QUANTUM-SI INC QSI
$0.93
+0.6% 52w: $0.71 – $2.63
Latest 13F among current holders filed 32 days ago (Jun 3, 2026)
Price — last 12 months
research preview data0.711.672.63
Jun 20, 2025 Jul 2, 2026
Institutional holders
156
+21 QoQ
13F value
$48.9M
-34.1% QoQ
Smart-money holders
5
signal tier ≥ 2
New smart buyers
2
Q1 2026
Options barometer
1.5×
$472K calls / $306K puts
Institutional value by quarter
Number of holders
Who owns QSI?
Q1 2026 filings| Fund | Type | Shares | Value | % of fund | Change |
|---|---|---|---|---|---|
| BlackRock, Inc. | Index provider | 13.4M | $10.4M | 0.0% | +2.8% |
| VANGUARD CAPITAL MANAGEMENT LLC | Diversified mechanical | 7.0M | $5.4M | 0.0% | — |
| ARK Investment Management LLC ★2 | Long only active | 6.9M | $5.3M | 0.0% | -2.0% |
| Amova Asset Management Americas, Inc. ★2 | Fundamental diversified | 4.4M | $3.4M | 0.0% | -6.4% |
| Sumitomo Mitsui Trust Group, Inc. | Diversified mechanical | 4.4M | $3.4M | 0.0% | -6.4% |
| GEODE CAPITAL MANAGEMENT, LLC | Index provider | 3.8M | $3.0M | 0.0% | -6.8% |
| STATE STREET CORP | Index provider | 3.8M | $2.9M | 0.0% | +5.8% |
| AQR CAPITAL MANAGEMENT LLC | Quant stat arb | 2.4M | $1.9M | 0.0% | +2659.5% |
| UBS Group AG | Bank broker | 1.7M | $1.3M | 0.0% | +17.5% |
| VANGUARD PORTFOLIO MANAGEMENT LLC | Diversified mechanical | 1.5M | $1.2M | 0.0% | — |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Market maker | 1.5M | $1.1M | 0.0% | -37.1% |
| NORTHERN TRUST CORP | Index provider | 1.3M | $976K | 0.0% | -42.9% |
| VANGUARD FIDUCIARY TRUST CO | Diversified mechanical | 1.1M | $865K | 0.0% | — |
| Fosun International Ltd ★3 | Fundamental concentrated | 743.9K | $576K | 0.1% | Held |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | Index provider | 457.6K | $354K | 0.0% | -2.3% |
| Nuveen, LLC | Diversified mechanical | 451.4K | $349K | 0.0% | +0.9% |
| GOLDMAN SACHS GROUP INC | Bank broker | 444.2K | $344K | 0.0% | +14.8% |
| Invesco Ltd. | Index provider | 406.7K | $315K | 0.0% | +1.0% |
| XTX Topco Ltd | Market maker | 389.3K | $301K | 0.0% | -15.7% |
| ALLIANCEBERNSTEIN L.P. | Long only active | 272.2K | $299K | 0.0% | Held |
| Bank of New York Mellon Corp | Diversified mechanical | 383.1K | $297K | 0.0% | -5.7% |
| IEQ CAPITAL, LLC | Diversified mechanical | 357.7K | $277K | 0.0% | New |
| Knollwood Investment Advisory, LLC | Other | 300.0K | $232K | 0.0% | Held |
| IQ EQ FUND MANAGEMENT (IRELAND) Ltd | Other | 292.1K | $226K | 0.0% | +15.1% |
| GROUP ONE TRADING LLC | Market maker | 284.0K | $220K | 0.0% | +15.5% |
| BRIDGEWAY CAPITAL MANAGEMENT, LLC | Diversified mechanical | 261.1K | $202K | 0.0% | Held |
| IMC-Chicago, LLC | Market maker | 220.9K | $171K | 0.0% | New |
| CIBC Bancorp USA Inc. | Diversified mechanical | 208.5K | $161K | 0.0% | — |
| Verdence Capital Advisors LLC | Other | 203.9K | $158K | 0.0% | +8.5% |
| Mariner, LLC | Diversified mechanical | 199.7K | $155K | 0.0% | +251.1% |
| RHUMBLINE ADVISERS | Diversified mechanical | 193.1K | $149K | 0.0% | -0.3% |
| BANK OF AMERICA CORP /DE/ | Bank broker | 162.0K | $125K | 0.0% | -37.3% |
| Shay Capital LLC | Quant stat arb | 150.9K | $117K | 0.0% | +1.2% |
| MORGAN STANLEY | Bank broker | 129.9K | $101K | 0.0% | -67.5% |
| AlphaCore Capital LLC | Wealth advisor | 128.4K | $99K | 0.0% | +160.3% |
| CWM, LLC | Wealth advisor | 126.6K | $98K | 0.0% | +1710.6% |
| DEUTSCHE BANK AG\ | Bank broker | 119.0K | $92K | 0.0% | Held |
| RENAISSANCE TECHNOLOGIES LLC | Quant stat arb | 117.9K | $91K | 0.0% | New |
| LOS ANGELES CAPITAL MANAGEMENT LLC | Diversified mechanical | 116.3K | $90K | 0.0% | +25.1% |
| JONES FINANCIAL COMPANIES LLLP | Wealth advisor | 109.9K | $84K | 0.0% | +11.1% |
| MetLife Investment Management, LLC | Insurance | 101.6K | $79K | 0.0% | +196.8% |
| PRICE T ROWE ASSOCIATES INC /MD/ | Diversified mechanical | 96.5K | $75K | 0.0% | Held |
| SIMPLEX TRADING, LLC | Market maker | 90.5K | $70K | 0.0% | +12.5% |
| Vanguard Global Advisers, LLC | Diversified mechanical | 84.8K | $66K | 0.0% | — |
| Cerity Partners LLC | Diversified mechanical | 80.7K | $62K | 0.0% | New |
| JPMORGAN CHASE & CO | Bank broker | 83.5K | $62K | 0.0% | +8.6% |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. | Index provider | 74.9K | $58K | 0.0% | +2.7% |
| WEALTH ENHANCEMENT ADVISORY SERVICES, LLC | Wealth advisor | 89.5K | $58K | 0.0% | New |
| CAPTRUST FINANCIAL ADVISORS | Wealth advisor | 69.0K | $53K | 0.0% | +99.5% |
| Virtu Financial LLC | Market maker | 64.8K | $50K | 0.0% | -72.8% |
Exits are not a bearish signal: our backtest shows stocks specialists exit keep outperforming for 3+ quarters — selling usually means profit-taking, not a forecast.
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