| Filer | Ownership | Change % | Holdings Value | Net Change | Nb Shares | Change % | Reporting Name | Report Period |
|---|---|---|---|---|---|---|---|---|
| VANGUARD GROUP INC | 10% | $307,011,816 | 14,654,432 | The Vanguard Group | 30 Sep 2025 | |||
| FMR LLC | 5.7% | -54% | $115,617,607 | -$129,484,064 | 8,124,920 | -53% | FMR LLC | 28 Nov 2025 |
| Capital Research Global Investors | 4.9% | -46% | $152,086,713 | -$129,312,412 | 6,982,861 | -46% | Capital Research Global Investors | 30 Sep 2025 |
As of 30 Sep 2025, 311 institutional investors reported holding 138,012,582 shares of MAGNITE, INC. - COMMON STOCK (MGNI). This represents 97% of the company’s total 142,542,451 outstanding shares.
The largest institutional shareholders of MAGNITE, INC. - COMMON STOCK (MGNI) together control 73% of the company’s outstanding shares — a level of ownership often associated with strong institutional conviction and long‑term capital commitment.
| Institution | Ownership % | Shares Held | Share Change % | Portfolio % | Holdings Value |
|---|---|---|---|---|---|
| FMR LLC | 12% | 17,141,014 | -0.26% | 0.02% | $373,331,284 |
| VANGUARD GROUP INC | 10% | 14,654,432 | +8.1% | 0% | $319,173,529 |
| BlackRock, Inc. | 8% | 11,413,155 | +6.7% | 0% | $248,578,526 |
| Capital Research Global Investors | 4.9% | 6,982,861 | -46% | 0.03% | $152,086,713 |
| WELLINGTON MANAGEMENT GROUP LLP | 3.6% | 5,144,549 | -5.6% | 0.02% | $112,048,278 |
| AMERICAN CENTURY COMPANIES INC | 3.2% | 4,594,070 | -4.9% | 0.05% | $100,058,887 |
| Boston Partners | 3.1% | 4,449,004 | -20% | 0.1% | $95,207,440 |
| Granahan Investment Management, LLC | 2.7% | 3,873,179 | +6.3% | 3.5% | $84,357,839 |
| DIMENSIONAL FUND ADVISORS LP | 2.5% | 3,567,254 | -27% | 0.02% | $77,700,093 |
| GEODE CAPITAL MANAGEMENT, LLC | 2.4% | 3,399,093 | +5.7% | 0% | $74,042,436 |
| STATE STREET CORP | 2.2% | 3,126,790 | +2.4% | 0% | $68,101,486 |
| Nuveen, LLC | 2.2% | 3,092,036 | -4.9% | 0.02% | $67,344,545 |
| Nine Ten Capital Management LLC | 2% | 2,858,583 | 0% | 16% | $62,260,000 |
| PRICE T ROWE ASSOCIATES INC /MD/ | 1.8% | 2,547,505 | +2066% | 0.01% | $55,486,000 |
| GOLDMAN SACHS GROUP INC | 1.7% | 2,385,439 | +25% | 0.01% | $51,954,861 |
| Edenbrook Capital, LLC | 1.5% | 2,110,370 | -42% | 23% | $45,963,859 |
| MORGAN STANLEY | 1.4% | 2,046,237 | +75% | 0% | $44,567,069 |
| Blue Grotto Capital, LLC | 1.1% | 1,548,796 | +444% | 3.9% | $33,732,776 |
| Driehaus Capital Management LLC | 1.1% | 1,516,296 | -45% | 0.24% | $33,024,927 |
| NORTHERN TRUST CORP | 0.96% | 1,365,056 | +1.9% | 0% | $29,730,919 |
| NOMURA ASSET MANAGEMENT CO LTD | 0.94% | 1,339,765 | -23% | 0.08% | $29,180,081 |
| Bank of New York Mellon Corp | 0.89% | 1,261,893 | -30% | 0% | $27,484,031 |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 0.85% | 1,217,848 | +6.9% | 0% | $26,524,729 |
| KENNEDY CAPITAL MANAGEMENT LLC | 0.85% | 1,213,613 | +40% | 0.58% | $26,432,491 |
| JPMORGAN CHASE & CO | 0.85% | 1,209,413 | +29% | 0% | $26,341,015 |
| Period | Reported Shares, Excl. Options | Value, Excl. Options | Value Change | Price (Median) | Investors |
|---|---|---|---|---|---|
| 2025 Q4 | 1,819,468 | $29,637,097 | +$3,315,519 | $16.23 | 32 |
| 2025 Q3 | 138,012,582 | $3,003,858,707 | -$207,225,919 | $21.78 | 311 |
| 2025 Q2 | 146,964,373 | $3,543,069,968 | +$406,190,669 | $24.12 | 285 |
| 2025 Q1 | 132,644,716 | $1,513,349,406 | +$97,506,514 | $11.41 | 290 |
| 2024 Q4 | 123,401,912 | $1,965,151,232 | +$49,205,811 | $15.92 | 281 |
| 2024 Q3 | 119,090,833 | $1,647,598,997 | +$209,947,270 | $13.85 | 278 |
| 2024 Q2 | 104,320,994 | $1,386,388,468 | +$39,699,437 | $13.29 | 268 |
| 2024 Q1 | 101,311,331 | $1,088,969,526 | -$13,693,670 | $10.75 | 234 |
| 2023 Q4 | 380,542 | $3,554,262 | -$680,727 | $9.34 | 2 |
| 2023 Q3 | 102,478,076 | $772,715,056 | -$17,464,034 | $7.54 | 204 |
| 2023 Q2 | 98,888,781 | $1,350,553,405 | +$60,279,612 | $13.65 | 212 |
| 2023 Q1 | 95,595,145 | $885,097,946 | +$28,868,745 | $9.26 | 213 |
| 2022 Q4 | 93,302,671 | $988,076,349 | -$94,049,437 | $10.59 | 223 |
| 2022 Q3 | 103,085,703 | $677,352,639 | +$92,380,803 | $6.57 | 194 |
| 2022 Q2 | 87,157,917 | $774,047,196 | -$16,223,091 | $8.88 | 210 |
| 2022 Q1 | 88,168,164 | $1,164,851,637 | -$33,850,888 | $13.21 | 208 |
| 2021 Q4 | 85,874,182 | $1,502,558,720 | -$151,566,907 | $17.50 | 232 |
| 2021 Q3 | 89,608,651 | $2,508,584,853 | +$114,553,849 | $28.00 | 269 |
| 2021 Q2 | 85,375,728 | $2,889,374,045 | -$86,735,339 | $33.84 | 263 |
| 2021 Q1 | 85,945,936 | $3,575,159,589 | +$424,256,848 | $41.61 | 272 |
| 2020 Q4 | 76,406,566 | $2,345,824,482 | +$75,512,402 | $30.71 | 233 |
| 2020 Q3 | 82,992,407 | $576,291,330 | +$476,019,535 | $6.94 | 167 |
| 2020 Q2 | 14,428,175 | $96,233,000 | +$96,232,707 | $6.67 | 10 |
| 2020 Q1 | 203 | $7,000 | $0 | $34.48 | 1 |
| 2019 Q4 | 203 | $7,000 | $0 | $34.48 | 1 |
| 2019 Q3 | 203 | $7,000 | $0 | $34.48 | 1 |
| 2019 Q2 | 203 | $7,000 | $0 | $34.48 | 1 |
| 2019 Q1 | 203 | $7,000 | $0 | $34.48 | 1 |