Despite being married, Serena Williams and Alexis Ohanian maintain separate investments for their start-ups.

In 2015, at a cafe in Italy, Serena Williams and Alexis Ohanian discussed business during their first meeting.

The duo, now married with a daughter, Alexis Olympia Ohanian Jr., have established successful careers as start-up investors. However, Williams reveals that they maintain separate business interests.

Williams revealed on CNBC's "Squawk Box" that one of their first conversations was about investing, as he has been doing so for over nine years. He stated that they strive to keep their personal and professional lives separate, but there are times when they discuss business matters at home.

Williams stated that it was beneficial to have someone like Ohanian, who co-founded Reddit in 2006 and sold it to Condé Nast for $10 million 16 months later, as a resource and sounding board.

On Tuesday, Williams declared a $111 million fundraising for her new early-stage investment firm, Serena Ventures, and stated that she intends to invest in founders with diverse perspectives. As per the firm's website, Serena Ventures has invested in 61 companies since its launch in 2014, including Tonal, CoinTracker, and Impossible Foods.

Williams stated to CNBC that the venture capital industry requires a more inclusive and platform-based player.

Ohanian established his own venture capital fund, Seven Seven Six, which has invested in 39 companies, including Angel City Football Club, a Los Angeles-based National Women's Soccer League expansion team. Additionally, Ohanian has invested in Impossible Foods, separately from Williams.

Both Ohanian and Williams are optimistic about the potential of cryptocurrencies. Williams stated on CNBC that investing in cryptocurrencies is a smart move and she regrets not doing so earlier. According to her, venture capital requires thinking outside the box.

It is advised by experts to comprehend the risks before investing in cryptocurrencies, rather than blindly following the hype. Many consider cryptocurrencies to be a high-risk, speculative investment, and suggest only investing what one can afford to lose.

Ohanian revealed to CNBC Make It last year that Williams helped him achieve a better work-life balance after their marriage. He stated, "She told me, 'You work more than I do.' At first, I was flattered, but then I realized the importance of finding a balance."

Williams informed him that his statement "wasn't a compliment," as overworking does not lead to sustained greatness. Instead, people require time to recover and regroup to perform at their best for an extended period.

After that, Ohanian has been very disciplined with his time, especially when it comes to prioritizing family time.

"Unless we have resetting moments, we can't do our best," he stated.

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