Bain Capital Life Sciences Investors, LLC
Filing Date
Global Rank
#1,418
/ 8,232
▼ 55
Top Industry
Biotechnology
73.2%
3Y Alpha vs SPY
+6.2%
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
+104.7%
SPY
+76.3%
Annualised alpha
+6.2%
Max drawdown
−44.6%
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
18 positions · as of Mar 31, 2026 · Δ vs Dec 31, 2025Top Position
23.1%
−3.7 pts
Top 5
70.0%
−5.0 pts
Top 10
87.3%
−3.2 pts
HHI
1,303
Diversified−181
Portfolio Trend
25 quarters · across all stocks
Sector Breakdown
As of Mar 31, 2026| Sector | % Portfolio | Value |
|---|---|---|
| Healthcare | 100.0% | $1,101,227,906 |
Last Quarter's Activity
Export CSVAdded To
Positions the filer increased
1 positions
| Ticker | Company | Δ Shares | Shares | Value | Open |
|---|---|---|---|---|---|
| SLDB | Solid Biosciences Inc. | +1,897,150 | 9,808,819 | $70,623,496 | |
| No positions match the current search. | |||||
Trimmed
Positions the filer reduced
7 positions
| Ticker | Company | Δ Shares | Shares | Value | Open |
|---|---|---|---|---|---|
| HTFL | Heartflow, Inc. | −2,000,000 | 10,448,158 | $254,203,684 | |
| OLMA | Olema Pharmaceuticals, Inc. | −1,035,403 | 7,473,238 | $111,425,978 | |
| UPB | Upstream Bio, Inc. | −462,333 | 867,211 | $7,804,899 | |
| DNTH | Dianthus Therapeutics, Inc. /DE/ | −381,122 | 362,470 | $30,418,482 | |
| PHVS | Pharvaris N.V. | −126,572 | 2,675,509 | $75,583,129 | |
| AVIR | Atea Pharmaceuticals, Inc. | −125,000 | 2,360,638 | $12,700,232 | |
| ANNX | Annexon, Inc. | −36,395 | 5,212,674 | $28,878,213 | |
| No positions match the current search. | |||||
18 positions ·
$1,101,227,906 total
· as of Mar 31, 2026
| Ticker | Company | Type | Shares | Value (USD) | % of Portfolio | History |
|---|---|---|---|---|---|---|
| HTFL |
Heartflow, Inc.
Healthcare
|
Reduced | 10,448,158 | $254,203,684 | 23.08% | |
| NAMS |
NewAmsterdam Pharma Co N.V.
Healthcare
|
Held | 7,306,566 | $233,883,177 | 21.24% | |
| OLMA |
Olema Pharmaceuticals, Inc.
Healthcare
|
Reduced | 7,473,238 | $111,425,978 | 10.12% | |
| SVRA |
Savara Inc
Healthcare
|
Held | 17,600,621 | $96,099,390 | 8.73% | |
| PHVS |
Pharvaris N.V.
Healthcare
|
Reduced | 2,675,509 | $75,583,129 | 6.86% | |
| SLDB |
Solid Biosciences Inc.
Healthcare
|
Added | 9,808,819 | $70,623,496 | 6.41% | |
| XFOR |
X4 Pharmaceuticals, Inc
Healthcare
|
Held | 7,967,454 | $32,905,585 | 2.99% | |
| DNTH |
Dianthus Therapeutics, Inc. /DE/
Healthcare
|
Reduced | 362,470 | $30,418,482 | 2.76% | |
| ANNX |
Annexon, Inc.
Healthcare
|
Reduced | 5,212,674 | $28,878,213 | 2.62% | |
| KYTX |
Kyverna Therapeutics, Inc.
Healthcare
|
Held | 3,110,000 | $26,839,300 | 2.44% | |
| CABA |
Cabaletta Bio, Inc.
Healthcare
|
Held | 9,677,125 | $26,031,466 | 2.36% | |
| CNTA |
Centessa Pharmaceuticals plc
Healthcare
|
NEW | 635,000 | $25,222,200 | 2.29% | |
| ALKS |
Alkermes plc.
Healthcare
|
NEW | 610,000 | $21,569,600 | 1.96% | |
| RPID |
Rapid Micro Biosystems, Inc.
Healthcare
|
Held | 8,434,560 | $19,146,451 | 1.74% | |
| CCCC |
C4 Therapeutics, Inc.
Healthcare
|
Held | 7,171,910 | $18,862,123 | 1.71% | |
| AVIR |
Atea Pharmaceuticals, Inc.
Healthcare
|
Reduced | 2,360,638 | $12,700,232 | 1.15% | |
| IRON |
Disc Medicine, Inc.
Healthcare
|
NEW | 141,234 | $9,030,501 | 0.82% | |
| UPB |
Upstream Bio, Inc.
Healthcare
|
Reduced | 867,211 | $7,804,899 | 0.71% |