Retail investors who piled into the Trump administration’s promised crypto paradise via Wall Street-approved funds are now learning an expensive lesson in market gravity. Bitcoin and a slew of newly minted altcoin exchange-traded funds have crashed, erasing all gains made since just before Donald Trump retook the White House and wiping out the speculative premium that had defined the era’s digital-asset boom. Most Read from Bloomberg Despite the president’s pledge to make America the world’s crypto cap ...