Alphabet's Dual Seats Hide 5% Portfolio Risk

Investors tracking the S&P 500 index may be unaware of their substantial exposure to Alphabet due to the separate listing of its GOOGL and GOOG share classes. As of October 22, 2026, these combined classes represented 5.19% of the SPDR S&P 500 ETF Trust, exposing a $200,000 account to roughly $10,000 in single-company risk.

This significant exposure comes at a time when Alphabet's capital spending has dramatically increased. In the third quarter of 2026, the company's capital expenditures jumped 114% to $51 billion, resulting in negative free cash flow. This heightened spending, driven by AI infrastructure demand, means that Alphabet's financial performance, particularly concerning AI, now carries more weight for retirement savings.

In contrast, equal-weight S&P 500 funds, such as the Invesco S&P 500 Equal Weight ETF, held a much smaller combined exposure to Alphabet's share classes, around 0.19% as of July 31, 2026. This demonstrates a significantly lower concentration of risk for investors in such funds. For those invested in traditional S&P 500 funds, strategies like combining share classes and rebalancing within tax-advantaged accounts can mitigate this single-stock concentration.