Brazil's biggest Bitcoin treasury OranjeBTC has halted purchasing BTC and instead has bought back its own shares, the publicly traded company announced Thursday, just three weeks after going public.  OranjeBTC said that it would weigh its options going forward. Companies may buy back their shares as a way to increase the value of their stock by taking it off the market and reducing its supply. The move comes as the price of Bitcoin remains 13% below its all-time high of $126,080, set earlier this month, acc ...