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Magnite (MGNI) Institutional Ownership

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$23.50 +0.15 (+0.64%)
As of 08/21/2026 04:00 PM Eastern
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Institutional Ownership Changes (13F Filings) for Magnite (NASDAQ:MGNI)

Current
Institutional Ownership
Percentage
73.40%
Number of
Institutional Buyers
(last 12 months)
182
Total
Institutional Inflows
(last 12 months)
$937.63M
Number of
Institutional Sellers
(last 12 months)
101
Total
Institutional Outflows
(last 12 months)
$583.58M
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MGNI Institutional Buying and Selling by Quarter

Magnite Major Shareholders & Ownership History

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Reporting DateMajor Shareholder NameShares HeldMarket Value% of PortfolioQuarterly Change in SharesOwnership in CompanyDetails
8/22/2026 Maestria Partners LLC1,158,430$21.99M7.6%-15.0%0.808%
8/21/2026 Nykredit A S1,306$25K0.0%N/A0.001%
8/20/2026 Two Sigma Securities LLC21,097$400K0.0%+75.4%0.015%
8/20/2026 Alyeska Investment Group L.P.326,839$6.20M0.0%N/A0.228%
8/20/2026 Northwestern Mutual Wealth Management Co.15,245$289K0.0%+408.2%0.011%
8/20/2026 Greenwood Capital Associates LLC34,891$662K0.1%-5.2%0.024%
8/19/2026 UBS AM a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC364,638$6.92M0.0%+12.9%0.254%
8/19/2026 Wellington Management Group LLP6,044,492$114.72M0.0%-34.2%4.215%
8/17/2026 Corient Private Wealth LP17,309$329K0.0%N/A0.012%
8/17/2026 Parallax Volatility Advisers L.P.16,743$318K0.0%N/A0.012%
8/17/2026 Pillsbury Lake Capital LLC217,753$4.13B1.1%N/A0.152%
8/17/2026 Bank of America Corp DE1,181,832$22.43M0.0%N/A0.824%
8/15/2026 Man Group plc53,054$1.01M0.0%N/A0.037%
8/15/2026 Jupiter Topco LLC58,423$1.11M0.0%N/A0.041%
8/15/2026 Meros Investment Management LP991,335$18.82B6.0%N/A0.691%
8/14/2026 EFG International AG1,500$28K0.0%N/A0.001%
8/14/2026 Canada Pension Plan Investment Board2,995,093$56.85M0.0%N/A2.088%
8/14/2026 Manatuck Hill Partners LLC450,000$8.54M2.8%N/A0.314%
8/14/2026 Legal & General Group Plc117,006$2.22M0.0%N/A0.082%
8/14/2026 The Manufacturers Life Insurance Company 71,015$1.35M0.0%N/A0.050%
8/14/2026 S Squared Technology LLC567,862$10.78B3.3%N/A0.396%
8/14/2026 Cetera Trust Company N.A4,270$81K0.0%N/A0.003%
8/14/2026 Algert Global LLC137,505$2.61M0.0%-48.9%0.096%
8/12/2026 Elevation Point Wealth Partners LLC24,149$458K0.0%N/A0.017%
8/12/2026 Northwestern Mutual Wealth Management Co.15,245$289K0.0%N/A0.011%
8/12/2026 Norwood Investment Partners LP235,000$4.46B6.2%N/A0.164%
8/11/2026 Allworth Financial LP1,567$30K0.0%N/A0.001%
8/11/2026 Lisanti Capital Growth LLC289,030$5.49M1.2%N/A0.202%
8/10/2026 Great Lakes Advisors LLC176,615$3.35M0.0%N/A0.123%
8/7/2026 Citizens Financial Group Inc. RI82,383$1.56M0.0%N/A0.058%
8/7/2026 Buckland Partners Management Co LLC31,446$597K0.3%N/A0.022%
8/7/2026 BlackRock Inc.12,713,156$241.30M0.0%N/A8.877%
8/7/2026 Deutsche Bank AG165,040$3.13M0.0%N/A0.115%
8/7/2026 Rice Hall James & Associates LLC283,919$5.39M0.3%N/A0.198%
8/7/2026 Persistent Asset Partners Ltd5,815$110K0.0%N/A0.004%
8/6/2026 Bank of New York Mellon Corp1,162,198$22.06M0.0%N/A0.812%
8/6/2026 State of Wyoming22,273$423K0.0%N/A0.016%
7/10/2026 Handelsbanken Fonder AB47,300$898K0.0%+37.9%0.033%
7/10/2026 Fulton Bank N.A.33,041$627K0.0%+7.5%0.023%
7/7/2026 Harbor Investment Advisory LLC3,265$62K0.0%N/A0.002%
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7/7/2026 Central Pacific Bank Trust Division5,000$95K0.0%+100.0%0.003%
7/7/2026 Moody National Bank Trust Division97,202$1.85M0.2%+82.3%0.068%
7/7/2026 Kopion Asset Management LLC674,451$12.80M8.1%-21.2%0.471%
7/2/2026 Versant Capital Management Inc4,715$89K0.0%-14.7%0.003%
6/18/2026 Pacer Advisors Inc.501,578$5.96M0.0%N/A0.350%
6/2/2026 Optiver Holding B.V.5,579$66K0.0%+2,746.4%0.004%
5/19/2026 Bank of America Corp DE1,125,196$13.37M0.0%+72.6%0.786%
5/18/2026 Amundi22,817$271K0.0%+74.8%0.016%
5/18/2026California State Teachers Retirement System176,528$2.10M0.0%+29.3%0.123%
5/18/2026 Royal Bank of Canada52,917$628K0.0%-15.1%0.037%
5/16/2026 The Manufacturers Life Insurance Company64,558$767K0.0%-1.6%0.045%
5/16/2026 Quantinno Capital Management LP128,133$1.52M0.0%+144.3%0.089%
5/15/2026 Rice Hall James & Associates LLC192,808$2.29M0.1%-3.0%0.135%
5/15/2026 Granahan Investment Management LLC2,553,413$30.34M1.5%-18.1%1.783%
5/15/2026 Entropy Technologies LP24,761$294K0.0%N/A0.017%
5/14/2026 Gabelli Funds LLC45,820$544K0.0%+48.7%0.032%
5/14/2026 Gamco Investors INC. ET AL60,653$721K0.0%+36.4%0.042%
5/14/2026 Sei Investments Co.350,862$4.17M0.0%+65.9%0.245%
5/13/2026 Cetera Investment Advisers13,157$156K0.0%-61.6%0.009%
5/8/2026 PNC Financial Services Group Inc.3,783$45K0.0%+106.3%0.003%
5/7/2026 Dimensional Fund Advisors LP3,983,674$47.32M0.0%+10.2%2.782%
5/7/2026 Swiss National Bank284,300$3.38M0.0%+1.3%0.199%
5/6/2026 Jennison Associates LLC57,849$687K0.0%N/A0.040%
5/6/2026 Allspring Global Investments Holdings LLC41,766$492K0.0%+11.5%0.029%
5/5/2026 Bank of New York Mellon Corp1,138,217$13.52M0.0%-3.8%0.795%
5/4/2026 Principal Financial Group Inc.445,950$5.30M0.0%+88.0%0.311%
5/1/2026 Fifth Third Bancorp58,823$699K0.0%N/A0.041%
4/30/2026 Money Concepts Capital Corp11,659$139K0.0%N/A0.008%
4/30/2026 Greenwood Capital Associates LLC36,804$437K0.0%-4.7%0.026%
4/28/2026 Stephens Inc. AR85,537$1.02M0.0%-2.1%0.060%
4/27/2026 Elevation Point Wealth Partners LLC23,648$281K0.0%N/A0.017%
4/25/2026 Strs Ohio18,500$220K0.0%-47.4%0.013%
4/24/2026 Perkins Capital Management Inc.119,275$1.42M1.3%-2.1%0.083%
4/22/2026 1492 Capital Management LLC340,542$4.05M1.5%-0.3%0.236%
4/22/2026 Pictet Asset Management Holding SA25,755$306K0.0%+13.8%0.018%
4/21/2026 Pinnacle Wealth Management Advisory Group LLC22,577$268K0.0%-7.6%0.016%
4/21/2026 Penbrook Management LLC112,190$1.33M1.0%+260.6%0.078%
4/20/2026 Cardinal Point Capital Management ULC94,950$1.13M0.1%+38.6%0.066%
4/20/2026 Ritholtz Wealth Management10,334$123K0.0%N/A0.007%
4/20/2026 Blue Trust Inc.29,073$345K0.0%+5.8%0.020%
4/20/2026 OP Asset Management Ltd12,621$150K0.0%N/A0.009%
4/16/2026 SG Americas Securities LLC57,237$680K0.0%-3.4%0.040%
3/17/2026 Rockefeller Capital Management L.P.8,402$136K0.0%+563.7%0.006%
2/19/2026 Invesco Ltd.243,565$3.95M0.0%-5.9%0.170%
2/18/2026 Pillsbury Lake Capital LLC583,644$9.47M3.3%N/A0.406%
2/18/2026 XTX Topco Ltd46,663$757K0.0%-42.7%0.032%
2/18/2026 Wellington Management Group LLP8,629,238$140.05M0.1%+67.7%6.007%
2/18/2026 Ophir Asset Management Pty Ltd2,384,187$38.70M4.3%N/A1.660%
2/18/2026 Man Group plc311,536$5.06M0.0%N/A0.217%
2/18/2026 Engineers Gate Manager LP41,137$668K0.0%N/A0.029%
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2/18/2026 Balyasny Asset Management L.P.873,208$14.17M0.0%+6,775.7%0.608%
2/18/2026 Boothbay Fund Management LLC117,842$1.91M0.0%+100.1%0.082%
2/18/2026 Apis Capital Advisors LLC604,000$9.80M1.7%-28.0%0.420%
2/18/2026 AYAL Capital Advisors Ltd200,000$3.25M1.1%+0.5%0.139%
2/18/2026 325 Capital LLC2,005,387$32.55M11.4%+208.5%1.396%
2/17/2026 Freestone Grove Partners LP27,761$451K0.0%N/A0.019%
2/17/2026 Schonfeld Strategic Advisors LLC779,681$12.65M0.1%N/A0.543%
2/17/2026 J. Goldman & Co LP782,837$12.71M0.3%-30.8%0.545%
2/17/2026 AQR Capital Management LLC97,535$1.58M0.0%+102.9%0.068%
2/17/2026 Sender Co & Partners Inc.29,905$485K0.2%N/A0.021%


MGNI Institutional Ownership - Frequently Asked Questions

During the previous two years, 339 institutional investors and hedge funds held shares of Magnite. The most heavily invested institutionals were Meros Investment Management LP ($18.82B), S Squared Technology LLC ($10.78B), Norwood Investment Partners LP ($4.46B), Pillsbury Lake Capital LLC ($4.13B), BlackRock Inc. ($241.30M), Vanguard Group Inc. ($240.25M), and Capital Research Global Investors ($209.70M).Learn more on Magnite's institutional investors.

73.40% of Magnite's stock is owned by institutional investors. Learn more on MGNI's institutional investor holdings.

Of the 298 institutional investors that purchased Magnite's stock in the last 24 months, the following investors and hedge funds have bought the highest volume of shares: Capital Research Global Investors ($13.66M), BlackRock Inc. ($12.71M), Wellington Management Group LLP ($7.59M), American Century Companies Inc. ($4.54M), Nuveen LLC ($4.04M), Canada Pension Plan Investment Board ($3.00M), and Ophir Asset Management Pty Ltd ($2.38M).

Institutional investors have bought a total of 52,031,516 shares in the last 24 months. This purchase volume represents approximately $937.63M in transactions.

Of the 101 institutional investors that sold Magnite's stock in the last 24 months, the following investors and hedge funds have sold the highest volume of shares: Capital Research Global Investors ($5.94M), Wellington Management Group LLP ($5.87M), Wells Fargo & Company MN ($2.32M), Price T Rowe Associates Inc. MD ($1.84M), Universal Beteiligungs und Servicegesellschaft mbH ($1.51M), Boston Partners ($1.47M), and Dimensional Fund Advisors LP ($1.33M).

Institutional investors have sold a total of 30,242,843 shares in the last 24 months. This volume of shares sold represents approximately $583.58M in transactions.


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Institutional ownership data for NASDAQ:MGNI is compiled from quarterly 13F filings submitted to the U.S. Securities and Exchange Commission (SEC), with the most recent received on 8/22/2026. New 13F filings are added each quarter as they're published.
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