Company · Ownership research

Q32 Bio Inc. QTTB

CIK 0001661998 · CUSIP 746964105

Insider trading Initial holdings Institutional 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 74 rows by value; the complete set is available through the API.

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	ORBIMED ADVISORS LLC CIK 1055951 · View history	$100.53M 2,252,987 shares	1.85%	0(0.00%)Unchanged	SEC filing ↗ Nov 14, 2024	▾
02	Atlas Venture Life Science Advisors, LLC CIK 1917529 · View history	$93.35M 2,092,106 shares	8.65%	0(0.00%)Unchanged	SEC filing ↗ Nov 13, 2024	▾
03	Carlyle Group Inc. CIK 1527166 · View history	$48.62M 1,102,741 shares	5.10%	0(0.00%)Unchanged	SEC filing ↗ Nov 8, 2024	▾
04	FMR LLC CIK 315066 · Amended · View history	$19.02M 426,302 shares	0.00%	+246.66K(+137.30%)Added	SEC filing ↗ Nov 13, 2024	▾
05	BlackRock, Inc. CIK 2012383 · View history	$18.23M 408,659 shares	0.00%	—	SEC filing ↗ Nov 13, 2024	▾
06	ADAGE CAPITAL PARTNERS GP, L.L.C. CIK 1165408 · View history	$18.04M 404,411 shares	0.03%	+404.41KNew	SEC filing ↗ Nov 14, 2024	▾
07	ARCH Venture Management, LLC CIK 1274403 · View history	$14.30M 320,482 shares	5.49%	0(0.00%)Unchanged	SEC filing ↗ Nov 14, 2024	▾
08	Temasek Holdings (Private) Ltd CIK 1021944 · View history	$14.01M 313,943 shares	0.06%	0(0.00%)Unchanged	SEC filing ↗ Nov 14, 2024	▾
09	VANGUARD GROUP INC CIK 102909 · View history	$12.74M 285,416 shares	0.00%	+147.05K(+106.30%)Added	SEC filing ↗ Nov 13, 2024	▾
10	EVENTIDE ASSET MANAGEMENT, LLC CIK 1442891 · View history	$8.48M 190,000 shares	0.15%	+190.00KNew	SEC filing ↗ Nov 14, 2024	▾
11	HARVARD MANAGEMENT CO INC CIK 1082621 · View history	$7.27M 162,965 shares	0.42%	0(0.00%)Unchanged	SEC filing ↗ Nov 14, 2024	▾
12	GEODE CAPITAL MANAGEMENT, LLC CIK 1214717 · View history	$5.88M 131,768 shares	0.00%	+24.11K(+22.40%)Added	SEC filing ↗ Nov 12, 2024	▾
13	STATE STREET CORP CIK 93751 · View history	$4.92M 110,164 shares	0.00%	+28.86K(+35.50%)Added	SEC filing ↗ Nov 14, 2024	▾
14	Woodline Partners LP CIK 1784547 · View history	$4.77M 106,901 shares	0.04%	+106.90KNew	SEC filing ↗ Nov 14, 2024	▾
15	MILLENNIUM MANAGEMENT LLC CIK 1273087 · View history	$4.48M 100,343 shares	0.00%	+100.34KNew	SEC filing ↗ Nov 14, 2024	▾
16	Point72 Asset Management, L.P. CIK 1603466 · View history	$3.42M 76,685 shares	0.01%	+76.69KNew	SEC filing ↗ Nov 14, 2024	▾
17	PLATINUM INVESTMENT MANAGEMENT LTD CIK 1256071 · View history	$2.98M 66,801 shares	0.13%	-22.66K(-25.30%)Reduced	SEC filing ↗ Nov 8, 2024	▾
18	Ensign Peak Advisors, Inc CIK 1454984 · View history	$2.88M 64,481 shares	0.01%	0(0.00%)Unchanged	SEC filing ↗ Nov 14, 2024	▾
19	ADAR1 Capital Management, LLC CIK 1940272 · View history	$2.87M 64,245 shares	0.48%	-92.26K(-58.90%)Reduced	SEC filing ↗ Nov 14, 2024	▾
20	NORTHERN TRUST CORP CIK 73124 · View history	$2.73M 61,255 shares	0.00%	+61.26KNew	SEC filing ↗ Nov 13, 2024	▾

Showing 20 / 74 institutions. The complete set is available through the API.

Coverage & totals by quarter

Reporting institutions

Cancelled or null records excluded

Disclosed shares

9,108,419

Not deduplicated across managers

Disclosed value

$405.85M

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 2024

Explore all 74 reporting institutions.

This page includes 20 of 74 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.

Download CSV
Earlier quarters
Advanced screening & filtering
API & AI access

Already have an account?

＋ New accounts get free API credits to explore data beyond ownership filings.

For AI agents & developers

The initial HTML of this page carries its exact data as script#research-data (JSON): values, units, scope, preview limits and SEC sources. Read it directly, no script or API key needed; script#research-access says what needs an account. This page lists 20 of 74 reporting institutions; totals use the complete disclosed data.

Without an account: the last 3 years, with the row caps stated on the page. A free account opens all history on file on these pages and the CSV of what a page shows. Rows beyond the caps and bulk retrieval go through the authenticated API / MCP / CLI.

MCP  https://api.akkrudata.ai/mcp

akkru_institutional_holdings
{"action":"holders","cusip":"746964105","quarter":"2024Q3","type":"positions","page_size":100}

Connect to MCP with OAuth and follow the returned pagination. Credits and usage limits depend on the account.

MCP endpoint: https://api.akkrudata.ai/mcp
API / MCP / CLI documentation: /documents
llms.txt: /llms.txt

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.