Stocks/Funds/CIK 1637359

Omega Fund Management, LLC

long-term holderconcentrated
Quarterly 13F filings · Latest period 2026-03-31 · CIK 1637359
Assets
$163M
-3.7% YoY
Holdings
10
Lifetime alpha vs market
-31.28% annual
Average hold time
2.9 yr
median 1.9 yr

Quarterly history

Cum return -66% vs S&P +52% · α -118% lifetimeAUM $163M · peak $1.1BFlow $-36M (-13%)2016-062017-122019-062020-122022-062023-122025-062026-03
AUM ($B)fundS&P 500(gap = α)/ Flow in/out

Behavior signals (lifetime)

Dip response
-10.67%
trims when stocks drop
when a holding falls −10%+
Middle response
-2.36%
baseline attrition
Rally response
-6.34%
trims into rallies
when a holding rises +10%+

Top positions · 10

Ticker$ value% portYoYHold time
BCAXBicara Therapeutics Inc.$48M29.2%+52.6%1.8 yr
NUVBNuvation Bio Inc.$35M21.2%+143.8%5.3 yr
BBOTBridgeBio Oncology Thera$29M18.0%0.8 yr
KMTSKestra Medical Technolog$20M12.5%-20.0%1.3 yr
BBNXBeta Bionics, Inc.$13M8.1%-18.1%1.3 yr
$6M3.7%2.5 yr
ALMSAlumis Inc. Common Stock$5M3.3%+258.8%2.0 yr
SANASana Biotechnology, Inc.$2M1.5%+71.4%5.3 yr
IMAImageneBio Inc$2M1.4%0.8 yr
REPLReplimune Group, Inc.$2M1.2%-21.5%7.8 yr

Portfolio composition (YoY)

Industry mix
Biotechnology75.8%+19.1pp$124M
Medical - Instruments & Supplies12.5%-13.9pp$20M
Medical - Equipment & Services8.1%-6.3pp$13M
Unknown3.7%+1.1pp$6M
Country
US96.3%-1.0pp
Unknown3.7%+1.1pp
Top 5: 89.0% · Top 10: 100.0% · Top 25: 100.0%

Winners

TickerPrev $PnLYoY %
NUVB$23M+0.03B143.8%
BCAX$29M+0.02B52.6%
ALMS$4M+0.01B258.8%
SANA$1M+0.00B71.4%
REPL$19M-0.00B-21.5%

Losers

TickerPrev $PnLYoY %
KMTS$45M-0.01B-20.0%
BBNX$24M-0.00B-18.1%
REPL$19M-0.00B-21.5%

Top buys this quarter · 1

BCAX Bicara Therapeutics Inc. Commo+$4M

Top sells this quarter · 3

UPB Upstream Bio, Inc.exit$12M
ALMS Alumis Inc. Common Stock$9M
KMTS Kestra Medical Technologies, L$7M

Quarterly history (TTM returns)

PeriodAUM# PosReturn (1yr)SPY (1yr)Alpha (1yr)Flow
2026-03-31$163M10+35.63%+17.59%+18.04%-0.04B
2025-12-31$287M11+25.35%+17.72%+7.63%-0.03B
2025-09-30$222M12-24.12%+17.52%-41.64%+0.00B
2025-06-30$154M13-57.99%+14.94%-72.93%-0.01B
2025-03-31$169M13-59.77%+8.30%-68.08%+0.07B
2024-12-31$154M12-5.24%+24.89%-30.13%+0.02B
2024-09-30$160M11-24.41%+36.04%-60.44%+0.05B
2024-06-30$135M11-30.25%+24.49%-54.74%-0.01B
2024-03-31$155M11-3.56%+29.62%-33.18%-0.03B
2023-12-31$123M14-55.07%+26.18%-81.25%+0.05B
2023-09-30$109M12-20.43%+21.57%-42.00%-0.02B
2023-06-30$178M12-0.65%+19.42%-20.08%-0.01B
2023-03-31$153M14-35.50%-7.82%-27.68%-0.06B
2022-12-31$297M16+21.91%+7.56%+14.35%-0.04B
2022-09-30$273M19-8.29%-4.93%-3.36%-0.01B
2022-06-30$313M21-18.10%-16.11%-1.99%-0.09B