Atlas Venture Advisors, Inc.

In its 13F for Q3 2024 (holdings as of September 30, 2024, filed October 31, 2024), Atlas Venture Advisors, Inc. reported 5 stock positions worth $484.4 million. Its top holding was Integral Ad Science (IAS) at 50.7% of the portfolio, followed by Draftkings Class A (DKNG, 47.7%) and Roku (ROKU, 0.9%). Compared with Q2 2024, it reduced 1. The biggest sale was Larimar Therapeutics (LRMR, shares −35%).

Most Recent 13F
Q2 2026
Location
BOSTON, MA
CIK
0001767432
Portfolio Value
$484.4M (Q3 2024)
SEC Filing
0001104659-24-112905 ↗ filed Oct 31, 2024

Holdings Value

0$200.0M$400.0M$600.0M Q1 2024: $502.6M Q1 2024 Q2 2024: $454.6M Q2 2024 Q3 2024: $484.4M $484.4M Q3 2024 Q4 2024: $463.4M Q4 2024 Q1 2025: $366.0M Q1 2025 Q2 2025: $424.2M Q2 2025 Q3 2025: $437.7M Q3 2025 Q4 2025: $191.6M Q4 2025 Q1 2026: $121.6M Q1 2026 Q2 2026: $143.4M Q2 2026

Holdings 5 stocks · $484.4M
IAS Integral Ad Science Holding 50.71% 22,722,770 $245.6M No change
DKNG Draftkings Inc. Class A 47.70% 5,894,409 $231.1M No change
ROKU Roku Inc. 0.89% 57,707 $4.3M No change
SNAP Snap Inc. Class A 0.54% 245,559 $2.6M No change
LRMR Larimar Therapeutics Inc. 0.15% 112,184 $735K Reduce -34.9%

Portfolio Sells Q2 2024 → Q3 2024
LRMR Larimar Therapeutics Inc. Reduce -34.9% 0.15% −0.12

Portfolio Buys Q2 2024 → Q3 2024
None this quarter.

All Filings

QuarterPositions13F Reported ValueTop Holdings
Q2 2026 3$143.4MDKNG, ROKU, SNAP
Q1 2026 3$121.6MDKNG, ROKU, SNAP
Q4 2025 3$191.6MDKNG, ROKU, SNAP
Q3 2025 4$437.7MIAS, DKNG, ROKU, SNAP
Q2 2025 4$424.2MDKNG, IAS, ROKU, SNAP
Q1 2025 4$366.0MIAS, DKNG, ROKU, SNAP
Q4 2024 4$463.4MIAS, DKNG, ROKU, SNAP
Q3 2024 5$484.4MIAS, DKNG, ROKU, SNAP, LRMR
Q2 2024 5$454.6MDKNG, IAS, SNAP, ROKU, LRMR
Q1 2024 5$502.6MDKNG, IAS, ROKU, SNAP, LRMR