https://www.reuters.com/article/us-usa-stocks-tesla/teslas-bitcoin-value-dives-musk-signals-hold-with-diamond-hands-tweet-idUSKCN2D029F >(Reuters) -The market value of Tesla Inc's bitcoin holdings have fallen by half to $1.26 billion, close to the electric car maker's purchase cost, as the cryptocurrency's value plunged following a crackdown by the Chinese government.