cuban_internal

Mark Cuban Shares His Worst Shark Tank Investment Ever


June 14, 2023 | Eul Basa

Mark Cuban Shares His Worst Shark Tank Investment Ever


Mark Cuban, the billionaire investor on ABC's "Shark Tank," doesn't always strike gold. Speaking on the "Full Send" podcast, the 64-year-old tech mogul admitted that despite investing in a total of 85 startups so far, he has yet to reap the benefits.

"I haven’t gotten out more than I have put in, but that doesn’t account for all the ongoing, operating businesses and their valuations," he explained.

According to him, the worst investment deal he ever made on the show was with the Breathometer. Charles Michael Yim, the entrepreneur behind the Breathometer, claimed that his plastic smartphone attachment could produce accurate BAC level readings, which would therefore help its users make safer decisions. Marketed as "the world's first smartphone breathalyzer," the concept impressed all five of the Sharks, who ultimately agreed on a joint investment: $1 million for a 30% stake (valuing Yim's company at 3.3. million).

Unfortunately, Yim proved difficult to work with. Cuban revealed that despite the potential of the product, Yim failed to keep his focus on the company, resulting in its own downfall.

"It was a great product; but, the guy, Charles – I’d look at his Instagram and he’d be in Bora Bora. Two weeks later, he’d been in Vegas partying, and then he’d be on Necker Island with Richard Branson."

BreathometerYouTube

"I’d text him, like "What the f— are you doing? You’re supposed to be working,'" Cuban said. Yim would simply reply that he was "networking" for the company, but over time, his habits caught up to him. Eventually, all of the money was gone.

But that's not all — in 2017, the Federal Trade Commission filed a complaint against Yim, saying he had misled customers about the Breathometer's ability to produce accurate BAC level readings. According to the FTC, Breathometer never conducted appropriate testing on the device, despite claiming that it had been tested under "government lab" standards.

Yim later responded to Cuban's comments, telling CNBC Make It that Cuban's comments were "completely off" and that he never used the company's money to party. He defended his trip to Necker Island, in particular, saying he was there to pitch the Breathometer to Richard Branson. In fact, Branson was reportedly impressed by the product, and Yim became a finalist in Branson's Extreme Tech Challenge in 2015.

"You can’t look at someone’s social media and take it for face value. That’s not how social media works," Yim said.

Today, the Breathometer is no longer available for purchase on Yim's website, and the company is reportedly soon to be acquired.

Source

 


READ MORE

Woman looking at camera, blurred background inside store

Products That Are Disappearing Because Millennials Refuse To Buy Them

Millennials have been blamed for ruining practically everything. But behind the jokes, something strange really did happen: products older generations bought without thinking are declining—some at such a rate that they very well might disappear completely.
October 1, 2026 Jesse Singer
Worried shopaholic woman after multiple purchases

The Hidden Dangers Of Retail Therapy

A stressful week becomes a cart full of impulse purchases. We call it “retail therapy” because shopping can genuinely feel good in the moment.
September 30, 2026 Sammy Tran
Worried Man Reviewing Household Bills

Financial Advice That Sounds Safe—Until You Run The Numbers In Today’s Economy

Cash feels reassuring when prices and markets are unpredictable, but too much idle money has a cost. Keep money needed for emergencies liquid, but distinguish an emergency reserve from long-term money that has no job.
September 30, 2026 Peter Kinney
1970s grocery store cereal aisle, Woman looking at camera

Cereal Brands Baby Boomers Ate In The 1970s—But Had Disappeared From Store Shelves By The 80s

The cereal aisle of the 1970s was a strange and wonderful place. But as the 1980s got underway, many of the brands we loved disappeared from store shelves. How many of these cereals do you remember? Or, even better, how many did you actually try?
September 30, 2026 Jesse Singer


Disclaimer

The information on MoneyMade.com is intended to support financial literacy and should not be considered tax or legal advice. It is not meant to serve as a forecast, research report, or investment recommendation, nor should it be taken as an offer or solicitation to buy or sell any securities or adopt any particular investment strategy. All financial, tax, and legal decisions should be made with the help of a qualified professional. We do not guarantee the accuracy, timeliness, or outcomes associated with the use of this content.





Dear reader,


It’s true what they say: money makes the world go round. In order to succeed in this life, you need to have a good grasp of key financial concepts. That’s where Moneymade comes in. Our mission is to provide you with the best financial advice and information to help you navigate this ever-changing world. Sometimes, generating wealth just requires common sense. Don’t max out your credit card if you can’t afford the interest payments. Don’t overspend on Christmas shopping. When ordering gifts on Amazon, make sure you factor in taxes and shipping costs. If you need a new car, consider a model that’s easy to repair instead of an expensive BMW or Mercedes. Sometimes you dream vacation to Hawaii or the Bahamas just isn’t in the budget, but there may be more affordable all-inclusive hotels if you know where to look.


Looking for a new home? Make sure you get a mortgage rate that works for you. That means understanding the difference between fixed and variable interest rates. Whether you’re looking to learn how to make money, save money, or invest your money, our well-researched and insightful content will set you on the path to financial success. Passionate about mortgage rates, real estate, investing, saving, or anything money-related? Looking to learn how to generate wealth? Improve your life today with Moneymade. If you have any feedback for the MoneyMade team, please reach out to [email protected]. Thanks for your help!


Warmest regards,

The Moneymade team




✕