這是chatgpt answer:
Here’s what the historical research on U.S. stock market returns by presidential party generally shows:
Market Return Trends (Proxy for QQQ)
Stocks (S&P 500) have tended to perform better on average during Democratic presidencies compared with Republican ones. Several analyses show:
-
Across many decades, average annual returns were higher under Democratic presidents (~10 %+) than under Republicans (~6–7 %).
-
Long-term studies show median annual returns are also often higher under Democrats.
