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Flagship Pioneering, LLC

Institutional InvestorSimilar funds →SEC EDGAR: CIK 1400240
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13F Reported Value

ⓘ

$1.5B

Holdings

5

Latest Filing

2026-06-30

Filing Quarter

Q2 2026

Portfolio Overview

Flagship Pioneering, LLC disclosed 5 positions worth $1.5B in its Form 13F-HR for Q2 2026, led by $GENB (Generate Biomedicines, Inc.) at 68.7% of the equity portfolio, followed by $MRNA and $SANA. The portfolio is most concentrated in Healthcare (100.0% of disclosed assets). All figures are sourced directly from Flagship Pioneering, LLC’s Form 13F-HR filing with the SEC under CIK 1400240.

AI Fund Analysis

Stable
MRNA$MRNA
21.1% weight
Held 10 quarters
SANA$SANA
5.7% weight
Held 10 quarters
FHTX$FHTX
4.0% weight
Held 10 quarters
MCRB$MCRB
0.6% weight
Held 5 quarters

Sector Allocation

Healthcare

AUM History

Top Equity Holdings by Value

Quarterly Activity — Q2 2026

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Top Holdings

AI Quality Scored

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32-signal composite ranking on each of Flagship Pioneering, LLC's 5 positions.

Showing top 5 of 5 holdings.

Sector Allocation

Healthcare

$1.5B

Full Holdings — Flagship Pioneering, LLC (Q2 2026)

All 5 disclosed positions from the latest Form 13F-HR, with quarter-over-quarter share changes and 13F Pro quality scores. Sourced from SEC EDGAR.

TickerCompanyValue
GENB$GENBGenerate Biomedicines, Inc.$1.1B
MRNA$MRNAModerna, Inc.$324.4M
SANA$SANASana Biotechnology, Inc.$87.3M
FHTX$FHTXFoghorn Therapeutics Inc.$61.8M
MCRB$MCRBSeres Therapeutics, Inc.$9.1M

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AI-Powered Hedge Fund Analysis: Flagship Pioneering, LLC

13F Pro is an AI hedge fund tracker and stock research platform. For Flagship Pioneering, LLC (SEC CIK: 1400240), the platform ingests every quarterly Form 13F filing and applies AI-powered analysis on top — 10 specialized AI analysts (value, growth, momentum, macro, activist, and more) debate the fund's top positions and publish AI-generated analysis with cited SEC sources.

Every holding in Flagship Pioneering, LLC's portfolio is scored on a 32-signal AI quality ranking (ROIC, FCF margin, revenue growth, institutional flow, earnings quality, shareholder dilution, and more). Track accumulation and distribution quarter over quarter, identify conviction positions, and see AI stock analysis for each position — alongside 8,700+ other institutional filers and 2,800+ AI-ranked companies.