Rock Springs Capital Management LP - Q1 2022 holdings

$3.97 Billion is the total value of Rock Springs Capital Management LP's 135 reported holdings in Q1 2022. The portfolio turnover from Q4 2021 to Q1 2022 was 8.1% .

 Value Shares↓ Weighting
AGL BuyAGILON HEALTH INC$193,674,000
-4.3%
7,640,000
+1.9%
4.88%
+4.3%
HUM BuyHUMANA INC$160,404,000
-0.9%
368,600
+5.6%
4.04%
+8.0%
PODD BuyINSULET CORP$128,320,000
+4.0%
481,700
+3.9%
3.23%
+13.3%
UNH  UNITEDHEALTH GROUP INC$122,393,000
+1.6%
240,0000.0%3.08%
+10.7%
IDXX BuyIDEXX LABS INC$119,669,000
+1.0%
218,750
+21.5%
3.01%
+10.0%
ARGX BuyARGENX SEsponsored adr$110,359,000
+0.0%
350,000
+11.1%
2.78%
+9.0%
NBIX  NEUROCRINE BIOSCIENCES INC$103,594,000
+10.1%
1,105,0000.0%2.61%
+20.0%
ALGN BuyALIGN TECHNOLOGY INC$94,394,000
-28.2%
216,500
+8.2%
2.38%
-21.8%
HCA SellHCA HEALTHCARE INC$93,983,000
-18.7%
375,000
-16.7%
2.37%
-11.4%
ISRG SellINTUITIVE SURGICAL INC$90,051,000
-30.4%
298,500
-17.1%
2.27%
-24.1%
HZNP  HORIZON THERAPEUTICS PUB L$78,487,000
-2.4%
746,0000.0%1.98%
+6.4%
AGIO BuyAGIOS PHARMACEUTICALS INC$77,586,000
-10.8%
2,665,275
+0.7%
1.95%
-2.8%
EVH BuyEVOLENT HEALTH INCcl a$76,874,000
+36.3%
2,380,000
+16.8%
1.94%
+48.5%
PCRX  PACIRA BIOSCIENCES INC$76,320,000
+26.8%
1,000,0000.0%1.92%
+38.2%
IMCR BuyIMMUNOCORE HLDGS PLCads$76,306,000
-9.8%
2,552,034
+3.3%
1.92%
-1.7%
RARE BuyULTRAGENYX PHARMACEUTICAL IN$74,661,000
+0.4%
1,028,109
+16.3%
1.88%
+9.4%
EW BuyEDWARDS LIFESCIENCES CORP$70,220,000
-6.9%
596,500
+2.5%
1.77%
+1.5%
IRTC BuyIRHYTHM TECHNOLOGIES INC$68,657,000
+34.7%
436,000
+0.7%
1.73%
+46.8%
ACRS BuyACLARIS THERAPEUTICS INC$66,633,000
+18.7%
3,865,034
+0.1%
1.68%
+29.3%
FRPT BuyFRESHPET INC$60,814,000
+10.1%
592,500
+2.2%
1.53%
+19.9%
BPMC BuyBLUEPRINT MEDICINES CORP$60,540,000
-34.3%
947,715
+10.2%
1.52%
-28.4%
CERE BuyCEREVEL THERAPEUTICS HLDNG I$60,334,000
+12.9%
1,723,341
+4.5%
1.52%
+23.0%
BAX BuyBAXTER INTL INC$58,209,000
-7.6%
750,700
+2.3%
1.46%
+0.7%
SWAV BuySHOCKWAVE MED INC$56,298,000
+41.9%
271,500
+22.0%
1.42%
+54.5%
KRTX BuyKARUNA THERAPEUTICS INC$54,842,000
-1.9%
432,543
+1.3%
1.38%
+6.9%
ALNY  ALNYLAM PHARMACEUTICALS INC$54,294,000
-3.7%
332,5000.0%1.37%
+4.9%
DXCM BuyDEXCOM INC$53,206,000
+74.6%
104,000
+83.3%
1.34%
+90.2%
ZLAB BuyZAI LAB LTDadr$53,035,000
-28.5%
1,205,900
+2.1%
1.34%
-22.1%
NVRO BuyNEVRO CORP$52,186,000
-9.8%
721,500
+1.1%
1.31%
-1.7%
ACHC BuyACADIA HEALTHCARE COMPANY IN$49,377,000
+8.7%
753,500
+0.7%
1.24%
+18.4%
ASND BuyASCENDIS PHARMA A/Ssponsored adr$48,998,000
-8.9%
417,500
+4.4%
1.23%
-0.8%
MRTX BuyMIRATI THERAPEUTICS INC$46,021,000
-23.6%
559,734
+36.4%
1.16%
-16.8%
PEN BuyPENUMBRA INC$45,426,000
+6.5%
204,500
+37.7%
1.14%
+15.9%
EXAS  EXACT SCIENCES CORP$39,854,000
-10.2%
570,0000.0%1.00%
-2.1%
SGEN BuySEAGEN INC$38,966,000
-1.5%
270,500
+5.7%
0.98%
+7.3%
SRRA SellSIERRA ONCOLOGY INC$37,652,000
+46.2%
1,174,786
-0.8%
0.95%
+59.3%
MIRM BuyMIRUM PHARMACEUTICALS INC$36,690,000
+49.5%
1,666,208
+8.3%
0.92%
+63.0%
EHC  ENCOMPASS HEALTH CORP$35,733,000
+9.0%
502,5000.0%0.90%
+18.6%
BuyWARBY PARKER INC$35,112,000
+4.2%
1,038,500
+43.4%
0.88%
+13.5%
SRPT BuySAREPTA THERAPEUTICS INC$33,435,000
-12.4%
428,000
+0.9%
0.84%
-4.5%
NVAX BuyNOVAVAX INC$33,010,000
-45.7%
448,200
+5.5%
0.83%
-40.9%
KYMR BuyKYMERA THERAPEUTICS INC$31,989,000
-32.1%
755,875
+1.9%
0.80%
-26.1%
ARVN BuyARVINAS INC$30,796,000
-18.0%
457,600
+0.1%
0.78%
-10.7%
CNMD  CONMED CORP$30,081,000
+4.8%
202,5000.0%0.76%
+14.2%
 CYTOKINETICS INCnote 4.000%11/1$29,275,000
-17.9%
8,000,0000.0%0.74%
-10.6%
WST BuyWEST PHARMACEUTICAL SVSC INC$28,442,000
+33.3%
69,250
+52.2%
0.72%
+45.2%
CVET BuyCOVETRUS INC$28,123,000
-15.3%
1,675,000
+0.8%
0.71%
-7.7%
MDGL BuyMADRIGAL PHARMACEUTICALS INC$26,836,000
+17.6%
273,500
+1.5%
0.68%
+28.3%
NVTA BuyINVITAE CORP$26,491,000
-38.0%
3,323,821
+18.7%
0.67%
-32.5%
ACCD BuyACCOLADE INC$26,428,000
-16.2%
1,505,000
+25.7%
0.66%
-8.8%
ABCM BuyABCAM PLCads$26,208,000
-11.1%
1,432,900
+14.4%
0.66%
-3.1%
XENE BuyXENON PHARMACEUTICALS INC$25,755,000
+6.9%
842,498
+9.2%
0.65%
+16.3%
PHR BuyPHREESIA INC$25,042,000
-21.9%
950,000
+23.4%
0.63%
-15.0%
TVTX  TRAVERE THERAPEUTICS INC$24,524,000
-17.0%
951,6500.0%0.62%
-9.5%
PRTA BuyPROTHENA CORP PLC$24,265,000
-24.2%
663,530
+2.4%
0.61%
-17.3%
HCAT BuyHEALTH CATALYST INC$23,870,000
-29.1%
913,500
+7.4%
0.60%
-22.8%
RXDX BuyPROMETHEUS BIOSCIENCES INC$23,574,000
-3.6%
624,307
+1.0%
0.59%
+5.0%
 AURA BIOSCIENCES INC$22,179,000
+29.6%
1,008,1140.0%0.56%
+41.3%
BMRN BuyBIOMARIN PHARMACEUTICAL INC$20,393,000
-12.6%
264,500
+0.2%
0.51%
-4.8%
LFST  LIFESTANCE HEALTH GROUP INC$20,220,000
+6.2%
2,000,0000.0%0.51%
+15.7%
NewCINCOR PHARMA INC$18,087,0001,031,159
+100.0%
0.46%
RLAY BuyRELAY THERAPEUTICS INC$18,008,000
-1.9%
601,667
+0.7%
0.45%
+6.8%
LUNG BuyPULMONX CORP$17,427,000
-22.4%
702,400
+0.3%
0.44%
-15.4%
OLK BuyOLINK HLDG ABsponsored ads$17,413,000
+85.8%
986,000
+91.5%
0.44%
+101.8%
DVAX BuyDYNAVAX TECHNOLOGIES CORP$17,245,000
-22.3%
1,590,894
+0.9%
0.43%
-15.4%
XENT SellINTERSECT ENT INC$15,406,000
-40.0%
550,000
-41.5%
0.39%
-34.6%
MRSN BuyMERSANA THERAPEUTICS INC$14,986,000
-25.8%
3,755,820
+15.6%
0.38%
-19.3%
LEGN BuyLEGEND BIOTECH CORPsponsored ads$14,942,000
-20.6%
411,184
+1.9%
0.38%
-13.6%
COLL  COLLEGIUM PHARMACEUTICAL INC$14,761,000
+9.0%
725,0000.0%0.37%
+18.8%
RIGL BuyRIGEL PHARMACEUTICALS INC$14,715,000
+14.2%
4,921,487
+1.3%
0.37%
+24.2%
AMRN  AMARIN CORP PLCspons adr new$14,541,000
-2.4%
4,419,7000.0%0.37%
+6.4%
NVCR  NOVOCURE LTD$14,499,000
+10.4%
175,0000.0%0.36%
+20.1%
RYTM BuyRHYTHM PHARMACEUTICALS INC$14,251,000
+127.7%
1,237,026
+97.2%
0.36%
+147.6%
ANAB BuyANAPTYSBIO INC$13,936,000
-25.6%
563,300
+4.6%
0.35%
-18.9%
GH  GUARDANT HEALTH INC$13,248,000
-33.8%
200,0000.0%0.33%
-27.9%
NewAMYLYX PHARMACEUTICALS INC$12,828,000998,307
+100.0%
0.32%
VERV SellVERVE THERAPEUTICS INC$11,502,000
-65.5%
504,037
-44.2%
0.29%
-62.3%
KDNY SellCHINOOK THERAPEUTICS INC$11,458,000
-2.5%
700,349
-2.8%
0.29%
+6.3%
AMYT  AMRYT PHARMA PLCsponsored ads$10,799,000
-23.4%
1,305,8250.0%0.27%
-16.6%
FULC SellFULCRUM THERAPEUTICS INC$10,278,000
+27.1%
434,590
-4.9%
0.26%
+38.5%
OHPAU  ORION ACQUISITION CORPunit 02/19/2026$9,820,000
-0.3%
1,000,0000.0%0.25%
+8.3%
FOLD  AMICUS THERAPEUTICS INC$9,588,000
-18.0%
1,012,5060.0%0.24%
-10.7%
AUPH BuyAURINIA PHARMACEUTICALS INC$9,545,000
-8.7%
771,018
+68.6%
0.24%
-0.8%
GRPH SellGRAPHITE BIO INC$9,133,000
-64.7%
1,790,754
-13.9%
0.23%
-61.5%
AKRO BuyAKERO THERAPEUTICS INC$9,014,000
-27.4%
635,214
+8.2%
0.23%
-20.9%
GMDA  GAMIDA CELL LTD$8,940,000
+63.4%
2,154,3000.0%0.22%
+78.6%
SPRO BuySPERO THERAPEUTICS INC$8,621,000
-43.0%
990,913
+4.8%
0.22%
-38.0%
 XILIO THERAPEUTICS INC$8,421,000
-55.8%
1,191,0940.0%0.21%
-51.8%
EPZM BuyEPIZYME INC$8,358,000
-12.2%
7,267,696
+90.9%
0.21%
-4.5%
MGNX BuyMACROGENICS INC$8,217,000
-40.3%
932,728
+8.8%
0.21%
-34.9%
SellGOSSAMER BIO INCnote 5.000% 6/0$7,692,000
-48.9%
9,573,000
-37.7%
0.19%
-44.3%
ATHA  ATHIRA PHARMA INC$7,455,000
+3.6%
552,2520.0%0.19%
+13.3%
FUSN  FUSION PHARMACEUTICALS INC$7,369,000
+86.3%
948,3270.0%0.18%
+103.3%
CMPX  COMPASS THERAPEUTICS INC$7,299,000
-56.8%
5,328,0880.0%0.18%
-52.8%
CGEM BuyCULLINAN ONCOLOGY INC$6,832,000
-31.5%
652,578
+1.0%
0.17%
-25.2%
MREO BuyMEREO BIOPHARMA GROUP PLCads$6,804,000
-23.9%
6,074,943
+8.8%
0.17%
-17.0%
LPTX BuyLEAP THERAPEUTICS INC$6,292,000
-44.8%
3,595,447
+2.1%
0.16%
-40.2%
EDAP BuyEDAP TMS S Asponsored adr$5,945,000
+30.4%
820,000
+7.8%
0.15%
+42.9%
NKTX BuyNKARTA INC$5,803,000
-25.5%
509,948
+0.5%
0.15%
-18.9%
DSGN BuyDESIGN THERAPEUTICS INC$5,581,000
-22.2%
345,597
+3.1%
0.14%
-15.7%
BuyICOSAVAX INC$5,361,000
-68.1%
761,557
+3.5%
0.14%
-65.3%
BMEA  BIOMEA FUSION INC$5,198,000
-40.1%
1,165,5820.0%0.13%
-34.8%
PRTK BuyPARATEK PHARMACEUTICALS INC$5,128,000
-32.7%
1,726,637
+1.7%
0.13%
-26.7%
 THESEUS PHARMACEUTICALS INC$5,042,000
-9.1%
437,3290.0%0.13%
-0.8%
INZY BuyINOZYME PHARMA INC$4,880,000
-17.6%
1,193,195
+37.4%
0.12%
-10.2%
ADAP BuyADAPTIMMUNE THERAPEUTICS PLCsponds adr$4,732,000
-43.0%
2,297,194
+3.7%
0.12%
-38.0%
FATE  FATE THERAPEUTICS INC$4,265,000
-33.7%
110,0000.0%0.11%
-28.2%
CGEN  COMPUGEN LTDord$4,154,000
-25.1%
1,289,9900.0%0.10%
-18.0%
AGLE BuyAEGLEA BIOTHERAPEUTICS INC$4,166,000
-44.4%
1,811,425
+14.8%
0.10%
-39.3%
NewEQRX INC$4,130,0001,000,000
+100.0%
0.10%
KNTE BuyKINNATE BIOPHARMA INC$3,875,000
-35.7%
344,146
+1.3%
0.10%
-29.5%
PHAS BuyPHASEBIO PHARMACEUTICALS INC$3,450,000
-48.8%
2,613,825
+1.3%
0.09%
-44.2%
RPHM  RENEO PHARMACEUTICALS INC$3,361,000
-65.6%
1,143,1850.0%0.08%
-62.4%
 TRAVERE THERAPEUTICS INCnote 2.500% 9/1$3,396,000
-5.4%
3,250,0000.0%0.08%
+2.4%
NewVIGIL NEUROSCIENCE INC$3,318,000471,958
+100.0%
0.08%
CLDX NewCELLDEX THERAPEUTICS INC NEW$3,315,00097,317
+100.0%
0.08%
VINC BuyVINCERX PHARMA INC$3,257,000
-60.5%
814,194
+0.6%
0.08%
-57.1%
EPIX BuyESSA PHARMA INC$3,244,000
-55.3%
524,944
+2.7%
0.08%
-51.2%
SPRB  SPRUCE BIOSCIENCES INC$3,262,000
-54.9%
1,622,6890.0%0.08%
-50.9%
BLSA  BCLS ACQUISITION CORP$3,050,000
+0.7%
309,0000.0%0.08%
+10.0%
TPST  TEMPEST THERAPEUTICS INC$2,784,000
-36.0%
823,6540.0%0.07%
-30.0%
FSTX  F-STAR THERAPEUTICS INC$2,669,000
-29.3%
751,8890.0%0.07%
-23.0%
PRLD  PRELUDE THERAPEUTICS INC$2,546,000
-44.6%
368,9590.0%0.06%
-39.6%
JYAC  JIYA ACQUISITION CORP$2,027,000
+0.6%
206,2000.0%0.05%
+8.5%
ACRX BuyACELRX PHARMACEUTICALS INC$1,807,000
-49.0%
6,329,202
+0.1%
0.04%
-45.1%
IMRA BuyIMARA INC$1,584,000
-16.4%
842,402
+0.0%
0.04%
-9.1%
 RADIUS HEALTH INCnote 3.000% 9/0$1,478,000
+1.3%
1,500,0000.0%0.04%
+8.8%
BCEL  ATRECA INC$1,466,000
+4.6%
462,5300.0%0.04%
+15.6%
APLT  APPLIED THERAPEUTICS INC$1,481,000
-76.4%
701,6800.0%0.04%
-74.5%
 THERAVANCE BIOPHARMA INCnote 3.250%11/0$1,420,000
-2.5%
1,500,0000.0%0.04%
+5.9%
STTK  SHATTUCK LABS INC$1,336,000
-49.9%
313,4990.0%0.03%
-45.2%
PSTX  POSEIDA THERAPEUTICS INC$1,298,000
-34.2%
289,7540.0%0.03%
-28.3%
 NEUROCRINE BIOSCIENCES INCnote 2.250% 5/1$1,320,000
+5.0%
1,000,0000.0%0.03%
+13.8%
 NEVRO CORPnote 2.750% 4/0$541,000
-2.7%
500,0000.0%0.01%
+7.7%
NUVBWS  NUVATION BIO INC*w exp 07/07/202$108,000
-57.3%
134,0280.0%0.00%
-50.0%
ExitPACIRA BIOSCIENCES INCnote 2.375% 4/0$0-1,000,000
-100.0%
-0.02%
DAWN ExitDAY ONE BIOPHARMACEUTICALS I$0-381,939
-100.0%
-0.15%
NRIX ExitNURIX THERAPEUTICS INC$0-321,050
-100.0%
-0.22%
ABOS ExitACUMEN PHARMACEUTICALS INC$0-1,571,918
-100.0%
-0.25%
ExitAADI BIOSCIENCE INC$0-538,835
-100.0%
-0.30%
ExitIMMUNEERING CORP$0-1,089,816
-100.0%
-0.41%
Original filings

The following EDGAR filing(s) were analyzed to create this report:

  • View 13F-HR filed 2022-05-16
Signatures

The EDGAR filing(s) were signed by:

Top long-term holdings
NameQuarters ownedLatest quarter ownedMax weighting
INTUITIVE SURGICAL INC40Q3 20233.4%
NEUROCRINE BIOSCIENCES INC39Q3 20234.8%
PACIRA PHARMACEUTICALS INC39Q3 20232.6%
ULTRAGENYX PHARMACEUTICAL IN39Q3 20231.9%
ACADIA HEALTHCARE COMPANY IN38Q3 20234.4%
ASCENDIS PHARMA A/S35Q3 20231.3%
INVITAE CORP35Q3 20231.8%
BIOMARIN PHARMACEUTICAL INC35Q3 20231.3%
MACROGENICS INC35Q3 20230.5%
COLLEGIUM PHARMACEUTICAL INC34Q3 20232.1%

View Rock Springs Capital Management LP's complete holdings history.

Latest significant ownerships (13-D/G)
Rock Springs Capital Management LP Q1 2022 significant holdings filed using form 13D/G when ownership exceeds 5% of a company's total stock issue.
FiledShares Percentage
Aeglea BioTherapeutics, Inc.February 14, 20233,413,9065.6%
Compass Therapeutics, Inc.February 14, 20235,333,1884.2%
Mirum Pharmaceuticals, Inc.February 14, 20231,795,7334.9%
PhaseBio Pharmaceuticals IncSold outFebruary 14, 202300.0%
Sierra Oncology, Inc.Sold outFebruary 14, 202300.0%
ARDELYX, INC.Sold outFebruary 15, 202200.0%
CHIASMA, INCSold outFebruary 15, 202200.0%
FIVE PRIME THERAPEUTICS, INC.Sold outFebruary 15, 202200.0%
F-star Therapeutics, Inc.February 15, 2022751,8893.6%
Protara Therapeutics, Inc.Sold outFebruary 15, 202200.0%

View Rock Springs Capital Management LP's complete significant-ownership history.

Latest filings
TypeFiled
SC 13G/A2024-04-05
13F-HR2024-02-14
SC 13G/A2024-02-14
SC 13G/A2024-02-14
SC 13G/A2024-02-14
SC 13G/A2024-02-14
SC 13G/A2024-02-14
SC 13G/A2024-02-14
SC 13G/A2024-02-14
SC 13G/A2024-02-14

View Rock Springs Capital Management LP's complete filings history.

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