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Magnite, Inc.

MGNI
Exchange
Nasdaq
Industry
Services-Computer Programming, Data Processing, Etc.
SEC CIK
0001595974

In the last 90 days, Magnite, Inc. insiders filed 0 open-market purchases and 24 sales; 311 institutions reported holding it in 13F filings for Q2 2026, worth $2.69B in total; no superinvestor holds it.

Q4 2025 vs. Q3 2025

How the institutions holding Magnite, Inc. changed between Q3 2025 and Q4 2025.

All holders in Q4 2025All holders in Q3 2025

13F holders of MGNI: Q3 2025 compared with Q4 2025
MeasureQ3 2025Of which not filed for Q4 2025Q4 2025Change
Holders31613304+1
Shares138.0M280.1K136.7M−1.02M (−0.7%)
Value$3.00B$6.11M$2.22B−$779.0M (−26.0%)

13 institutions that held it in Q3 2025 haven't filed for Q4 2025 yet. Not filing isn't selling, so the changes leave them out.

New holders (56)

Institutions that held Magnite, Inc. at the end of Q4 2025 but not at the end of Q3 2025.

Institutions new to MGNI in Q4 2025
InstitutionSharesValue% of portfolio
Ophir Asset Management Pty Ltd2,384,187$38.7M4.34%
No Street GP LP1,475,000$23.9M1.61%
Balyasny Asset Management LLC873,208$14.2M0.03%
Schonfeld Strategic Advisors LLC779,681$12.7M0.06%
Pillsbury Lake Capital LLC583,644$9.47M3.86%
Man Group plc311,536$5.06M0.01%
Senvest Management, LLC224,100$3.64M0.11%
IMC-Chicago, LLC133,096$2.16M0.04%
Z3 Capital Partners, LLC92,150$1.50M0.36%
QVT Financial LP61,293$994.8K0.09%
Weiss Asset Management LP58,484$949.2K0.01%
Dba Trading, LLC55,000$892.6K0.89%
Laurion Capital Management LP50,869$825.6K0.06%
Nano Cap New Millennium Growth Fund L P50,000$811.5K0.69%
Los Angeles Capital Management LLC40,084$693.9K0.00%
Engineers Gate Manager LP41,137$667.7K0.01%
Buckland Partners Management Co LLC31,446$510.4K0.28%
State of Alaska, Department of Revenue30,334$492.0K0.01%
Sender Co & Partners, Inc.29,905$485.4K0.28%
Brinker Capital Investments, LLC29,372$476.7K0.00%
Edgestream Partners, L.P.28,194$457.6K0.01%
Freestone Grove Partners LP27,761$450.6K0.00%
Ronald Blue Trust, Inc.27,474$445.9K0.01%
Walleye Capital LLC25,557$414.8K0.00%
Antipodes Partners Ltd24,831$403.0K0.01%
Pinnacle Wealth Management Advisory Group, LLC24,443$396.7K0.03%
Centiva Capital, LP17,000$275.9K0.02%
Gsa Capital Partners LLP16,523$268.0K0.02%
Caption Management, LLC16,200$262.9K0.01%
Holocene Advisors, LP15,562$252.6K0.00%
Amundi13,053$211.8K0.00%
Florida Financial Advisors, LLC12,686$205.9K0.06%
Bayesian Capital Management, LP11,987$194.5K0.45%
Concurrent Investment Advisors, LLC11,270$182.9K0.00%
Harbour Capital Advisors, LLC11,000$176.7K0.04%
Versor Investments LP10,800$175.3K0.03%
Rachor Investment Advisory Services, LLC4,164$67.6K0.04%
AdvisorNet Financial, Inc3,500$56.8K0.00%
Central Pacific Bank - Trust Division2,500$40.6K0.00%
EFG International AG1,500$24.3K0.00%
Pinnacle Wealth Planning Services, Inc.1,476$24.0K0.00%
Torren Management, LLC541$8.78K0.00%
Lloyd Advisory Services, LLC.301$4.88K0.00%
Flagship Harbor Advisors, LLC175$2.84K0.00%
International Assets Investment Management, LLC110$1.78K0.00%
True Wealth Design, LLC66$1.07K0.00%
Westside Investment Management, Inc.45$7300.00%
Basecamp Wealth Advisors LLC41$6650.00%
Bare Financial Services, Inc34$5520.00%
Quadrant Capital Group LLC33$5360.00%
Bell Investment Advisors, Inc30$4870.00%
UMA Financial Services, Inc.20$3250.00%
Keating Financial Advisory Services, Inc.19$3080.00%
DiNuzzo Private Wealth, Inc.15$2440.00%
Atlantic Private Wealth, LLC15$2430.00%
Dunhill Financial, LLC4$680.00%

Sold out (55)

Institutions that held Magnite, Inc. at the end of Q3 2025 and filed for Q4 2025 without it.

Institutions that sold out of MGNI in Q4 2025
InstitutionShares, Q3 2025Value, Q3 2025
Driehaus Capital Management LLC1,516,296$33.0M
T. Rowe Price Investment Management, Inc.890,918$19.4M
Voloridge Investment Management, LLC375,212$8.17M
Point72 Asset Management, L.P.305,316$6.65M
Cannell Capital LLC265,152$5.78M
Alta Park Capital, LP255,698$5.57M
Dilation Capital Management LP245,900$5.36M
EAM Investors, LLC241,943$5.18M
Polar Asset Management Partners Inc.213,866$4.66M
D. E. Shaw & Co., Inc.211,433$4.61M
Castleark Management LLC193,185$4.21M
Lisanti Capital Growth, LLC189,168$4.12M
Advantage Alpha Capital Partners LP160,447$3.49M
Ameriprise Financial Inc150,495$3.28M
Campbell & CO Investment Adviser LLC132,785$2.89M
Panoramic Capital, LLC126,080$2.75M
Zweig-DiMenna Associates LLC99,900$2.18M
Clough Capital Partners L P94,652$2.06M
State of New Jersey Common Pension Fund D94,452$2.06M
Dark Forest Capital Management LP69,509$1.51M
Fox Run Management, L.L.C.63,761$1.39M
Ardsley Advisory Partners LP60,000$1.31M
Jennison Associates LLC40,431$880.6K
Virtu Financial LLC37,311$813.0K
Legato Capital Management LLC35,220$767.1K
Sierra Summit Advisors LLC34,632$754.3K
Jain Global LLC32,447$706.7K
TD Asset Management Inc30,740$669.5K
Clear Creek Financial Management, LLC30,032$654.1K
Bailard, Inc.29,079$633.3K
Moran Wealth Management, LLC25,121$547.1K
Pitcairn Co22,802$496.6K
Counterpoint Mutual Funds LLC22,156$482.6K
Teacher Retirement System of Texas18,391$400.6K
Prudential Financial Inc18,114$394.5K
Numerai GP LLC16,327$355.6K
HighTower Advisors, LLC14,780$321.9K
O'Shaughnessy Asset Management, LLC10,677$232.5K
Benjamin Edwards Inc10,155$221.2K
Intrust Bank NA10,002$217.8K
National Wealth Management Group, LLC9,221$200.8K
Quantbot Technologies LP4,047$88.1K
Johnson Financial Group, Inc.3,818$83.2K
Westfuller Advisors, LLC2,570$56.0K
USA Financial Portformulas Corp1,835$40.0K
Aster Capital Management (DIFC) Ltd1,594$34.7K
Banque Cantonale Vaudoise1,369$30.0K
Neo Ivy Capital Management1,234$26.9K
HighMark Wealth Management LLC1,000$21.8K
Quarry LP99$2.16K
Leonteq Securities AG96$2.09K
Rise Advisors, LLC22$479
Wealthspire Advisors, LLC8$174
Caitong International Asset Management Co., Ltd7$152
Cloud Capital Management, LLC6$0

Not filed for Q4 2025 yet (13)

Institutions that held Magnite, Inc. at the end of Q3 2025 and haven't filed a 13F for Q4 2025. Not filing isn't selling, so they aren't counted as sold out.

Institutions holding MGNI in Q3 2025 that haven't filed for Q4 2025
InstitutionShares, Q3 2025Value, Q3 2025
EFG Asset Management (North America) Corp.150,511$3.28M
Cubist Systematic Strategies, LLC71,251$1.55M
CIBC Bancorp USA Inc.14,929$325.2K
Point72 (DIFC) Ltd11,770$256.3K
Wolverine Trading, LLC10,259$228.6K
1858 Wealth Management, LLC9,212$200.6K
Shell Asset Management Co4,609$100.0K
Point72 Hong Kong Ltd3,639$79.3K
AllSquare Wealth Management LLC2,540$55.3K
Point72 Asia (Singapore) Pte. Ltd.1,210$26.4K
Pineridge Advisors LLC137$2.98K
Hemington Wealth Management67$1.00K
Abich Financial Wealth Management LLC9$196