MGNINasdaq

MAGNITE, INC.

Alert me on MGNI

Insider buys, 6 months

Congress trades, 6 months

Signals, 6 months

Six months

After each filing

Oct 15 Sale Caine Paul Insider

1 week

−5.5%S&P −1.0%

1 month

Result in15 trading days

3 months

Result in57 trading days

6 months

Result in120 trading days

Sep 19 Sale Knopper Douglas S Insider

1 week

−7.5%S&P −1.0%

1 month

−5.9%S&P −0.6%

3 months

Result in39 trading days

6 months

Result in102 trading days

Sep 19 Sale Caine Paul Insider

1 week

−7.5%S&P −1.0%

1 month

−5.9%S&P −0.6%

3 months

Result in39 trading days

6 months

Result in102 trading days

Sep 17 Sale Buonasera David Insider

1 week

−6.1%S&P +0.9%

1 month

−8.8%S&P +0.3%

3 months

Result in37 trading days

6 months

Result in100 trading days

Sep 17 Sale Spillane Robert F Insider

1 week

−6.1%S&P +0.9%

1 month

−8.8%S&P +0.3%

3 months

Result in37 trading days

6 months

Result in100 trading days

Show all 50

Sep 12 Sale Saltz Aaron Insider

1 week

+6.2%S&P +1.9%

1 month

+6.2%S&P +2.5%

3 months

Result in34 trading days

6 months

Result in97 trading days

Sep 12 Sale Caine Paul Insider

1 week

+6.2%S&P +1.9%

1 month

+6.2%S&P +2.5%

3 months

Result in34 trading days

6 months

Result in97 trading days

Sep 12 Sale Evans Katie Seitz Insider

1 week

+6.2%S&P +1.9%

1 month

+6.2%S&P +2.5%

3 months

Result in34 trading days

6 months

Result in97 trading days

Sep 11 Sale Evans Katie Seitz Insider

1 week

+5.8%S&P −0.1%

1 month

+5.5%S&P +2.1%

3 months

Result in33 trading days

6 months

Result in96 trading days

Sep 4 Sale Buonasera David Insider

1 week

−1.2%S&P −1.2%

1 month

+2.9%S&P +1.4%

3 months

Result in29 trading days

6 months

Result in92 trading days

Aug 29 Sale Harden Sarah Patricia Insider

1 week

+0.9%S&P −0.1%

1 month

+7.5%S&P −0.3%

3 months

Result in25 trading days

6 months

Result in88 trading days

Aug 19 Sale Buckley Sean Patrick Insider

1 week

−2.0%S&P −0.4%

1 month

+5.5%S&P −0.7%

3 months

Result in17 trading days

6 months

Result in80 trading days

Aug 19 Sale Caine Paul Insider

1 week

−2.0%S&P −0.4%

1 month

+5.5%S&P −0.7%

3 months

Result in17 trading days

6 months

Result in80 trading days

Aug 13 Sale Lam Rachel Insider

1 week

−5.0%S&P −2.0%

1 month

−3.0%S&P −2.2%

3 months

Result in13 trading days

6 months

Result in76 trading days

Aug 13 Sale Caine Paul Insider

1 week

−5.0%S&P −2.0%

1 month

−3.0%S&P −2.2%

3 months

Result in13 trading days

6 months

Result in76 trading days

Aug 13 Sale Gephart Brian Insider

1 week

−5.0%S&P −2.0%

1 month

−3.0%S&P −2.2%

3 months

Result in13 trading days

6 months

Result in76 trading days

Aug 8 Sale Buonasera David Insider

1 week

−0.1%S&P 0.0%

1 month

−2.6%S&P −1.4%

3 months

Result in10 trading days

6 months

Result in73 trading days

Aug 8 Sale Buckley Sean Patrick Insider

1 week

−0.1%S&P 0.0%

1 month

−2.6%S&P −1.4%

3 months

Result in10 trading days

6 months

Result in73 trading days

Aug 8 Sale Knopper Douglas S Insider

1 week

−0.1%S&P 0.0%

1 month

−2.6%S&P −1.4%

3 months

Result in10 trading days

6 months

Result in73 trading days

Aug 8 Sale BARRETT MICHAEL G. Insider

1 week

−0.1%S&P 0.0%

1 month

−2.6%S&P −1.4%

3 months

Result in10 trading days

6 months

Result in73 trading days

Aug 8 Sale Evans Katie Seitz Insider

1 week

−0.1%S&P 0.0%

1 month

−2.6%S&P −1.4%

3 months

Result in10 trading days

6 months

Result in73 trading days

Jul 18 Sale BARRETT MICHAEL G. Insider

1 week

+0.6%S&P −0.4%

1 month

+29.3%S&P +3.4%

3 months

+23.2%S&P +3.1%

6 months

Result in58 trading days

Jul 15 Sale Caine Paul Insider

1 week

−10.7%S&P −1.0%

1 month

+20.0%S&P +3.1%

3 months

+23.6%S&P +3.3%

6 months

Result in55 trading days

Jul 10 Sale Buonasera David Insider

1 week

−6.6%S&P −1.5%

1 month

+19.0%S&P +2.4%

3 months

+25.1%S&P +2.8%

6 months

Result in52 trading days

Jul 10 Sale Buckley Sean Patrick Insider

1 week

−6.6%S&P −1.5%

1 month

+19.0%S&P +2.4%

3 months

+25.1%S&P +2.8%

6 months

Result in52 trading days

Jul 3 Sale Buonasera David Insider

1 week

−2.1%S&P −0.3%

1 month

+0.1%S&P +2.7%

3 months

+18.7%S&P +2.7%

6 months

Result in48 trading days

Jul 2 Sale BARRETT MICHAEL G. Insider

1 week

−0.2%S&P +1.4%

1 month

−4.0%S&P +1.7%

3 months

+24.8%S&P +2.8%

6 months

Result in47 trading days

Jun 19 Sale Buckley Sean Patrick Insider

1 week

+9.5%S&P −0.5%

1 month

+4.9%S&P +0.4%

3 months

+45.0%S&P +4.2%

6 months

Result in39 trading days

Jun 18 Sale BARRETT MICHAEL G. Insider

1 week

+4.7%S&P −2.4%

1 month

+6.9%S&P +0.2%

3 months

+40.6%S&P +2.3%

6 months

Result in38 trading days

Jun 18 Sale Buonasera David Insider

1 week

+4.7%S&P −2.4%

1 month

+6.9%S&P +0.2%

3 months

+40.6%S&P +2.3%

6 months

Result in38 trading days

Jun 18 Sale Knopper Douglas S Insider

1 week

+4.7%S&P −2.4%

1 month

+6.9%S&P +0.2%

3 months

+40.6%S&P +2.3%

6 months

Result in38 trading days

Jun 11 Sale Knopper Douglas S Insider

1 week

+10.4%S&P +1.5%

1 month

+24.7%S&P +2.2%

3 months

+46.7%S&P +3.9%

6 months

Result in33 trading days

Jun 11 Sale PEARSON DAVID T. Insider

1 week

+10.4%S&P +1.5%

1 month

+24.7%S&P +2.2%

3 months

+46.7%S&P +3.9%

6 months

Result in33 trading days

Jun 4 Sale Buonasera David Insider

1 week

+9.0%S&P −2.6%

1 month

+38.1%S&P −1.0%

3 months

+65.7%S&P +2.4%

6 months

Result in28 trading days

May 22 Sale Spillane Robert F Insider

1 week

+16.5%S&P +1.7%

1 month

+38.6%S&P −1.4%

3 months

+78.5%S&P +2.7%

6 months

Result in20 trading days

Feb 19 Sale Soroca Adam Lee Insider

1 week

+10.4%S&P +0.7%

1 month

+1.4%S&P −5.0%

3 months

+6.9%S&P +8.6%

6 months

+91.2%S&P +12.0%

Dec 20, 2025 Sale Soroca Adam Lee Insider

1 week

+0.1%S&P +0.3%

1 month

−6.3%S&P +0.6%

3 months

−26.3%S&P −3.8%

6 months

+5.4%S&P +7.8%

Nov 27, 2025 Sale Buckley Sean Patrick Insider

1 week

−0.3%S&P +0.3%

1 month

+12.0%S&P +0.8%

3 months

−6.3%S&P −0.2%

6 months

+1.1%S&P +11.8%

Nov 22, 2025 Sale Spillane Robert F Insider

1 week

−2.3%S&P +1.9%

1 month

+12.1%S&P +3.5%

3 months

−8.5%S&P +3.4%

6 months

−2.1%S&P +13.5%

Nov 19, 2025 Sale Soroca Adam Lee Insider

1 week

+8.5%S&P +2.6%

1 month

+21.2%S&P +3.0%

3 months

−16.3%S&P +3.3%

6 months

−2.4%S&P +13.2%

Nov 19, 2025 Sale Buckley Sean Patrick Insider

1 week

+8.5%S&P +2.6%

1 month

+21.2%S&P +3.0%

3 months

−16.3%S&P +3.3%

6 months

−2.4%S&P +13.2%

Oct 29, 2025 Sale Caine Paul Insider

1 week

−8.3%S&P −1.4%

1 month

−21.2%S&P −0.6%

3 months

−22.4%S&P +1.0%

6 months

−26.4%S&P +5.4%

Sep 20, 2025 Sale Caine Paul Insider

1 week

−7.8%S&P −0.5%

1 month

−21.6%S&P +0.7%

3 months

−32.1%S&P +2.4%

6 months

−50.2%S&P −1.5%

Sep 20, 2025 Sale Saltz Aaron Insider

1 week

−7.8%S&P −0.5%

1 month

−21.6%S&P +0.7%

3 months

−32.1%S&P +2.4%

6 months

−50.2%S&P −1.5%

Sep 18, 2025 Sale Saltz Aaron Insider

1 week

−6.1%S&P −0.4%

1 month

−25.1%S&P +0.6%

3 months

−30.1%S&P +1.7%

6 months

−48.2%S&P −1.2%

Sep 13, 2025 Sale Caine Paul Insider

1 week

+1.8%S&P +1.2%

1 month

−24.3%S&P +0.5%

3 months

−31.3%S&P +3.4%

6 months

−48.0%S&P +2.1%

Sep 11, 2025 Sale Buckley Sean Patrick Insider

1 week

−1.1%S&P +0.7%

1 month

−27.5%S&P −0.4%

3 months

−34.6%S&P +4.8%

6 months

−50.8%S&P +1.3%

Sep 6, 2025 Sale Gephart Brian Insider

1 week

−6.4%S&P +1.9%

1 month

−24.7%S&P +3.4%

3 months

−42.2%S&P +6.0%

6 months

−48.7%S&P +5.0%

Sep 5, 2025 Sale Soroca Adam Lee Insider

1 week

−3.9%S&P +1.6%

1 month

−22.5%S&P +4.1%

3 months

−42.1%S&P +6.0%

6 months

−45.6%S&P +5.4%

Sep 5, 2025 Sale Buonasera David Insider

1 week

−3.9%S&P +1.6%

1 month

−22.5%S&P +4.1%

3 months

−42.1%S&P +6.0%

6 months

−45.6%S&P +5.4%

Every purchase and sale on this ticker reported by a member of Congress or an insider, measured from the close of the first trading day after it became public to the close 1 week, 1 month, 3 months and 6 months later, each beside the S&P over the same days.

Filings for MGNI

176 held · newest 5176 held · newest 2

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See all 176 filings for MGNI

Aeon news and offers by email

New sources, new features and offers like our founding price. A few times a month at most. Stop any time.

Signal history

No signal for this ticker yet. A signal is written when insider buying here scores one dot or more.

Stakes

Jun 30, 2026 Schedule 13G, amended

Wellington Management Group LLP: 4.2%, 6,044,492 shares

Jun 30, 2026 Schedule 13G

FMR LLC: 5.4%, 7,759,426 shares

Mar 31, 2026 Schedule 13G, amended

Capital Research Global Investors: 3.5%, 5,020,289 shares

Mar 31, 2026 Schedule 13G, amended

FMR LLC: 3.1%, 4,507,419 shares

Mar 31, 2026 Schedule 13G

Vanguard Capital Management: 5%, 7,283,329 shares

Mar 31, 2026 Schedule 13G

Vanguard Portfolio Management: 5.4%, 7,849,870 shares

Mar 13, 2026 Schedule 13G, amended

The Vanguard Group: 0%, 0 shares

Dec 31, 2025 Schedule 13G

Capital Research Global Investors: 9%, 12,920,289 shares

Dec 31, 2025 Schedule 13G

Wellington Management Group LLP: 6%, 8,629,238 shares

Nov 28, 2025 Schedule 13G, amended

FMR LLC: 5.7%, 8,124,920 shares

Sep 30, 2025 Schedule 13G, amended

Capital Research Global Investors: 4.9%, 6,982,861 shares

Sep 30, 2025 Schedule 13G, amended

The Vanguard Group: 10.3%, 14,654,432 shares

Schedule 13D is filed within 5 business days of crossing 5 percent by an investor who may seek to influence the company. Schedule 13G is filed by a passive holder, and a large institution has up to 45 days after the quarter end.

Government contracts, last 12 months

Awards of $10M and up, from USAspending · context, not a signal

No contracts of $10M or more in the last 12 months.

Lobbying

Last four quarters

No lobbying reports on file.