In a rare moment of regret on ABC's Shark Tank, Kevin O'Leary watched a potential goldmine slip through his fingers.

In a memorable 2015 episode of ABC's Shark Tank, Kevin O'Leary delivered one of his most controversial rejections.

Kevin O'Leary, known as "Mr. Wonderful" on the television series "Shark Tank," wants to help millionaire Frank McCourt ...

"Shark Tank" star Kevin O'Leary explains President Donald Trump's "tariff signal" to world economic leaders on "The Story." ...

"Shark Tank" star Kevin O'Leary said he's nearing a deal to purchase TikTok's U.S. business in a move that would save it from ...

Investor and “Shark Tank” star Kevin O’Leary is willing to pay up to $20 billion for TikTok, calling it a “legacy opportunity ...

O’Leary tells On The Money he’s teaming up with billionaire Frank McCourt and has enough money to both build out their own app and buy the name and business from the Chinese — if they are ...

Shark Tank’ investor Kevin O’Leary discusses what the SCOTUS decision on TikTok means going forward and if there is still a ...

The CNN commentator reminded the "Shark Tank" investor about his ties to the president-elect in a tense on-air exchange.

Kevin O'Leary said Inauguration Day is 'the holiest day of politics' and voiced disapproval over Michelle Obama's decision ...

Lori Greiner passed on a Shark Tank pitch, but Kevin O'Leary turned it into his most profitable deal. Here’s what went down ...

Kevin O’Leary is working on deal to purchase TikTok’s U.S. business in order to save the social media app. With TikTok set to ...