TSS
GBIO

Two Sigma Securities’s Generation Bio GBIO Stock Holding History

Two Sigma Securities’s Portfolio GBIO Stock Details GBIO Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2025
Q3 		– Sell
-3,267
Closed -$10.5K – 1621
2025
Q2 		$10.5K Buy
+3,267
New +$12.6K ﹤0.01% 1294

Other funds holding GBIO

AVLSA
Atlas Venture Life Science Advisors Cambridge, Massachusetts $790M AUM 223.66% 1-Year Est. Return
T. Rowe Price Associates
T. Rowe Price Associates Baltimore, Maryland $865B AUM 30.76% 1-Year Est. Return
Renaissance Technologies
Renaissance Technologies New York $63.9B AUM 45.56% 1-Year Est. Return
SL
Siren LLC Greenwich, Connecticut $3.61B AUM 203.3% 1-Year Est. Return
Vanguard Group
Vanguard Group Malvern, Pennsylvania $6.9T AUM 27.45% 1-Year Est. Return
Marshall Wace
Marshall Wace London, United Kingdom $100B AUM 35.1% 1-Year Est. Return
BBA
Baker Bros. Advisors New York $17.4B AUM 131.5% 1-Year Est. Return
Morgan Stanley
Morgan Stanley New York $1.66T AUM 25.57% 1-Year Est. Return
UBS Group
UBS Group Zurich, Switzerland $666B AUM 30.12% 1-Year Est. Return
Acadian Asset Management
Acadian Asset Management Boston, Massachusetts $84.2B AUM 55.88% 1-Year Est. Return

Two Sigma Securities's GBIO Position: Q3 2025 in Review

Two Sigma Securities sold out of Generation Bio (GBIO) in Q3 2025, closing a stake of 3,267 shares — an estimated $10.5K sold.

Two Sigma Securities first reported a position in GBIO in Q2 2025 and held it in 1 quarter. The position peaked at $10.5K in Q2 2025. 41 funds tracked by Wall St. Rank hold GBIO as of Q3 2025.

  • Two Sigma Securities reported no remaining Generation Bio position as of Q3 2025 after selling out during the quarter.
  • Two Sigma Securities sold 3,267 Generation Bio shares in Q3 2025, an estimated $10.5K.
  • Two Sigma Securities first reported a position in Generation Bio in Q2 2025 and held it in 1 quarter.
  • Two Sigma Securities's Generation Bio position peaked at $10.5K in Q2 2025.
  • 41 funds tracked by Wall St. Rank held Generation Bio as of Q3 2025.

Based on Two Sigma Securities's 13F filing for Q3 2025, filed 14 Nov 2025.