As lucrative as NBA contracts can be, the league’s top stars understand that their earning potential does not last forever. With careers typically ending in their mid-30s, players are increasingly focusing on long-term financial security. Despite having a large investment portfolio, Milwaukee Bucks star Giannis Antetokounmpo faced criticism for supporting Kalshi, a controversial prediction-market platform, earlier this year.

However, the Milwaukee superstar has continued to expand his diverse business ventures. The 31-year-old took to Instagram earlier today to announce his partnership with IM8 Health (also known as IM8). David Beckham co-founded the premium health and nutrition brand with the biotech company Prenetics, which is a NASDAQ-registered entity.

“I’ve always said, I don’t just endorse things, I invest in what I believe in,” Giannis Antetokounmpo posted on his social media platform after announcing the deal. IM8 markets itself as a science‑driven, high‑end supplement line. It’s designed to ‘replace’ multiple traditional pills with one streamlined product, targeting everyday wellness, energy, digestion, and longevity.

IM8’s main flagship product is the Daily Ultimate Essentials. It’s an all‑in‑one powdered supplement that combines roughly 90–100 clinically dosed ingredients (think vitamins, minerals, probiotics, antioxidants, and compounds like CoQ10 and MSM) into one single drink.

IM8 boasts that it can replace 16 capsules and is NSF Certified for Sport. It’s also third‑party tested for purity and label accuracy. The brand leans heavily on Beckham’s global athlete‑icon status and hopes to bank on Antetokounmpo’s star status as well. Their scientific advisory board features physicians and researchers from institutions like Mayo Clinic and Cedars‑Sinai, which adds further credibility to their approach.

Giannis Antetokounmpo’s Kalshi ventures and other investments

Exploring investments that stretch far beyond the hardwood is now commonplace in the modern-day NBA. From tech startups to real estate portfolios and brand ownership, today’s athletes are thinking like entrepreneurs. They realise that they need to use their platform and capital to build sustainable wealth for life after basketball.

Giannis is no different. But his deal with Kalshi landed him in trouble, both with NBA fans and media critics.

Just one day after the 2026 NBA trade deadline, the ‘Greek Freak’ announced that he was “joining Kalshi as a shareholder,” adding, “We all on Kalshi now.” This irked fans, considering this could be seen as a massive conflict of interest. They argued that his equity stake in a site that monetized speculation about his own future blurred the line between player and marketplace.

Reporters and critics also highlighted the NBA’s recent high‑profile gambling scandal in 2025 as a reason why the league should be extra cautious about players having economic ties to betting‑adjacent platforms. Especially considering Kalshi had already run a market on Giannis’ next team before trade deadline day. It led to $25 million in trading volume and essentially cemented Antetokounpo’s belief in the project.

That being said, Kalshi is not the only off-court business venture that the 2021 NBA Champion is involved in. One of his popular headline-grabbing investments featured the Milwaukee Brewers. Giannis purchased a minority stake in the baseball outfit in 2021.

In November 2024, the 2x NBA MVP launched Build Your Legacy (BYL) Ventures, a family-backed venture capital firm focused on sports, entertainment, media, consumer products, and technology. Giannis first ventured investing world through a partnership with Calamos Investments on a sustainable ETF platform.

His family office, Ante, has also been active in the American real estate industry. In early 2026, multiple outlets reported that Ante bought a 56-unit Chicago apartment building called Harmony Apartments for more than $21 million. CoStar also reported that Ante’s recent multifamily acquisitions totaled more than $69 million across 186 apartment units.

The European star’s investment approach looks less like passive diversification and more like brand-building around sports, media, and ownership. His public statements suggest he wants to back founders and projects with long-term growth potential, and his latest tie-up with IM8 supports that argument.