After the S&P 500 index broke through 5500 points last week, has the bull market in the US stock market come to an end? A magical rule seems to provide bulls with a reassurance: since 1950, the annual peak of the S&P 500 index has never appeared in June. If this magical pattern can continue this year, no matter how high the S&P 500 index can ultimately rise this month, there is still a chance to further break the high record in the second half of the year.