Latest Bain Capital Life Sciences Investors, LLC Stock Portfolio
Bain Capital Life Sciences Investors, LLC Performance:
2025 Q3: 38.07%YTD: 18.77%2024: -6.61%
Performance for 2025 Q3 is 38.07%, and YTD is 18.77%, and 2024 is -6.61%.
About Bain Capital Life Sciences Investors, LLC and 13F Hedge Fund Stock Holdings
In it's latest 13F Holdings report, Bain Capital Life Sciences Investors, LLC reported an equity portfolio of $1.5 Billions as of 30 Sep, 2025.
The top stock holdings of Bain Capital Life Sciences Investors, LLC are , NAMS, CDTX. The fund has invested 27.8% of it's portfolio in HEARTFLOW INC and 20.2% of portfolio in NEWAMSTERDAM PHARMA COMPANY.
The fund managers got completely rid off NUVALENT INC (NUVL), DISC MEDICINE INC and MERSANA THERAPEUTICS INC (MRSN) stocks. They significantly reduced their stock positions in DIANTHUS THERAPEUTICS INC, CENTURY THERAPEUTICS INC (IPSC) and PHARVARIS N V (PHVS). Bain Capital Life Sciences Investors, LLC opened new stock positions in HEARTFLOW INC and MERSANA THERAPEUTICS INC (MRSN). The fund showed a lot of confidence in some stocks as they added substantially to X4 PHARMACEUTICALS INC (XFOR) and CIDARA THERAPEUTICS INC (CDTX).
The top stock holdings of Bain Capital Life Sciences Investors, LLC are , NAMS, CDTX. The fund has invested 27.8% of it's portfolio in HEARTFLOW INC and 20.2% of portfolio in NEWAMSTERDAM PHARMA COMPANY.
The fund managers got completely rid off NUVALENT INC (NUVL), DISC MEDICINE INC and MERSANA THERAPEUTICS INC (MRSN) stocks. They significantly reduced their stock positions in DIANTHUS THERAPEUTICS INC, CENTURY THERAPEUTICS INC (IPSC) and PHARVARIS N V (PHVS). Bain Capital Life Sciences Investors, LLC opened new stock positions in HEARTFLOW INC and MERSANA THERAPEUTICS INC (MRSN). The fund showed a lot of confidence in some stocks as they added substantially to X4 PHARMACEUTICALS INC (XFOR) and CIDARA THERAPEUTICS INC (CDTX).
Bain Capital Life Sciences Investors, LLC Annual Return Estimates Vs S&P 500
Our best estimate is that Bain Capital Life Sciences Investors, LLC made a return of 38.07% in the last quarter. In trailing 12 months, it's portfolio return was 17.32%.
New Buys
| Ticker | $ Bought |
|---|---|
| heartflow inc | 419,005,000 |
| mersana therapeutics inc | 2,689,190 |
New stocks bought by Bain Capital Life Sciences Investors, LLC
Additions
| Ticker | % Inc. |
|---|---|
| x4 pharmaceuticals inc | 332 |
| cidara therapeutics inc | 20.81 |
Additions to existing portfolio by Bain Capital Life Sciences Investors, LLC
Reductions
| Ticker | % Reduced |
|---|---|
| dianthus therapeutics inc | -46.99 |
| century therapeutics inc | -34.6 |
| pharvaris n v | -3.7 |
Bain Capital Life Sciences Investors, LLC reduced stake in above stock
Sold off
| Ticker | $ Sold |
|---|---|
| invivyd inc | -1,286,710 |
| nuvalent inc | -110,426,000 |
| disc medicine inc | -30,902,200 |
| mersana therapeutics inc | -2,564,450 |
Bain Capital Life Sciences Investors, LLC got rid off the above stocks
Sector Distribution
Bain Capital Life Sciences Investors, LLC has about 59.1% of it's holdings in Healthcare sector.
| Sector | % |
|---|---|
| Healthcare | 59.1 |
| Others | 40.9 |
Market Cap. Distribution
Bain Capital Life Sciences Investors, LLC has about 0% of it's portfolio invested in the large-cap and mega-cap stocks.
| Category | % |
|---|---|
| UNALLOCATED | 61.2 |
| MICRO-CAP | 20.5 |
| SMALL-CAP | 16.1 |
| NANO-CAP | 2.1 |
Stocks belong to which Index?
About 14% of the stocks held by Bain Capital Life Sciences Investors, LLC either belong to S&P 500 or RUSSELL 2000 index.
| Index | % |
|---|---|
| Others | 86 |
| RUSSELL 2000 | 14 |
Bain Capital Life Sciences Investors, LLC Holdings Map
This heatmap illustrates the top 50 positions within the fund's portfolio.
Current Stock Holdings of Bain Capital Life Sciences Investors, LLC
Bain Capital Life Sciences Investors, LLC has 21 stocks in it's portfolio. About 92.7% of the portfolio is in top 10 stocks. AVIR proved to be the most loss making stock for the portfolio. CDTX was the most profitable stock for Bain Capital Life Sciences Investors, LLC last quarter.
Last Reported on: 14 Nov, 2025| Ticker | Namesorted ascending | % Portfolio | Shares Held | $ Value | Type | % Change | Options | |
|---|---|---|---|---|---|---|---|---|
| ADGI | invivyd inc | 0.00 | 0.00 | 0.00 | sold off | -100 | ||
| ANNX | annexon inc | 1.06 | 5,249,070 | 16,009,700 | unchanged | 0.00 | ||
| AVIR | atea pharmaceuticals inc | 0.48 | 2,485,640 | 7,208,350 | unchanged | 0.00 | ||
| CABA | cabaletta bio inc | 1.50 | 9,677,120 | 22,644,500 | unchanged | 0.00 | ||
| CCCC | c4 therapeutics inc | 0.16 | 1,111,910 | 2,468,440 | unchanged | 0.00 | ||
| CDTX | cidara therapeutics inc | 19.20 | 3,020,990 | 289,290,000 | added | 20.81 | ||
| IPSC | century therapeutics inc | 0.12 | 3,538,610 | 1,762,230 | reduced | -34.6 | ||
| MRSN | mersana therapeutics inc | 0.18 | 346,545 | 2,689,190 | new | |||
| MRSN | mersana therapeutics inc | 0.00 | 0.00 | 0.00 | sold off | -100 | ||
| NAMS | newamsterdam pharma company | 20.23 | 10,719,100 | 304,851,000 | unchanged | 0.00 | ||
| NAMS | newamsterdam pharma company | 0.11 | 100,000 | 1,711,000 | unchanged | 0.00 | ||
| NUVL | nuvalent inc | 0.00 | 0.00 | 0.00 | sold off | -100 | ||
| OLMA | olema pharmaceuticals inc | 4.45 | 6,843,950 | 67,002,300 | unchanged | 0.00 | ||
| PHVS | pharvaris n v | 5.27 | 3,181,280 | 79,372,800 | reduced | -3.7 | ||
| RPID | rapid micro biosystems inc | 1.87 | 8,434,560 | 28,171,400 | unchanged | 0.00 | ||
| SLDB | solid biosciences inc | 3.24 | 7,911,670 | 48,815,000 | unchanged | 0.00 | ||
| SVRA | savara inc | 4.17 | 17,600,600 | 62,834,200 | unchanged | 0.00 | ||
| TNGX | tango therapeutics inc | 1.51 | 2,712,010 | 22,780,900 | unchanged | 0.00 | ||
| XFOR | x4 pharmaceuticals inc | 0.55 | 2,436,590 | 8,333,130 | added | 332 | ||
| XLO | xilio therapeutics inc | 0.26 | 4,566,820 | 3,848,460 | unchanged | 0.00 | ||