Generate Biomedicines, Inc. (GENB) Institutional Shareholders
Generate Biomedicines, Inc. (GENB) is currently reported in institutional portfolios tracked by InsiderSet based on the latest available SEC Form 13F filings for the quarter ended June 30, 2026. The institutional investors covered on this page collectively reported approximately $1.69B in GENB holdings during the latest filing period.
Flagship Pioneering, Llc is currently the largest disclosed institutional shareholder of GENB tracked by InsiderSet, reporting ownership valued at approximately $1.06B in its June 30, 2026 SEC Form 13F filing. Based on current market prices and the latest disclosed share count, the position is now estimated to be worth approximately $1.07B, representing an estimated gain of +1.60% since the filing period.
The top 10 institutional shareholders tracked on this page collectively account for approximately 86% of the total disclosed GENB value among the investors covered in this analysis. Major shareholders include Flagship Pioneering, Llc, Fmr Llc, Capital World Investors, and several other long-term asset managers with concentrated positions in Generate Biomedicines, Inc. (GENB).
This page ranks the largest institutional GENB shareholders using publicly disclosed SEC Form 13F data, including reported values, estimated current holding values, portfolio allocation percentages, ownership concentration metrics, and historical holding changes across major hedge funds and investment firms.
Institutional Holders
86
Total Reported Value
$1.69B
Largest Holder
Flagship Pioneering, Llc
Largest Position
$1.06B
Insider Transactions (90d)
0
Latest Filing Quarter
Q2 2026
New Institutional Positions
98
Funds Exiting Positions
0
| Name | Investor/Manager | Portfolio % | Quantity | Reported Balance | Current Estimated Value | Gain/loss Since Filing | Estimated Portfolio Performance |
|---|---|---|---|---|---|---|---|
| Flagship Pioneering, Llc | 68.66% | 62,673,117 | $1,057,295,483 | $1,074,217,225 | +$16,921,742 | +1.60% | |
| Fmr Llc | 0.00% | 5,221,599 | $88,088,375 | $89,498,207 | +$1,409,832 | +1.60% | |
| Capital World Investors | 0.01% | 4,215,632 | $71,117,712 | $72,255,932 | +$1,138,220 | +1.60% | |
| Braidwell Lp | 2.05% | 3,283,844 | $55,398,448 | $56,285,086 | +$886,638 | +1.60% | |
| Price T Rowe Associates Inc | 0.00% | 2,156,627 | $36,383,000 | $36,964,587 | +$581,587 | +1.60% | |
| Norges Bank | 0.00% | 2,094,616 | $35,336,172 | $35,901,718 | +$565,546 | +1.60% | |
| Arch Venture Management, Llc | 2.98% | 1,944,426 | $32,802,467 | $33,327,462 | +$524,995 | +1.60% | |
| Harbourvest Partners Llc | 17.09% | 1,722,210 | $29,053,683 | $29,518,679 | +$464,996 | +1.60% | |
| Blackrock, Inc. | 0.00% | 1,659,966 | $28,003,627 | $28,451,817 | +$448,190 | +1.60% | |
| Baker Bros. Advisors Lp | 0.12% | 1,423,602 | $24,016,166 | $24,400,538 | +$384,372 | +1.60% | |
| Jpmorgan Chase & Co | 0.00% | 1,409,649 | $23,837,165 | $24,161,384 | +$324,219 | +1.36% | |
| Deep Track Capital, Lp | 0.33% | 1,333,815 | $22,501,459 | $22,861,589 | +$360,130 | +1.60% | |
| ARK Invest | Cathie Wood | 0.14% | 1,284,617 | $21,671,492 | $22,018,335 | +$346,843 | +1.60% |
| Vanguard Capital Management Llc | 0.00% | 1,132,750 | $19,109,493 | $19,415,335 | +$305,842 | +1.60% | |
| Harvard Management Co Inc | 0.44% | 1,111,100 | $18,744,257 | $19,044,254 | +$299,997 | +1.60% | |
| Nvidia Corp | 0.02% | 833,325 | $14,058,193 | $14,283,191 | +$224,998 | +1.60% | |
| Davern Capital Partners, Lp | 2.37% | 824,679 | $13,912,335 | $14,134,998 | +$222,663 | +1.60% | |
| Siren, L.L.C. | 0.25% | 736,104 | $12,418,075 | $12,616,823 | +$198,748 | +1.60% | |
| Geode Capital Management, Llc | 0.00% | 735,003 | $12,402,534 | $12,597,951 | +$195,417 | +1.58% | |
| State Street Corp | 0.00% | 526,565 | $8,883,152 | $9,025,324 | +$142,172 | +1.60% | |
| Affinity Asset Advisors, Llc | 0.33% | 400,000 | $6,748,000 | $6,856,000 | +$108,000 | +1.60% | |
| Morgan Stanley | 0.00% | 377,994 | $6,376,773 | $6,478,817 | +$102,044 | +1.60% | |
| Ubs Group Ag | 0.00% | 326,273 | $5,504,225 | $5,592,319 | +$88,094 | +1.60% | |
| Sphera Funds Management Ltd. | 0.59% | 245,000 | $4,133,150 | $4,199,300 | +$66,150 | +1.60% | |
| Charles Schwab Investment Management Inc | 0.00% | 224,602 | $3,789,036 | $3,849,678 | +$60,642 | +1.60% | |
| Northern Trust Corp | 0.00% | 197,543 | $3,332,551 | $3,385,887 | +$53,336 | +1.60% | |
| Vanguard Fiduciary Trust Co | 0.00% | 175,356 | $2,958,256 | $3,005,602 | +$47,346 | +1.60% | |
| Vanguard Portfolio Management Llc | 0.00% | 167,285 | $2,822,098 | $2,867,265 | +$45,167 | +1.60% | |
| Centerbook Partners Lp | 0.11% | 131,560 | $2,219,417 | $2,254,938 | +$35,521 | +1.60% | |
| Alps Advisors Inc | 0.01% | 129,406 | $2,183,079 | $2,218,019 | +$34,940 | +1.60% | |
| Seven Grand Managers, Llc | 0.08% | 125,000 | $2,108,750 | $2,142,500 | +$33,750 | +1.60% | |
| Barclays Plc | 0.00% | 116,902 | $1,972,137 | $2,003,700 | +$31,563 | +1.60% | |
| Lmr Partners Llp | 0.01% | 100,000 | $1,687,000 | $1,714,000 | +$27,000 | +1.60% | |
| Ameriprise Financial Inc | 0.00% | 91,100 | $1,536,857 | $1,561,454 | +$24,597 | +1.60% | |
| Manufacturers Life Insurance Company, The | 0.00% | 84,803 | $1,430,627 | $1,453,523 | +$22,896 | +1.60% | |
| Bank Of New York Mellon Corp | 0.00% | 57,326 | $967,090 | $982,568 | +$15,478 | +1.60% | |
| Bank Of America Corp | 0.00% | 55,430 | $935,104 | $950,070 | +$14,966 | +1.60% | |
| Td Asset Management Inc | 0.00% | 50,748 | $856,119 | $869,821 | +$13,702 | +1.60% | |
| Nuveen, Llc | 0.00% | 44,470 | $750,209 | $762,216 | +$12,007 | +1.60% | |
| Renaissance Technologies LLC | Jim Simons | 0.00% | 39,685 | $669,486 | $680,201 | +$10,715 | +1.60% |
| Sumitomo Mitsui Trust Group, Inc. | 0.00% | 38,665 | $652,279 | $662,718 | +$10,439 | +1.60% | |
| Amova Asset Management Americas, Inc. | 0.01% | 38,218 | $644,355 | $655,057 | +$10,702 | +1.66% | |
| Iq Eq Fund Management (Ireland) Ltd | 0.04% | 37,226 | $628,003 | $638,054 | +$10,051 | +1.60% | |
| Quadrature Capital Ltd | 0.00% | 31,510 | $531,574 | $540,081 | +$8,507 | +1.60% | |
| Squarepoint Ops Llc | 0.00% | 31,406 | $529,819 | $538,299 | +$8,480 | +1.60% | |
| Rhumbline Advisers | 0.00% | 30,648 | $517,025 | $525,307 | +$8,282 | +1.60% | |
| Citigroup Inc | 0.00% | 30,587 | $516,003 | $524,261 | +$8,258 | +1.60% | |
| Virtus Investment Advisers, Llc | 0.10% | 26,430 | $445,874 | $453,010 | +$7,136 | +1.60% | |
| Xtx Topco Ltd | 0.01% | 24,956 | $421,008 | $427,746 | +$6,738 | +1.60% | |
| Deutsche Bank Ag\ | 0.00% | 24,135 | $407,157 | $413,674 | +$6,517 | +1.60% |
Frequently asked questions about GENB
Who owns the most GENB stock?
The largest holders of GENB are typically major institutional investors such as asset managers and hedge funds reporting on Form 13F. The table above ranks tracked superinvestors by reported position size using the latest available filings for Generate Biomedicines, Inc. (GENB).
Is GENB widely held by superinvestors?
Many widely followed stocks like GENB appear across numerous superinvestor portfolios because of liquidity, index inclusion, and fundamentals. The holder count and table above show how broadly GENB is represented among the institutional managers we track.
What do “Current Estimated Value”, “Gain/loss Since Filing”, and “Estimated Portfolio Performance” mean?
Current Estimated Value is reported share quantity from the latest 13F times our most recent split-adjusted U.S. session close. Gain/loss Since Filing is that estimate minus the reported 13F dollar value; Estimated Portfolio Performance is that difference as a percent of the reported value. Green means the estimate is above the filing value; red means below (not purchase cost). If many filers share the same implied filing price per share, the performance % may match across rows. These are not official fund marks or live quotes.