Flagship Pioneering is based out of Cambridge. Flagship Pioneering is a registered investment advisory firm Their last reported 13F filing for Q1 2025 included $235,769,323 in managed 13F securities
and a top 10 holdings concentration of 100.0%. Flagship Pioneering's largest holding is Moderna Inc with shares held of 4,632,149. Whalewisdom has at least 35 13F filings, and 4 Form 4 filings

2025-03-31
Top Buys (13F)
Name | % Change |
---|

2025-03-31
Top Sells (13F)
Name | % Change |
---|---|
OMGAQ Omega Therapeutics I | 6.52% |

2025-03-31
13F Holdings Summary
Name | $ Change |
---|---|
MRNA Moderna Inc | 55.7% |
FHTX Foghorn Therapeutics | 19.62% |
SANA Sana Biotechnology I | 17.82% |
MCRB Seres Therapeutics I | 6.86% |

2025-03-31
13F Activity
Market Value | $236m, Prior: $334m |
Inflows (Outflows) as % of Total MV | (-6.5198)% |
New Purchases | 0 stocks |
Added To | 0 stocks |
Sold out of | 1 stocks |
Reduced holdings in | 0 stocks |
Top 10 Holdings % | 100% |
Turnover %[1] | 20% |
Turnover Alt %[2] | 0% |
Time Held Top 20 | 23 quarters |
Time Held Top 10 | 23 quarters |
Time Held All | 23 quarters |
[1]: Turnover is calculated by taking the # of new holdings (initial purchases) + the # of positions sold out of (not just reduced) divided by the total # of holdings for the quarter.
[2]: Alt Turnover is calculated by taking either the total MV of new purchases or the MV of securities sold, whichever is less, divided by the total MV of the fund.

2025-03-31
13F Sector Allocation Over Time
limited to past 4 quarters. Subscribe to see all available data

2025-03-31
Analysis

Top 20 equal-weighted holdings. Performance numbers calculated through 2025-03-31