Q32 Bio Ownership | Who Owns Q32 Bio?

Overview Forecast RevenueFinancials Chart

Q32 Bio Ownership Summary

Q32 Bio is owned by 157.35% institutional investors, 2.77% insiders. Orbimed advisors is the largest institutional shareholder, holding 18.32% of QTTB shares. Vanguard MStar Total Stk Mkt Idx Invest is the top mutual fund, with 3.19% of its assets in Q32 Bio shares.

QTTB Ownership Benchmark

Type	Name	% Inst	% Insiders	% Retail
Stock	Q32 Bio	157.35%	2.77%	-60.12%
Sector	Healthcare Stocks	246.48%	12.12%	-158.60%
Industry	Biotech Stocks	384.82%	11.76%	-296.58%

Institutional Shareholders

Top Institutional Shareholders by Total Shares

Holder	Shares	% Holding	Value
Orbimed advisors	2.25M	18.32%	$14.46M
Atlas venture life science advisors	2.09M	17.01%	$13.43M
Opaleye management	1.26M	10.21%	$8.06M
Carlyle group	1.10M	8.96%	$7.08M
Vanguard group	321.05K	2.62%	$1.07M
Acorn capital advisors	315.05K	2.56%	$2.02M
Sanofi	244.08K	1.98%	$1.57M
Renaissance	206.91K	1.68%	$1.33M
Acadian asset management	172.59K	1.40%	$1.11M
Monimus capital management, lp	134.31K	1.09%	$862.27K

Top Institutional Shareholders by % of Total Assets

Holder	Shares	% Assets	Value
Atlas venture life science advisors	2.09M	1.70%	$13.43M
Opaleye management	1.26M	1.06%	$8.06M
Acorn capital advisors	315.05K	0.57%	$2.02M
Sanofi	244.08K	0.47%	$1.57M
Orbimed advisors	2.25M	0.29%	$14.46M
Monimus capital management, lp	134.31K	0.24%	$862.27K
Carlyle group	1.10M	0.07%	$7.08M
Affinity asset advisors	27.78K	0.01%	$178.33K
Two sigma securities	13.75K	0.00%	$27.22K
Renaissance	206.91K	0.00%	$1.33M

Top Buyers

Holder	Shares	% Assets	Change
Opaleye management	1.26M	1.06%	1.04M
Monimus capital management, lp	134.31K	0.24%	134.31K
Acadian asset management	172.59K	0.00%	124.21K
Renaissance	206.91K	0.00%	107.31K
Marshall wace, llp	52.44K	0.00%	52.44K

Top Sellers

Holder	Shares	% Assets	Change
Sio capital management	-	-	-697.41K
Arch venture management	-	-	-320.48K
Temasek (private)	-	-	-313.94K
Mackenzie financial	-	-	-246.30K
Acorn capital advisors	315.05K	0.57%	-178.37K

New Positions

Holder	Shares	% Assets	Change	Value
Monimus capital management, lp	134.31K	0.24%	134.31K	$862.27K
Marshall wace, llp	52.44K	0.00%	52.44K	$336.66K
Vanguard fiduciary trust	49.99K	0.00%	49.99K	$320.97K
Cambridge investment research advisors	35.02K	0.00%	35.02K	$225.00K
American century companies	18.77K	0.00%	18.77K	$120.50K

Sold Out

Holder	Change
National bank of canada /fi/	-1.00
Advisornet financial	-2.00
Thompson investment management	-4.00
Cbiz investment advisory services	-5.00
Farther finance advisors	-6.00

Institutional Ownership Trends

Date	Holdings	Change %	Shares	Change %	Ownership	Change %	Increased Position	Change %	Decreased Position	Change %
Jun 30, 2026	73	37.74%	22,179,036	135.22%	157	3.52%	45	73.08%	13	62.50%
Mar 31, 2026	52	1.96%	9,390,369	16.74%	76	1.77%	25	56.25%	9	-52.63%
Dec 31, 2025	8	-84.62%	579,164	-93.13%	4	0.10%	2	-88.24%	2	-88.89%
Sep 30, 2025	17	-71.19%	1,987,514	-77.86%	16	0.30%	5	-77.27%	7	-63.16%
Jun 30, 2025	58	-15.94%	8,975,903	22.91%	73	2.05%	22	-12.00%	19	-5.00%

Top Mutual Funds Shareholders

Holder	Shares	% Holding	Change
Vanguard MStar Total Stk Mkt Idx Invest	755.25K	3.19%	-
Avantis US Small Cap Value ETF	529.59K	2.24%	-
JPMorgan Small Cap Growth A	493.50K	2.08%	-14.55K
Vanguard Total Stock Mkt Idx Inv	389.12K	1.64%	202.40K
Columbia Small Cap Growth Inst	345.93K	1.46%	345.93K
Vanguard Morn Total Stk Mkt Idx Investor	389.12K	1.31%	202.40K
MEDICAL BioHealth EUR Acc	181.06K	0.76%	38.00
JPMorgan Small Cap Blend A	158.15K	0.67%	-2.91K
Mackenzie Quantitative US Small Cap	112.19K	0.47%	112.19K
abrdn Life Sciences Investors	98.50K	0.42%	98.50K

Recent Insider Transactions

Date	Name	Role	Activity	Value
Oct 06, 2026	Morrison Jodie Pope	CEO	Sell	$26.80K
Oct 06, 2026	Kalowski Lee	CFO and President	Sell	$10.82K
Oct 06, 2026	Violette Shelia M.	Chief Scientific Officer	Sell	$7.63K
Aug 25, 2026	Morrison Jodie Pope	CEO	Sell	$163.03K
Aug 25, 2026	Kalowski Lee	CFO and President	Sell	$65.78K

Insider Transactions Trends

Date	Buy	Sell
2026 Q3	-	3
2026 Q2	4	-
2026 Q1	-	3
2025 Q4	-	2
2025 Q3	-	3

QTTB Ownership FAQ

Who Owns Q32 Bio?

Q32 Bio shareholders are primarily institutional investors at 157.35%, followed by 2.77% insiders and -60.12% retail investors. The average institutional ownership in Q32 Bio's industry, Biotech Stocks , is 384.82%, which Q32 Bio falls below.

Who owns the most shares of Q32 Bio?

Q32 Bio’s largest shareholders are Orbimed advisors (2.25M shares, 18.32%), Atlas venture life science advisors (2.09M shares, 17.01%), and Opaleye management (1.26M shares, 10.21%). Together, they hold 45.54% of Q32 Bio’s total shares outstanding.

Does Blackrock own Q32 Bio?

BlackRock is not among the top 10 institutional shareholders of Q32 Bio.

Who is Q32 Bio’s biggest shareholder by percentage of total assets invested?

Atlas venture life science advisors is Q32 Bio’s biggest shareholder by percentage of total assets invested, with 1.70% of its assets in 2.09M Q32 Bio shares, valued at 13.43M$.

Who is the top mutual fund holder of Q32 Bio shares?

Vanguard MStar Total Stk Mkt Idx Invest is the top mutual fund holder of Q32 Bio shares, with 3.19% of its total shares outstanding invested in 755.25K Q32 Bio shares.

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