The upcoming six-month period has historically been such a bad stretch for the stock market that Wall Street has an adage for it: “Sell in May and go away.”

The maxim may not hold up this year, as a stock market at all-time highs exhibits signs of further momentum.

The upcoming six-month period has historically been such a bad stretch for the stock market that Wall Street has an adage for it: “Sell in May and go away.”

Should investors 'sell in May' or flip a coin?