Rock Springs Capital Management

Rock Springs Capital Management as of March 31, 2021

Portfolio Holdings for Rock Springs Capital Management

Rock Springs Capital Management holds 151 positions in its portfolio as reported in the March 2021 quarterly 13F filing

Company (Ticker) Portfolio Weight Valued At Change in Shares Share Count Share Price
Agios Pharmaceuticals (AGIO) 2.9 $131M 2.5M 51.64
Humana (HUM) 2.8 $126M 301k 419.25
Zai Lab Adr (ZLAB) 2.7 $125M 934k 133.43
Atea Pharmaceuticals (AVIR) 2.3 $105M 1.7M 61.75
UnitedHealth (UNH) 2.2 $102M 275k 372.07
Five Prime Therapeutics 2.2 $100M 2.7M 37.67
Neurocrine Biosciences (NBIX) 2.2 $99M 1.0M 97.25
Immunocore Hldgs Ads (IMCR) 2.1 $98M 2.3M 42.57
Insulet Corporation (PODD) 2.1 $97M 371k 260.92
Align Technology (ALGN) 2.1 $96M 178k 541.53
Aclaris Therapeutics (ACRS) 2.0 $90M 3.6M 25.20
Intuitive Surgical Com New (ISRG) 1.9 $89M 120k 738.94
IDEXX Laboratories (IDXX) 1.9 $88M 180k 489.31
Hca Holdings (HCA) 1.8 $85M 450k 188.34
Invitae (NVTAQ) 1.8 $85M 2.2M 38.21
Novavax Com New (NVAX) 1.8 $84M 461k 181.31
Argenx Se Sponsored Adr (ARGX) 1.8 $83M 300k 275.39
Freshpet (FRPT) 1.8 $80M 507k 158.81
EXACT Sciences Corporation (EXAS) 1.6 $75M 570k 131.78
Blueprint Medicines (BPMC) 1.6 $73M 747k 97.23
Pacira Pharmaceuticals (PCRX) 1.6 $72M 1.0M 70.09
Beigene Sponsored Adr 1.5 $70M 200k 348.08
Nevro (NVRO) 1.5 $68M 485k 139.50
Irhythm Technologies (IRTC) 1.3 $60M 433k 138.86
Horizon Therapeutics Pub L SHS 1.3 $58M 625k 92.04
Mirati Therapeutics 1.2 $55M 324k 171.30
Teleflex Incorporated (TFX) 1.2 $54M 130k 415.46
Bolt Biotherapeutics (BOLT) 1.1 $51M 1.6M 32.91
Ultragenyx Pharmaceutical (RARE) 1.1 $51M 450k 113.86
Edwards Lifesciences (EW) 1.1 $49M 582k 83.64
Mersana Therapeutics (MRSN) 1.0 $45M 2.8M 16.18
Cullinan Oncology (CGEM) 1.0 $45M 1.1M 41.67
Karuna Therapeutics Ord 1.0 $44M 369k 120.23
Phreesia (PHR) 1.0 $44M 850k 52.10
Eargo 0.9 $43M 852k 49.95
Alnylam Pharmaceuticals (ALNY) 0.9 $42M 300k 141.19
Covetrus 0.9 $42M 1.4M 29.97
Arvinas Ord (ARVN) 0.9 $41M 622k 66.10
Encompass Health Corp (EHC) 0.9 $41M 500k 81.90
Acadia Healthcare (ACHC) 0.9 $40M 700k 57.14
Penumbra (PEN) 0.9 $40M 148k 270.58
Travere Therapeutics (TVTX) 0.8 $37M 1.5M 24.97
Health Catalyst (HCAT) 0.8 $37M 785k 46.77
Allakos (ALLK) 0.8 $35M 306k 114.78
Seagen 0.8 $35M 250k 138.86
Ardelyx (ARDX) 0.7 $34M 5.2M 6.62
Astrazeneca Sponsored Adr (AZN) 0.7 $32M 650k 49.72
Biogen Idec (BIIB) 0.7 $32M 114k 279.75
Boston Scientific Corporation (BSX) 0.7 $31M 800k 38.65
Guardant Health (GH) 0.7 $31M 200k 152.65
Madrigal Pharmaceuticals (MDGL) 0.7 $30M 259k 116.97
Ascendis Pharma A/s Sponsored Adr (ASND) 0.7 $30M 234k 128.88
Mirum Pharmaceuticals (MIRM) 0.6 $30M 1.5M 19.82
Evolent Health Cl A (EVH) 0.6 $29M 1.4M 20.20
Prothena Corp SHS (PRTA) 0.6 $29M 1.2M 25.12
Shockwave Med 0.6 $29M 220k 130.26
Accolade (ACCD) 0.6 $28M 625k 45.37
ACADIA Pharmaceuticals (ACAD) 0.6 $28M 1.1M 25.80
Pulmonx Corp (LUNG) 0.6 $27M 593k 45.74
Spruce Biosciences (SPRB) 0.6 $26M 1.6M 16.60
Adaptive Biotechnologies Cor (ADPT) 0.6 $26M 650k 40.26
Amarin Corp Spons Adr New (AMRN) 0.6 $26M 4.2M 6.21
Ppd 0.6 $26M 675k 37.84
Sarepta Therapeutics (SRPT) 0.5 $25M 329k 74.53
Epizyme 0.5 $24M 2.8M 8.71
Kymera Therapeutics (KYMR) 0.5 $24M 622k 38.86
Novocure Ord Shs (NVCR) 0.5 $23M 175k 132.18
Intersect Ent 0.5 $23M 1.1M 20.88
Collegium Pharmaceutical Inc Common Stock Usd (COLL) 0.5 $22M 920k 23.70
Inspire Med Sys (INSP) 0.5 $21M 100k 206.99
Abcam Ads 0.4 $21M 1.1M 19.22
Oak Street Health 0.4 $20M 375k 54.27
Kura Oncology (KURA) 0.4 $20M 710k 28.27
BioMarin Pharmaceutical (BMRN) 0.4 $19M 254k 75.51
Cytokinetics Note 4.000%11/1 (Principal) 0.4 $19M 8.0M 2.39
Rocket Pharmaceuticals (RCKT) 0.4 $18M 403k 44.37
Sierra Oncology Com New 0.4 $18M 1.0M 17.23
Gamida Cell SHS 0.4 $17M 2.1M 8.09
Inozyme Pharma (INZY) 0.4 $16M 828k 19.80
Prelude Therapeutics (PRLD) 0.4 $16M 378k 43.33
Dynavax Technologies Corp Com New (DVAX) 0.4 $16M 1.7M 9.83
Rigel Pharmaceuticals Com New 0.4 $16M 4.7M 3.42
Nkarta (NKTX) 0.4 $16M 492k 32.90
Mereo Biopharma Group Ads (MREO) 0.3 $15M 4.5M 3.37
Akero Therapeutics (AKRO) 0.3 $15M 521k 29.01
Essa Pharma Com New (EPIX) 0.3 $15M 503k 29.05
Athira Pharma (ATHA) 0.3 $15M 788k 18.40
Olink Hldg Ab Sponsored Ads (OLK) 0.3 $14M 400k 36.00
Spero Therapeutics (SPRO) 0.3 $14M 966k 14.72
Gossamer Bio Note 5.000% 6/0 (Principal) 0.3 $14M 16M 0.90
Theravance Biopharma (TBPH) 0.3 $14M 683k 20.41
Cerevel Therapeutics Hldng I (CERE) 0.3 $14M 1.0M 13.73
Applied Therapeutics (APLT) 0.3 $13M 702k 18.75
Tg Therapeutics (TGTX) 0.3 $13M 267k 48.20
Rhythm Pharmaceuticals (RYTM) 0.3 $13M 599k 21.27
Galapagos Nv Spon Adr (GLPG) 0.3 $13M 165k 77.09
Macrogenics (MGNX) 0.3 $13M 394k 31.85
Aeglea Biotherapeutics 0.3 $13M 1.6M 7.92
Innovage Hldg Corp (INNV) 0.3 $12M 475k 25.79
Paratek Pharmaceuticals 0.3 $12M 1.7M 7.06
Baxter International (BAX) 0.3 $12M 140k 84.34
Anaptysbio Inc Common (ANAB) 0.3 $12M 535k 21.55
Shattuck Labs (STTK) 0.2 $11M 389k 29.24
CONMED Corporation (CNMD) 0.2 $11M 85k 130.59
Protara Therapeutics Com Stk (TARA) 0.2 $11M 690k 15.74
Fibrogen (FGEN) 0.2 $11M 313k 34.71
Translate Bio 0.2 $11M 650k 16.49
Ngm Biopharmaceuticals 0.2 $11M 365k 29.07
Prometheus Biosciences 0.2 $11M 575k 18.26
Compugen Ord (CGEN) 0.2 $11M 1.2M 8.59
Chinook Therapeutics 0.2 $11M 673k 15.54
Xenon Pharmaceuticals (XENE) 0.2 $10M 573k 17.90
Kinnate Biopharma 0.2 $10M 326k 31.16
Fusion Pharmaceuticals 0.2 $10M 948k 10.72
Aurinia Pharmaceuticals (AUPH) 0.2 $10M 782k 12.99
Amicus Therapeutics (FOLD) 0.2 $10M 1.0M 9.88
Orion Acquisition Corp Unit 02/19/2026 0.2 $10M 1.0M 10.00
Design Therapeutics (DSGN) 0.2 $9.8M 327k 29.90
Nurix Therapeutics (NRIX) 0.2 $9.7M 311k 31.09
Legend Biotech Corp Sponsored Ads (LEGN) 0.2 $9.1M 313k 29.02
Relay Therapeutics (RLAY) 0.2 $8.7M 252k 34.57
Adaptimmune Therapeutics Sponds Adr (ADAP) 0.2 $8.2M 1.5M 5.31
West Pharmaceutical Services (WST) 0.2 $8.0M 29k 281.79
Atreca Cl A Com (BCEL) 0.2 $7.0M 454k 15.33
Chiasma 0.1 $6.8M 2.2M 3.13
Trillium Therapeutics Com New 0.1 $6.7M 621k 10.74
Acelrx Pharmaceuticals 0.1 $6.4M 3.8M 1.70
Fate Therapeutics (FATE) 0.1 $5.8M 70k 82.46
Constellation Pharmceticls I 0.1 $5.4M 232k 23.39
Dex (DXCM) 0.1 $5.4M 15k 359.40
Phasebio Pharmaceuticals 0.1 $5.4M 1.6M 3.46
Galera Therapeutics (GRTX) 0.1 $5.0M 568k 8.82
Nuvation Bio Com Cl A (NUVB) 0.1 $4.2M 402k 10.45
Royalty Pharma Shs Class A (RPRX) 0.1 $3.5M 80k 43.62
Retrophin Note 2.500% 9/1 (Principal) 0.1 $3.4M 3.3M 1.03
Bcls Acquisition Corp Com Cl A 0.1 $3.3M 309k 10.57
Poseida Therapeutics I (PSTX) 0.1 $2.8M 290k 9.55
Connect Biopharma Hldgs Ads (CNTB) 0.0 $2.2M 119k 18.50
Lifesci Acquisition Ii Corp 0.0 $2.1M 206k 10.14
Fs Development Corp Ii Com Cl A 0.0 $2.1M 209k 9.96
Eucrates Biomedical Acqu Cor Unit 10/23/2027 0.0 $2.1M 206k 10.01
Turmeric Acquisition Corp Unit 10/08/2025 0.0 $2.1M 206k 10.00
Jiya Acquisition Corp Com Cl A 0.0 $2.0M 206k 9.84
Population Health Invs Co In Unit 99/99/9999 0.0 $2.0M 201k 10.05
Helix Acquisition Corp Com Cl A 0.0 $1.6M 155k 10.20
Theravance Biopharma Note 3.250%11/0 (Principal) 0.0 $1.5M 1.5M 1.02
Radius Health Note 3.000% 9/0 (Principal) 0.0 $1.4M 1.5M 0.93
Neurocrine Biosciences Note 2.250% 5/1 (Principal) 0.0 $1.4M 1.0M 1.35
Pacira Biosciences Note 2.375% 4/0 (Principal) 0.0 $1.2M 1.0M 1.21
Nevro Corp Note 2.750% 4/0 (Principal) 0.0 $771k 500k 1.54
Nuvation Bio *w Exp 07/07/202 (NUVB.WS) 0.0 $358k 134k 2.67