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.
13F holders, Q1 2026
Institutional positions in Magnite, Inc. as of Mar 31, 2026. Investment managers with $100 million or more in US stocks report their long positions on Form 13F within 45 days after each quarter ends. How 13F works
- Institutional holders
- 297
- −2 vs. Q4 2025
- Shares held
- 131.6M
- +9.78M (+8.0%) vs. Q4 2025
- Total value
- $1.56B
- −$413.1M (−20.9%) vs. Q4 2025
- New holders
- 52
- 114 more added
- Sold out
- 54
- 80 more reduced
5 institutions that held it in Q4 2025 haven't filed for Q1 2026 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q4 2025: new holders, sold out and not filed yet
Holders and value by quarter
Institutions reporting MGNI on Form 13F each quarter since Q1 2021, and the total value they reported. Values are as of each quarter end, so they also move with the share price.
| Quarter | Holders | Value |
|---|---|---|
| Q2 2026 | 311 | $2.69B |
| Q1 2026 | 297 | $1.56B |
| Q4 2025 | 304 | $2.22B |
| Q3 2025 | 316 | $3.00B |
| Q2 2025 | 287 | $3.54B |
| Q1 2025 | 293 | $1.52B |
| Q4 2024 | 286 | $1.97B |
| Q3 2024 | 280 | $1.65B |
| Q2 2024 | 269 | $1.39B |
| Q1 2024 | 232 | $1.10B |
| Q4 2023 | 217 | $959.0M |
| Q3 2023 | 215 | $780.6M |
| Q2 2023 | 224 | $1.39B |
| Q1 2023 | 224 | $892.4M |
| Q4 2022 | 231 | $988.1M |
| Q3 2022 | 218 | $679.0M |
| Q2 2022 | 231 | $781.6M |
| Q1 2022 | 231 | $1.17B |
| Q4 2021 | 248 | $1.57B |
| Q3 2021 | 279 | $2.52B |
| Q2 2021 | 268 | $2.89B |
| Q1 2021 | 280 | $3.59B |
Institutions, Q1 2026
Shares, value and share of portfolio for each institution holding Magnite, Inc.; share changes are against Q4 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| HCR Wealth Advisors | 13,000 | $154.4K | 0.02% | 00.0% | Unchanged |
| Parallax Volatility Advisers, L.P. | 13,133 | $156.0K | 0.01% | −41,525−76.0% | Reduced |
| Cetera Investment Advisers | 13,157 | $156.3K | 0.00% | −21,140−61.6% | Reduced |
| Bayforest Capital Ltd | 13,225 | $157.1K | 0.18% | +6,810+106.2% | Added |
| Gsa Capital Partners LLP | 13,347 | $159.0K | 0.01% | −3,176−19.2% | Reduced |
| Xponance, Inc. | 13,486 | $160.2K | 0.00% | +2,390+21.5% | Added |
| Ensign Peak Advisors, Inc | 13,658 | $162.3K | 0.00% | 00.0% | Unchanged |
| Woodmont Investment Counsel LLC | 14,250 | $169.3K | 0.01% | 00.0% | Unchanged |
| GWN Securities Inc. | 14,321 | $170.1K | 0.03% | +14,321 | New |
| Caitong International Asset Management Co., Ltd | 14,350 | $170.5K | 0.03% | +14,350 | New |
| Winthrop Advisory Group LLC | 14,520 | $172.5K | 0.01% | 00.0% | Unchanged |
| Public Employees Retirement Association of Colorado | 14,986 | $178.0K | 0.00% | 00.0% | Unchanged |
| Cambridge Investment Research Advisors, Inc. | 15,022 | $178.0K | 0.00% | +966+6.9% | Added |
| Great West Life Assurance Co | 15,140 | $181.0K | 0.00% | 00.0% | Unchanged |
| Citigroup Inc | 15,860 | $188.4K | 0.00% | −35,564−69.2% | Reduced |
| Centiva Capital, LP | 17,000 | $202.0K | 0.01% | 00.0% | Unchanged |
| Avenir Corp | 17,715 | $210.5K | 0.03% | +17,715 | New |
| Prelude Capital Management, LLC | 17,889 | $212.5K | 0.02% | −134,311−88.2% | Reduced |
| Mercer Global Advisors Inc | 18,458 | $219.3K | 0.00% | +18,458 | New |
| STRS Ohio | 18,500 | $219.8K | 0.00% | −16,700−47.4% | Reduced |
| Captrust Financial Advisors | 18,658 | $221.7K | 0.00% | +3,329+21.7% | Added |
| Virtu Financial LLC | 20,044 | $238.0K | 0.01% | +20,044 | New |
| ProShare Advisors LLC | 20,628 | $245.1K | 0.00% | −4,955−19.4% | Reduced |
| Verdence Capital Advisors LLC | 20,891 | $248.2K | 0.01% | +3,898+22.9% | Added |
| Mirabella Financial Services LLP | 21,285 | $252.9K | 0.02% | +21,285 | New |
| Dynamic Technology Lab Private Ltd | 22,162 | $263.3K | 0.04% | +22,162 | New |
| Prudential Financial Inc | 22,452 | $266.7K | 0.00% | +22,452 | New |
| Pinnacle Wealth Management Advisory Group, LLC | 22,577 | $268.2K | 0.02% | −1,866−7.6% | Reduced |
| Amundi | 22,817 | $271.1K | 0.00% | +9,764+74.8% | Added |
| Mount Yale Investment Advisors, LLC | 23,648 | $280.9K | 0.01% | +23,648 | New |
| Universal- Beteiligungs- und Servicegesellschaft mbH | 23,695 | $281.5K | 0.00% | −106,092−81.7% | Reduced |
| Entropy Technologies, LP | 24,761 | $294.2K | 0.01% | +24,761 | New |
| Group One Trading, L.P. | 24,999 | $297.0K | 0.01% | +19,652+367.5% | Added |
| Pictet Asset Management Holding SA | 25,755 | $306.0K | 0.00% | +3,114+13.8% | Added |
| Linden Thomas Advisory Services, LLC | 26,421 | $313.9K | 0.03% | +26,421 | New |
| IMC-Chicago, LLC | 27,774 | $330.0K | 0.00% | −105,322−79.1% | Reduced |
| Northwest & Ethical Investments L.P. | 28,181 | $342.7K | 0.01% | +10,542+59.8% | Added |
| Ronald Blue Trust, Inc. | 29,073 | $345.4K | 0.00% | +1,599+5.8% | Added |
| State of Alaska, Department of Revenue | 30,334 | $360.0K | 0.00% | 00.0% | Unchanged |
| Fulton Bank, N.A. | 30,740 | $365.2K | 0.01% | −655−2.1% | Reduced |
| Buckland Partners Management Co LLC | 31,446 | $373.6K | 0.23% | 00.0% | Unchanged |
| BNP Paribas Arbitrage, SA | 31,464 | $373.8K | 0.00% | −168−0.5% | Reduced |
| Brown Advisory Inc | 31,524 | $374.5K | 0.00% | +10,261+48.3% | Added |
| KLP Kapitalforvaltning AS | 32,400 | $384.9K | 0.00% | +1,900+6.2% | Added |
| Handelsbanken Fonder AB | 34,300 | $407.0K | 0.00% | 00.0% | Unchanged |
| Jackson Creek Investment Advisors LLC | 34,671 | $412.0K | 0.12% | +34,671 | New |
| Diametric Capital, LP | 34,783 | $413.2K | 0.11% | −14,921−30.0% | Reduced |
| Vanguard Investments Australia, Ltd. | 35,321 | $419.6K | 0.00% | +35,321 | New |
| Los Angeles Capital Management LLC | 35,325 | $419.7K | 0.00% | −4,759−11.9% | Reduced |
| New York State Common Retirement Fund | 36,725 | $436.3K | 0.00% | −437,732−92.3% | Reduced |
| Greenwood Capital Associates LLC | 36,804 | $437.2K | 0.05% | −1,816−4.7% | Reduced |
| Intech Investment Management LLC | 37,399 | $444.3K | 0.00% | −28,836−43.5% | Reduced |
| State Board of Administration of Florida Retirement System | 38,231 | $454.2K | 0.00% | 00.0% | Unchanged |
| HSBC Holdings PLC | 38,399 | $459.6K | 0.00% | −14,385−27.3% | Reduced |
| Arizona State Retirement System | 39,456 | $468.7K | 0.00% | −161−0.4% | Reduced |
| Police & Firemen's Retirement System of New Jersey | 40,290 | $478.6K | 0.00% | +3,185+8.6% | Added |
| Allspring Global Investments Holdings, LLC | 41,766 | $492.4K | 0.00% | +4,304+11.5% | Added |
| Natixis | 42,100 | $500.1K | 0.00% | +42,100 | New |
| Marshall Wace, LLP | 42,468 | $504.5K | 0.00% | +13,705+47.6% | Added |
| RE Advisers Corp | 43,900 | $521.5K | 0.01% | 00.0% | Unchanged |
| Gabelli Funds LLC | 45,820 | $544.3K | 0.00% | +15,000+48.7% | Added |
| Canada Pension Plan Investment Board | 46,052 | $547.1K | 0.00% | +27,600+149.6% | Added |
| Stifel Financial Corp | 46,601 | $553.6K | 0.00% | −12,181−20.7% | Reduced |
| Russell Investments Group, Ltd. | 49,098 | $583.3K | 0.00% | −401,923−89.1% | Reduced |
| Royal Bank of Canada | 52,917 | $628.0K | 0.00% | −9,396−15.1% | Reduced |
| Moody National Bank Trust Division | 53,315 | $633.4K | 0.06% | −42,869−44.6% | Reduced |
| SG Americas Securities, LLC | 57,237 | $680.0K | 0.00% | −2,008−3.4% | Reduced |
| Vanguard Global Advisers, LLC | 57,816 | $686.9K | 0.00% | +57,816 | New |
| Jennison Associates LLC | 57,849 | $687.2K | 0.00% | +57,849 | New |
| Advisory Services Network, LLC | 58,260 | $692.1K | 0.01% | +1,733+3.1% | Added |
| Janus Henderson Group PLC | 58,423 | $693.8K | 0.00% | 00.0% | Unchanged |
| Fifth Third Bancorp | 58,823 | $698.8K | 0.00% | +58,823 | New |
| Gamco Investors, Inc. Et Al | 60,653 | $720.6K | 0.01% | +16,174+36.4% | Added |
| Vident Advisory, LLC | 63,366 | $752.8K | 0.01% | +46,643+278.9% | Added |
| Manufacturers Life Insurance Company, The | 64,558 | $766.9K | 0.00% | −1,028−1.6% | Reduced |
| Zurcher Kantonalbank (Zurich Cantonalbank) | 64,707 | $768.7K | 0.00% | +11,339+21.2% | Added |
| Pinnacle Associates Ltd | 65,756 | $781.2K | 0.01% | +14,038+27.1% | Added |
| Wells Fargo & Company | 66,102 | $785.3K | 0.00% | −127,517−65.9% | Reduced |
| Mirae Asset Global ETFs Holdings Ltd. | 66,734 | $792.8K | 0.00% | +1,731+2.7% | Added |
| Steinberganna Wealth Management | 69,024 | $820.0K | 0.39% | 00.0% | Unchanged |
| Jupiter Asset Management Ltd | 69,441 | $825.0K | 0.00% | +69,441 | New |
| Nano Cap New Millennium Growth Fund L P | 70,000 | $831.6K | 0.78% | +20,000+40.0% | Added |
| Creative Planning | 72,178 | $857.5K | 0.00% | +41,443+134.8% | Added |
| Tudor Investment Corp Et Al | 73,645 | $874.9K | 0.00% | +38,971+112.4% | Added |
| Teachers Retirement System of the State of Kentucky | 76,813 | $913.0K | 0.01% | 00.0% | Unchanged |
| MetLife Investment Management | 77,665 | $922.7K | 0.00% | −360−0.5% | Reduced |
| Ardsley Advisory Partners LP | 78,000 | $926.6K | 0.14% | +78,000 | New |
| Envestnet Asset Management Inc | 78,262 | $929.8K | 0.00% | −85,692−52.3% | Reduced |
| Z3 Capital Partners, LLC | 81,350 | $966.4K | 0.24% | −10,800−11.7% | Reduced |
| Legato Capital Management LLC | 84,790 | $1.01M | 0.09% | +84,790 | New |
| Stephens Inc | 85,537 | $1.02M | 0.01% | −1,875−2.1% | Reduced |
| Fox Run Management, L.L.C. | 88,103 | $1.02M | 0.18% | +88,103 | New |
| Cardinal Point Capital Management, ULC | 94,950 | $1.13M | 0.07% | +26,425+38.6% | Added |
| Cerity Partners LLC | 101,213 | $1.20M | 0.00% | +425+0.4% | Added |
| Holocene Advisors, LP | 101,973 | $1.21M | 0.00% | +86,411+555.3% | Added |
| Dana Investment Advisors, Inc. | 102,413 | $1.22M | 0.04% | −152,522−59.8% | Reduced |
| Franklin Resources Inc | 109,583 | $1.30M | 0.00% | +613+0.6% | Added |
| Penbrook Management LLC | 112,190 | $1.33M | 1.01% | +81,075+260.6% | Added |
| Radcliffe Capital Management, L.P. | 112,400 | $1.34M | 0.10% | +25,000+28.6% | Added |
| Perkins Capital Management Inc | 119,275 | $1.42M | 1.33% | −2,500−2.1% | Reduced |