Manager × security

Atlas Venture Life Science Advisors, LLC IRON holdings history

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DISC MEDICINE INC · CUSIP 254604101 · CIK 1917529

This is the oldest quarter open without an account, so changes against the quarter before it are withheld. Sign in to see them.
Citable facts

As of 2026-06-30, Atlas Venture Life Science Advisors, LLC reported 1.51M IRON (shares), valued at $110.72M, or 12.56% of its reported non-derivative portfolio. Filed 2026-08-13.

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Portfolio weight and quantity history
Reported portfolio weight
12.56%
Shares
1.51M
1,513,875
Reported value
$110.72M
USD

Shares unchanged; reported value increased 14.39%, and weight changed +0.31 pp. Weight depends on both the security valuation and total portfolio value, not trade proceeds.

Left: % · Right: Shares · Independently scaled axes

Exact data and methodology

Axes scale independently; a crossing does not mean equal values. Weight uses each quarter's total reported non-derivative value. Same CUSIP; missing quarters are gaps, not zero. Revised history may include later disclosures.

QuarterWeightQuantitySource
Q2 202612.56%1,513,875SEC filing ↗Filed Aug 13, 2026
Q1 202612.25%1,513,875SEC filing ↗Filed May 14, 2026
Q4 202513.90%1,513,875SEC filing ↗Filed Feb 13, 2026
Q3 202518.81%2,142,617SEC filing ↗Filed Nov 13, 2025
Q2 202519.07%2,384,456SEC filing ↗Filed Aug 12, 2025
Q1 202522.69%2,384,456SEC filing ↗Filed May 14, 2025
Q4 202419.41%2,509,456SEC filing ↗Filed Feb 6, 2025
Q3 202411.43%2,509,456SEC filing ↗Filed Nov 13, 2024
Q2 202411.91%2,509,456SEC filing ↗Filed Aug 9, 2024
Q1 202413.14%2,287,233SEC filing ↗Filed May 6, 2024
Q4 202317.58%2,555,172SEC filing ↗Filed Feb 9, 2024

History & evidence by quarter

QuarterWeightQuantityValueChange explainedSource
Q4 202317.58%2,555,172$147.59MThe prior quarter is outside the free window. Sign in for the comparison.SEC filing ↗
Filed Feb 9, 2024
Q1 202413.14%2,287,233$142.40MShares decreased 10.49%; reported value decreased 3.51%, and weight changed -4.44 pp. Weight depends on both the security valuation and total portfolio value, not trade proceeds.SEC filing ↗
Filed May 6, 2024
Q2 202411.91%2,509,456$113.10MShares increased 9.72%; reported value decreased 20.58%, and weight changed -1.23 pp. Weight depends on both the security valuation and total portfolio value, not trade proceeds.SEC filing ↗
Filed Aug 9, 2024
Q3 202411.43%2,509,456$123.31MShares unchanged; reported value increased 9.03%, and weight changed -0.48 pp. Weight depends on both the security valuation and total portfolio value, not trade proceeds.SEC filing ↗
Filed Nov 13, 2024
Q4 202419.41%2,509,456$159.10MShares unchanged; reported value increased 29.02%, and weight changed +7.98 pp. Weight depends on both the security valuation and total portfolio value, not trade proceeds.SEC filing ↗
Filed Feb 6, 2025
Q1 202522.69%2,384,456$118.36MShares decreased 4.98%; reported value decreased 25.60%, and weight changed +3.28 pp. Weight depends on both the security valuation and total portfolio value, not trade proceeds.SEC filing ↗
Filed May 14, 2025
Q2 202519.07%2,384,456$126.28MShares unchanged; reported value increased 6.69%, and weight changed -3.62 pp. Weight depends on both the security valuation and total portfolio value, not trade proceeds.SEC filing ↗
Filed Aug 12, 2025
Q3 202518.81%2,142,617$141.58MShares decreased 10.14%; reported value increased 12.12%, and weight changed -0.26 pp. Weight depends on both the security valuation and total portfolio value, not trade proceeds.SEC filing ↗
Filed Nov 13, 2025
Q4 202513.90%1,513,875$120.22MShares decreased 29.34%; reported value decreased 15.09%, and weight changed -4.91 pp. Weight depends on both the security valuation and total portfolio value, not trade proceeds.SEC filing ↗
Filed Feb 13, 2026
Q1 202612.25%1,513,875$96.80MShares unchanged; reported value decreased 19.48%, and weight changed -1.65 pp. Weight depends on both the security valuation and total portfolio value, not trade proceeds.SEC filing ↗
Filed May 14, 2026
Q2 202612.56%1,513,875$110.72MShares unchanged; reported value increased 14.39%, and weight changed +0.31 pp. Weight depends on both the security valuation and total portfolio value, not trade proceeds.SEC filing ↗
Filed Aug 13, 2026
Atlas Venture Life Science Advisors, LLC · DISC MEDICINE INC

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Figures are as reported to the SEC and merged with later amendments where Akkru could match them. Preview limits apply to what is listed, not to the totals, which come from the complete reported data. Nothing is zero-filled: a missing quarter or month is shown as missing.

13F reports quarter-end long positions in securities traded on US exchanges, filed by managers holding at least $100 million of such securities; it is not the manager's full portfolio, not assets under management, and value changes are not returns. Weights use the reported total value as denominator. Option rows show notional value, not premium or net exposure. Amendments are merged into the quarter when Akkru could match them.