By Stephen Culp NEW YORK (Reuters) -Wall Street stocks headed lower on Thursday and U.S. benchmark Treasury yields scaled the highest level since April in light, post-Christmas trading. The modest but broad-based sell-off pulled all three major U.

U.S. equity futures moved lower in early Thursday trading, while Treasury bond yields remained elevated in the wake of the Federal Reserve's cautious rate stance, as investors hit pause on the early Santa Claus rally.

The article examines the performance of U.S. stock markets, focusing on the Santa Claus rally phenomenon. It discusses the impact of 10-year Treasury yields, megacap stock valuations, and a notable lawsuit against the Federal Reserve over its annual stress tests.