The SPDR S&P Homebuilders ETF is highlighted as a way for investors to follow the moves of billionaires, who are investing in homebuilders. While one of its major holdings, PulteGroup, has underperformed the broader market over the past year, analysts are described as moderately optimistic about its prospects. The overall tone suggests the ETF is a viable option for investors seeking exposure to the homebuilding sector favored by sophisticated investors.