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MGNI

Magnite, Inc.
$20.20 -0.21 (-1.03%) At close · Jul 14
Market Cap
$2.93B
Shares
143,215,003

Institutional ownership from SEC Form 13F filings. Investment managers with more than $100 million in U.S. equities must disclose their positions every quarter, within 45 days of quarter-end, so the holdings shown can lag the market by up to a quarter.

The Jun 30, 2026 filing window is still open — showing the latest known positions. Funds that have not filed yet carry their prior-quarter positions; a fund that filed without this stock counts as sold out.
Holders: 298
Total Value: $1,549,214,327
Total Shares: 129,776,380
Showing 1–100 of 314 holdings by value · page 1 of 4

Institutional Ownership Trend

26 quarters

Superinvestors Holding MGNI

All superinvestors →
Mario Gabelli $720,557 Joel Greenblatt $153,073

Holder Concentration

Across 297 13F filers
Top Holder
9.0%
Jun 2023 → Mar 2026 · range 9.0% – 12.1%
of institutional value
Top 5
28.3%
Jun 2023 → Mar 2026 · range 28.3% – 39.7%
of institutional value
Top 10
43.8%
Jun 2023 → Mar 2026 · range 43.8% – 57.8%
of institutional value
HHI
291
Jun 2023 → Mar 2026 · range 291 – 467
Broadly held
Showing 100 of 314
All Common Calls Puts
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Holder Value (USD) % of 13F Shares Open
Mega BlackRock, Inc. $138,491,045 8.94% 11,657,496
Mega WELLINGTON MANAGEMENT GROUP LLP $109,189,992 7.05% 9,191,077
Mega VANGUARD CAPITAL MANAGEMENT LLC $73,541,987 4.75% 6,190,403
Mega Capital Research Global Investors $59,641,033 3.85% 5,020,289
Large Boston Partners $56,071,971 3.62% 4,719,863
Mega AMERICAN CENTURY COMPANIES INC $54,966,574 3.55% 4,626,816
Mega FMR LLC $53,548,135 3.46% 4,507,419
Mega DIMENSIONAL FUND ADVISORS LP $47,326,045 3.05% 3,983,674
Mega Nuveen, LLC $42,649,495 2.75% 3,590,025
Mega GEODE CAPITAL MANAGEMENT, LLC $42,219,025 2.73% 3,553,790
Small Nine Ten Capital Management LLC $41,357,642 2.67% 3,481,283
Mega STATE STREET CORP $37,578,091 2.43% 3,163,139
Small Edenbrook Capital, LLC $33,240,667 2.15% 2,798,036
Mid Granahan Investment Management, LLC $30,334,546 1.96% 2,553,413
Small Ophir Asset Management Pty Ltd $25,162,030 1.62% 2,118,016
Small 325 CAPITAL LLC $23,823,997 1.54% 2,005,387
Mid KENNEDY CAPITAL MANAGEMENT LLC $20,832,078 1.34% 1,753,542
Mega JANE STREET GROUP, LLC $19,817,740 1.28% 1,668,160
Mid No Street GP LP $19,343,586 1.25% 1,628,248
Large Schonfeld Strategic Advisors LLC $19,067,887 1.23% 1,605,041
Mega GOLDMAN SACHS GROUP INC $17,830,121 1.15% 1,500,852
Large Balyasny Asset Management L.P. $17,825,262 1.15% 1,500,443
Large Caption Management, LLC $17,820,000 1.15% 1,500,000
Mid ROYCE & ASSOCIATES LP $16,222,009 1.05% 1,365,489
Small Maestria Partners LLC $16,198,439 1.05% 1,363,505
Small Blue Grotto Capital, LLC $15,785,930 1.02% 1,328,782
Mega NORTHERN TRUST CORP Bank $15,712,141 1.01% 1,322,571
Mega VICTORY CAPITAL MANAGEMENT INC $15,046,281 0.97% 1,266,522
Small GRIZZLYROCK CAPITAL, LLC $14,715,518 0.95% 1,238,680
Mega MILLENNIUM MANAGEMENT LLC $14,665,349 0.95% 1,234,457
Mega CHARLES SCHWAB INVESTMENT MANAGEMENT INC $14,023,520 0.91% 1,180,431
Mega Bank of New York Mellon Corp Bank $13,522,013 0.87% 1,138,217
Mega BANK OF AMERICA CORP /DE/ Bank $13,367,326 0.86% 1,125,196
Large Squarepoint Ops LLC $12,953,952 0.84% 1,090,400
Small Kopion Asset Management, LLC $12,801,079 0.83% 674,451
Mega CITADEL ADVISORS LLC $12,508,546 0.81% 1,052,908
Mega CITADEL ADVISORS LLC $12,355,200 0.80% 1,040,000
Mega VANGUARD FIDUCIARY TRUST CO Bank $11,845,334 0.76% 997,082
Small Meros Investment Management, LP $11,789,129 0.76% 992,351
Mega MORGAN STANLEY $11,010,605 0.71% 926,819
Large Walleye Trading LLC $9,652,500 0.62% 812,500
Large Man Group plc $7,887,808 0.51% 663,957
Large Qube Research & Technologies Ltd $7,853,357 0.51% 661,057
Mid OBERWEIS ASSET MANAGEMENT INC/ $7,693,488 0.50% 647,600
Mid PICTON MAHONEY ASSET MANAGEMENT $7,639,766 0.49% 643,078
Large SILVERCREST ASSET MANAGEMENT GROUP LLC $7,319,077 0.47% 616,084
Small Edenbrook Capital, LLC $7,128,000 0.46% 600,000
Mid Park West Asset Management LLC $7,108,754 0.46% 598,380
Large NOMURA ASSET MANAGEMENT CO LTD $7,055,532 0.46% 593,900
Mid CenterBook Partners LP $6,702,173 0.43% 564,156
Large KING LUTHER CAPITAL MANAGEMENT CORP $6,309,064 0.41% 531,066
Large Pacer Advisors, Inc. $5,958,746 0.38% 501,578
Mega JPMORGAN CHASE & CO $5,783,989 0.37% 486,868
Mega Capital World Investors $5,425,263 0.35% 456,672
Mid QVT Financial LP $5,392,450 0.35% 453,910
Mega UBS Group AG $5,350,145 0.35% 450,349
Large First Eagle Investment Management, LLC $5,349,421 0.35% 450,288
Mega PRINCIPAL FINANCIAL GROUP INC $5,297,885 0.34% 445,950
Mega NORDEA INVESTMENT MANAGEMENT AB $5,001,574 0.32% 421,008
Large Caption Management, LLC $4,812,029 0.31% 405,053
Small S SQUARED TECHNOLOGY, LLC $4,786,000 0.31% 402,862
Mega TWO SIGMA INVESTMENTS, LP $4,690,889 0.30% 394,856
Large COMMONWEALTH EQUITY SERVICES, LLC $4,271,691 0.28% 359,570
Large SEI INVESTMENTS CO $4,168,240 0.27% 350,862
Small 1492 Capital Management LLC $4,045,638 0.26% 340,542
Mid HARBOR CAPITAL ADVISORS, INC. $3,864,100 0.25% 325,261
Mega UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC $3,837,449 0.25% 323,018
Small Manatuck Hill Partners, LLC $3,682,800 0.24% 310,000
Small Lisanti Capital Growth, LLC $3,676,147 0.24% 309,440
Mega SUSQUEHANNA INTERNATIONAL GROUP, LLP $3,656,722 0.24% 307,805
Large Squarepoint Ops LLC $3,575,095 0.23% 300,934
Large Walleye Trading LLC $3,554,496 0.23% 299,200
Mega RAYMOND JAMES FINANCIAL INC $3,465,572 0.22% 291,715
Micro Norwood Investment Partners, LP $3,385,800 0.22% 285,000
Mega Swiss National Bank Bank $3,377,484 0.22% 284,300
Mega SUSQUEHANNA INTERNATIONAL GROUP, LLP $3,306,204 0.21% 278,300
Mid ALGERT GLOBAL LLC $3,196,135 0.21% 269,035
Mega Invesco Ltd. $3,105,074 0.20% 261,370
Mid Senvest Management, LLC $2,662,308 0.17% 224,100
Mega ALLIANCEBERNSTEIN L.P. $2,651,509 0.17% 223,191
Large VOYA INVESTMENT MANAGEMENT LLC $2,501,534 0.16% 210,567
Small Hilton Capital Management, LLC $2,472,869 0.16% 208,154
Mega SUSQUEHANNA INTERNATIONAL GROUP, LLP $2,396,196 0.15% 201,700
Mid RICE HALL JAMES & ASSOCIATES, LLC $2,290,559 0.15% 192,808
Large STATE OF WISCONSIN INVESTMENT BOARD $2,203,383 0.14% 185,470
Mega BARCLAYS PLC $2,146,073 0.14% 180,646
Mega RHUMBLINE ADVISERS $2,138,114 0.14% 179,976
Large Walleye Trading LLC $2,131,200 0.14% 179,394
Large CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM Pension $2,097,152 0.14% 176,528
Micro P.A.W. CAPITAL CORP $2,019,600 0.13% 170,000
Mega PRICE T ROWE ASSOCIATES INC /MD/ $1,965,427 0.13% 165,440
Mega LPL Financial LLC $1,846,674 0.12% 155,444
Small MOODY NATIONAL BANK TRUST DIVISION Bank $1,844,893 0.12% 97,202
Small DBA TRADING, LLC $1,782,000 0.12% 150,000
Large ExodusPoint Capital Management, LP $1,772,721 0.11% 149,219
Small Cardinal Point Capital Management ULC $1,749,007 0.11% 92,150
Mid XTX Topco Ltd $1,741,501 0.11% 146,591
Mega DEUTSCHE BANK AG\ Bank $1,658,969 0.11% 139,644
Large Tidal Investments LLC $1,589,116 0.10% 133,764
Mid Brevan Howard Capital Management LP $1,582,950 0.10% 133,245
Key facts CIK 1595974 CUSIP 55955D100 13F (30d) 21 filings 21 filers Visit website Investor relations

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