Omega Fund Management, LLC
CIK
1637359
Location
Boston, MA
Portfolio Value
Small
$163,141,764
Diversification
Moderately concentrated
Filing Date
Global Rank
#4,320
/ 8,232
▼ 947
Top Industry
Biotechnology
79.4%
3Y Alpha vs SPY
-44.5%
Period ended 2 months ago
Filed May 15, 2026 · 30d
25 quarters · since Mar 2020
Clone Performance
Jun 2023–Jun 2026 · vs SPYHypothetical growth of cloning every reported 13F position and rebalancing on each filing, indexed to the same start.
Cloned portfolio
-55.6%
SPY
+76.3%
Annualised alpha
-44.5%
Max drawdown
−74.9%
Estimate. 13F holdings are quarter-lagged and long-only, so the clone rebalances about 45 days after each period end — when the filing becomes public — and excludes options and short positions. Past performance does not predict future results.
Portfolio Concentration
10 positions · as of Mar 31, 2026 · Δ vs Dec 31, 2025Top Position
29.2%
+3.9 pts
Top 5
89.0%
+9.7 pts
Top 10
100.0%
+0.8 pts
HHI
1,879
Moderately concentrated+334
Portfolio Trend
25 quarters · across all stocks
Sector Breakdown
As of Mar 31, 2026| Sector | % Portfolio | Value |
|---|---|---|
| Healthcare | 100.0% | $163,141,764 |
Last Quarter's Activity
Export CSVAdded To
Positions the filer increased
1 positions
| Ticker | Company | Δ Shares | Shares | Value | Open |
|---|---|---|---|---|---|
| BCAX | Bicara Therapeutics Inc. | +187,500 | 2,392,150 | $47,579,863 | |
| No positions match the current search. | |||||
New Positions
Positions the filer opened this quarterNo qualifying positions this quarter.
Sold Out
Positions the filer fully exited
1 positions
| Ticker | Company | Shares | Value | Open |
|---|---|---|---|---|
| UPB | Upstream Bio, Inc. | 1,326,293 | $36,008,854 | |
| No positions match the current search. | ||||
10 positions ·
$163,141,764 total
· as of Mar 31, 2026
| Ticker | Company | Type | Shares | Value (USD) | % of Portfolio | History |
|---|---|---|---|---|---|---|
| BCAX |
Bicara Therapeutics Inc.
Healthcare
|
Added | 2,392,150 | $47,579,863 | 29.16% | |
| NUVB |
Nuvation Bio Inc.
Healthcare
|
Held | 8,081,089 | $34,667,871 | 21.25% | |
| BBOT |
BridgeBio Oncology Therapeutics, Inc.
Healthcare
|
Held | 3,289,661 | $29,442,465 | 18.05% | |
| KMTS |
Kestra Medical Technologies, Ltd.
Healthcare
|
Reduced | 1,022,149 | $20,371,429 | 12.49% | |
| BBNX |
Beta Bionics, Inc.
Healthcare
|
Held | 1,316,183 | $13,188,153 | 8.08% | |
| ENGN |
enGene Therapeutics Inc.
Healthcare
|
Held | 876,357 | $5,967,991 | 3.66% | |
| ALMS |
Alumis Inc.
Healthcare
|
Reduced | 241,255 | $5,314,847 | 3.26% | |
| SANA |
Sana Biotechnology, Inc.
Healthcare
|
Held | 843,750 | $2,430,000 | 1.49% | |
| IMA |
ImageneBio, Inc.
Healthcare
|
Held | 455,361 | $2,276,805 | 1.40% | |
| REPL |
Replimune Group, Inc.
Healthcare
|
Held | 248,672 | $1,902,340 | 1.17% |