Q32 Bio QTTB Institutional Ownership

NASDAQ QTTB

$8.25 -0.02 (-0.24%)

At close: Oct 1, 2026 · 4:00 PM EDT

Institutions by Trading Activity

72 Institutions

Increased 45 62.5%

Unchanged 13 18.1%

Reduced 14 19.4%

Ownership Statistics

13F · as of 30 Jun, 2026

Institutional Ownership

109.03%

▲+42.16 pp QoQ

Shares Held by Institutions

22.18Mn

of 20.34Mn outstanding

▲+154.96% QoQ

Shares Outstanding

20.34Mn

-1.84Mn held outside 13F filers

Institutional Investors

filed 13F for Jun 2026

▲+19 vs prior quarter

Net Shares Added (QoQ)

+13.48Mn

accumulated since last quarter

Value of Holdings

$183.42Mn

reported market value

Shares Owned by Institutions

Shares held % of outstanding

Latest —

Average ownership —

Peak ownership —

Shares Purchased/Sold by Institutions

Accumulated Distributed

Latest quarter —

Net over range —

Accumulating quarters —

Ownership Summary

Quarter ending 30 Jun, 2026

Q32 Bio Inc. (NASDAQ:QTTB) is held by 72 institutional investors per 13F filings through June 2026.

They owned 109.0% of outstanding stock in June 2026, up from 66.9% the prior quarter.
They increased total shares held in Q32 Bio by 154.96% from the prior quarter, while the number of investors in QTTB increased 20.0% year over year.
Of these 72 funds, 45 grew their exposure to Q32 Bio, 14 cut back, and 13 maintained positions.
In total, institutional investors held 22.18Mn shares in Q32 Bio as of June 2026, up by 13.48Mn shares quarter on quarter, and up 13.22Mn shares year over year.
ORBIMED ADVISORS LLC leads ownership in QTTB with 4.13Mn shares as of June 30, 2026, equal to 20.29% of outstanding shares.
Top purchasers of QTTB stock for the quarter ending June 2026 included Boxer Capital Management, LLC (3.15Mn), BVF INC/IL (2.35Mn), RA CAPITAL MANAGEMENT, L.P. (2.33Mn), ORBIMED ADVISORS LLC (1.88Mn), Point72 Asset Management, L.P. (1.17Mn).
The biggest sellers of Q32 Bio for the quarter ending June 2026 included Carlyle Group Inc. (1.04Mn), Opaleye Management Inc. (325.23K), ACORN CAPITAL ADVISORS, LLC (98.88K), RENAISSANCE TECHNOLOGIES LLC (27.32K), Cambridge Investment Research Advisors, Inc. (16.94K).
Business Quant data shows the 10 biggest positions in Q32 Bio as of June 2026 are held by ORBIMED ADVISORS LLC (4.13Mn), Boxer Capital Management, LLC (3.15Mn), Atlas Venture Life Science Advisors, LLC (2.72Mn), BVF INC/IL (2.35Mn), RA CAPITAL MANAGEMENT, L.P. (2.33Mn), Point72 Asset Management, L.P. (1.17Mn), Opaleye Management Inc. (931.0K), Logos Global Management LP (800.0K), SummitTX Capital, L.P. (733.77K), VANGUARD CAPITAL MANAGEMENT LLC (518.8K).

Form 13F Holdings

72 Institutional Holders

Report period 30 Jun, 2026

Total shares held 22.18Mn

Of outstanding 109.03%

#	Institution	CIK	Shares Held	% of Outstanding	Change (QoQ)	Change (%)	Value (USD)
1	ORBIMED ADVISORS LLC	0001055951	4,127,987	20.29%	▲1,875,000	+83.22%	$52.59Mn
2	Boxer Capital Management, LLC	0002018299	3,149,310	15.48%	▲3,149,310	0.00%	$40.12Mn
3	Atlas Venture Life Science Advisors, LLC	0001917529	2,717,106	13.36%	▲625,000	+29.87%	$34.62Mn
4	BVF INC/IL	0001056807	2,350,000	11.55%	▲2,350,000	0.00%	$29.94Mn
5	RA CAPITAL MANAGEMENT, L.P.	0001346824	2,332,457	11.47%	▲2,332,457	0.00%	$29.72Mn
6	Point72 Asset Management, L.P.	0001603466	1,173,396	5.77%	▲1,173,396	0.00%	$14.95Mn
7	Opaleye Management Inc.	0001595855	931,000	4.58%	▼325,228	-25.89%	$11.86Mn
8	Logos Global Management LP	0001792126	800,000	3.93%	▲800,000	0.00%	$10.19Mn
9	SummitTX Capital, L.P.	0002052310	733,774	3.61%	▲733,774	0.00%	$9.35Mn
10	VANGUARD CAPITAL MANAGEMENT LLC	0002100119	518,803	2.55%	▲212,402	+69.32%	$6.61Mn
11	Ikarian Capital, LLC	0001778253	430,000	2.11%	▲430,000	0.00%	$5.48Mn
12	Woodline Partners LP	0001784547	286,212	1.41%	▲286,212	0.00%	$3.65Mn
13	AMERICAN CENTURY COMPANIES INC	0000748054	272,752	1.34%	▲253,982	+1,353.13%	$3.47Mn
14	Sanofi	0001121404	244,083	1.20%	0	0.00%	$3.11Mn
15	ACADIAN ASSET MANAGEMENT LLC	0000916542	218,234	1.07%	▲45,648	+26.45%	$2.78K
16	ACORN CAPITAL ADVISORS, LLC	0002054410	216,171	1.06%	▼98,881	-31.39%	$2.75Mn
17	RENAISSANCE TECHNOLOGIES LLC	0001037389	179,600	0.88%	▼27,315	-13.20%	$2.29Mn
18	JANE STREET GROUP, LLC	0001595888	162,747	0.80%	▲97,148	+148.09%	$2.07Mn
19	MONIMUS CAPITAL MANAGEMENT, LP	0001848831	132,036	0.65%	▼2,274	-1.69%	$1.68Mn
20	BOOTHBAY FUND MANAGEMENT, LLC	0001549230	130,427	0.64%	▲130,427	0.00%	$1.66Mn

Showing 1 to 20 of 72 holders