U.S. stocks have just accomplished something that hasn’t been done since President Richard Nixon was still occupying the White House. According to Dow Jones Market Data, the last time the large-cap index recorded a comparable stretch of weekly gains was March 10, 1972. DOW JONES MARKET DATAHowever, investors don’t need to look as far back to find a precedent for the magnitude of the index’s rise over this period. See: S&P 500 reaches 5,000 for first time. U.S. stocks have seen a powerful rally since hitting their most recent near-term bottom in late October, when the S&P 500 touched what was then its weakest level in five months.