Manager × security

Flagship Pioneering, LLC MRNA holdings history

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MODERNA INC · CUSIP 60770K107 · CIK 1400240

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, Flagship Pioneering, LLC reported 4.63M MRNA (shares), valued at $324.39M, or 21.07% of its reported non-derivative portfolio. Filed 2026-08-14.

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Portfolio weight and quantity history
Reported portfolio weight
21.07%
Shares
4.63M
4,632,149
Reported value
$324.39M
USD

Shares unchanged; reported value increased 37.85%, and weight changed +0.81 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 202621.07%4,632,149SEC filing ↗Filed Aug 14, 2026
Q1 202620.26%4,632,149SEC filing ↗Filed May 15, 2026
Q4 202542.16%4,632,149SEC filing ↗Filed Feb 17, 2026
Q3 202540.89%4,632,149SEC filing ↗Filed Nov 14, 2025
Q2 202547.60%4,632,149SEC filing ↗Filed Aug 14, 2025
Q1 202555.70%4,632,149SEC filing ↗Filed May 15, 2025
Q4 202457.63%4,632,149SEC filing ↗Filed Feb 14, 2025
Q3 202452.30%4,632,149SEC filing ↗Filed Nov 14, 2024
Q2 202465.22%4,632,149SEC filing ↗Filed Aug 14, 2024
Q1 202467.56%9,666,038SEC filing ↗Filed May 15, 2024
Q4 202372.53%9,666,038SEC filing ↗Filed Feb 14, 2024
Q3 202372.47%9,666,038SEC filing ↗Filed Nov 14, 2023

History & evidence by quarter

QuarterWeightQuantityValueChange explainedSource
Q3 202372.47%9,666,038$998.41MThe prior quarter is outside the free window. Sign in for the comparison.SEC filing ↗
Filed Nov 14, 2023
Q4 202372.53%9,666,038$961.29MShares unchanged; reported value decreased 3.72%, and weight changed +0.06 pp. Weight depends on both the security valuation and total portfolio value, not trade proceeds.SEC filing ↗
Filed Feb 14, 2024
Q1 202467.56%9,666,038$1.03BShares unchanged; reported value increased 7.15%, and weight changed -4.97 pp. Weight depends on both the security valuation and total portfolio value, not trade proceeds.SEC filing ↗
Filed May 15, 2024
Q2 202465.22%4,632,149$550.07MShares decreased 52.08%; reported value decreased 46.60%, and weight changed -2.34 pp. Weight depends on both the security valuation and total portfolio value, not trade proceeds.SEC filing ↗
Filed Aug 14, 2024
Q3 202452.30%4,632,149$309.57MShares unchanged; reported value decreased 43.72%, and weight changed -12.92 pp. Weight depends on both the security valuation and total portfolio value, not trade proceeds.SEC filing ↗
Filed Nov 14, 2024
Q4 202457.63%4,632,149$192.60MShares unchanged; reported value decreased 37.78%, and weight changed +5.33 pp. Weight depends on both the security valuation and total portfolio value, not trade proceeds.SEC filing ↗
Filed Feb 14, 2025
Q1 202555.70%4,632,149$131.32MShares unchanged; reported value decreased 31.82%, and weight changed -1.93 pp. Weight depends on both the security valuation and total portfolio value, not trade proceeds.SEC filing ↗
Filed May 15, 2025
Q2 202547.60%4,632,149$127.80MShares unchanged; reported value decreased 2.68%, and weight changed -8.10 pp. Weight depends on both the security valuation and total portfolio value, not trade proceeds.SEC filing ↗
Filed Aug 14, 2025
Q3 202540.89%4,632,149$119.65MShares unchanged; reported value decreased 6.38%, and weight changed -6.71 pp. Weight depends on both the security valuation and total portfolio value, not trade proceeds.SEC filing ↗
Filed Nov 14, 2025
Q4 202542.16%4,632,149$136.60MShares unchanged; reported value increased 14.17%, and weight changed +1.27 pp. Weight depends on both the security valuation and total portfolio value, not trade proceeds.SEC filing ↗
Filed Feb 17, 2026
Q1 202620.26%4,632,149$235.31MShares unchanged; reported value increased 72.26%, and weight changed -21.90 pp. Weight depends on both the security valuation and total portfolio value, not trade proceeds.SEC filing ↗
Filed May 15, 2026
Q2 202621.07%4,632,149$324.39MShares unchanged; reported value increased 37.85%, and weight changed +0.81 pp. Weight depends on both the security valuation and total portfolio value, not trade proceeds.SEC filing ↗
Filed Aug 14, 2026
Flagship Pioneering, LLC · MODERNA 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.