• Etienne Breton has achieved seven-figure net worth by investing solely in Palantir stock.

• Breton began investing in Palantir in 2020.

• He uses options strategies to generate income and manage risk with Palantir shares.

Diversifying your portfolio is one of the most basic pieces of investing advice that financial planners emphasize, but 47-year-old Etienne Breton has generated a seven-figure net worth and potentially secured early retirement in doing the opposite: going all-in on shares of software company Palantir.

Up over 80% in 2025, Palantir is one of the hottest stocks in the market right now thanks to a combination of AI momentum, the Trump trade, and an army of bullish retail investors.

But Breton certainly isn't just chasing a recent trend. He started buying Palantir in late 2020, shortly after the company went public — and kept adding to his position even as the stock floundered through much of the early 2020s.

Now, his position has grown to 17,800 shares with another 2,000 on margin for a total investment value of almost $2.5 million, brokerage statements viewed by Business Insider show.

Palantir is the only stock Breton owns.

"I tried to identify very extraordinary companies. I didn't want to diversify," Breton said.

Two decades prior to buying Palantir, Breton had dabbled in the stock market for a short period, but sold out after the 9/11-induced stock market plunge.

His reentry into the market during the pandemic was well-timed.

"I saw someone selling all of their stocks because of the crash, so I did the exact opposite and opened an account," Breton told Business Insider.

Breton quickly landed on Palantir after learning about the company from a YouTube video. As a technical expert at a manufacturing company, Breton was drawn to the company because Palantir's offerings seemed like they could solve many of the issues he was seeing at his job, such as data silos and supply chain difficulties.

In a leap of faith, Breton went all-in.

"I sold my real estate and put almost everything I had into the stock," he said. Breton began buying around $10 a share and continued building his position aggressively as the stock fell to as low as $6 in 2020.

Breton kept a running tally of his Palantir purchases on his garage wall.

By the time the share price returned to $10, it was mid-2023, and according to Breton, he held 10,000 shares at an average price of $8.83.

In April 2023, Palantir launched its Artificial Intelligence Platform (AIP). It was the big break Breton had been waiting for. From there, the stock began to slowly rebound, eventually snowballing into the mega-cap tech giant it is today.