Rock Springs Capital Management Lp Top Holdings and 13F Report (2024)

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About Rock Springs Capital Management Lp

Investment Activity

Rock Springs Capital Management Lp has $3.94 billion in total holdings as of March 31, 2024.
Rock Springs Capital Management Lp owns shares of 113 different stocks, but just 45 companies or ETFs make up 80% of its holdings.
Approximately 10.31% of the portfolio was purchased this quarter.
About 14.31% of the portfolio was sold this quarter.
This quarter, Rock Springs Capital Management Lp has purchased 104 new stocks and bought additional shares in 40 stocks.
Rock Springs Capital Management Lp sold shares of 11 stocks and completely divested from 7 stocks this quarter.

Largest Holdings

Blueprint Medicines: $237,002,777
Immunocore: $153,908,040
Neurocrine Biosciences: $145,491,808
Evolent Health: $130,750,125
Intuitive Surgical: $119,128,365

Largest New Holdings this Quarter

Surgery Partners: $29,382,550 Holding
Viking Therapeutics: $21,402,000 Holding
Novo Nordisk A/S: $18,939,000 Holding
Pharvaris: $17,400,074 Holding
Vera Therapeutics: $14,711,164 Holding

Largest Purchases this Quarter

Surgery Partners: 985,000 shares (about $29.38M)
Eli Lilly and Company: 33,750 shares (about $26.26M)
Madrigal Pharmaceuticals: 87,762 shares (about $23.44M)
Viking Therapeutics: 261,000 shares (about $21.40M)
Oscar Health: 1,375,000 shares (about $20.45M)

Largest Sales this Quarter

Cerevel Therapeutics: 2,126,299 shares (about $89.88M)
Humana: 162,592 shares (about $56.37M)
Blueprint Medicines: 383,119 shares (about $36.34M)
Neurocrine Biosciences: 141,100 shares (about $19.46M)
Insulet: 111,750 shares (about $19.15M)

Sector Allocation Over Time

Selling

Neutral

Buying

Latest 13F Holdings and Changes Since Previous Quarterly Filing

Issuer Name	Holdings Value	Approximate Purchase/Sale	Change in Shares	Shares Held	% of Portfolio	Sector
BPMC Blueprint Medicines	$237,002,777	$36,342,668 ▼	-13.3%	2,498,448	6.0%	Medical
IMCR Immunocore	$153,908,040	$19,089,915 ▼	-11.0%	2,367,816	3.9%	Medical
NBIX Neurocrine Biosciences	$145,491,808	$19,460,512 ▼	-11.8%	1,054,900	3.7%	Medical
EVH Evolent Health	$130,750,125	$901,725 ▲	0.7%	3,987,500	3.3%	Computer and Technology
ISRG Intuitive Surgical	$119,128,365		0.0%	298,500	3.0%	Medical
UNH UnitedHealth Group	$113,781,000		0.0%	230,000	2.9%	Medical
PEN Penumbra	$112,705,900	$7,253,350 ▼	-6.0%	505,000	2.9%	Medical
IDXX IDEXX Laboratories	$96,782,453		0.0%	179,250	2.5%	Medical
ACHC Acadia Healthcare	$93,281,550	$8,238,880 ▲	9.7%	1,177,500	2.4%	Medical
ARGX argenx	$90,260,310		0.0%	229,250	2.3%	Medical
BSX Boston Scientific	$84,413,925		0.0%	1,232,500	2.1%	Medical
RARE Ultragenyx Pharmaceutical	$82,871,855	$975,821 ▲	1.2%	1,774,938	2.1%	Medical
DXCM DexCom	$82,769,225	$104,025 ▲	0.1%	596,750	2.1%	Medical
LLY Eli Lilly and Company	$80,324,370	$26,256,150 ▲	48.6%	103,250	2.0%	Medical
FRPT Freshpet	$76,757,250		0.0%	662,500	1.9%	Consumer Staples
MDGL Madrigal Pharmaceuticals	$76,355,014	$23,435,964 ▲	44.3%	285,931	1.9%	Medical
EXAS Exact Sciences	$73,186,335	$2,779,665 ▲	3.9%	1,059,750	1.9%	Medical
ALGN Align Technology	$72,142,400		0.0%	220,000	1.8%	Medical
RYTM Rhythm Pharmaceuticals	$65,986,954		0.0%	1,522,893	1.7%	Medical
EW Edwards Lifesciences	$61,855,988		0.0%	647,300	1.6%	Medical
KYMR Kymera Therapeutics	$61,193,968		0.0%	1,522,238	1.6%	Medical
CLDX Celldex Therapeutics	$57,590,604	$16,894,562 ▲	41.5%	1,372,185	1.5%	Medical
PHR Phreesia	$56,594,450	$3,788,119 ▲	7.2%	2,365,000	1.4%	Medical
PODD Insulet	$54,848,000	$19,153,950 ▼	-25.9%	320,000	1.4%	Medical
WST West Pharmaceutical Services	$54,311,198		0.0%	137,250	1.4%	Medical
XENE Xenon Pharmaceuticals	$54,052,590		0.0%	1,255,577	1.4%	Medical
AGL agilon health	$53,893,500	$1,250,500 ▲	2.4%	8,835,000	1.4%	Medical
MRUS Merus	$51,629,597	$12,360,330 ▲	31.5%	1,146,560	1.3%	Medical
AGIO Agios Pharmaceuticals	$51,594,126	$11,335,412 ▼	-18.0%	1,764,505	1.3%	Medical
HUM Humana	$51,109,302	$56,373,899 ▼	-52.4%	147,408	1.3%	Medical
MIRM Mirum Pharmaceuticals	$46,636,888	$128,112 ▲	0.3%	1,856,564	1.2%	Medical
IRTC iRhythm Technologies	$45,501,000	$4,814,000 ▲	11.8%	392,250	1.2%	Medical
SWAV Shockwave Medical	$43,960,050	$4,884,450 ▲	12.5%	135,000	1.1%	Medical
ASND Ascendis Pharma A/S	$43,839,300		0.0%	290,000	1.1%	Medical
SRPT Sarepta Therapeutics	$42,411,096		0.0%	327,600	1.1%	Medical
AZTA Azenta	$41,879,530	$11,287,430 ▲	36.9%	694,750	1.1%	Medical
ALNY Alnylam Pharmaceuticals	$41,322,925	$6,202,175 ▲	17.7%	276,500	1.0%	Medical
OLK Olink Holding AB (publ)	$39,414,515		0.0%	1,676,500	1.0%	Medical
IMVT Immunovant	$37,160,474	$5,390,019 ▲	17.0%	1,150,123	0.9%	Medical
ACCD Accolade	$37,099,200	$576,400 ▲	1.6%	3,540,000	0.9%	Business Services
AKRO Akero Therapeutics	$32,835,171	$5,527,494 ▲	20.2%	1,299,888	0.8%	Medical
OSCR Oscar Health	$31,375,700	$20,446,250 ▲	187.1%	2,110,000	0.8%	Finance
PCRX Pacira BioSciences	$30,841,710		0.0%	1,055,500	0.8%	Medical
RVMD Revolution Medicines	$29,770,239	$6,398,590 ▲	27.4%	923,681	0.8%	Medical
LFST LifeStance Health Group	$29,492,600	$1,511,650 ▲	5.4%	4,780,000	0.7%	Medical
SGRY Surgery Partners	$29,382,550	$29,382,550 ▲	New Holding	985,000	0.7%	Medical
WRBY Warby Parker	$28,308,800	$703,637 ▲	2.5%	2,080,000	0.7%	Medical
INZY Inozyme Pharma	$28,197,793		0.0%	3,681,174	0.7%	Medical
INSP Inspire Medical Systems	$28,030,095	$6,765,885 ▲	31.8%	130,500	0.7%	Medical
LEGN Legend Biotech	$28,016,170	$394,986 ▲	1.4%	499,486	0.7%	Medical
MREO Mereo BioPharma Group	$26,868,960	$522,251 ▲	2.0%	8,142,109	0.7%	Medical
TVTX Travere Therapeutics	$26,405,347	$5,037,498 ▲	23.6%	3,424,818	0.7%	Medical
CERE Cerevel Therapeutics	$23,161,677	$89,878,657 ▼	-79.5%	547,946	0.6%	Medical
IRON Disc Medicine	$22,629,518		0.0%	363,468	0.6%	Medical
COLL Collegium Pharmaceutical	$21,816,840		0.0%	562,000	0.6%	Medical
VKTX Viking Therapeutics	$21,402,000	$21,402,000 ▲	New Holding	261,000	0.5%	Medical
DVAX Dynavax Technologies	$20,792,632		0.0%	1,675,474	0.5%	Medical
ZLAB Zai Lab	$20,779,910	$2,564,802 ▲	14.1%	1,297,123	0.5%	Medical
MGNX MacroGenics	$19,213,280	$1,861,403 ▲	10.7%	1,305,250	0.5%	Medical
NVO Novo Nordisk A/S	$18,939,000	$18,939,000 ▲	New Holding	147,500	0.5%	Medical
KRYS Krystal Biotech	$18,499,204		0.0%	103,969	0.5%	Medical
BCRX BioCryst Pharmaceuticals	$17,760,980	$1,147,445 ▲	6.9%	3,496,256	0.5%	Medical
GPCR Structure Therapeutics	$17,686,136	$5,399,203 ▲	43.9%	412,649	0.4%	Medical
PHVS Pharvaris	$17,400,074	$17,400,074 ▲	New Holding	752,924	0.4%	Medical
PRTA Prothena	$15,482,439		0.0%	625,048	0.4%	Medical
NVRO Nevro	$15,378,600	$577,600 ▲	3.9%	1,065,000	0.4%	Medical
VERA Vera Therapeutics	$14,711,164	$14,711,164 ▲	New Holding	341,168	0.4%	Medical
MRSN Mersana Therapeutics	$13,649,583		0.0%	3,046,782	0.3%	Medical
FOLD Amicus Therapeutics	$13,578,288	$1,046,653 ▲	8.4%	1,152,656	0.3%	Medical
CRNX Crinetics Pharmaceuticals	$13,546,814	$13,546,814 ▲	New Holding	289,400	0.3%	Medical
CRL Charles River Laboratories International	$13,141,075	$13,141,075 ▲	New Holding	48,500	0.3%	Medical
BMRN BioMarin Pharmaceutical	$12,998,987		0.0%	148,832	0.3%	Medical
DYNE THERAPEUTICS INC	$12,827,283	$12,827,283 ▲	New Holding	451,824	0.3%	COM
JASPER THERAPEUTICS INC	$11,871,276	$11,871,276 ▲	New Holding	404,335	0.3%	COM NEW
CMPX Compass Therapeutics	$10,917,300		0.0%	5,513,788	0.3%	Medical
EDAP Edap Tms	$10,841,250	$651,026 ▲	6.4%	1,475,000	0.3%	Medical
MLYS Mineralys Therapeutics	$10,232,660	$4,839,662 ▼	-32.1%	792,615	0.3%	Medical
APLT Applied Therapeutics	$10,185,842	$4,098,516 ▲	67.3%	1,497,918	0.3%	Medical
NUVL Nuvalent	$9,408,927	$9,408,927 ▲	New Holding	125,302	0.2%	Medical
ABOS Acumen Pharmaceuticals	$9,315,239		0.0%	2,300,059	0.2%	Medical
IMTX Immatics	$8,920,373	$10,790,775 ▼	-54.7%	848,751	0.2%	Medical
NEUMORA THERAPEUTICS INC.	$8,884,123	$8,884,123 ▲	New Holding	646,118	0.2%	COM
ELVN Enliven Therapeutics	$7,538,564	$7,538,564 ▲	New Holding	428,571	0.2%	Medical
CG ONCOLOGY INC	$7,500,710	$7,500,710 ▲	New Holding	170,859	0.2%	COM
BHVN Biohaven	$6,944,755	$6,944,755 ▲	New Holding	126,984	0.2%	Medical
FULC Fulcrum Therapeutics	$6,869,233		0.0%	727,673	0.2%	Medical
AUTL Autolus Therapeutics	$6,590,463	$6,590,463 ▲	New Holding	1,032,988	0.2%	Medical
LUNG Pulmonx	$6,047,748		0.0%	652,400	0.2%	Medical
AUPH Aurinia Pharmaceuticals	$5,763,238	$3,696,262 ▲	178.8%	1,150,347	0.1%	Medical
EPIX ESSA Pharma	$5,747,772		0.0%	677,005	0.1%	Medical
PLRX Pliant Therapeutics	$5,736,440		0.0%	384,996	0.1%	Medical
BEAM Beam Therapeutics	$4,873,730	$1,192,083 ▲	32.4%	147,510	0.1%	Medical
VINC Vincerx Pharma	$4,512,098		0.0%	891,719	0.1%	Medical
KYVERNA THERAPEUTICS INC	$4,445,441	$4,445,441 ▲	New Holding	178,963	0.1%	COM
SAGIMET BIOSCIENCES INC	$4,177,037	$175,153 ▲	4.4%	770,671	0.1%	COM SER A
GOSS Gossamer Bio	$3,855,013		0.0%	3,266,960	0.1%	Medical
GOSSAMER BIO INC	$3,844,670		0.0%	9,573,000	0.1%	NOTE 5.000% 6/0
ADAP Adaptimmune Therapeutics	$3,832,239		0.0%	2,425,468	0.1%	Medical
ACRS Aclaris Therapeutics	$3,414,334	$303,800 ▼	-8.2%	2,753,495	0.1%	Medical
CGEN Compugen	$3,328,174		0.0%	1,289,990	0.1%	Medical

Showing largest 100 holdings. View all holdings.

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Rock Springs Capital Management Lp Top Holdings and 13F Report (2024)

About Rock Springs Capital Management Lp

Investment Activity

Largest Holdings

Largest New Holdings this Quarter

Largest Purchases this Quarter

Largest Sales this Quarter

Sector Allocation Over Time

Latest 13F Holdings and Changes Since Previous Quarterly Filing

More Institutional Buying and Selling Information

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Rock Springs Capital Management Lp Top Holdings and 13F Report (2024)

About Rock Springs Capital Management Lp

Investment Activity

Largest Holdings

Largest New Holdings this Quarter

Largest Purchases this Quarter

Largest Sales this Quarter

Sector Allocation Over Time

Map of 500 Largest Holdings ofRock Springs Capital Management Lp

Latest 13F Holdings and Changes Since Previous Quarterly Filing

More Institutional Buying and Selling Information