTICALS INC 1,175,672 +19,711 $46,357
     XENE1,175,672+19,711$46,357
AMYLYX PHARMACEUTICALS INC 1,229,637 +825,900 $45,435
     AMLX1,229,637+825,900$45,435
PROTHENA CORP PLC 753,462 +75,000 $45,396
     PRTA753,462+75,000$45,396
EXACT SCIENCES CORP 887,500 +308,900 $43,940
     EXAS887,500+308,900$43,940
WEST PHARMACEUTICAL SVSC INC 185,500 +5,000 $43,657
     WST185,500+5,000$43,657
NEVRO CORP      $43,144
     NVRO1,077,900+290,900$42,685
     NOTE 2500,000UNCH$459
PHREESIA INC 1,302,500 UNCH $42,149
     PHR1,302,500UNCH$42,149
PACIRA BIOSCIENCES INC 1,032,600 +15,100 $39,869
     PCRX1,032,600+15,100$39,869
OLINK HLDG AB 1,445,000 UNCH $36,674
     OLK1,445,000UNCH$36,674
MIRATI THERAPEUTICS INC 805,024 -61,752 $36,476
     MRTX805,024-61,752$36,476
MIRUM PHARMACEUTICALS INC 1,795,733 UNCH $35,017
     MIRM1,795,733UNCH$35,017
FRESHPET INC 657,000 -43,000 $34,670
     FRPT657,000-43,000$34,670
ABCAM PLC 2,180,000 +147,500 $33,921
     ABCM2,180,000+147,500$33,921
ZAI LAB LTD 1,059,700 -132,700 $32,533
     ZLAB1,059,700-132,700$32,533
KYMERA THERAPEUTICS INC 1,227,779 +181,036 $30,645
     KYMR1,227,779+181,036$30,645
IRHYTHM TECHNOLOGIES INC 309,450 +16,200 $28,986
     IRTC309,450+16,200$28,986
BIOMARIN PHARMACEUTICAL INC 264,500 UNCH $27,373
     BMRN264,500UNCH$27,373
SELECT SECTOR SPDR TR (XLV) 200,000 UNCH $27,170
     XLV200,000UNCH$27,170
COMPASS THERAPEUTICS INC 5,333,188 UNCH $26,826
     CMPX5,333,188UNCH$26,826

See Full List: All Stocks Held By Rock Springs Capital Management LP
— Including:
     • Biggest new positions
     • Biggest exits
     • Biggest increased positions
     • Biggest decreased positions

See Details: Top 10 Stocks Held By Rock Springs Capital Management LP

Size ($ in 1000's)
At 12/31/2022: $4,155,903
At 09/30/2022: $3,871,568

Rock Springs Capital Management LP holdings changes, total fund size, and other information presented on HoldingsChannel.com was derived from Rock Springs Capital Management LP 13F filings. Link to 13F filings: SEC filings

Rock Springs Capital Management LP Top Holdings 13F Filings | www.HoldingsChannel.com

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