YouTuber Mark “Markiplier” Fischbach has become GoPro’s single largest shareholder, The Verge reports, citing Bloomberg. The reported stake is 8.5%, which Bloomberg reports is enough to make Fischbach the company’s single largest shareholder. The investment links one of YouTube’s best-known creators to a camera company that has been trying to position its hardware beyond action-sports footage. Bloomberg’s feed summary says Fischbach believes GoPro cameras can revolutionize filmmaking. The Verge, citing Bloomberg, reports that Fischbach said GoPro “seems undervalued” and framed the investment as part of a broader effort to make filmmaking more accessible. The timing matters because Fischbach has recently moved further into feature filmmaking. The Verge notes that his first feature film, Iron Lung, was released earlier this year. That context makes the stake more than a passive celebrity investment: by his own reported framing, Fischbach is tying GoPro’s hardware to his view of lower-cost production. The Verge also reports that Fischbach posted a video last week praising GoPro’s new Mission 1 ILS camera. In that video, according to The Verge, he compared the Mission 1 ILS with the more expensive Red Komodo-X and said he plans to use GoPro’s camera in future movies. There is a disclosure wrinkle around the promotional video. The Verge says the video included an affiliate code for the Mission 1 ILS, but that it did not see mention of Fischbach’s involvement in GoPro in either the caption or the video itself. Fellow YouTuber Marques Brownlee commented on Threads that this was “not a line I see crossed very often,” according to The Verge. GoPro did not immediately respond to The Verge’s request for comment. The reports provided do not describe any formal role at GoPro beyond the reported shareholding. Who benefits: GoPro may benefit from having a high-profile creator-investor publicly advocating for its camera hardware. Fischbach may benefit if his view that GoPro is undervalued proves correct, though the provided reports do not establish any financial outcome. Who's exposed: The disclosure issue centers on Fischbach’s promotional video: The Verge says it included an affiliate code but did not spot mention of his involvement in GoPro. Brownlee’s comment shows at least one peer raising concern about that line.