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Flagship Pioneering’s Foghorn Therapeutics FHTX Stock Holding History

Flagship Pioneering’s Portfolio FHTX Stock Details FHTX Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q1 		$60.6M Hold
12,674,120
– – 5.22% 4
2025
Q4 		$68.4M Hold
12,674,120
– – 21.12% 3
2025
Q3 		$62M Hold
12,674,120
– – 21.18% 3
2025
Q2 		$59.6M Hold
12,674,120
– – 22.19% 3
2025
Q1 		$46.3M Hold
12,674,120
– – 19.62% 2
2024
Q4 		$59.8M Hold
12,674,120
– – 17.9% 2
2024
Q3 		$118M Hold
12,674,120
– – 19.94% 2
2024
Q2 		$72.9M Hold
12,674,120
– – 8.64% 3
2024
Q1 		$85M Hold
12,674,120
– – 5.58% 4
2023
Q4 		$81.7M Hold
12,674,120
– – 6.17% 4
2023
Q3 		$63.4M Hold
12,674,120
– – 4.6% 3
2023
Q2 		$89.2M Hold
12,674,120
– – 3.98% 5
2023
Q1 		$78.6M Hold
12,674,120
– – 3.05% 5
2022
Q4 		$80.9M Hold
12,674,120
– – 2.58% 6
2022
Q3 		$109M Hold
12,674,120
– – 4.58% 5
2022
Q2 		$172M Hold
12,674,120
– – 6.49% 3
2022
Q1 		$193M Hold
12,674,120
– – 4.53% 4
2021
Q4 		$290M Hold
12,674,120
– – 4.48% 5
2021
Q3 		$177M Hold
12,674,120
– – 1.85% 5
2021
Q2 		$135M Hold
12,674,120
– – 1.73% 8
2021
Q1 		$167M Hold
12,674,120
– – 2.68% 7
2020
Q4 		$257M Buy
+12,674,120
New +$243M 4.68% 6

Other funds holding FHTX

Fidelity Investments
Fidelity Investments Boston, Massachusetts $1.9T AUM 41.92% 1-Year Est. Return
BI
BVF Inc San Francisco, California $3.14B AUM 249.53% 1-Year Est. Return
DM
Deerfield Management New York $8.48B AUM 99.04% 1-Year Est. Return
Raymond James Financial
Raymond James Financial St Petersburg, Florida $324B AUM 22.36% 1-Year Est. Return
BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
EC
Euclidean Capital New York $392M AUM 31.85% 1-Year Est. Return
VCM
Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return
SL
Siren LLC Greenwich, Connecticut $3.61B AUM 203.3% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return

Flagship Pioneering's FHTX Position: Q1 2026 in Review

Flagship Pioneering held its Foghorn Therapeutics (FHTX) position steady in Q1 2026 at 12,674,120 shares worth $60.6M. The position accounts for 5.22% of the portfolio, ranked #4.

Flagship Pioneering first reported a position in FHTX in Q4 2020 and has held it in 22 quarters since. The position peaked at $290M in Q4 2021. 105 funds tracked by Wall St. Rank hold FHTX as of Q1 2026.

  • Flagship Pioneering held 12,674,120 shares of Foghorn Therapeutics worth $60.6M as of Q1 2026.
  • Flagship Pioneering left its Foghorn Therapeutics share count unchanged in Q1 2026.
  • Foghorn Therapeutics made up 5.22% of Flagship Pioneering's portfolio in Q1 2026, its #4 holding.
  • Flagship Pioneering first reported a position in Foghorn Therapeutics in Q4 2020 and has held it in 22 quarters since.
  • Flagship Pioneering's Foghorn Therapeutics position peaked at $290M in Q4 2021.
  • 105 funds tracked by Wall St. Rank held Foghorn Therapeutics as of Q1 2026.

Based on Flagship Pioneering's 13F filing for Q1 2026, filed 15 May 2026.