IonQ is a computer hardware company in the technology sector on NYSE, led by Rima Alameddine, with a market cap of $19.4B. As of Q3 2025, 51% of shares are held by 589 institutional investors, with VANGUARD GROUP INC as the largest holder at 9.09%.
Overview of institutional ownership in IONQ as of Q3 2025 with a market cap of $19.9B
Based on market cap of $19.9B as of Q3 2025. Institutional (non-HF) excludes hedge funds to avoid double counting.
Institutions with the largest positions in IONQ as of Q3 2025
| Institution | Position Value |
|---|---|
VANGUARD GROUP INC Institution | $1.8B 0.03% of portfolio |
MORGAN STANLEY RIA/Wealth | $1.6B 0.10% of portfolio |
B BlackRock, Inc. Institution | $1.4B 0.02% of portfolio |
GEODE CAPITAL MANAGEMENT LLC ETF Provider | $408.1M 0.03% of portfolio |
STATE STREET CORP Institution | $387.4M 0.01% of portfolio |
D D. E. Shaw & Co., Inc. Institution | $335.1M 0.29% of portfolio |
RENAISSANCE TECHNOLOGIES LLC Hedge Fund•Quant | $312.4M 0.41% of portfolio |
UBS Group AG Institution | $264.5M 0.05% of portfolio |
PRICE T ROWE ASSOCIATES INC /MD/ Long Only Manager | $199.7M 0.02% of portfolio |
JPMORGAN CHASE & CO Institution | $185.0M 0.01% of portfolio |
Institutional buying and selling activity for IONQ in Q3 2025
| Institution | Net Bought |
|---|---|
MORGAN STANLEY RIA/Wealth | +$372.5M +6.1M shares |
VANGUARD GROUP INC Institution | +$282.1M +4.6M shares |
B BlackRock, Inc. Institution | +$259.9M +4.2M shares |
RENAISSANCE TECHNOLOGIES LLC Hedge Fund•Quant | +$250.5M +4.1M shares |
PRICE T ROWE ASSOCIATES INC /MD/ Long Only Manager | +$109.0M +1.8M shares |
D D. E. Shaw & Co., Inc. Institution | +$86.6M +1.4M shares |
GEODE CAPITAL MANAGEMENT LLC ETF Provider | +$79.1M +1.3M shares |
STATE STREET CORP Institution | +$64.2M +1.0M shares |
FMR LLC Institution | +$63.9M +1.0M shares |
GOLDMAN SACHS GROUP INC Institution | +$63.3M +1.0M shares |
| Institution | Net Sold |
|---|---|
Cerberus Capital Management, L.P. Private Equity | −$141.8M −2.3M shares |
T Toroso Investments, LLC ETF Provider | −$48.9M −794.4K shares |
AMAZON COM INC Institution | −$36.7M −854.2K shares |
UBS GLOBAL ASSET MANAGEMENT AMERICAS INC Long Only Manager | −$21.3M −345.6K shares |
WESTFIELD CAPITAL MANAGEMENT CO LP Long Only Manager | −$18.7M −304.0K shares |
A Amundi Institution | −$16.3M −363.6K shares |
Connor, Clark & Lunn Investment Management Ltd. Long Only Manager | −$14.5M −235.7K shares |
FIRST MANHATTAN CO Institution | −$14.2M −231.3K shares |
N Neuberger Berman Group LLC Institution | −$11.8M −192.2K shares |
CITADEL ADVISORS LLC Hedge Fund•Multi-Strategy | −$11.8M −191.6K shares |
Institutions that initiated new positions or completely exited IONQ in Q3 2025
| Institution | Position Value |
|---|---|
N NASPERS LTD Institution | $75.9M 1.2M shares |
FRONTIER CAPITAL MANAGEMENT CO LLC Long Only Manager | $38.6M 628.3K shares |
Vident Advisory, LLC ETF Provider | $15.8M 256.7K shares |
S STRATEGIC PLANNING GROUP, LLC RIA/Wealth | $6.2M 101.4K shares |
KORNITZER CAPITAL MANAGEMENT INC /KS Long Only Manager | $4.2M 68.5K shares |
C CAPROCK Group, Inc. Fund of Funds | $3.1M 71.7K shares |
P Polymer Capital Management LTD Hedge Fund•Multi-Strategy | $2.7M 44.2K shares |
SORA INVESTORS LLC Hedge Fund•Long/Short | $2.2M 35.0K shares |
B BANQUE PICTET & CIE SA Institution | $1.8M 30.0K shares |
S SPX Equities Gestao de Recursos Ltda Institution | $1.8M 30.0K shares |
| Institution | Previous Position |
|---|---|
AMAZON COM INC Institution | $36.7M 854.2K shares |
A Amundi Institution | $16.3M 363.6K shares |
M MAPLELANE CAPITAL, LLC Hedge Fund•Long/Short | $4.0M 94.0K shares |
Walleye Trading LLC RIA/Wealth | $3.9M 91.6K shares |
T TWINBEECH CAPITAL LP Hedge Fund•Quant | $2.9M 67.8K shares |
Scientech Research LLC Hedge Fund•Market Neutral | $2.7M 61.9K shares |
U Union Bancaire Privee, UBP SA Institution | $2.7M 82.5K shares |
L LMR Partners LLP Institution | $1.8M 42.4K shares |
M MISSION WEALTH MANAGEMENT, LLC Institution | $1.4M 32.2K shares |
Magnetar Financial LLC Hedge Fund•Multi-Strategy | $1.0M 24.0K shares |
Institutions with the largest Call and Put options positions in IONQ as of Q3 2025
| Institution | Position Value |
|---|---|
SUSQUEHANNA INTERNATIONAL GROUP, LLP Private Equity | $261.3M 42.5K contracts |
J JANE STREET GROUP, LLC Institution | $229.6M 37.3K contracts |
CITADEL ADVISORS LLC Hedge Fund•Multi-Strategy | $167.7M 27.3K contracts |
D D. E. Shaw & Co., Inc. Institution | $98.3M 16.0K contracts |
W WOLVERINE TRADING, LLC Institution | $68.1M 10.6K contracts |
C CANTOR FITZGERALD, L. P. Institution | $60.3M 9.8K contracts |
N NOMURA HOLDINGS INC Institution | $55.0M 8.9K contracts |
CAPITAL FUND MANAGEMENT S.A. Hedge Fund•Quant Macro | $31.3M 5.1K contracts |
S Squarepoint Ops LLC Hedge Fund•Quant | $19.5M 3.2K contracts |
Walleye Trading LLC RIA/Wealth | $19.3M 3.1K contracts |
| Institution | Position Value |
|---|---|
SUSQUEHANNA INTERNATIONAL GROUP, LLP Private Equity | $307.9M 50.1K contracts |
CITADEL ADVISORS LLC Hedge Fund•Multi-Strategy | $166.6M 27.1K contracts |
J JANE STREET GROUP, LLC Institution | $101.1M 16.4K contracts |
QVT Financial LP Hedge Fund•Multi-Strategy | $93.6M 15.2K contracts |
CAPITAL FUND MANAGEMENT S.A. Hedge Fund•Quant Macro | $70.5M 11.5K contracts |
BALYASNY ASSET MANAGEMENT LLC Hedge Fund•Multi-Strategy | $64.5M 10.5K contracts |
GOLDMAN SACHS GROUP INC Institution | $61.4M 10.0K contracts |
C CANTOR FITZGERALD, L. P. Institution | $49.5M 8.1K contracts |
BANK OF MONTREAL /CAN/ Institution | $42.8M 7.0K contracts |
W WOLVERINE TRADING, LLC Institution | $41.6M 6.5K contracts |
Institutions with IONQ as the highest % of their portfolio as of Q3 2025
| Institution | Portfolio Weight |
|---|---|
SherpaCapital, LLC Venture Capital | 36.34% $6.4M |
N NASPERS LTD Institution | 11.46% $75.9M |
HAMILTON LANE ADVISORS LLC Fund of Funds | 9.88% $16.0M |
O Orion Investment Co RIA/Wealth | 5.38% $16.9M |
3.76% $5.4M | |
MORGENS WATERFALL VINTIADIS & CO INC Hedge Fund•Long/Short | 3.31% $4.8M |
LANSDOWNE PARTNERS LLP Hedge Fund•Long/Short | 3.20% $38.6M |
American Alpha Advisors, LLC RIA/Wealth | 2.25% $3.1M |
O Owen LaRue, LLC Institution | 1.92% $4.7M |
Q Quantitative Investment Management, LLC Hedge Fund•Quant Macro | 1.85% $12.2M |
Discover hedge funds investing in IONQ

| Top Holding | Sector | Market Value | Weight |
|---|---|---|---|
Medical - Healthcare Information Services Healthcare | $56.2M | 3.82% | |
ETF ETF | $36.0M | 2.45% | |
Unknown Unknown | $26.9M | 1.83% |
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