Q32 BIO INC (QTTB) Institutional Shareholders
Q32 BIO INC (QTTB) 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 $279.35M in QTTB holdings during the latest filing period.
Orbimed Advisors Llc is currently the largest disclosed institutional shareholder of QTTB tracked by InsiderSet, reporting ownership valued at approximately $52.59M 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 $62.54M, representing an estimated gain of +18.92% since the filing period.
The top 10 institutional shareholders tracked on this page collectively account for approximately 86% of the total disclosed QTTB value among the investors covered in this analysis. Major shareholders include Orbimed Advisors Llc, Boxer Capital Management, Llc, Atlas Venture Life Science Advisors, Llc, and several other long-term asset managers with concentrated positions in Q32 BIO INC (QTTB).
This page ranks the largest institutional QTTB 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
71
Total Reported Value
$279.35M
Largest Holder
Orbimed Advisors Llc
Largest Position
$52.59M
Insider Transactions (90d)
8
Latest Filing Quarter
Q2 2026
New Institutional Positions
87
Funds Exiting Positions
0
| Name | Investor/Manager | Portfolio % | Quantity | Reported Balance | Current Estimated Value | Gain/loss Since Filing | Estimated Portfolio Performance |
|---|---|---|---|---|---|---|---|
| Orbimed Advisors Llc | 1.00% | 4,127,987 | $52,590,554 | $62,539,003 | +$9,948,449 | +18.92% | |
| Boxer Capital Management, Llc | 3.02% | 3,149,310 | $40,122,209 | $47,712,047 | +$7,589,838 | +18.92% | |
| Atlas Venture Life Science Advisors, Llc | 3.93% | 2,717,106 | $34,615,930 | $41,164,156 | +$6,548,226 | +18.92% | |
| Bvf Inc/Il | 0.77% | 2,350,000 | $29,939,000 | $35,602,500 | +$5,663,500 | +18.92% | |
| Ra Capital Management, L.P. | 0.26% | 2,332,457 | $29,715,502 | $35,336,724 | +$5,621,222 | +18.92% | |
| Point72 Asset Management, L.P. | 0.02% | 1,173,396 | $14,949,065 | $17,776,949 | +$2,827,884 | +18.92% | |
| Opaleye Management Inc. | 1.07% | 931,000 | $11,860,940 | $14,104,650 | +$2,243,710 | +18.92% | |
| Logos Global Management Lp | 0.44% | 800,000 | $10,192,000 | $12,120,000 | +$1,928,000 | +18.92% | |
| Summittx Capital, L.P. | 0.25% | 733,774 | $9,348,281 | $11,116,676 | +$1,768,395 | +18.92% | |
| Vanguard Capital Management Llc | 0.00% | 518,803 | $6,609,550 | $7,859,865 | +$1,250,315 | +18.92% | |
| Ikarian Capital, Llc | 0.90% | 430,000 | $5,478,200 | $6,514,500 | +$1,036,300 | +18.92% | |
| Woodline Partners Lp | 0.01% | 286,212 | $3,646,341 | $4,336,112 | +$689,771 | +18.92% | |
| American Century Companies Inc | 0.00% | 272,752 | $3,474,860 | $4,132,193 | +$657,333 | +18.92% | |
| Sanofi | 0.58% | 244,083 | $3,109,617 | $3,697,857 | +$588,240 | +18.92% | |
| Acorn Capital Advisors, Llc | 0.75% | 216,171 | $2,754,019 | $3,274,991 | +$520,972 | +18.92% | |
| Renaissance Technologies LLC | Jim Simons | 0.00% | 179,600 | $2,288,104 | $2,720,940 | +$432,836 | +18.92% |
| Jane Street Group, Llc | 0.00% | 162,747 | $2,073,396 | $2,465,617 | +$392,221 | +18.92% | |
| Monimus Capital Management, Lp | 0.43% | 132,036 | $1,682,139 | $2,000,345 | +$318,206 | +18.92% | |
| Boothbay Fund Management, Llc | 0.03% | 130,427 | $1,661,640 | $1,975,969 | +$314,329 | +18.92% | |
| Geode Capital Management, Llc | 0.00% | 122,690 | $1,563,506 | $1,858,754 | +$295,248 | +18.88% | |
| Citadel Advisors Llc | 0.00% | 120,663 | $1,537,247 | $1,828,044 | +$290,797 | +18.92% | |
| Blackrock, Inc. | 0.00% | 118,507 | $1,509,780 | $1,795,381 | +$285,601 | +18.92% | |
| Marshall Wace, Llp | 0.00% | 67,045 | $854,153 | $1,015,732 | +$161,579 | +18.92% | |
| Vanguard Fiduciary Trust Co | 0.00% | 66,217 | $843,605 | $1,003,188 | +$159,583 | +18.92% | |
| Carlyle Group Inc. | 0.01% | 60,363 | $769,020 | $914,499 | +$145,479 | +18.92% | |
| State Street Corp | 0.00% | 52,214 | $665,206 | $791,042 | +$125,836 | +18.92% | |
| Two Sigma Investments, Lp | 0.00% | 49,582 | $631,675 | $751,167 | +$119,492 | +18.92% | |
| Quadrature Capital Ltd | 0.00% | 36,396 | $463,685 | $551,399 | +$87,714 | +18.92% | |
| Bridgeway Capital Management, Llc | 0.01% | 34,613 | $440,970 | $524,387 | +$83,417 | +18.92% | |
| Dafna Capital Management Llc | 0.08% | 32,896 | $419,095 | $498,374 | +$79,279 | +18.92% | |
| Knott David M Jr | 0.20% | 30,412 | $387,449 | $460,742 | +$73,293 | +18.92% | |
| Affinity Asset Advisors, Llc | 0.02% | 27,777 | $353,879 | $420,822 | +$66,943 | +18.92% | |
| Squarepoint Ops Llc | 0.00% | 23,790 | $303,085 | $360,419 | +$57,334 | +18.92% | |
| Northern Trust Corp | 0.00% | 23,631 | $301,059 | $358,010 | +$56,951 | +18.92% | |
| Dimensional Fund Advisors Lp | 0.00% | 23,588 | $300,511 | $357,358 | +$56,847 | +18.92% | |
| Susquehanna International Group, Llp | 0.00% | 23,342 | $297,377 | $353,631 | +$56,254 | +18.92% | |
| Mangrove Partners Im, Llc | 0.02% | 22,150 | $282,191 | $335,573 | +$53,382 | +18.92% | |
| Lpl Financial Llc | 0.00% | 18,170 | $231,486 | $275,276 | +$43,790 | +18.92% | |
| Ubs Group Ag | 0.00% | 15,008 | $191,202 | $227,371 | +$36,169 | +18.92% | |
| Balyasny Asset Management L.P. | 0.00% | 12,342 | $157,237 | $186,981 | +$29,744 | +18.92% | |
| Exoduspoint Capital Management, Lp | 0.00% | 11,336 | $144,421 | $171,740 | +$27,319 | +18.92% | |
| Millennium Management Llc | 0.00% | 10,928 | $139,223 | $165,559 | +$26,336 | +18.92% | |
| Xtx Topco Ltd | 0.00% | 10,874 | $138,535 | $164,741 | +$26,206 | +18.92% | |
| Morgan Stanley | 0.00% | 6,456 | $82,259 | $97,808 | +$15,549 | +18.90% | |
| Vanguard Global Advisers, Llc | 0.00% | 4,824 | $61,458 | $73,084 | +$11,626 | +18.92% | |
| Fmr Llc | 0.00% | 3,388 | $43,163 | $51,328 | +$8,165 | +18.92% | |
| Citigroup Inc | 0.00% | 2,888 | $36,793 | $43,753 | +$6,960 | +18.92% | |
| Private Wealth Asset Management, Llc | 0.00% | 1,700 | $21,658 | $25,755 | +$4,097 | +18.92% | |
| Arax Advisory Partners | 0.00% | 1,111 | $14,154 | $16,832 | +$2,678 | +18.92% | |
| Federated Hermes, Inc. | 0.00% | 1,050 | $13,377 | $15,908 | +$2,531 | +18.92% |
Frequently asked questions about QTTB
Who owns the most QTTB stock?
The largest holders of QTTB 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 Q32 BIO INC (QTTB).
Is QTTB widely held by superinvestors?
Many widely followed stocks like QTTB appear across numerous superinvestor portfolios because of liquidity, index inclusion, and fundamentals. The holder count and table above show how broadly QTTB 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.