Dimensional Fund Advisors
GBIO

Dimensional Fund Advisors’s Generation Bio GBIO Stock Holding History

Dimensional Fund Advisors’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
Q2 		– Sell
-19,183
Closed -$77.8K – 3292
2025
Q1 		$77.8K Sell
19,183
-20,441
-52% -$144K ﹤0.01% 3232
2024
Q4 		$420K Sell
39,624
-4,488
-10% -$80K ﹤0.01% 3065
2024
Q3 		$1.09M Sell
44,112
-4,428
-9% -$117K ﹤0.01% 2897
2024
Q2 		$1.37M Sell
48,540
-1,885
-4% -$61.3K ﹤0.01% 2855
2024
Q1 		$2.05M Sell
50,425
-17,885
-26% -$421K ﹤0.01% 2791
2023
Q4 		$1.13M Sell
68,310
-7,832
-10% -$137K ﹤0.01% 2908
2023
Q3 		$2.89M Buy
76,142
+11,692
+18% +$554K ﹤0.01% 2676
2023
Q2 		$3.54M Buy
64,450
+9,966
+18% +$457K ﹤0.01% 2630
2023
Q1 		$2.34M Buy
54,484
+9,238
+20% +$447K ﹤0.01% 2708
2022
Q4 		$1.78K Buy
45,246
+11,949
+36% +$627K ﹤0.01% 2753
2022
Q3 		$1.77M Buy
33,297
+20,483
+160% +$1.28M ﹤0.01% 2746
2022
Q2 		$842K Buy
12,814
+340
+3% +$22.2K ﹤0.01% 2951
2022
Q1 		$915K Sell
12,474
-739
-6% -$42.8K ﹤0.01% 3012
2021
Q4 		$935K Buy
13,213
+7,328
+125% +$1.28M ﹤0.01% 3042
2021
Q3 		$1.48M Buy
+5,885
New +$1.41M ﹤0.01% 2937

Other funds holding GBIO

T. Rowe Price Associates
T. Rowe Price Associates Baltimore, Maryland $865B AUM 30.76% 1-Year Est. Return
AVLSA
Atlas Venture Life Science Advisors Cambridge, Massachusetts $790M AUM 223.66% 1-Year Est. Return
SL
Siren LLC Greenwich, Connecticut $3.61B AUM 203.3% 1-Year Est. Return
Renaissance Technologies
Renaissance Technologies New York $63.9B AUM 45.56% 1-Year Est. Return
Fidelity Investments
Fidelity Investments Boston, Massachusetts $1.9T AUM 41.92% 1-Year Est. Return
Vanguard Group
Vanguard Group Malvern, Pennsylvania $6.9T AUM 27.45% 1-Year Est. Return
BBA
Baker Bros. Advisors New York $17.4B AUM 131.5% 1-Year Est. Return
Acadian Asset Management
Acadian Asset Management Boston, Massachusetts $70.5B AUM 36% 1-Year Est. Return
BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
Goldman Sachs
Goldman Sachs New York $871B AUM 31.28% 1-Year Est. Return

Dimensional Fund Advisors's GBIO Position: Q2 2025 in Review

Dimensional Fund Advisors sold out of Generation Bio (GBIO) in Q2 2025, closing a stake of 19,183 shares — an estimated $77.8K sold.

Dimensional Fund Advisors first reported a position in GBIO in Q3 2021 and held it in 15 quarters. The position peaked at $3.54M in Q2 2023. 61 funds tracked by Wall St. Rank hold GBIO as of Q2 2025.

  • Dimensional Fund Advisors reported no remaining Generation Bio position as of Q2 2025 after selling out during the quarter.
  • Dimensional Fund Advisors sold 19,183 Generation Bio shares in Q2 2025, an estimated $77.8K.
  • Dimensional Fund Advisors first reported a position in Generation Bio in Q3 2021 and held it in 15 quarters.
  • Dimensional Fund Advisors's Generation Bio position peaked at $3.54M in Q2 2023.
  • 61 funds tracked by Wall St. Rank held Generation Bio as of Q2 2025.

Based on Dimensional Fund Advisors's 13F filing for Q2 2025, filed 12 Aug 2025.