Rock Springs Capital Management LP - Q2 2022 holdings

$3.44 Billion is the total value of Rock Springs Capital Management LP's 131 reported holdings in Q2 2022. The portfolio turnover from Q1 2022 to Q2 2022 was 13.3% .

 Value Shares↓ Weighting
HUM BuyHUMANA INC$199,565,000
+24.4%
426,358
+15.7%
5.81%
+43.8%
AGL BuyAGILON HEALTH INC$167,676,000
-13.4%
7,681,000
+0.5%
4.88%
+0.1%
UNH BuyUNITEDHEALTH GROUP INC$137,910,000
+12.7%
268,500
+11.9%
4.01%
+30.3%
ARGX  ARGENX SEsponsored adr$132,608,000
+20.2%
350,0000.0%3.86%
+38.9%
NBIX BuyNEUROCRINE BIOSCIENCES INC$109,421,000
+5.6%
1,122,500
+1.6%
3.18%
+22.1%
PODD BuyINSULET CORP$109,406,000
-14.7%
502,000
+4.2%
3.18%
-1.4%
IMCR BuyIMMUNOCORE HLDGS PLCads$99,679,000
+30.6%
2,671,652
+4.7%
2.90%
+51.0%
EVH BuyEVOLENT HEALTH INCcl a$84,084,000
+9.4%
2,738,000
+15.0%
2.45%
+26.5%
ALGN BuyALIGN TECHNOLOGY INC$83,900,000
-11.1%
354,500
+63.7%
2.44%
+2.8%
IDXX BuyIDEXX LABS INC$78,476,000
-34.4%
223,750
+2.3%
2.28%
-24.2%
RARE BuyULTRAGENYX PHARMACEUTICAL IN$65,210,000
-12.7%
1,093,030
+6.3%
1.90%
+1.0%
AGIO BuyAGIOS PHARMACEUTICALS INC$64,924,000
-16.3%
2,928,458
+9.9%
1.89%
-3.3%
SRRA  SIERRA ONCOLOGY INC$64,601,000
+71.6%
1,174,7860.0%1.88%
+98.3%
ISRG  INTUITIVE SURGICAL INC$59,912,000
-33.5%
298,5000.0%1.74%
-23.1%
HZNP  HORIZON THERAPEUTICS PUB L$59,501,000
-24.2%
746,0000.0%1.73%
-12.3%
PCRX BuyPACIRA BIOSCIENCES INC$59,320,000
-22.3%
1,017,500
+1.8%
1.73%
-10.2%
EW BuyEDWARDS LIFESCIENCES CORP$57,244,000
-18.5%
602,000
+0.9%
1.67%
-5.8%
MRTX BuyMIRATI THERAPEUTICS INC$56,723,000
+23.3%
844,977
+51.0%
1.65%
+42.6%
KRTX BuyKARUNA THERAPEUTICS INC$55,904,000
+1.9%
441,893
+2.2%
1.63%
+17.8%
ACRS BuyACLARIS THERAPEUTICS INC$54,823,000
-17.7%
3,927,149
+1.6%
1.60%
-4.8%
ACHC  ACADIA HEALTHCARE COMPANY IN$50,959,000
+3.2%
753,5000.0%1.48%
+19.3%
PEN BuyPENUMBRA INC$49,995,000
+10.1%
401,500
+96.3%
1.46%
+27.3%
BPMC BuyBLUEPRINT MEDICINES CORP$49,458,000
-18.3%
979,174
+3.3%
1.44%
-5.6%
ALNY  ALNYLAM PHARMACEUTICALS INC$48,495,000
-10.7%
332,5000.0%1.41%
+3.2%
SGEN BuySEAGEN INC$48,128,000
+23.5%
272,000
+0.6%
1.40%
+42.8%
CERE BuyCEREVEL THERAPEUTICS HLDNG I$46,723,000
-22.6%
1,767,141
+2.5%
1.36%
-10.5%
SWAV SellSHOCKWAVE MED INC$45,976,000
-18.3%
240,500
-11.4%
1.34%
-5.6%
BAX SellBAXTER INTL INC$45,064,000
-22.6%
701,600
-6.5%
1.31%
-10.5%
ZLAB BuyZAI LAB LTDadr$42,167,000
-20.5%
1,215,900
+0.8%
1.23%
-8.1%
ASND BuyASCENDIS PHARMA A/Ssponsored adr$39,554,000
-19.3%
425,500
+1.9%
1.15%
-6.7%
DXCM BuyDEXCOM INC$35,238,000
-33.8%
472,800
+354.6%
1.03%
-23.4%
CVET BuyCOVETRUS INC$34,835,000
+23.9%
1,678,800
+0.2%
1.01%
+43.2%
XENE BuyXENON PHARMACEUTICALS INC$34,180,000
+32.7%
1,123,604
+33.4%
1.00%
+53.5%
NVRO BuyNEVRO CORP$33,894,000
-35.1%
773,300
+7.2%
0.99%
-25.0%
WST BuyWEST PHARMACEUTICAL SVSC INC$33,563,000
+18.0%
111,000
+60.3%
0.98%
+36.5%
MIRM BuyMIRUM PHARMACEUTICALS INC$33,427,000
-8.9%
1,717,733
+3.1%
0.97%
+5.3%
FRPT BuyFRESHPET INC$33,085,000
-45.6%
637,600
+7.6%
0.96%
-37.1%
PHR BuyPHREESIA INC$32,468,000
+29.7%
1,298,200
+36.7%
0.94%
+50.0%
SRPT  SAREPTA THERAPEUTICS INC$32,083,000
-4.0%
428,0000.0%0.93%
+10.9%
IRTC SellIRHYTHM TECHNOLOGIES INC$29,168,000
-57.5%
270,000
-38.1%
0.85%
-50.9%
XLV NewSELECT SECTOR SPDR TRsbi healthcare$25,648,000200,000
+100.0%
0.75%
NVAX BuyNOVAVAX INC$24,434,000
-26.0%
475,100
+6.0%
0.71%
-14.4%
ABCM BuyABCAM PLCads$23,432,000
-10.6%
1,620,500
+13.1%
0.68%
+3.3%
TVTX  TRAVERE THERAPEUTICS INC$23,058,000
-6.0%
951,6500.0%0.67%
+8.8%
MDGL BuyMADRIGAL PHARMACEUTICALS INC$22,726,000
-15.3%
317,485
+16.1%
0.66%
-2.2%
EXAS BuyEXACT SCIENCES CORP$22,559,000
-43.4%
572,700
+0.5%
0.66%
-34.5%
BMRN  BIOMARIN PHARMACEUTICAL INC$21,919,000
+7.5%
264,5000.0%0.64%
+24.4%
CNMD BuyCONMED CORP$21,354,000
-29.0%
223,000
+10.1%
0.62%
-18.0%
DVAX BuyDYNAVAX TECHNOLOGIES CORP$21,170,000
+22.8%
1,681,458
+5.7%
0.62%
+41.9%
TPTX NewTURNING POINT THERAPEUTICS I$20,452,000271,787
+100.0%
0.60%
LEGN SellLEGEND BIOTECH CORPsponsored ads$19,556,000
+30.9%
355,567
-13.5%
0.57%
+51.3%
SellCINCOR PHARMA INC$19,239,000
+6.4%
1,021,159
-1.0%
0.56%
+23.1%
MRSN BuyMERSANA THERAPEUTICS INC$18,831,000
+25.7%
4,075,958
+8.5%
0.55%
+45.4%
SellAMYLYX PHARMACEUTICALS INC$18,761,000
+46.3%
974,107
-2.4%
0.55%
+69.0%
OLK BuyOLINK HLDG ABsponsored ads$18,723,000
+7.5%
1,231,800
+24.9%
0.54%
+24.4%
PRTA BuyPROTHENA CORP PLC$18,420,000
-24.1%
678,462
+2.3%
0.54%
-12.3%
RXDX BuyPROMETHEUS BIOSCIENCES INC$18,194,000
-22.8%
644,507
+3.2%
0.53%
-10.8%
ACCD BuyACCOLADE INC$16,280,000
-38.4%
2,200,000
+46.2%
0.47%
-28.7%
CYTK NewCYTOKINETICS INC$15,716,000400,000
+100.0%
0.46%
BCRX NewBIOCRYST PHARMACEUTICALS INC$15,458,0001,461,091
+100.0%
0.45%
KYMR BuyKYMERA THERAPEUTICS INC$15,277,000
-52.2%
775,879
+2.6%
0.44%
-44.7%
BuyWARBY PARKER INC$14,340,000
-59.2%
1,273,500
+22.6%
0.42%
-52.8%
BuyAURA BIOSCIENCES INC$14,295,000
-35.5%
1,008,814
+0.1%
0.42%
-25.4%
CMPX  COMPASS THERAPEUTICS INC$14,119,000
+93.4%
5,328,0880.0%0.41%
+123.4%
HCAT BuyHEALTH CATALYST INC$13,699,000
-42.6%
945,400
+3.5%
0.40%
-33.6%
BMEA SellBIOMEA FUSION INC$13,007,000
+150.2%
1,085,740
-6.8%
0.38%
+189.3%
COLL  COLLEGIUM PHARMACEUTICAL INC$12,847,000
-13.0%
725,0000.0%0.37%
+0.5%
INZY BuyINOZYME PHARMA INC$12,593,000
+158.1%
2,640,056
+121.3%
0.37%
+197.6%
NVCR  NOVOCURE LTD$12,163,000
-16.1%
175,0000.0%0.35%
-3.0%
ARVN SellARVINAS INC$11,789,000
-61.7%
280,100
-38.8%
0.34%
-55.7%
BRKS NewAZENTA INC$11,680,000162,000
+100.0%
0.34%
ANAB BuyANAPTYSBIO INC$11,618,000
-16.6%
572,300
+1.6%
0.34%
-3.7%
LFST  LIFESTANCE HEALTH GROUP INC$11,120,000
-45.0%
2,000,0000.0%0.32%
-36.3%
EPZM BuyEPIZYME INC$11,004,000
+31.7%
7,485,543
+3.0%
0.32%
+52.4%
FOLD  AMICUS THERAPEUTICS INC$10,874,000
+13.4%
1,012,5060.0%0.32%
+31.1%
LUNG  PULMONX CORP$10,339,000
-40.7%
702,4000.0%0.30%
-31.4%
RLAY BuyRELAY THERAPEUTICS INC$10,356,000
-42.5%
618,267
+2.8%
0.30%
-33.6%
IMTX NewIMMATICS N.V$9,825,0001,127,970
+100.0%
0.29%
OHPAU  ORION ACQUISITION CORPunit 02/19/2026$9,810,000
-0.1%
1,000,0000.0%0.28%
+15.4%
AMYT BuyAMRYT PHARMA PLCsponsored ads$9,175,000
-15.0%
1,312,625
+0.5%
0.27%
-1.8%
CLDX BuyCELLDEX THERAPEUTICS INC NEW$9,044,000
+172.8%
335,477
+244.7%
0.26%
+216.9%
KDNY SellCHINOOK THERAPEUTICS INC$8,876,000
-22.5%
507,512
-27.5%
0.26%
-10.4%
NVTA BuyINVITAE CORP$8,527,000
-67.8%
3,494,721
+5.1%
0.25%
-62.8%
AUPH BuyAURINIA PHARMACEUTICALS INC$8,192,000
-14.2%
815,126
+5.7%
0.24%
-0.8%
GH  GUARDANT HEALTH INC$8,068,000
-39.1%
200,0000.0%0.24%
-29.4%
KNTE BuyKINNATE BIOPHARMA INC$7,798,000
+101.2%
618,384
+79.7%
0.23%
+131.6%
VERV  VERVE THERAPEUTICS INC$7,702,000
-33.0%
504,0370.0%0.22%
-22.8%
NKTX BuyNKARTA INC$7,593,000
+30.8%
616,277
+20.9%
0.22%
+51.4%
 GOSSAMER BIO INCnote 5.000% 6/0$7,156,000
-7.0%
9,573,0000.0%0.21%
+7.2%
MREO BuyMEREO BIOPHARMA GROUP PLCads$6,978,000
+2.6%
6,230,275
+2.6%
0.20%
+18.7%
DSGN BuyDESIGN THERAPEUTICS INC$6,445,000
+15.5%
460,391
+33.2%
0.19%
+34.3%
AKRO BuyAKERO THERAPEUTICS INC$6,421,000
-28.8%
679,514
+7.0%
0.19%
-17.6%
EDAP BuyEDAP TMS S Asponsored adr$6,188,000
+4.1%
910,000
+11.0%
0.18%
+20.0%
RYTM BuyRHYTHM PHARMACEUTICALS INC$5,824,000
-59.1%
1,403,298
+13.4%
0.17%
-52.9%
FSTX  F-STAR THERAPEUTICS INC$4,707,000
+76.4%
751,8890.0%0.14%
+104.5%
 EQRX INC$4,690,000
+13.6%
1,000,0000.0%0.14%
+30.8%
 ICOSAVAX INC$4,364,000
-18.6%
761,5570.0%0.13%
-5.9%
BEAM NewBEAM THERAPEUTICS INC$4,313,000111,430
+100.0%
0.13%
LPTX BuyLEAP THERAPEUTICS INC$4,201,000
-33.2%
3,652,947
+1.6%
0.12%
-22.8%
ADAP BuyADAPTIMMUNE THERAPEUTICS PLCsponds adr$4,008,000
-15.3%
2,357,544
+2.6%
0.12%
-1.7%
BuyXILIO THERAPEUTICS INC$3,980,000
-52.7%
1,362,878
+14.4%
0.12%
-45.3%
GMDA BuyGAMIDA CELL LTD$3,850,000
-56.9%
2,175,000
+1.0%
0.11%
-50.2%
PRTK BuyPARATEK PHARMACEUTICALS INC$3,347,000
-34.7%
1,734,037
+0.4%
0.10%
-24.8%
 TRAVERE THERAPEUTICS INCnote 2.500% 9/1$3,221,000
-5.2%
3,250,0000.0%0.09%
+10.6%
BLSA  BCLS ACQUISITION CORP$3,059,000
+0.3%
309,0000.0%0.09%
+15.6%
RPHM  RENEO PHARMACEUTICALS INC$3,029,000
-9.9%
1,143,1850.0%0.09%
+3.5%
MGNX BuyMACROGENICS INC$2,816,000
-65.7%
954,728
+2.4%
0.08%
-60.4%
SPRB  SPRUCE BIOSCIENCES INC$2,823,000
-13.5%
1,622,6890.0%0.08%0.0%
FATE  FATE THERAPEUTICS INC$2,726,000
-36.1%
110,0000.0%0.08%
-26.2%
 THESEUS PHARMACEUTICALS INC$2,418,000
-52.0%
437,3290.0%0.07%
-44.9%
CGEN  COMPUGEN LTDord$2,386,000
-42.6%
1,289,9900.0%0.07%
-34.3%
FUSN SellFUSION PHARMACEUTICALS INC$2,017,000
-72.6%
809,854
-14.6%
0.06%
-68.1%
JYAC  JIYA ACQUISITION CORP$2,037,000
+0.5%
206,2000.0%0.06%
+15.7%
PRLD  PRELUDE THERAPEUTICS INC$1,926,000
-24.4%
368,9590.0%0.06%
-12.5%
FULC SellFULCRUM THERAPEUTICS INC$1,884,000
-81.7%
384,590
-11.5%
0.06%
-78.8%
TPST  TEMPEST THERAPEUTICS INC$1,771,000
-36.4%
823,6540.0%0.05%
-25.7%
EPIX  ESSA PHARMA INC$1,654,000
-49.0%
524,9440.0%0.05%
-41.5%
PHAS BuyPHASEBIO PHARMACEUTICALS INC$1,665,000
-51.7%
2,774,869
+6.2%
0.05%
-44.8%
ACRX  ACELRX PHARMACEUTICALS INC$1,546,000
-14.4%
6,329,2020.0%0.04%0.0%
AGLE BuyAEGLEA BIOTHERAPEUTICS INC$1,552,000
-62.7%
3,072,034
+69.6%
0.04%
-57.1%
 RADIUS HEALTH INCnote 3.000% 9/0$1,473,000
-0.3%
1,500,0000.0%0.04%
+16.2%
 THERAVANCE BIOPHARMA INCnote 3.250%11/0$1,381,000
-2.7%
1,500,0000.0%0.04%
+11.1%
 NEUROCRINE BIOSCIENCES INCnote 2.250% 5/1$1,328,000
+0.6%
1,000,0000.0%0.04%
+18.2%
 VIGIL NEUROSCIENCE INC$1,218,000
-63.3%
471,9580.0%0.04%
-58.3%
VINC  VINCERX PHARMA INC$1,075,000
-67.0%
814,1940.0%0.03%
-62.2%
IMRA  IMARA INC$1,028,000
-35.1%
842,4020.0%0.03%
-25.0%
BCEL  ATRECA INC$828,000
-43.5%
462,5300.0%0.02%
-35.1%
APLT  APPLIED THERAPEUTICS INC$665,000
-55.1%
701,6800.0%0.02%
-48.6%
SPRO SellSPERO THERAPEUTICS INC$571,000
-93.4%
770,710
-22.2%
0.02%
-92.2%
 NEVRO CORPnote 2.750% 4/0$466,000
-13.9%
500,0000.0%0.01%0.0%
NUVBWS  NUVATION BIO INC*w exp 07/07/202$38,000
-64.8%
134,0280.0%0.00%
-66.7%
PSTX ExitPOSEIDA THERAPEUTICS INC$0-289,754
-100.0%
-0.03%
STTK ExitSHATTUCK LABS INC$0-313,499
-100.0%
-0.03%
CGEM ExitCULLINAN ONCOLOGY INC$0-652,578
-100.0%
-0.17%
ATHA ExitATHIRA PHARMA INC$0-552,252
-100.0%
-0.19%
GRPH ExitGRAPHITE BIO INC$0-1,790,754
-100.0%
-0.23%
AMRN ExitAMARIN CORP PLCspons adr new$0-4,419,700
-100.0%
-0.37%
RIGL ExitRIGEL PHARMACEUTICALS INC$0-4,921,487
-100.0%
-0.37%
XENT ExitINTERSECT ENT INC$0-550,000
-100.0%
-0.39%
ExitCYTOKINETICS INCnote 4.000%11/1$0-8,000,000
-100.0%
-0.74%
EHC ExitENCOMPASS HEALTH CORP$0-502,500
-100.0%
-0.90%
HCA ExitHCA HEALTHCARE INC$0-375,000
-100.0%
-2.37%
Original filings

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

  • View 13F-HR filed 2022-08-15
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 Q2 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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