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Prosight Management, LP: 13F holdings, Q2 2026

Hedge fund · SEC EDGAR filings (CIK 1617201) · Explore on the interactive board

Prosight Management, LP disclosed 36 US equity positions worth $580.4m in its Q2 2026 13F filing (holdings as of June 30, 2026, filed August 14, 2026). Its largest position is LKFT at 10.6% of the reported book, followed by JANX, NKTR. The top ten holdings are 70.7% of the book, and the portfolio behaves like about 16 equal-weight positions. Versus the prior filing it opened 5 new positions, added to 16, reduced 15 and exited 15. Note: this manager's most recent filing is 3934 quarters behind the newest quarter on file, so these figures are history rather than current positioning.

This manager's most recent filing is 3934 quarter(s) behind the newest quarter on file. Treat these figures as history, not current positioning.
$580.4mreported US equity book
36positions
10.6%largest position
70.7%top 10 weight
15.97effective positions (1/HHI)
2quarters on file since Q1 2026

What does Prosight Management, LP own? Top holdings as of June 30, 2026

Change is measured in shares against the previous filing (Q1 2026), so price moves do not read as decisions. This quarter: 5 new, 16 added, 15 reduced, 15 exited.

#StockSectorWeightValueSharesΔ sharesAction
1 LKFT LAKEFRONT BIOTHERAPEUTICS NV Healthcare 10.6%$61.3m2,043,344 32% added
2 JANX JANUX THERAPEUTICS INC Healthcare 10.1%$58.4m3,804,481 7% added
3 NKTR NEKTAR THERAPEUTICS Healthcare 9.7%$56.5m810,000 10% added
4 BSX BOSTON SCIENTIFIC CORP Healthcare 9.3%$54.2m1,270,273 60% added
5 STTK SHATTUCK LABS INC Healthcare 7.1%$41.3m5,957,877 19% added
6 INSM INSMED INC Healthcare 6.9%$40.0m375,609 new
7 ALNY ALNYLAM PHARMACEUTICALS INC Healthcare 5.1%$29.5m98,080 29% added
8 SNDX SYNDAX PHARMACEUTICALS INC Healthcare 4.5%$26.2m1,200,000 56% added
9 KURA KURA ONCOLOGY INC Healthcare 3.8%$22.2m2,021,964 -40% reduced
10 ALKS ALKERMES PLC Healthcare 3.6%$20.7m394,389 -23% reduced
11 IRTC IRHYTHM HOLDINGS INC Healthcare 3.4%$19.7m165,500 1555% added
12 VEEV VEEVA SYS INC Healthcare 3.2%$18.8m106,200 23% added
13 ZYME ZYMEWORKS INC Healthcare 3.0%$17.6m674,434 25% added
14 ABVX ABIVAX SA Healthcare 2.5%$14.3m107,394 2% added
15 CRNXGBP CRINETICS PHARMACEUTICALS IN 2.4%$14.0m374,666 7% added
16 MLYS MINERALYS THERAPEUTICS INC Healthcare 2.1%$12.1m449,795 new
17 ADCT ADC THERAPEUTICS SA Healthcare 1.4%$8.4m7,824,749 -6% reduced
18 ICUI ICU MED INC Healthcare 1.3%$7.5m51,000 86% added
19 ISRG INTUITIVE SURGICAL INC Healthcare 1.2%$6.8m17,000 325% added
20 CRBP CORBUS PHARMACEUTICALS HLDGS Healthcare 1.1%$6.1m650,000 -7% reduced
21 PRCT PROCEPT BIOROBOTICS CORP Healthcare 1.0%$6.1m268,269 -86% reduced
22 WGS GENEDX HOLDINGS CORP Healthcare 1.0%$5.9m85,500 -84% reduced
23 OPCH OPTION CARE HEALTH INC Healthcare 1.0%$5.7m270,716 new
24 OKUR ONKURE THERAPEUTICS INC 0.8%$4.5m978,992 -55% reduced
25 EBS EMERGENT BIOSOLUTIONS INC Healthcare 0.7%$3.9m459,952 -28% reduced
26 PFE PFIZER INC Healthcare 0.6%$3.3m135,366 new
27 KIDS ORTHOPEDIATRICS CORP Healthcare 0.5%$3.0m157,500 -48% reduced
28 RCKT ROCKET PHARMACEUTICALS INC Healthcare 0.4%$2.4m700,000 2% added
29 ANTX AN2 THERAPEUTICS INC 0.4%$2.3m474,638 -8% reduced
30 PLRX PLIANT THERAPEUTICS INC Healthcare 0.3%$1.6m1,370,233 -18% reduced
31 TECX TECTONIC THERAPEUTIC INC Healthcare 0.2%$1.4m39,731 -50% reduced
32 MGTX MEIRAGTX HLDGS PLC Healthcare 0.2%$1.2m90,000 -97% reduced
33 EFOR EVERFORTH INC Technology 0.2%$1.2m67,500 new
34 RNTX REIN THERAPEUTICS INC 0.2%$1.1m1,100,000 167% added
35 COYA COYA THERAPEUTICS INC 0.2%$994.5k170,000 -60% reduced
36 IMRX IMMUNEERING CORP 0.0%$183.9k36,861 -70% reduced

What did Prosight Management, LP sell? Positions exited since the previous filing

StockPrior weightPrior value
CON CONCENTRA GROUP HOLDINGS PAR18.9%$10.8m
430 TERNS PHARMACEUTICALS INC18.6%$10.7m
PHR PHREESIA INC16.1%$9.2m
SDGR SCHRODINGER INC10.1%$5.8m
ROIV ROIVANT SCIENCES LTD8.7%$5.0m
IMVT IMMUNOVANT INC7.6%$4.4m
UPB UPSTREAM BIO INC3.8%$2.2m
OMER OMEROS CORP3.2%$1.8m
ACET ADICET BIO INC3.0%$1.7m
RGNX REGENXBIO INC2.9%$1.7m
VKTX VIKING THERAPEUTICS INC2.6%$1.5m
TBI TRUEBLUE INC1.7%$974.0k
PVLA PALVELLA THERAPEUTICS INC NE1.1%$623.2k
NVCR NOVOCURE LTD1.0%$549.4k
TMDX TRANSMEDICS GROUP INC0.9%$497.1k

Sector mix

SectorWeight
Healthcare95.8%
Technology0.2%

Sectors cover positions whose ticker resolved to a sector; the remainder is unclassified, not cash.

Filing history

QuarterPositionsEquity value
Q2 202636$580.4m
Q1 202646$609.8m

How concentrated is Prosight Management, LP's portfolio?

Across every quarter Prosight Management, LP has filed, its median largest position is 9.6% of the book and its median top-ten weight is 67.9%, which WhaleCreep classifies as concentrated (the gate is a median largest position of 5%). Of 15.0 completed holding spells, the median lasted 1.0 quarters; 36.0 positions are still open and their final length is unknown.