Fund HoldingsRock Springs Capital Management LP

Total Portfolio Value
$3.73B
Total Bought
$373.83M
Total Sold
$417.84M
Net Transaction
-$44.01M
Filing Period:
Securities
SharesValue ($K)
Q2 2023
Q3 2023
Change
Q2 2023
Q3 2023
Weight (%)
Change
BOSTON SCIENTIFIC CORP(BSX)267,5001,160,000+892,50014,46961,2481.64%+46,779
IMMUNOVANT INC(IMVT)0644,344+644,344024,7360.66%+24,736
NEUROCRINE BIOSCIENCES INC(NBIX)1,279,5001,236,000-43,500120,657139,0503.72%+18,393
AMGEN INC(AMGN)068,000+68,000018,2760.49%+18,276
ACUMEN PHARMACEUTICALS INC02,812,579+2,812,579011,6720.31%+11,672
MIRUM PHARMACEUTICALS INC(MIRM)1,820,7331,820,733047,10257,5351.54%+10,433
RHYTHM PHARMACEUTICALS INC(RYTM)1,597,1231,597,123026,33736,6140.98%+10,277
IMMUNOGEN INC112,620759,365+646,7452,12512,0510.32%+9,926
INSPIRE MED SYS INC(INSP)044,500+44,50008,8310.24%+8,831
MIRATI THERAPEUTICS INC1,121,6471,131,207+9,56040,52549,2751.32%+8,750
SEAGEN INC0400,200+400,200084,9022.27%+84,902
MERUS N V478,531838,428+359,89712,60019,7700.53%+7,170
SAGIMET BIOSCIENCES INC0738,355+738,35506,4980.17%+6,498
KRYSTAL BIOTECH INC(KRYS)34,90190,560+55,6594,09710,5050.28%+6,408
UNITEDHEALTH GROUP INC(UNH)0230,000+230,0000115,9643.11%+115,964
WARBY PARKER INC(WRBY)1,325,0001,575,000+250,00015,48920,7270.56%+5,238
AGILON HEALTH INC(AGL)08,292,500+8,292,5000147,2753.95%+147,275
DYNAVAX TECHNOLOGIES CORP1,813,7581,813,758023,43426,7890.72%+3,355
HUMANA INC(HUM)470,000436,500-33,500210,151212,3665.69%+2,215
AZENTA INC(AZTA)469,900477,500+7,60021,93523,9660.64%+2,031
ASCENDIS PHARMA A/S(ASND)0425,500+425,500039,8441.07%+39,844
AEGLEA BIOTHERAPEUTICS INC(SYRE)0136,556+136,55601,6730.04%+1,673
GOSSAMER BIO INC1,100,2743,266,960+2,166,6861,3202,7210.07%+1,400
REVOLUTION MEDICINES INC(RVMD)702,712725,152+22,44018,79820,0720.54%+1,275
RENEO PHARMACEUTICALS INC1,143,1851,143,18507,4998,7050.23%+1,206
APPLIED THERAPEUTICS INC780,791808,809+28,0189992,0140.05%+1,015
DISC MEDICINE INC(IRON)363,468363,468016,13817,0760.46%+938
FULCRUM THERAPEUTICS INC727,673727,67302,4013,2310.09%+830
GOSSAMER BIO INC0002,8893,7080.10%+819
IRHYTHM TECHNOLOGIES INC(IRTC)0350,750+350,750033,0620.89%+33,062
NOVAVAX INC(NVAX)536,700647,700+111,0003,9884,6890.13%+702
MEREO BIOPHARMA GROUP PLC7,042,3917,676,481+634,0909,2969,9030.27%+607
BIOCRYST PHARMACEUTICALS INC(BCRX)2,497,1932,551,226+54,03317,58018,0630.48%+482
BIOMARIN PHARMACEUTICAL INC(BMRN)0264,500+264,500023,4030.63%+23,403
CERVOMED INC080,033+80,03303700.01%+370
ESSA PHARMA INC663,317677,005+13,6881,7912,0920.06%+301
SPRUCE BIOSCIENCES INC2,728,1252,728,12505,8656,1660.17%+300
NEUROCRINE BIOSCIENCES INC(NBIX)0001,2761,4980.04%+222
FRESHPET INC(FRPT)662,500662,500043,59943,6461.17%+46
NEVRO CORP0004624720.01%+10
NUVATION BIO INC(NUVB)134,028134,028022130.00%-9
ACELRX PHARMACEUTICALS INC316,460316,46003511840.00%-168
TRAVERE THERAPEUTICS INC0002,8572,6770.07%-179
VINCERX PHARMA INC891,719891,71901,1599010.02%-259
ATRECA INC362,530362,5300355950.00%-261
NKARTA INC331,571331,57107264610.01%-265
COMPUGEN LTD1,289,9901,289,99001,4711,2000.03%-271
PLIANT THERAPEUTICS INC0491,221+491,22108,5180.23%+8,518
ADAPTIMMUNE THERAPEUTICS PLC2,787,8452,787,84502,5792,1750.06%-404
AMICUS THERAPEUTICS INC
COM
1,063,8061,063,806013,36112,9360.35%-426
MACROGENICS INC1,123,0961,178,796+55,7006,0095,4930.15%-515
TEMPEST THERAPEUTICS INC536,214536,21406811630.00%-518
CELLDEX THERAPEUTICS INC NEW(CLDX)421,615500,101+78,48614,30513,7630.37%-543
AKERO THERAPEUTICS INC1,550,7541,419,150-131,60472,40571,7811.92%-624
XILIO THERAPEUTICS INC1,440,7591,440,75903,7753,0400.08%-735
ALTIMMUNE INC223,2550-223,2557880-788
SELECT SECTOR SPDR TR
ST STR CARE ETF
200,000200,000026,54625,7480.69%-798
LEGEND BIOTECH CORP(LEGN)458,265458,265031,63430,7820.82%-852
BEAM THERAPEUTICS INC(BEAM)111,430111,43003,5582,6800.07%-878
SPERO THERAPEUTICS INC669,53357,373-612,160971690.00%-901
AURINIA PHARMACEUTICALS INC(AUPH)479,540479,54004,6423,7260.10%-916
SAREPTA THERAPEUTICS INC(SRPT)0392,000+392,000047,5181.27%+47,518
LIFESTANCE HEALTH GROUP INC(LFST)2,900,0003,670,000+770,00026,47725,2130.68%-1,264
GAMIDA CELL LTD715,02352,015-663,0081,380540.00%-1,326
EDAP TMS S A1,186,3001,360,000+173,70010,9389,5470.26%-1,390
COLLEGIUM PHARMACEUTICAL INC(COLL)650,000562,000-88,00013,96912,5610.34%-1,408
WEST PHARMACEUTICAL SVSC INC(WST)202,000202,000077,25975,7922.03%-1,467
INVITAE CORP0585,659+585,65903540.01%+354
ACELYRIN INC141,876141,87602,9651,4430.04%-1,522
AEGLEA BIOTHERAPEUTICS INC3,413,9060-3,413,9061,5380-1,538
FATE THERAPEUTICS INC612,215612,21502,9141,2980.03%-1,616
KINNATE BIOPHARMA INC746,973405,811-341,1622,2635680.02%-1,695
PULMONX CORP652,400652,40008,5536,7390.18%-1,814
DESIGN THERAPEUTICS INC(DSGN)460,391460,39102,9001,0870.03%-1,814
LEAP THERAPEUTICS INC1,074,5171,074,51703,3631,4830.04%-1,880
VIGIL NEUROSCIENCE INC471,958471,95804,4362,5440.07%-1,893
ICOSAVAX INC868,409868,40908,6236,7300.18%-1,893
RELAY THERAPEUTICS INC(RLAY)0673,966+673,96605,6680.15%+5,668
BLACK DIAMOND THERAPEUTICS I563,2330-563,2332,8440-2,844
THESEUS PHARMACEUTICALS INC437,329437,32904,0801,1760.03%-2,904
BLUEPRINT MEDICINES CORP2,186,6722,685,294+498,622138,198134,8553.61%-3,342
SHOCKWAVE MED INC115,100147,500+32,40032,85129,3670.79%-3,483
INOZYME PHARMA INC3,428,0843,681,174+253,09019,09415,4610.41%-3,633
ZAI LAB LTD(ZLAB)1,222,4231,237,023+14,60033,89830,0720.81%-3,826
PARATEK PHARMACEUTICALS INC1,734,0370-1,734,0373,8320-3,832
PENUMBRA INC(PEN)366,000503,750+137,750125,926121,8623.26%-4,064
AMYLYX PHARMACEUTICALS INC(AMLX)01,545,016+1,545,016028,2890.76%+28,289
XENON PHARMACEUTICALS INC(XENE)1,178,0021,178,002045,35340,2411.08%-5,113
NOVOCURE LTD(NVCR)125,0000-125,0005,1880-5,187
AURA BIOSCIENCES INC1,019,757722,896-296,86112,5946,4840.17%-6,110
OLINK HLDG AB01,676,500+1,676,500024,7280.66%+24,728
COMPASS THERAPEUTICS INC5,513,7885,513,788017,53410,8620.29%-6,672
MERSANA THERAPEUTICS INC03,403,133+3,403,13304,3220.12%+4,322
ANAPTYSBIO INC000000
GUARDANT HEALTH INC(GH)200,0000-200,0007,1600-7,160
ACCOLADE INC2,820,0002,913,000+93,00037,98530,8200.83%-7,166
PHREESIA INC1,305,0001,776,391+471,39140,46833,1830.89%-7,285
TRAVERE THERAPEUTICS INC(TVTX)01,807,742+1,807,742016,1610.43%+16,161
NEVRO CORP01,211,600+1,211,600023,2870.62%+23,287
IMMATICS N.V(IMTX)2,536,1441,875,466-660,67829,26721,7180.58%-7,549
Page 1 of 1