Pivotal Advisors’ CEO says investors are over-concentrated in AI winners, with Nvidia as only part of the picture

AI investing is broadening, but many portfolios are still implicitly concentrated, according to Tiffany McGhee, CEO and Chief Investment Officer at Pivotal Advisors.

McGhee’s remarks, published in a market interview, focus on the idea that Nvidia, while central to the AI buildout, is not sufficient on its own to represent the entire AI market. She argues that the market opportunity is wider than the semiconductor headline, spanning multiple layers of the computing stack and downstream use cases.

A central point of her discussion is that “diversified” investors can still be concentrated through index exposure. She suggests that broad U.S. benchmark investing does not automatically translate into meaningful diversification within a single theme like AI, because the largest technology weights can dominate returns during periods when AI demand is strongest.

Rather than treating AI exposure as a single bet on one company, McGhee frames it as portfolio construction. Her approach emphasizes spreading exposure across different ways AI is monetized and delivered, so that performance depends less on any one hardware supplier or one segment of the buildout.

McGhee does not, in the interview material, provide a specific model portfolio, quantified target weights, or a detailed list of alternative holdings. What is presented is a framework for thinking about diversification, grounded in the view that AI remains an expanding ecosystem rather than a single winners-take-most story.

As for Nvidia itself, the interview does not revisit company financials or disclose new guidance. It instead uses Nvidia as an example of why investors may need to broaden exposure when allocating to AI, especially if their “diversification” is largely via large-cap indexes.