How does this trade compare to the insider's historical selling pattern?Over the past year, Robert F Spillane completed three open-market sales, with a median trade size of 12,500 shares. This latest transaction matches that median, suggesting the sale fits the established pattern rather than marking a change in approach. What does this mean for the insider's remaining position in Magnite?Post-transaction, direct ownership stands at 53,917 shares, valued at approximately $759,151 as of the November 21, 2025 market close.
Roubaix Capital, LLC fully liquidated its stake in Magnite , selling 260,735 shares during the third quarter of 2025, according to a filing with the Securities and Exchange Commission dated November 12, 2025. The transaction value was $6,288,928, based on the average share price for the quarter. No shares of Magnite were held by the fund at quarter end. Roubaix Capital sold out of Magnite, reducing the position from 3.0% of AUM in the prior quarter to zero.
"We're often painted as the foil to The Trade Desk," Barrett said. "But I would say 99% of the stuff that Jeff [Green, TTD's CEO] does is brilliant, and we are so supportive of cleaning up the system." Of course, the fact that Magnite had quite a good third quarter helps smooth over any possible tensions that could have arisen.
Magnite is the largest independent platform that helps companies such as Netflix and Disney monetize their advertising. The company, formed following a merger between Rubicon Project and Telaria in 2020, is benefiting from the changed landscape in the entertainment industry as bandwidth increased, content owners created on-demand libraries and ad technology evolved, Edwards said. "Connected television is the growth driver of the business, and it's about 44% of revenues. And this is basically the TV on your wall, which you stream content through," he said.
Magnite said today it has filed a lawsuit against Alphabet's Google unit in Virginia and is seeking monetary damages. Direct Harm It said in the lawsuit that Google's business of open-web display advertising has hampered growth and innovation in the sector for over 10 years, and that the tech giant's strategies "directly harmed" Magnite's operations. It added that it continues to face the consequences of Google's actions.