The crypto strategist who accurately called Bitcoin's collapse earlier this year says rallies are in sight for both BTC and Ethereum (ETH). A short squeeze happens when traders who borrow units of an asset at a certain price in hopes of selling them for a lower price to pocket the difference are forced to buy assets back as the trade moves against their bias. Data from market analytics firm Coinglass show that traders have accumulated $3.63 billion worth of short positions in the last 24 hours at time of writing.