Stocks/Funds/CIK 1617201

Prosight Management, LP

long-term holder
Quarterly 13F filings · Latest period 2026-03-31 · CIK 1617201
Assets
$610M
+100.4% YoY
Holdings
46
Lifetime alpha vs market
-50.25% annual
Average hold time
1.5 yr
median 1.0 yr

Quarterly history

Cum return -91% vs S&P +52% · α -143% lifetimeAUM $610M · peak $610MFlow $138M (+29%)2017-122019-032020-062021-092022-122024-032025-062026-03
AUM ($B)fundS&P 500(gap = α)/ Flow in/out

Behavior signals (lifetime)

Dip response
+19.80%
adds when stocks drop
when a holding falls −10%+
Middle response
-4.80%
baseline attrition
Rally response
-19.71%
trims into rallies
when a holding rises +10%+

Top positions · 30

Ticker$ value% portYoYHold time
NKTRNektar Therapeutics$53M8.7%0.5 yr
BSXBoston Scientific Corpor$50M8.2%-37.8%0.8 yr
JANXJanux Therapeutics, Inc.$49M8.1%-48.5%1.8 yr
PRCTPROCEPT BioRobotics Corp$49M8.0%-57.1%1.0 yr
GLPGGalapagos N.V.$47M7.6%+19.4%5.5 yr
WGSGeneDx Holdings Corp.$34M5.5%-27.5%0.5 yr
STTKShattuck Labs, Inc.$32M5.3%+576.8%4.8 yr
ADCTADC Therapeutics S.A.$31M5.1%+166.0%3.8 yr
KURAKura Oncology, Inc.$27M4.5%+23.2%5.5 yr
ALNYAlnylam Pharmaceuticals,$25M4.1%+22.5%1.0 yr
MGTXMeiraGTx Holdings plc$23M3.7%+27.7%7.0 yr
ALKSAlkermes plc$18M3.0%+7.1%2.3 yr
SNDXSyndax Pharmaceuticals, $18M2.9%+90.1%2.0 yr
VEEVVeeva Systems Inc.$15M2.5%-24.2%0.5 yr
$13M2.2%2.5 yr

Portfolio composition (YoY)

Industry mix
Biotechnology66.8%-11.8pp$407M
Medical - Devices17.5%+12.8pp$107M
Medical - Healthcare Information Services10.5%+8.0pp$64M
Unknown2.5%-2.2pp$15M
Medical - Equipment & Services1.8%$11M
Medical - Instruments & Supplies0.7%-0.7pp$4M
Staffing & Employment Services0.2%$1M
Medical - Pharmaceuticals0.1%-0.2pp$1M
Country
US79.0%+16.5pp
BE7.6%-3.2pp
CH5.1%+0.7pp
IE3.0%-2.1pp
Unknown2.5%-2.2pp
FR1.9%
GB0.8%-6.9pp
JE0.1%
Top 5: 40.6% · Top 10: 65.0% · Top 25: 93.6%

Winners

TickerPrev $PnLYoY %
STTK$6M+0.04B576.8%
ROIV$18M+0.03B174.5%
ADCT$13M+0.02B166.0%
MGTX$25M+0.01B27.7%
SNDX$7M+0.01B90.1%

Losers

TickerPrev $PnLYoY %
JANX$19M-0.01B-48.5%
RCKT$10M-0.00B-46.3%
SDGR$8M-0.00B-42.5%
OKUR$1M-0.00B-3.7%

Top buys this quarter · 15

BSX Boston Scientific Corporation+$37M
WGS GeneDx Holdings Corp.+$30M
ALNY Alnylam Pharmaceuticals, Inc.+$19M
STTK Shattuck Labs, Inc.+$17M
JANX Janux Therapeutics, Inc.+$16M
GLPG Galapagos N.V.+$14M
PRCT PROCEPT BioRobotics Corporatio+$14M
NKTR Nektar Therapeutics+$13M
ABVX Abivax S.A.+$10M
ALKS Alkermes plc+$8M

Top sells this quarter · 15

ISRG Intuitive Surgical, Inc.$21M
SEM Select Medical Holdings Corporexit$17M
FOLD Amicus Therapeutics, Inc.exit$17M
ROIV Roivant Sciences Ltd.$12M
ICLR ICON Public Limited Companyexit$12M
LH Labcorp Holdings Inc.exit$9M
CON Concentra Group Holdings Paren$8M
AVTR Avantor, Inc.exit$7M
MGTX MeiraGTx Holdings plc$5M
TECX Tectonic Therapeutic, Inc.$5M

Quarterly history (TTM returns)

PeriodAUM# PosReturn (1yr)SPY (1yr)Alpha (1yr)Flow
2026-03-31$610M46+35.44%+17.59%+17.85%+0.14B
2025-12-31$484M38+19.31%+17.72%+1.60%+0.03B
2025-09-30$416M41+1.79%+17.52%-15.73%-0.09B
2025-06-30$410M39-16.36%+14.94%-31.30%+0.10B
2025-03-31$304M38-35.41%+8.30%-43.72%-0.00B
2024-12-31$357M35-24.67%+24.89%-49.55%-0.01B
2024-09-30$394M41-24.08%+36.04%-60.12%+0.05B
2024-06-30$335M46-57.76%+24.49%-82.25%+0.05B
2024-03-31$359M44-56.27%+29.62%-85.89%+0.11B
2023-12-31$249M34-78.10%+26.18%-104.28%-0.04B
2023-09-30$316M41-80.22%+21.57%-101.79%+0.12B
2023-06-30$342M35-63.32%+19.42%-82.75%+0.17B
2023-03-31$208M38-75.63%-7.82%-67.82%+0.12B
2022-12-31$179M37-16.01%+7.56%-23.57%+0.03B
2022-09-30$182M36+5.21%-4.93%+10.14%+0.05B
2022-06-30$123M23-45.05%-16.11%-28.94%+0.05B