Latest Atlas Venture Life Science Advisors, LLC Stock Portfolio
$790Million | No. of Holdings #6
Atlas Venture Life Science Advisors, LLC Performance
2026 Q1-0.51%
YTD-0.51%
2025+35.87%
About Atlas Venture Life Science Advisors, LLC and 13F Hedge Fund Stock Holdings
On 2026-05-14, the fund reported it's updated stock portfolio. In the 13F Holdings report, Atlas Venture Life Science Advisors, LLC reported an equity portfolio of $790 Millions as of 31 Mar, 2026. <br><br> The top stock holdings of Atlas Venture Life Science Advisors, LLC are KYMR, DYN, . The fund has invested 48.3% of it's portfolio in KYMERA THERAPEUTICS, INC. and 21% of portfolio in DYNE THERAPEUTICS, INC. <br><br> The fund managers got completely rid off DAY ONE BIOPHARMACEUTICALS, INC. (DAWN) and GENERATION BIO, CO. (GBIO) stocks. They significantly reduced their stock positions in KYMERA THERAPEUTICS, INC. (KYMR).
Atlas Venture Life Science Advisors, LLC Equity Portfolio Value
Last Reported on: 14 May, 2026
$790Million
as of May 14, 2026Atlas Venture Life Science Advisors, LLC Annual Return Estimates Vs S&P 500
Our best estimate is that Atlas Venture Life Science Advisors, LLC made a return of -0.51% in the last quarter. In trailing 12 months, it's portfolio return was 123.28%.
- Performance
- S&P 500
New Buys
No new stocks were added by Atlas Venture Life Science Advisors, LLC
Additions
No additions were made to existing positions by Atlas Venture Life Science Advisors, LLC
Reductions
| Ticker | % Reduced |
|---|---|
| kymera therapeutics, inc. | -1.76 |
Atlas Venture Life Science Advisors, LLC reduced stake in above stock
Sold off
| Ticker | $ Sold |
|---|---|
| day one biopharmaceuticals, inc. | -59,765,100 |
| generation bio, co. | -4,702,730 |
Atlas Venture Life Science Advisors, LLC got rid off the above stocks
Sector Distribution
Atlas Venture Life Science Advisors, LLC has about 69.2% of it's holdings in Healthcare sector.
- Healthcare
- Others
| Sector | % |
|---|---|
| Healthcare | 69.2 |
| Others | 30.8 |
Market Cap. Distribution
Atlas Venture Life Science Advisors, LLC has about 0% of it's portfolio invested in the large-cap and mega-cap stocks.
- MID-CAP
- UNALLOCATED
| Category | % |
|---|---|
| MID-CAP | 69.2 |
| UNALLOCATED | 30.8 |
Stocks belong to which Index?
About 69.2% of the stocks held by Atlas Venture Life Science Advisors, LLC either belong to S&P 500 or RUSSELL 2000 index.
- RUSSELL 2000
- Others
| Index | % |
|---|---|
| RUSSELL 2000 | 69.2 |
| Others | 30.8 |
| Top 5 Winners (%) | % | |
|---|---|---|
q32 bio, inc. | 93.4 % | |
korro bio, inc. | 41.3 % | |
| KYMR | kymera therapeutics, inc. | 7.0 % |
| Top 5 Winners ($) | $ | |
|---|---|---|
| KYMR | kymera therapeutics, inc. | 25.3 M |
q32 bio, inc. | 6.5 M | |
korro bio, inc. | 3.8 M | |
| Top 5 Losers (%) | % | |
|---|---|---|
disc medicine, inc. | -19.5 % | |
| DYN | dyne therapeutics, inc. | -7.3 % |
sionna therapeutics, inc. | -2.5 % | |
| Top 5 Losers ($) | $ | |
|---|---|---|
disc medicine, inc. | -23.4 M | |
| DYN | dyne therapeutics, inc. | -13.1 M |
sionna therapeutics, inc. | -3.1 M | |
Atlas Venture Life Science Advisors, LLC Holdings Map
This heatmap illustrates the top 50 positions within the fund's portfolio.
Current Stock Holdings of Atlas Venture Life Science Advisors, LLC
Atlas Venture Life Science Advisors, LLC has 6 stocks in it's portfolio. proved to be the most loss making stock for the portfolio. KYMR was the most profitable stock for Atlas Venture Life Science Advisors, LLC last quarter.
$790.03MTotal Value
8.00Positions
14 May, 2026Last Reported
| Expand | Holdingsorted ascending | % Portfolio | Shares Held | $ Value | % Change |
|---|---|---|---|---|---|
 Day One Biopharmaceuticals, Inc. Atlas Venture Life Science Advisors, LLC's holding in Day One Biopharmaceuticals, Inc. over time | 0% | 0.00 | $0.00 0% | 100%decreased 100 percentsold off | |
 Dyne Therapeutics, Inc. Atlas Venture Life Science Advisors, LLC's holding in Dyne Therapeutics, Inc. over time | 20.95% | 9,130,460 | $165.53M 20.95% | 0%unchanged 0 percentunchanged | |
 Generation Bio, Co. Atlas Venture Life Science Advisors, LLC's holding in Generation Bio, Co. over time | 0% | 0.00 | $0.00 0% | 100%decreased 100 percentsold off | |
 Kymera Therapeutics, Inc. Atlas Venture Life Science Advisors, LLC's holding in Kymera Therapeutics, Inc. over time | 48.26% | 4,578,010 | $381.30M 48.26% | 1.76%decreased 1.76 percentreduced | |
Common Stock Sionna Therapeutics, Inc.Sionna Therapeutics, Inc. | 15.2% | 2,995,600 | $120.09M 15.2% | 0%unchanged 0 percentunchanged | |
Common Stock Disc Medicine, Inc.Disc Medicine, Inc. | 12.25% | 1,513,880 | $96.80M 12.25% | 0%unchanged 0 percentunchanged | |
Common Stock Q32 Bio, Inc.Q32 Bio, Inc. | 1.7% | 2,092,110 | $13.43M 1.7% | 0%unchanged 0 percentunchanged | |
Common Stock Korro Bio, Inc.Korro Bio, Inc. | 1.63% | 1,137,150 | $12.87M 1.63% | 0%unchanged 0 percentunchanged | |