Company · Ownership research

Q32 Bio Inc. QTTB

CIK 0001661998 · CUSIP 746964105

Insider tradingInitial holdingsInstitutional holders

Quarter-end disclosures, not live holdings.

Several CUSIPs are reported for this company; this page shows CUSIP 746964105 (QTTB), not CUSIP 746964955 (QTTB), CUSIP 746964905 (QTTB), and does not merge CUSIPs.

This page lists the top 20 of 42 rows by value; the complete set is available through the API.

Some filings reported values in thousands; those figures were scaled ×1,000 to dollars.

Top 20 institutions

Weight means this stock's share of the manager's own portfolio.

By reported value

#	Manager	Value	Manager weight	Change vs prior	Source
01	Atlas Venture Life Science Advisors, LLC CIK 1917529 · View history	$22.47M 2,717,106 shares	3.56%	0(0.00%)Unchanged	SEC filing ↗ Nov 10, 2026	▾
02	JPMORGAN CHASE & CO CIK 19617 · View history	$10.12M 1,062,137 shares	0.00%	+1.06MNew	SEC filing ↗ Nov 12, 2026	▾
03	AMERICAN CENTURY COMPANIES INC CIK 748054 · View history	$5.40M 652,597 shares	0.00%	+379.85K(+139.30%)Added	SEC filing ↗ Nov 12, 2026	▾
04	Aberdeen Group plc CIK 1716774 · Amended · View history	$2.50M 302,500 shares	0.00%	+302.50KNew	SEC filing ↗ Nov 10, 2026	▾
05	Sanofi CIK 1121404 · View history	$2.02M 244,083 shares	0.32%	0(0.00%)Unchanged	SEC filing ↗ Nov 5, 2026	▾
06	GEODE CAPITAL MANAGEMENT, LLC CIK 1214717 · View history	$1.99M 240,954 shares	0.00%	+118.26K(+96.40%)Added	SEC filing ↗ Nov 6, 2026	▾
07	Squarepoint Ops LLC CIK 1642575 · View history	$1.59M 192,095 shares	0.00%	+168.31K(+707.50%)Added	SEC filing ↗ Nov 9, 2026	▾
08	UBS Group AG CIK 1610520 · View history	$1.36M 164,470 shares	0.00%	+149.46K(+995.90%)Added	SEC filing ↗ Nov 10, 2026	▾
09	JANE STREET GROUP, LLC CIK 1595888 · View history	$1.33M 160,819 shares	0.00%	-1.93K(-1.20%)Reduced	SEC filing ↗ Nov 12, 2026	▾
10	ACADIAN ASSET MANAGEMENT LLC CIK 916542 · View history	$998.00K 120,897 shares	0.00%	-97.34K(-44.60%)Reduced	SEC filing ↗ Nov 9, 2026	▾
11	DIMENSIONAL FUND ADVISORS LP CIK 354204 · View history	$912.44K 110,331 shares	0.00%	+86.74K(+367.70%)Added	SEC filing ↗ Nov 4, 2026	▾
12	FIRST TRUST ADVISORS LP CIK 1125816 · View history	$737.14K 89,134 shares	0.00%	+89.13KNew	SEC filing ↗ Nov 12, 2026	▾
13	STATE STREET CORP CIK 93751 · View history	$728.70K 88,114 shares	0.00%	+35.90K(+68.80%)Added	SEC filing ↗ Nov 12, 2026	▾
14	RENAISSANCE TECHNOLOGIES LLC CIK 1037389 · View history	$577.25K 69,800 shares	0.00%	-109.80K(-61.10%)Reduced	SEC filing ↗ Nov 12, 2026	▾
15	Fisher Asset Management, LLC CIK 850529 · View history	$308.15K 37,261 shares	0.00%	+37.26KNew	SEC filing ↗ Nov 6, 2026	▾
16	FOX RUN MANAGEMENT, L.L.C. CIK 1533457 · View history	$183.54K 22,193 shares	0.02%	+22.19KNew	SEC filing ↗ Nov 12, 2026	▾
17	LPL Financial LLC CIK 1403438 · View history	$125.51K 15,176 shares	0.00%	-2.99K(-16.50%)Reduced	SEC filing ↗ Nov 6, 2026	▾
18	Bank of New York Mellon Corp CIK 1390777 · View history	$108.28K 13,093 shares	0.00%	+13.09KNew	SEC filing ↗ Nov 5, 2026	▾
19	DCF Advisers, LLC CIK 1802493 · View history	$107.51K 13,000 shares	0.03%	+13.00KNew	SEC filing ↗ Nov 4, 2026	▾
20	Yorkville Advisors Global, LP CIK 1838613 · View history	$82.70K 10,000 shares	0.10%	+10.00KNew	SEC filing ↗ Nov 12, 2026	▾

Showing 20 / 42 institutions. The complete set is available through the API.

Coverage & totals by quarter

Reporting institutions

Cancelled or null records excluded

Disclosed shares

6,367,288

Not deduplicated across managers

Disclosed value

$53.99M

Not market cap or free float

Reporting institutions by quarter

Counts also change with data coverage and reporting entities; they do not measure net buying. Distinct managers with a live stock row in this CUSIP; totals may include overlapping filings and are not a share of the company.

Q32 Bio Inc. · Q3 2026

Explore all 42 reporting institutions.

This page includes 20 of 42 reporting institutions. Log in to look up the full history beyond 3 years, use advanced screening & filtering, download CSV, and get the complete set through the Akkru API.

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Sources, coverage & how to read this data

Figures are as reported to the SEC and merged with later amendments where Akkru could match them. Preview limits apply to what is listed, not to the totals, which come from the complete reported data. Nothing is zero-filled: a missing quarter or month is shown as missing.