FP
GENB

Flagship Pioneering’s Generate Biomedicines GENB Stock Holding History

Flagship Pioneering’s Portfolio GENB Stock Details GENB Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q2 		$1.06B Hold
62,673,117
– – 68.66% 1
2026
Q1 		$783M Buy
+62,673,117
New +$765M 67.44% 1

Other funds holding GENB

Fidelity Investments
Fidelity Investments Boston, Massachusetts $2.3T AUM 54.33% 1-Year Est. Return
Capital World Investors
Capital World Investors Los Angeles, California $846B AUM 46.74% 1-Year Est. Return
B
Braidwell Stamford, Connecticut $2.7B AUM 88.53% 1-Year Est. Return
T. Rowe Price Associates
T. Rowe Price Associates Baltimore, Maryland $999B AUM 46.22% 1-Year Est. Return
Norges Bank
Norges Bank Oslo, Norway $1T AUM
AVM
Arch Venture Management Chicago, Illinois $1.1B AUM 356.62% 1-Year Est. Return
HP
Harbourvest Partners Boston, Massachusetts $170M AUM 34.45% 1-Year Est. Return
BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
BBA
Baker Bros. Advisors New York $20B AUM 154.41% 1-Year Est. Return
JP Morgan Chase
JP Morgan Chase New York $1.81T AUM 41.13% 1-Year Est. Return

Flagship Pioneering's GENB Position: Q2 2026 in Review

Flagship Pioneering held its Generate Biomedicines (GENB) position steady in Q2 2026 at 62,673,117 shares worth $1.06B. The position accounts for 68.66% of the portfolio, ranked #1.

Flagship Pioneering first reported a position in GENB in Q1 2026 and has held it in 2 quarters since. 86 funds tracked by Wall St. Rank hold GENB as of Q2 2026.

  • Flagship Pioneering held 62,673,117 shares of Generate Biomedicines worth $1.06B as of Q2 2026.
  • Flagship Pioneering left its Generate Biomedicines share count unchanged in Q2 2026.
  • Generate Biomedicines made up 68.66% of Flagship Pioneering's portfolio in Q2 2026, its #1 holding.
  • Flagship Pioneering first reported a position in Generate Biomedicines in Q1 2026 and has held it in 2 quarters since.
  • 86 funds tracked by Wall St. Rank held Generate Biomedicines as of Q2 2026.

Based on Flagship Pioneering's 13F filing for Q2 2026, filed 14 Aug 2026.