Here's an example of a seasonal trading strategy courtesy of a trading friend of mine.
April End-of-Month
If you buy the S&P 500 during the last two days in April and sell it at the close of the 3rd trading day of May, this has historically produced:
Winning Trades: 65%
Annualized Return while Invested: 47% (About six times the normal appreciation rate of the S&P 500)
Now, you may think this is just another backtested, "works-great-in-hindsight" strategy. However, some traders have known and recommended this since 1995. If you'd been doing this every year since then, the results would be
Winning Trades: 55%
Annualized Return while Invested: 58% (Even higher than 1942-1995's results for the S&P 500)
Of course, the April End-of-Month strategy doesn't always work, and I don't follow it verbatim. (I use a variation.) However, the idea is to do as many profitable things like this as possible to stack the odds in your favor.
So what happens after this period? The post-Cinco de Mayo effect:
If you owned the the S&P 500 starting on the close of May 5th (or the next trading day if the 5th falls on a weekend) since 1942, you'd have the following results:
Days Later %Winners Compounded annualized return:
1st day later 44% winners -12.9%
2nd day later 50% winners -21.0%
3rd day later 41% winners -22.4%
4rth day later 44% winners -18.8%
So buying the S&P 500 at the close on May 5th and holding four days historically gives you a -18.8% annualized return since 1942.
ST