Elon Musk’s consideration of a potential merger involving SpaceX, Tesla or artificial intelligence firm xAI has put renewed attention on a lesser-discussed piece of his empire: one of the largest corporate bitcoin holdings in the world. SpaceX and Tesla together hold nearly 20,000 bitcoin, according to public disclosures, a stash worth roughly $1.7 billion at current prices. That would make the entity the world's seventh largest BTC holder, just behind CoinDesk-owner Bullish's 24,300 BTC. While any deal ...