Generation Bio Co. - Common Stock (GBIO)

Historical Holders from Q2 2025 to Q3 2025

Symbol
GBIO on Nasdaq
CUSIP
37148K209
Type / Class
Equity / Common Stock
Shares outstanding
6.7M
All holders as of September 30, 2025
Q3 2025
Total 13F shares, excl. options
3.11M
Holdings value
$19M
% of all portfolios
0%
Grand Portfolio weight change
+0%
Number of holders
35
Number of buys
33
Number of sells
-2
Average Value change %
+0%
Average buys %
+0%
Average sells %
0%
Reported Shares, Excluding Options vs Price
Reported Value, Excluding Options
Total Investors

Significant Owners of Generation Bio Co. - Common Stock (GBIO)

Filer Ownership Change % Holdings Value Net Change Nb Shares Change % Reporting Name Report Period
PRICE T ROWE ASSOCIATES INC /MD/ 8.6% -30.8% $3.45M -$47.2M 577K -93.2% T. Rowe Price Associates, Inc. Sep 30, 2025
SymBiosis Capital Partners, LLC 6.3% $2.52M 422K SymBiosis Capital Partners, LLC Sep 30, 2025
RENAISSANCE TECHNOLOGIES LLC 5.11% $2.06M 344K Renaissance Technologies LLC Jul 1, 2025

Institutional Holders of Generation Bio Co. - Common Stock (GBIO)

Period Reported Shares, Excl. Options Value, Excl. Options Change Price Investors
2025 Q3 3.11M $19M +$18.3M $6.12 35
2025 Q2 117K $37.5K +$37.5K $0.32 3