Magnite Ownership | Who Owns Magnite?
Magnite Ownership Summary
Magnite is owned by 91.93% institutional investors, 1.34% insiders, and 6.73% retail investors. Vanguard group is the largest institutional shareholder, holding 10.35% of MGNI shares. Lord Abbett Floating Rate I is the top mutual fund, with 6.55% of its assets in Magnite shares.
MGNI Ownership Benchmark
| Type | Name | % Inst | % Insiders | % Retail |
|---|---|---|---|---|
| Stock | Magnite | 91.93% | 1.34% | 6.73% |
| Sector | Communication Services Stocks | 28.76% | 18.16% | 53.08% |
| Industry | Advertising Stocks | 27.72% | 17.00% | 55.28% |
Institutional Shareholders
Top Institutional Shareholders by Total Shares
| Holder | Shares | % Holding | Value |
|---|---|---|---|
| Vanguard group | 14.80M | 10.35% | $240.25M |
| Blackrock funding, inc. /de | 11.66M | 8.18% | $138.49M |
| Blackrock | 9.70M | 6.96% | $128.91M |
| Wellington management group llp | 9.19M | 6.45% | $109.19M |
| Capital research global investors | 5.02M | 3.52% | $59.64M |
| Boston partners | 4.72M | 3.31% | $56.08M |
| American century companies | 4.63M | 3.25% | $54.97M |
| Fmr | 4.51M | 3.16% | $53.55M |
| Dimensional fund advisors lp | 3.98M | 2.79% | $47.32M |
| Nuveen asset management | 3.94M | 2.79% | $62.77M |
Top Institutional Shareholders by % of Total Assets
| Holder | Shares | % Assets | Value |
|---|---|---|---|
| Nine ten capital management | 3.48M | 13.14% | $41.36M |
| Grizzlyrock capital | 1.24M | 11.65% | $14.72M |
| Edenbrook capital | 2.80M | 10.35% | $33.24M |
| Roumell asset management | 387.77K | 9.67% | $5.15M |
| 325 capital | 2.01M | 8.68% | $23.82M |
| Kopion asset management | 855.90K | 7.91% | $10.17M |
| Maestria partners | 1.36M | 5.91% | $16.20M |
| P.a.w. capital | 170.00K | 5.50% | $2.02M |
| Norwood investment partners, lp | 285.00K | 5.21% | $3.39M |
| Meros investment management, lp | 992.35K | 5.11% | $11.79M |
Top Buyers
| Holder | Shares | % Assets | Change |
|---|---|---|---|
| Jane street group | 1.67M | 0.00% | 1.29M |
| Millennium management | 1.23M | 0.01% | 1.21M |
| Victory capital management | 1.27M | 0.01% | 1.12M |
| Vanguard fiduciary trust | 997.08K | 0.00% | 997.08K |
| T. rowe price investment management | 890.92K | 0.01% | 890.92K |
Top Sellers
| Holder | Shares | % Assets | Change |
|---|---|---|---|
| Capital research global investors | 5.02M | 0.01% | -7.90M |
| Burgundy asset management | - | - | -2.46M |
| Fmr | 4.51M | 0.00% | -2.19M |
| Driehaus capital management | 1.52M | 0.24% | -1.27M |
| Stephens investment management group | - | - | -1.13M |
New Positions
| Holder | Shares | % Assets | Change | Value |
|---|---|---|---|---|
| Vanguard fiduciary trust | 997.08K | 0.00% | 997.08K | $11.85M |
| T. rowe price investment management | 890.92K | 0.01% | 890.92K | $19.41M |
| Park west asset management | 598.38K | 0.60% | 598.38K | $7.11M |
| Capital world investors | 456.67K | 0.00% | 456.67K | $5.43M |
| Norges bank | 398.64K | 0.00% | 398.64K | $6.35M |
Sold Out
| Holder | Change |
|---|---|
| Tfc financial management | -1.00 |
| Innealta capital | -4.00 |
| Hfm investment advisors | -4.00 |
| Toronto dominion bank | -7.00 |
| Wealthspire advisors | -8.00 |
Institutional Ownership Trends
| Date | Holdings | Change % | Shares | Change % | Ownership | Change % | Increased Position | Change % | Decreased Position | Change % |
|---|---|---|---|---|---|---|---|---|---|---|
| Mar 31, 2026 | 309 | -6.65% | 131,062,018 | -4.12% | 91 | 1.01% | 160 | -12.09% | 82 | -9.89% |
| Dec 31, 2025 | 238 | -31.81% | 91,409,658 | -33.77% | 63 | 0.67% | 128 | -16.34% | 68 | -46.46% |
| Sep 30, 2025 | 259 | -17.25% | 120,992,241 | -17.67% | 85 | 0.79% | 107 | -31.85% | 110 | 12.24% |
| Jun 30, 2025 | 311 | -0.64% | 146,863,904 | 11.40% | 103 | 1.20% | 158 | 0.64% | 97 | - |
| Mar 31, 2025 | 312 | 0.97% | 132,582,786 | 7.47% | 93 | 1.23% | 156 | 4.00% | 96 | 2.13% |
Top Mutual Funds Shareholders
| Holder | Shares | % Holding | Change |
|---|---|---|---|
| Lord Abbett Floating Rate I | 9.38M | 6.55% | 9.38M |
| American Funds SMALLCAP World A | 4.90M | 3.39% | -6.60M |
| Vanguard Total Stock Mkt Idx Inv | 4.35M | 3.01% | -161.03K |
| Vanguard US Total Market Shares ETF | 4.16M | 2.91% | 4.24K |
| iShares Russell 2000 ETF | 3.35M | 2.34% | 28.25K |
| Vanguard Small Cap Index | 3.16M | 2.19% | -100.26K |
| American Century U.S. Small Cap Growth | 2.91M | 2.01% | -93.32K |
| American Century Small Cap Growth Inv | 2.91M | 2.01% | -93.32K |
| Strategic Advisers Fidelity US TtlStk | 2.85M | 2.00% | 391.61K |
| Fidelity Advisor Growth Opps M | 2.18M | 1.55% | -703.50K |
Recent Insider Transactions
| Date | Name | Role | Activity | Value |
|---|---|---|---|---|
| Feb 18, 2026 | Soroca Adam Lee | CHIEF PRODUCT OFFICER | Sell | $258.35K |
| Dec 17, 2025 | Soroca Adam Lee | CHIEF PRODUCT OFFICER | Sell | $283.15K |
| Nov 24, 2025 | Buckley Sean Patrick | President, Revenue | Sell | $32.09K |
| Nov 21, 2025 | Spillane Robert F | - | Sell | $177.75K |
| Nov 18, 2025 | Buckley Sean Patrick | President, Revenue | Sell | $59.13K |
Insider Transactions Trends
| Date | Buy | Sell |
|---|---|---|
| 2026 Q1 | - | 1 |
| 2025 Q4 | - | 6 |
| 2025 Q3 | - | 32 |
| 2025 Q2 | - | 27 |
| 2025 Q1 | - | 11 |
MGNI Ownership FAQ
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