Kevin O’Leary says Marty Supreme’s ending isn’t ruthless enough

Kevin O’Leary criticizes Marty Supreme’s ending for being too soft on its protagonist. The Shark Tank investor says the film’s conclusion lacks the ruthlessness the story demands. O’Leary, making his acting debut in the role, reveals his bold vision for how the movie should have concluded.

A ‘Kumbaya’ Ending Kevin O’Leary Wants Scrapped

Kevin O’Leary openly expressed his dissatisfaction with Marty Supreme’s conclusion, calling it too soft for the brutal narrative. In interviews following the film’s December 25 release, the Mr. Wonderful entrepreneur stated the ending doesn’t deliver the ruthlessness the story requires. O’Leary revealed he pushed director Josh Safdie to make his character darker and more unforgiving throughout production.

The 71-year-old investor argued that Marty Mauser, the protagonist played by Timothée Chalamet, deserved greater accountability. His specific criticism centered on the fate of the character Rachel, revealing he believed she should meet a grimmer end in the final cut.

Kevin O’Leary’s Bold Casting as a Supervillain

Director Josh Safdie personally selected O’Leary for the role of ruthless businessman Milton Rockwell because the real businessman embodies the character’s uncompromising nature. Safdie has worked with real people and non-actors before, understanding that genuine personalities create authentic performances. O’Leary’s two decades on Shark Tank provided perfect preparation for playing a merciless antagonist.

The Toronto-based entrepreneur initially received warnings from advisors about the role, with many suggesting he lacked acting experience. However, Safdie made clear the part didn’t require conventional acting skills, only the ability to embody ruthlessness naturally.

From Boardroom to Film Set: O’Leary’s Acting Debut

Detail	Information
Film Title	Marty Supreme
Release Date	December 25, 2025
O’Leary Character	Milton Rockwell
Co-Star	Timothée Chalamet
Budget	Approximately 70 million dollars

O’Leary’s film debut challenged his assumptions about creative control. Unlike the Shark Tank boardroom, film sets operate under strict directorial authority. Safdie made this clear when O’Leary attempted to assert authority on set, teaching the No. 1 investor that movie production differs fundamentally from business negotiations.

“The Shark Tank star pushed to make his character more ruthless, but his favorite moment about success and watches didn’t make the final cut.”

— Entrepreneur Magazine, Coverage of O’Leary’s Marty Supreme interviews

Why O’Leary Thinks the Film Missed Its Mark

O’Leary submitted multiple suggestions during production to intensify his character and escalate moral consequences. The investor wanted Marty to face harsher punishment for his selfish betrayals. In particular, O’Leary believed the film’s conclusion was too redemptive, lacking the dark accountability necessary to complete the protagonist’s arc properly.

Safdie considered some of O’Leary’s proposed changes but rejected others. The director maintained his original vision, ultimately keeping the hospital-based ending where Marty encounters his newborn child. O’Leary publicly stated this resolution felt like a “kumbaya” moment, suggesting it softened the story’s moral weight.

Will Kevin O’Leary Continue Acting After This Critical Critique?

Despite his public criticism of the ending, O’Leary expressed pride in his performance. The business mogul stated he enjoyed playing a real antagonist, fully embracing his own aggressive persona. Whether his first acting experience translates into future film roles remains uncertain, especially given his vocal disagreement with directorial choices.

Safdie’s gamble on casting a real personality instead of a traditional actor paid off creatively, but the experience revealed fundamental differences between O’Leary and the filmmaker. The question now becomes whether O’Leary will attempt another film role or stick exclusively to his television and investment ventures. His critique suggests he might focus on projects where his vision won’t be overruled by directors’ decisions.

Sources

• Variety – Kevin O’Leary’s criticism of Marty Supreme’s ending and character development
• The New York Times – How Kevin O’Leary made his character more ruthless in Marty Supreme
• Fortune – Shark Tank’s Kevin O’Leary learned that movie sets don’t work like boardrooms