$QNT

$37.53 +$1.03 (2.82%) Close

$QNT Overview Financial Statements SEC Filings Executives News Red Flags Capital Raising Ownership Insider Transactions Congressional Trades

Ownership

13F as of Q2 2026 · 33.9M shares outstanding

Who owns QNT?

By type of holder

Institutions 100.0% Insiders 0.0% Everyone else 0.0%

Concentration Top 10 holders own 51.2%

Capital World Investors 13.4% · Citadel Advisors LLC 6.8%

Institutional ownership

100.0%

+100.0 pts vs last qtr

Institutional holders

173

+173 vs last qtr

Net shares bought

+34.0M

by institutions in Q2 2026

New / sold out

173 / 0

positions opened vs closed

How is ownership changing?

Institutions, last 8 quarters

Biggest buyers in Q2 2026

Capital World Investors NEW +4.6M
Citadel Advisors LLC NEW +2.3M

Biggest sellers in Q2 2026

None.

Who is planning to sell?

No insider has filed a notice of proposed sale (Form 144) for Quantinuum Inc in the last 12 months.

Is your stake being diluted?

There are not yet two fiscal years of reported share counts for Quantinuum Inc.

How patient are the owners?

Institutional shares by how long they've been held

5+ years0% 3–5 years0% 1–3 years0% Under 1 year100%

Quarterly turnover

—

of institutional shares changed hands

Top 10 managers, median time held

0 quarters

Super Investors

Investment managers reporting QNT on Form 13F

Holder	Shares	% of company	Change vs last qtr	Held since	% of their book
CW Capital World Investors	4.6M	13.44%	NEW	Q2 '26	0.0%
Shares held by quarter Peak holding4.6M (Q2'26) Change over 8 quarters+4.6M Share of the company13.440% Capital World Investors's full portfolio →
CA Citadel Advisors LLC	2.3M	6.78%	NEW	Q2 '26	0.0%
Shares held by quarter Peak holding2.3M (Q2'26) Change over 8 quarters+2.3M Share of the company6.780% Citadel Advisors LLC's full portfolio →

Capital World Investors

4.6M

% of company

13.44%

Change vs last qtr

NEW

Held since

Q2 '26

Citadel Advisors LLC

2.3M

% of company

6.78%

Change vs last qtr

NEW

Held since

Q2 '26

23 more super investors behind a free account

See every manager holding Quantinuum Inc, how their position has changed, and how long they've held it.

Institutional Funds

Mutual funds and ETFs reporting QNT on Form N-PORT; together they hold 34.6% of the company

Fund	Position value	Shares	% of company	% of the fund	As of
AA Asset Allocation Fund American Funds Insurance Series	$156M	1.9M	5.64%	0.55%	June 30, 2026
DQ Defiance Quantum ETF ETF Series Solutions	$98.1M	1.2M	3.54%	1.57%	June 30, 2026

Asset Allocation Fund

American Funds Insurance Series

Position value

$156M

% of company

5.64%

% of the fund

0.55%

As of

June 30, 2026

Defiance Quantum ETF

ETF Series Solutions

Position value

$98.1M

% of company

3.54%

% of the fund

1.57%

As of

June 30, 2026

23 more funds behind a free account

See every fund holding Quantinuum Inc and how much of the fund the position is.

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