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  Name: Rock Springs Capital Management LP
  City: Baltimore
  State: MD
  Zip: 21202
   
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Portfolio Summary View Filing
  Filing Report Date : 2024-03-31
  Total Value : $3,925,021,000
  Total Value Change : $-117,202,000
  Securities Held Change : 10
   
All Securities Held : 109
  New Positions : 16
  Closed Positions : 6
  Increased Positions : 40
  Unchanged Positions : 42
  Decreased Positions : 11

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Holdings Found : 100     View All Holdings Currently Viewing:  ALL     Page 1 of 1
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Ticker Company Name Position
Rank
New/Closed
Postion
Last
Close
    Value Shares Held
% of
Portfolio
Value
Change
Change In
Shares Held
   % of Company    Industry
   (BPMC)1 Year Chart         BPMC Blueprint Medicines Corp 1 - $103.63 $237,003,000 2,498,448 6.04% -28,793,000 -383,119 3.785    N/A
   (IMCR)1 Year Chart         IMCR Immunocore Holdings Adr 2 - $51.00 $153,908,000 2,367,816 3.92% -27,926,000 -293,691 5.407    N/A
   (NBIX)1 Year Chart         NBIX Neurocrine Biosciences Inc 3 - $140.55 $145,492,000 1,054,900 3.71% -12,093,000 -141,100 1.129    Biotechnology
   (EVH)1 Year Chart         EVH Evolent Health, Inc. 4 - $22.98 $130,750,000 3,987,500 3.33% -49,000 27,500 3.016    N/A
   (ISRG)1 Year Chart         ISRG Intuitive Surgical Inc 5 - $372.63 $119,128,000 298,500 3.04% 18,426,000 0 0.083    Medical Appliances & ...
   (UNH)1 Year Chart         UNH Unitedhealth Group Inc 6 - $523.55 $113,781,000 230,000 2.9% -7,307,000 0 0.024    Health Care Plans
   (PEN)1 Year Chart         PEN Penumbra Inc 7 - $200.23 $112,706,000 505,000 2.87% -22,497,000 -32,500 1.391    N/A
   (IDXX)1 Year Chart         IDXX Idexx Laboratories Inc 8 - $518.44 $96,782,000 179,250 2.47% -2,711,000 0 0.21    Diagnostic Substances
   (ACHC)1 Year Chart         ACHC Acadia Healthcare Company Inc 9 - $73.18 $93,282,000 1,177,500 2.38% 9,807,000 104,000 1.188    N/A
   (ARGX)1 Year Chart         ARGX Argenx Se 10 - $356.66 $90,260,000 229,250 2.3% 3,046,000 0 0.488    N/A
   (BSX)1 Year Chart         BSX Boston Scientific Corp 11 - $75.67 $84,414,000 1,232,500 2.15% 13,163,000 0 0.086    Medical Instruments &...
   (RARE)1 Year Chart         RARE Ultragenyx Pharmaceutical Inc 12 - $40.58 $82,872,000 1,774,938 2.11% -1,006,000 20,900 2.162    Restaurants
   (DXCM)1 Year Chart         DXCM DexCom Inc 13 - $130.84 $82,769,000 596,750 2.11% 8,811,000 750 0.153    Medical Instruments &...
   (LLY)1 Year Chart         LLY Eli Lilly & Co 14 - $803.17 $80,324,000 103,250 2.05% 39,811,000 33,750 0.011    Drug Manufacturers - ...
   (FRPT)1 Year Chart         FRPT Freshpet, Inc. 15 - $126.67 $76,757,000 662,500 1.96% 19,278,000 0 1.079    N/A
   (MDGL)1 Year Chart         MDGL Madrigal Pharmaceuticals Inc 16 - $242.49 $76,355,000 285,931 1.95% 30,503,000 87,762 1.448    Diagnostic Substances
   (EXAS)1 Year Chart         EXAS Exact Sciences Corp 17 - $53.52 $73,186,000 1,059,750 1.86% -2,237,000 40,250 0.596    Biotechnology
   (ALGN)1 Year Chart         ALGN Align Technology Inc 18 - $264.02 $72,142,000 220,000 1.84% 11,862,000 0 0.279    Medical Appliances & ...
   (RYTM)1 Year Chart         RYTM Rhythm Pharmaceuticals, Inc. 19 - $38.01 $65,987,000 1,522,893 1.68% -4,020,000 0 2.147    N/A
   (EW)1 Year Chart         EW Edwards Lifesciences Corp 20 - $30.33 $61,856,000 647,300 1.58% 12,499,000 0 0.104    Medical Appliances & ...
   (KYMR)1 Year Chart         KYMR Kymera Therapeutics, Inc. 21 - $0.00 $61,194,000 1,522,238 1.56% 22,438,000 0 2.442    N/A
   (CLDX)1 Year Chart         CLDX Celldex Therapeutics Inc 22 - $37.67 $57,591,000 1,372,185 1.47% 19,135,000 402,539 2.182    Diagnostic Substances
   (PODD)1 Year Chart         PODD Insulet Corp 24 - $173.42 $54,848,000 320,000 1.4% -38,833,000 -111,750 0.42    Medical Instruments &...
   (WST)1 Year Chart         WST West Pharmaceutical Service... 25 - $337.01 $54,311,000 137,250 1.38% 5,983,000 0 0.186    Rubber & Plastics
   (XENE)1 Year Chart         XENE Xenon Pharmaceuticals Inc. 26 - $0.00 $54,053,000 1,255,577 1.38% -3,779,000 0 1.668    N/A
   (AGL)1 Year Chart         AGL Agilon Health, Inc. 27 - $5.55 $53,894,000 8,835,000 1.37% -54,413,000 205,000 1.885    N/A
   (MRUS)1 Year Chart         MRUS Merus Nv 28 - $43.72 $51,630,000 1,146,560 1.32% 27,648,000 274,491 1.986    N/A
   (AGIO)1 Year Chart         AGIO Agios Pharmaceuticals Inc 29 - $33.88 $51,594,000 1,764,505 1.31% 3,665,000 -387,668 2.553    N/A
   (HUM)1 Year Chart         HUM Humana Inc 30 - $355.63 $51,109,000 147,408 1.3% -90,812,000 -162,592 0.111    Health Care Plans
   (MIRM)1 Year Chart         MIRM Mirum Pharmaceuticals, Inc. 31 - $0.00 $46,637,000 1,856,564 1.19% -8,018,000 5,100 3.464    N/A
   (IRTC)1 Year Chart         IRTC Irhythm Technologies, Inc. 32 - $91.50 $45,501,000 392,250 1.16% 7,957,000 41,500 1.117    N/A
   (SWAV)1 Year Chart         SWAV Shockwave Medical, Inc. 33 - $329.64 $43,960,000 135,000 1.12% 21,093,000 15,000 0.366    N/A
   (ASND)1 Year Chart         ASND Ascendis Pharma AS 34 - $122.85 $43,839,000 290,000 1.12% 7,313,000 0 0.449    N/A
   (SRPT)1 Year Chart         SRPT Sarepta Therapeutics Inc 35 - $129.12 $42,411,000 327,600 1.08% 10,821,000 0 0.389    Drug Manufacturers - ...
   (BRKS)1 Year Chart         BRKS Brooks Automation Inc 36 - $51.55 $41,880,000 694,750 1.07% 8,821,000 187,250 0.941    Semiconductor Equipme...
   (OLK)1 Year Chart         OLK Olink Holding Ab Publ Adr 37 - $0.00 $39,415,000 1,676,500 1% -2,749,000 0 1.409    N/A
   (IMVT)1 Year Chart         IMVT Immunovant Inc 38 - $0.00 $37,160,000 1,150,123 0.95% -4,266,000 166,822 1.321    N/A
   (ACCD)1 Year Chart         ACCD Accolade, Inc. 39 - $7.28 $37,099,000 3,540,000 0.95% -4,756,000 55,000 4.971    N/A
   (ALNY)1 Year Chart         ALNY Alnylam Pharmaceuticals Inc 40 - $149.62 $36,466,000 244,000 0.93% -8,515,000 9,000 0.198    Biotechnology
   (AKRO)1 Year Chart         AKRO Akero Therapeutics, Inc. 41 - $0.00 $32,835,000 1,299,888 0.84% 7,592,000 218,824 2.121    N/A
   (OSCR)1 Year Chart         OSCR Oscar Health, Inc. 42 - $0.00 $31,376,000 2,110,000 0.8% 24,651,000 1,375,000 1.256    N/A
   (PCRX)1 Year Chart         PCRX Pacira Pharmaceuticals, Inc. 43 - $30.90 $30,842,000 1,055,500 0.79% -4,771,000 0 2.134    Drug Manufacturers - ...
   (RVMD)1 Year Chart         RVMD Revolution Medicines, Inc. 44 - $39.66 $29,770,000 923,681 0.76% 8,973,000 198,529 0.564    N/A
   (LFST)1 Year Chart         LFST Lifestance Health Group, Inc. 45 - $7.48 $29,493,000 4,780,000 0.75% -6,016,000 245,000 1.279    N/A
   (SGRY)1 Year Chart         SGRY Surgery Partners, Inc. 46 New $25.40 $29,383,000 985,000 0.75% 29,383,000 985,000 0.726    N/A
   (WRBY)1 Year Chart         WRBY Warby Parker Inc. 47 - $16.90 $28,309,000 2,080,000 0.72% -290,000 51,700 2.168    N/A
   (INZY)1 Year Chart         INZY Inozyme Pharma, Inc. 48 - $0.00 $28,198,000 3,681,174 0.72% 12,516,000 0 5.96    N/A
   (INSP)1 Year Chart         INSP Inspire Medical Systems Inc 49 - $152.37 $28,030,000 130,500 0.71% 7,890,000 31,500 0.401    N/A
   (LEGN)1 Year Chart         LEGN Churchill Cap Corp Iii 50 - $42.96 $28,016,000 499,486 0.71% -1,614,000 7,042 0.386    N/A
   (MREO)1 Year Chart         MREO Mereo Biopharma Group plc 51 - $3.04 $26,869,000 8,142,109 0.68% 8,426,000 158,258 7.522    N/A
   (TVTX)1 Year Chart         TVTX Travere Therapeutics, Inc 52 - $6.61 $26,405,000 3,424,818 0.67% 1,490,000 653,372 3.909    N/A
   (CERE)1 Year Chart         CERE Cerevel Therapeutics Holdin... 53 - $41.77 $23,162,000 547,946 0.59% -90,226,000 -2,126,299 0.351    N/A
   (IRON)1 Year Chart         IRON Disc Medicine, Inc 54 - $31.26 $22,630,000 363,468 0.58% 1,636,000 0 1.506    N/A
   (COLL)1 Year Chart         COLL Collegium Pharmaceutical, Inc 55 - $34.50 $21,817,000 562,000 0.56% 4,519,000 0 1.354    N/A
   (VKTX)1 Year Chart         VKTX Viking Therapeutics, Inc. 56 New $64.23 $21,402,000 261,000 0.55% 21,402,000 261,000 0.26    N/A
   (DVAX)1 Year Chart         DVAX Dynavax Technologies Corp 57 - $11.46 $20,793,000 1,675,474 0.53% -2,630,000 0 1.243    Drug Manufacturers - ...
   (ZLAB)1 Year Chart         ZLAB Zai Lab Ltd 58 - $20.01 $20,780,000 1,297,123 0.53% -10,295,000 160,100 1.474    N/A
   (MGNX)1 Year Chart         MGNX Macrogenics Inc 59 - $4.26 $19,213,000 1,305,250 0.49% 7,873,000 126,454 2.104    Biotechnology
   (NVO)1 Year Chart         NVO Novo Nordisk A/S (ADR) 60 New $135.16 $18,939,000 147,500 0.48% 18,939,000 147,500 0.008    Drug Manufacturers - ...
   (KRYS)1 Year Chart         KRYS Krystal Biotech Inc 61 - $166.83 $18,499,000 103,969 0.47% 5,601,000 0 0.417    N/A
   (BCRX)1 Year Chart         BCRX Biocryst Pharmaceuticals Inc 62 - $6.42 $17,761,000 3,496,256 0.45% -1,829,000 225,875 1.845    Biotechnology
   (GPCR)1 Year Chart         GPCR Structure Therapeutics Inc. 63 - $35.81 $17,686,000 412,649 0.45% 6,001,000 125,973 0.89    N/A
   (PHVS)1 Year Chart         PHVS Pharvaris N V Ord Shs 64 New $0.00 $17,400,000 752,924 0.44% 17,400,000 752,924 1.818    N/A
   (PRTA)1 Year Chart         PRTA Prothena Corp Plc 65 - $21.65 $15,482,000 625,048 0.39% -7,232,000 0 1.164    N/A
   (NVRO)1 Year Chart         NVRO Nevro Corp 66 - $9.96 $15,379,000 1,065,000 0.39% -6,679,000 40,000 2.669    N/A
   (VERA)1 Year Chart         VERA Vera Therapeutics, Inc. 67 New $0.00 $14,711,000 341,168 0.37% 14,711,000 341,168 0.806    N/A
   (MRSN)1 Year Chart         MRSN Mersana Therapeutics, Inc. 68 - $2.62 $13,650,000 3,046,782 0.35% 6,581,000 0 2.527    N/A
   (FOLD)1 Year Chart         FOLD Amicus Therapeutics Inc 69 - $10.61 $13,578,000 1,152,656 0.35% -1,517,000 88,850 0.339    Biotechnology
   (CRNX)1 Year Chart         CRNX Crinetics Pharmaceuticals, ... 70 New $49.50 $13,547,000 289,400 0.35% 13,547,000 289,400 0.394    N/A
   (CRL)1 Year Chart         CRL Charles River Laboratories ... 71 New $221.48 $13,141,000 48,500 0.33% 13,141,000 48,500 0.091    Biotechnology
   (BMRN)1 Year Chart         BMRN Biomarin Pharmaceutical Inc 72 - $88.63 $12,999,000 148,832 0.33% -1,351,000 0 0.079    Drug Manufacturers - ...
   (DYN)1 Year Chart         DYN Dyne Therapeutics, Inc. 73 New $32.63 $12,827,000 451,824 0.33% 12,827,000 451,824 0.557    N/A
   (JSPR)1 Year Chart         JSPR Jasper Therapeutics Ord Shs 74 New $15.12 $11,871,000 404,335 0.3% 11,871,000 404,335 0.398    N/A
   (CMPX)1 Year Chart         CMPX Compass Therapeutics Ord Shs 75 - $0.00 $10,917,000 5,513,788 0.28% 2,315,000 0 5.625    N/A
   (EDAP)1 Year Chart         EDAP EDAP TMS S.A. (ADR) 76 - $6.01 $10,841,000 1,475,000 0.28% 3,521,000 88,575 5.062    Medical Appliances & ...
   (MLYS)1 Year Chart         MLYS Mineralys Therapeutics, Inc. 77 - $0.00 $10,233,000 792,615 0.26% 193,000 -374,877 1.94    N/A
   (APLT)1 Year Chart         APLT Applied Therapeutics Inc. 78 - $0.00 $10,186,000 1,497,918 0.26% 7,187,000 602,723 1.94    N/A
   (NUVL)1 Year Chart         NUVL Nuvalent, Inc. 79 New $0.00 $9,409,000 125,302 0.24% 9,409,000 125,302 0.191    N/A
   (ABOS)1 Year Chart         ABOS Acumen Pharmaceuticals, Inc. 80 - $0.00 $9,315,000 2,300,059 0.24% 483,000 0 5.683    N/A
   (IMTX)1 Year Chart         IMTX Immatics N.V 81 - $10.63 $8,920,000 848,751 0.23% -10,829,000 -1,026,715 1.349    N/A
   (NMRA)1 Year Chart         NMRA Neumora Therapeutics, Inc. 82 New $9.45 $8,884,000 646,118 0.23% 8,884,000 646,118 0.423    N/A
   (ELVN)1 Year Chart         ELVN Enliven Therapeutics Ord Shs 83 New $0.00 $7,539,000 428,571 0.19% 7,539,000 428,571 1.04    N/A
   (CGON)1 Year Chart         CGON CG Oncology, Inc 84 New $28.97 $7,501,000 170,859 0.19% 7,501,000 170,859 0.259    N/A
   (BHVN)1 Year Chart         BHVN Biohaven Ltd. 85 New $38.72 $6,945,000 126,984 0.18% 6,945,000 126,984 0.158    N/A
   (FULC)1 Year Chart         FULC Fulcrum Therapeutics, Inc. 86 - $0.00 $6,869,000 727,673 0.18% 1,957,000 0 1.155    N/A
   (AUTL)1 Year Chart         AUTL Autolus Therapeutics Plc 87 New $3.87 $6,590,000 1,032,988 0.17% 6,590,000 1,032,988 0.597    N/A
   (LUNG)1 Year Chart         LUNG Pulmonx Corp 88 - $0.00 $6,048,000 652,400 0.15% -2,270,000 0 1.738    N/A
   (AUPH)1 Year Chart         AUPH Aurinia Pharmaceuticals Inc 89 - $5.59 $5,763,000 1,150,347 0.15% 2,054,000 737,777 0.909    N/A
   (EPIX)1 Year Chart         EPIX ESSA Pharma Inc 90 - $0.00 $5,748,000 677,005 0.15% 1,280,000 0 1.539    Diagnostic Substances
   (PLRX)1 Year Chart         PLRX Pliant Therapeutics, Inc. 91 - $0.00 $5,736,000 384,996 0.15% -1,236,000 0 0.612    N/A
   (BEAM)1 Year Chart         BEAM Beam Therapeutics Inc. 92 - $24.80 $4,874,000 147,510 0.12% 1,841,000 36,080 0.181    N/A
   (VINC)1 Year Chart         VINC Vincerx Pharma, Inc 93 - $0.72 $4,512,000 891,719 0.11% 3,460,000 0 4.242    N/A
   (KYTX)1 Year Chart         KYTX Kyverna Therapeutics 94 New $13.70 $4,445,000 178,963 0.11% 4,445,000 178,963 0.416    N/A
   (SGMT)1 Year Chart         SGMT Sagimet Biosciences Inc. 95 - $4.79 $4,177,000 770,671 0.11% 175,000 32,316 3.608    N/A
   (GOSS)1 Year Chart         GOSS Gossamer Bio Inc 96 - $0.67 $3,855,000 3,266,960 0.1% 874,000 0 1.449    N/A
   (ADAP)1 Year Chart         ADAP Adaptimmune Therapeutics PLC 97 - $1.08 $3,832,000 2,425,468 0.1% 1,909,000 0 1.568    N/A
   (ACRS)1 Year Chart         ACRS Aclaris Therapeutics, Inc. 98 - $1.18 $3,414,000 2,753,495 0.09% 266,000 -245,000 3.719    N/A
   (CGEN)1 Year Chart         CGEN Compugen Ltd (USA) 99 - $1.86 $3,328,000 1,289,990 0.08% 774,000 0 1.557    Biotechnology
   (AMLX)1 Year Chart         AMLX Amylyx Pharmaceuticals, Inc. 100 - $0.00 $2,872,000 1,011,412 0.07% -5,003,000 476,400 1.498    N/A
   (BMEA)1 Year Chart         BMEA Biomea Fusion, Inc. 101 - $11.58 $2,708,000 181,147 0.07% 78,000 0 0.63    N/A

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