IonQ Ownership | Who Owns IonQ?

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IonQ Ownership Summary

IonQ is owned by 52.47% institutional investors, 3.20% insiders, and 44.33% retail investors. Vanguard group is the largest institutional shareholder, holding 9.97% of IONQ shares. Vanguard Total Stock Mkt Idx Inv is the top mutual fund, with 2.23% of its assets in IonQ shares.

IONQ Ownership Benchmark

Type	Name	% Inst	% Insiders	% Retail
Stock	IonQ	52.47%	3.20%	44.33%
Sector	Technology Stocks	144.02%	12.52%	-56.54%

Institutional Shareholders

Top Institutional Shareholders by Total Shares

Holder	Shares	% Holding	Value
Vanguard group	21.37M	9.97%	$892.80M
Blackrock funding, inc. /de	18.26M	7.27%	$784.48M
Blackrock	14.16M	6.80%	$99.55M
Geode capital management	4.47M	2.08%	$186.59M
State street	4.19M	2.01%	$29.42M
Sg americas securities	2.65M	1.28%	$18.66M
Ubs group	2.47M	1.15%	$103.28M
Jpmorgan chase	2.47M	1.15%	$103.10M
Morgan stanley	2.30M	1.10%	$16.17M
Cerberus capital management	2.43M	0.97%	$104.57M

Top Institutional Shareholders by % of Total Assets

Holder	Shares	% Assets	Value
Acme	203.75K	45.61%	$8.76M
Hamilton lane advisors	260.00K	8.25%	$11.17M
Orion investment	271.46K	4.13%	$11.66M
Invus financial advisors	500.00K	3.94%	$3.52M
Cerberus capital management	2.43M	3.09%	$104.57M
Lansdowne partners (uk) llp	501.64K	2.80%	$21.56M
Morgens waterfall vintiadis	78.50K	2.47%	$3.37M
Amazon com	854.21K	1.51%	$36.71M
Rakuten securities	90.05K	1.48%	$3.76M
Fortress private ledger	69.54K	1.36%	$2.99M

Top Buyers

Holder	Shares	% Assets	Change
Cerberus capital management	2.43M	3.09%	2.43M
Ubs group	2.47M	0.02%	2.34M
Jpmorgan chase	2.47M	0.01%	2.29M
Blackrock funding, inc. /de	18.26M	0.01%	2.23M
Blackrock	14.16M	0.00%	1.78M

Top Sellers

Holder	Shares	% Assets	Change
Healthcare of ontario pension plan trust fund	-	-	-4.44M
Voloridge investment management	-	-	-2.22M
Softbank group	-	-	-1.59M
Two sigma advisers, lp	-	-	-1.56M
Teramo advisors	-	-	-1.10M

New Positions

Holder	Shares	% Assets	Change	Value
Cerberus capital management	2.43M	3.09%	2.43M	$104.57M
Amazon com	854.21K	1.51%	854.21K	$36.71M
Ameriprise financial	706.70K	0.01%	706.70K	$29.52M
Westfield capital management co lp	671.63K	0.12%	671.63K	$28.86M
Two sigma investments, lp	476.02K	0.04%	476.02K	$19.88M

Sold Out

Holder	Change
Transamerica financial advisors	-2.00
Pacific capital wealth advisors	-6.00
Quarry lp	-9.00
Gps wealth strategies group	-11.00
Abound wealth management	-20.00

Institutional Ownership Trends

Date	Holdings	Change %	Shares	Change %	Ownership	Change %	Increased Position	Change %	Decreased Position	Change %
Jun 30, 2025	518	28.22%	131,684,904	33.38%	52	2.82%	343	38.31%	81	-
Mar 31, 2025	5	-98.82%	46,785	-99.95%	-	0.00%	3	-98.95%	-	-100.00%
Dec 31, 2024	385	42.59%	82,332,992	3.11%	38	2.77%	259	85.00%	68	41.67%
Sep 30, 2024	267	14.59%	79,838,902	7.28%	37	3.01%	139	21.93%	46	2.22%
Jun 30, 2024	230	-0.86%	74,389,426	-7.44%	35	2.33%	114	7.55%	43	-12.24%

Top Mutual Funds Shareholders

Holder	Shares	% Holding	Change
Vanguard Total Stock Mkt Idx Inv	6.62M	2.23%	-157.64K
iShares Russell 2000 ETF	5.59M	1.88%	-106.26K
Vanguard Small Cap Index	5.11M	1.72%	-32.68K
Vanguard Information Technology ETF	3.50M	1.18%	35.67K
Vanguard Small Cap Growth Index Inv	2.88M	0.97%	-4.58K
Morgan Stanley Growth	2.71M	0.91%	2.71M
Morgan Stanley Growth SMA	2.71M	0.91%	2.71M
Morgan Stanley Inst Growth I	2.71M	0.91%	2.71M
Vanguard Institutional Extnd Mkt Idx Tr	2.56M	0.86%	-915.97K
YieldMax Ultra Option Income Strat ETF	2.50M	0.86%	196.30K

Recent Insider Transactions

Date	Name	Role	Activity	Value
Sep 11, 2025	DACIER PAUL T	Chief Administrative Officer	Sell	$185.38K
Sep 11, 2025	Alameddine Rima	Chief Revenue Officer	Sell	$886.97K
Sep 11, 2025	de Masi Niccolo	President and CEO	Sell	$715.75K
Sep 03, 2025	Kramer Thomas G.	Chief Financial Officer	Sell	$2.70M
Aug 13, 2025	Singh Inder M	-	Sell	$2.17M

Insider Transactions Trends

Date	Buy	Sell
2025 Q3	-	13
2025 Q2	-	15
2025 Q1	1	5
2024 Q4	-	10
2024 Q3	-	6

IONQ Ownership FAQ

Who owns the most shares of IonQ?

IonQ’s largest shareholders are Vanguard group (21.37M shares, 9.97%), Blackrock funding, inc. /de (18.26M shares, 7.27%), and Blackrock (14.16M shares, 6.80%). Together, they hold 24.05% of IonQ’s total shares outstanding.

Does Blackrock own IonQ?

Yes, BlackRock owns 6.80% of IonQ, totaling 14.16M shares as of Jun 2024. This represents 0.00% of BlackRock's total assets, with a market value of 99.55M$. In the last quarter, BlackRock increased its holdings by 1.78M shares, a 14.39% change.

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

Acme is IonQ’s biggest shareholder by percentage of total assets invested, with 45.61% of its assets in 203.75K IonQ shares, valued at 8.76M$.

Who is the top mutual fund holder of IonQ shares?

Vanguard Total Stock Mkt Idx Inv is the top mutual fund holder of IonQ shares, with 2.23% of its total shares outstanding invested in 6.62M IonQ shares.

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