Tested Markets https://testedmarkets.com/ Popular investing rules, tested on long-run data from many countries. en Wed, 11 Nov 2026 00:00:00 GMT Sell in May and go away: does it still work? https://testedmarkets.com/tests/sell-in-may https://testedmarkets.com/tests/sell-in-may Wed, 11 Nov 2026 00:00:00 GMT The pattern is real in most countries, but sitting in cash all summer still earned less than buy-and-hold. We tested Sell in May on the S&P 500 since 1928 and on 41 market series in 23 countries. The pattern is real, but cash in summer earned less than buy-and-hold.