Odaily Planet Daily News: According to documents filed with the U.S. Securities and Exchange Commission (SEC) on July 31, Bitcoin miner Riot Platforms strengthened its acquisition strategy for competitor Bitfarms this month by purchasing an additional approximately 10 million shares. Riot currently holds 71.56 million of all outstanding shares of Bitfarms, worth $159.1 million, equivalent to a 15.9% stake in the Canadian miner. The acquisition was made shortly after the Ontario Capital Markets Tribunal ruled that Bitfarms' initial shareholder rights plan was invalid, which provided that if any entity acquired more than 15% of the company's shares, it would dilute the outstanding shares. However, with the cancellation of the plan, Bitfarms raised the equity dilution threshold from 15% to 20%, and Riot took the opportunity to buy more shares of its competitors. (cryptoslate)