- Trading by calendar rules - or any other form of market timing - tends to be a loser’s game.
- The month of May has historically been flat for stocks, and this May was no exception. The S&P 500 rose just 0.47% this May. Although the Dow rose 1.93%, Nasdaq fell -1.53%, so May remained a "wash."
- Any measurement of markets over the past 70 years or more must use the Dow Jones Industrials, since the S&P 500 was not formulated until 1957, so constructing a 100-year track record for an equivalent of the S&P is problematic, and yet the Dow is a very narrow, flawed index.
For further details see:
Don't Sell In May (Or In June, Either)