MAGNITE INC MGNI
$20.38
+0.5% 52w: $11.20 – $26.52
Latest 13F among current holders filed 17 days ago (Jun 18, 2026)
Price — last 12 months
research preview data11.2018.8626.52
Jun 20, 2025 Jul 2, 2026
Institutional holders
297
-9 QoQ
13F value
$1.56B
-30.0% QoQ
Smart-money holders
23
signal tier ≥ 2
New smart buyers
2
Q1 2026
Options barometer
0.5×
$26.7M calls / $52.5M puts
Institutional value by quarter
Number of holders
Who owns MGNI?
Q1 2026 filings| Fund | Type | Shares | Value | % of fund | Change |
|---|---|---|---|---|---|
| BlackRock, Inc. | Index provider | 11.7M | $138.5M | 0.0% | +0.6% |
| WELLINGTON MANAGEMENT GROUP LLP | Long only active | 9.2M | $109.2M | 0.0% | +6.5% |
| VANGUARD PORTFOLIO MANAGEMENT LLC | Diversified mechanical | 7.7M | $91.8M | 0.0% | — |
| VANGUARD CAPITAL MANAGEMENT LLC | Diversified mechanical | 6.2M | $73.5M | 0.0% | — |
| Capital Research Global Investors | Long only active | 5.0M | $59.6M | 0.0% | -61.1% |
| Boston Partners | Other | 4.7M | $56.1M | 0.1% | +14.9% |
| AMERICAN CENTURY COMPANIES INC | Diversified mechanical | 4.6M | $55.0M | 0.0% | -12.5% |
| FMR LLC | Long only active | 4.5M | $53.5M | 0.0% | -32.7% |
| DIMENSIONAL FUND ADVISORS LP | Quant stat arb | 4.0M | $47.3M | 0.0% | +10.2% |
| Nuveen, LLC | Diversified mechanical | 3.6M | $42.6M | 0.0% | +1.7% |
| GEODE CAPITAL MANAGEMENT, LLC | Index provider | 3.6M | $42.2M | 0.0% | +3.5% |
| Nine Ten Capital Management LLC ★3 | Fundamental concentrated | 3.5M | $41.4M | 13.1% | +15.9% |
| STATE STREET CORP | Index provider | 3.2M | $37.6M | 0.0% | +0.7% |
| Edenbrook Capital, LLC ★2 | Fundamental diversified | 2.8M | $33.2M | 17.0% | +0.4% |
| Granahan Investment Management, LLC | Other | 2.6M | $30.3M | 1.5% | -18.1% |
| Ophir Asset Management Pty Ltd ★2 | Fundamental concentrated | 2.1M | $25.2M | 2.9% | -11.2% |
| 325 CAPITAL LLC ★3 | Fundamental concentrated | 2.0M | $23.8M | 8.7% | Held |
| KENNEDY CAPITAL MANAGEMENT LLC | Other | 1.8M | $20.8M | 0.4% | +22.1% |
| JANE STREET GROUP, LLC | Market maker | 1.7M | $19.8M | 0.0% | +338.7% |
| No Street GP LP ★3 | Fundamental concentrated | 1.6M | $19.3M | 1.3% | +10.4% |
| Schonfeld Strategic Advisors LLC | Multistrat pod | 1.6M | $19.1M | 0.2% | +105.9% |
| GOLDMAN SACHS GROUP INC | Bank broker | 1.5M | $17.8M | 0.0% | -14.8% |
| Balyasny Asset Management L.P. | Multistrat pod | 1.5M | $17.8M | 0.0% | +71.8% |
| ROYCE & ASSOCIATES LP | Other | 1.4M | $16.2M | 0.2% | +17.1% |
| Maestria Partners LLC ★3 | Fundamental concentrated | 1.4M | $16.2M | 5.9% | Held |
| Blue Grotto Capital, LLC ★2 | Fundamental concentrated | 1.3M | $15.8M | 1.8% | -18.4% |
| NORTHERN TRUST CORP | Index provider | 1.3M | $15.7M | 0.0% | +4.0% |
| VICTORY CAPITAL MANAGEMENT INC | Diversified mechanical | 1.3M | $15.0M | 0.0% | +738.3% |
| GRIZZLYROCK CAPITAL, LLC ★3 | Fundamental concentrated | 1.2M | $14.7M | 11.7% | +116.6% |
| MILLENNIUM MANAGEMENT LLC | Multistrat pod | 1.2M | $14.7M | 0.0% | +5099.0% |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | Index provider | 1.2M | $14.0M | 0.0% | -0.6% |
| Bank of New York Mellon Corp | Diversified mechanical | 1.1M | $13.5M | 0.0% | -3.8% |
| BANK OF AMERICA CORP /DE/ | Bank broker | 1.1M | $13.4M | 0.0% | +72.6% |
| CITADEL ADVISORS LLC | Multistrat pod | 1.1M | $12.5M | 0.0% | +93.4% |
| VANGUARD FIDUCIARY TRUST CO | Diversified mechanical | 997.1K | $11.8M | 0.0% | — |
| Meros Investment Management, LP ★2 | Fundamental diversified | 992.4K | $11.8M | 5.1% | +20.2% |
| MORGAN STANLEY | Bank broker | 926.8K | $11.0M | 0.0% | -50.2% |
| Kopion Asset Management, LLC ★3 | Fundamental concentrated | 855.9K | $10.2M | 7.9% | +39.3% |
| Man Group plc | Quant stat arb | 664.0K | $7.9M | 0.0% | +113.1% |
| Qube Research & Technologies Ltd | Quant stat arb | 661.1K | $7.9M | 0.0% | +225.7% |
| OBERWEIS ASSET MANAGEMENT INC/ | Other | 647.6K | $7.7M | 0.2% | +1.9% |
| PICTON MAHONEY ASSET MANAGEMENT | Other | 643.1K | $7.6M | 0.1% | +65.7% |
| SILVERCREST ASSET MANAGEMENT GROUP LLC | Other | 616.1K | $7.3M | 0.1% | -10.1% |
| Park West Asset Management LLC ★2 | Fundamental diversified | 598.4K | $7.1M | 0.6% | New |
| NOMURA ASSET MANAGEMENT CO LTD | Diversified mechanical | 593.9K | $7.1M | 0.0% | -4.6% |
| CenterBook Partners LP | Other | 564.2K | $6.7M | 0.4% | +227.0% |
| KING LUTHER CAPITAL MANAGEMENT CORP | Other | 531.1K | $6.3M | 0.0% | +3.0% |
| Pacer Advisors, Inc. | Diversified mechanical | 501.6K | $6.0M | 0.0% | New |
| JPMORGAN CHASE & CO | Bank broker | 486.9K | $5.6M | 0.0% | -3.9% |
| Capital World Investors | Long only active | 456.7K | $5.4M | 0.0% | New |
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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