Magnite, Inc.: which funds bought and sold
Institutions that bought and sold Magnite shares in Q2 2026, from the holdings they reported to the SEC on Form 13F for March 31, 2026 and June 30, 2026.
Between March 31, 2026 and June 30, 2026, 162 institutions that filed 13F reports for both quarters added to or opened positions in Magnite, and 126 cut or closed them. Together they added a net 10.6M shares, +8.1% on what they held at the start of the quarter. Active managers and hedge funds on our list were net sellers of 1.1M shares (−2.4%); index fund managers were net buyers of 2.4M shares (+6.7%). 47 opened a new position and 37 sold out entirely.
Bought, Q2 2026 162 institutions, 47 of them new holders Sold, Q2 2026 126 institutions, 37 of them sold out
Net change, all compared +10.6M shares (+8.1%)
Net change, active managers −1.1M shares (−2.4%), 29 bought, 28 sold
Buyers versus sellers
162 bought 47 126 sold
Active managers and hedge funds 29 bought · 28 sold · −1.1M
Index fund managers 8 bought · 3 sold · +2.4M
Other institutions 125 bought · 95 sold · +9.3M
Biggest buyers
| Institution | Change in shares | Shares June 30, 2026 | Value |
|---|---|---|---|
| FMR LLC Active manager | +3.3M +72.1% | 7.8M | $147M |
| Canada Pension Plan Investment Board | +2.9M +6403.7% | 3.0M | $56.8M |
| 325 Capital LLC | +1.4M +70.2% | 3.4M | $64.8M |
| Park West Asset Management LLC Hedge fund | +1.4M +234.2% | 2.0M | $38M |
| Qube Research & Technologies Ltd Hedge fund | +1.3M +195.9% | 2.0M | $37.1M |
| Dimensional Fund Advisors LP | +1.3M +32.0% | 5.3M | $99.8M |
| Morgan Stanley | +1.1M +114.9% | 2.0M | $37.8M |
| Blackrock, Inc. Index funds | +1.1M +9.1% | 12.7M | $241M |
| First Eagle Investment Management, LLC Active manager | +891K +197.9% | 1.3M | $25.5M |
| Edenbrook Capital, LLC | +758K +27.1% | 3.6M | $67.5M |
| Ameriprise Financial Inc | +620K New position | 620K | $11.8M |
| Bank Of Montreal | +534K New position | 534K | $10.1M |
| Jane Street Group, LLC | +531K +31.8% | 2.2M | $41.7M |
| Granahan Investment Management, LLC | +530K +20.7% | 3.1M | $58.5M |
| Evr Research LP | +480K New position | 480K | $9.1M |
| Vanguard Portfolio Management LLC Index funds | +471K +6.1% | 8.2M | $156M |
| Jump Financial, LLC | +428K New position | 428K | $8.1M |
| Blue Grotto Capital, LLC | +378K +28.4% | 1.7M | $32.4M |
| State Street Corp Index funds | +365K +11.5% | 3.5M | $67M |
| Trexquant Investment LP Hedge fund | +333K New position | 333K | $6.3M |
| Institution | Change in shares | Shares June 30, 2026 | Value |
|---|---|---|---|
| FMR LLC Active manager | +3.3M +72.1% | 7.8M | $147M |
| Park West Asset Management LLC Hedge fund | +1.4M +234.2% | 2.0M | $38M |
| Qube Research & Technologies Ltd Hedge fund | +1.3M +195.9% | 2.0M | $37.1M |
| First Eagle Investment Management, LLC Active manager | +891K +197.9% | 1.3M | $25.5M |
| Trexquant Investment LP Hedge fund | +333K New position | 333K | $6.3M |
| Alyeska Investment Group, L.P. Hedge fund | +327K New position | 327K | $6.2M |
| Marshall Wace, LLP Hedge fund | +299K +705.0% | 342K | $6.5M |
| Boston Partners Active manager | +294K +6.2% | 5.0M | $95.9M |
| Clough Capital Partners L P Hedge fund | +160K New position | 160K | $3M |
| Exoduspoint Capital Management, LP Hedge fund | +123K +82.2% | 272K | $5.2M |
Biggest sellers
| Institution | Change in shares | Shares June 30, 2026 | Value |
|---|---|---|---|
| Wellington Management Group LLP Active manager | −3.1M −34.2% | 6.0M | $115M |
| No Street Gp LP | −1.6M Sold out | 0 | — |
| Capital Research Global Investors Active manager | −1.2M −22.9% | 3.9M | $73.4M |
| Schonfeld Strategic Advisors LLC Hedge fund | −1.0M −65.0% | 562K | $10.7M |
| Balyasny Asset Management L.P. Hedge fund | −834K −55.6% | 667K | $12.7M |
| Ophir Asset Management Pty Ltd | −668K −31.5% | 1.5M | $27.5M |
| Man Group PLC Hedge fund | −611K −92.0% | 53K | $1M |
| Citadel Advisors LLC Hedge fund | −580K −55.1% | 473K | $9M |
| Pacer Advisors, Inc. | −502K Sold out | 0 | — |
| Millennium Management LLC Hedge fund | −470K −38.0% | 765K | $14.5M |
| Capital World Investors Active manager | −457K Sold out | 0 | — |
| Centerbook Partners LP Hedge fund | −447K −79.2% | 118K | $2.2M |
| Two Sigma Investments, LP Hedge fund | −352K −89.2% | 43K | $809,668 |
| Caption Management, LLC | −259K −64.1% | 146K | $2.8M |
| Nine Ten Capital Management LLC | −220K −6.3% | 3.3M | $61.9M |
| Maestria Partners LLC | −205K −15.0% | 1.2M | $22M |
| Wedge Capital Management L L P Active manager | −190K Sold out | 0 | — |
| Sei Investments Co | −185K −52.8% | 166K | $3.1M |
| Kopion Asset Management, LLC | −181K −21.2% | 674K | $12.8M |
| Walleye Trading LLC | −179K Sold out | 0 | — |
| Institution | Change in shares | Shares June 30, 2026 | Value |
|---|---|---|---|
| Wellington Management Group LLP Active manager | −3.1M −34.2% | 6.0M | $115M |
| Capital Research Global Investors Active manager | −1.2M −22.9% | 3.9M | $73.4M |
| Schonfeld Strategic Advisors LLC Hedge fund | −1.0M −65.0% | 562K | $10.7M |
| Balyasny Asset Management L.P. Hedge fund | −834K −55.6% | 667K | $12.7M |
| Man Group PLC Hedge fund | −611K −92.0% | 53K | $1M |
| Citadel Advisors LLC Hedge fund | −580K −55.1% | 473K | $9M |
| Millennium Management LLC Hedge fund | −470K −38.0% | 765K | $14.5M |
| Capital World Investors Active manager | −457K Sold out | 0 | — |
| Centerbook Partners LP Hedge fund | −447K −79.2% | 118K | $2.2M |
| Two Sigma Investments, LP Hedge fund | −352K −89.2% | 43K | $809,668 |
New positions
| Institution | Shares | Value June 30, 2026 |
|---|---|---|
| Ameriprise Financial Inc | 620K | $11.8M |
| Bank Of Montreal | 534K | $10.1M |
| Evr Research LP | 480K | $9.1M |
| Jump Financial, LLC | 428K | $8.1M |
| Trexquant Investment LPHedge fund | 333K | $6.3M |
| Alyeska Investment Group, L.P.Hedge fund | 327K | $6.2M |
| Pillsbury Lake Capital LLC | 218K | $4.1M |
| Occam Crest Management LP | 195K | $3.8M |
| Great Lakes Advisors, LLC | 177K | $3.4M |
| Clough Capital Partners L PHedge fund | 160K | $3M |
Sold out
| Institution | Shares | Value March 31, 2026 |
|---|---|---|
| No Street Gp LP | 1.6M | $19.3M |
| Pacer Advisors, Inc. | 502K | $6M |
| Capital World InvestorsActive manager | 457K | $5.4M |
| Wedge Capital Management L L PActive manager | 190K | $2.3M |
| Walleye Trading LLC | 179K | $2.1M |
| Brevan Howard Capital Management LPHedge fund | 133K | $1.6M |
| Twinbeech Capital LP | 132K | $1.6M |
| Holocene Advisors, LPHedge fund | 102K | $1.2M |
| Teachers Retirement System Of The State Of Kentucky | 77K | $913,000 |
| Tudor Investment Corp Et AlHedge fund | 74K | $874,903 |
Who holds the shares
- Institutions reporting
- 303
- Ten largest holders
- 44.7% of 13F-reported shares
- Index fund managers
- 27.0% of 13F-reported shares
- Active managers and hedge funds
- 31.0% of 13F-reported shares
| Type | Bought | Sold | New | Sold out | Net change in shares | Net % |
|---|---|---|---|---|---|---|
| Active managers and hedge funds | 29 | 28 | 12 | 8 | −1.1M | −2.4% |
| Index fund managers | 8 | 3 | 0 | 1 | +2.4M | +6.7% |
| Other institutions | 125 | 95 | 35 | 28 | +9.3M | +18.4% |