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Asset Manager ← All Institutions

Flagship Pioneering, LLC

Q2 2026 · Filed 2026-08-14

Q2 2026 Q1 2026 Q4 2025 Q3 2025

Market Value

$1.5B

+32.6%

Holdings

New Purchases

Added To

Closed

Reduced

Top 10 Concentration

100.0%

Turnover

0.0%

Top Buys (by % of Portfolio)

Symbol	Cur %	Prior %	Chg %	Value
GENB	68.66%	67.44%	+1.21%	$1.1B
MRNA	21.07%	20.26%	+0.81%	$324M

Top Sells (by % of Portfolio)

Symbol	Cur %	Prior %	Chg %	Value
FHTX	4.02%	5.22%	-1.20%	$62M
SANA	5.67%	6.20%	-0.53%	$87M
MCRB	0.59%	0.88%	-0.29%	$9M

Sector Allocation Over Time

Market Cap Concentration

Tier	Holdings	Value	Weight
Large Cap	1	$324M	21.1%
Small Cap	2	$1.1B	74.3%
Micro Cap	2	$71M	4.6%

Portfolio Analytics

Avg Market Cap

$15.6B

Median Market Cap

$804M

Avg P/E

—

Median P/E

—

Avg Dividend Yield

—%

Avg Beta

1.19

# Stocks

# ETFs / Funds

Top Holdings (5 total)

#	Symbol	% Port	Shares	Value	Avg Price	Q/Q Value Chg	Share Chg	Chg %
1	GENB	68.66%	62,673,117	$1.1B	$16.87	$274M	—	—
2	MRNA	21.07%	4,632,149	$324M	$70.03	$89M	—	—
3	SANA	5.67%	25,001,856	$87M	$3.49	$15M	—	—
4	FHTX	4.02%	12,674,120	$62M	$4.88	$1M	—	—
5	MCRB	0.59%	1,155,850	$9M	$7.89	-$1M	—	—

View SEC EDGAR Filings for Flagship Pioneering, LLC →