Valkyrie, one of Grayscale’s rivals, previously launched a bitcoin trust and a bitcoin-related exchange-traded-fund (ETF) in 2021. As part of their plan to sponsor GBTC, the world’s largest bitcoin fund, the Tennessee-based company also announced the launch of a new fund, the Valkyrie Opportunistic Fund, LP that seeks to take advantage of GBTC’s discount to the value of its underlying bitcoin, the company said.