"Sell in May" — does it work in crypto?
3 of the last 6 summers saw BTC fall from May to September. Average return: −6%.
So yes, the adage technically works.
But hold one more month and Uptober flips it: +14.5% avg.
The real rule isn't "sell in May" — it's "sell in September".
May 18, 2026 8K 33
