After brokerages halted the buying of GameStop and other securities, the price of several cryptocurrencies also began to increase substantially, with Dogecoin's value increasing over 800 percent.[51][52][53] Users of the subreddits r/CryptoCurrency and r/SatoshiStreetBets attempted to pump up Dogecoin to make it "the next GME/Bitcoin".[54] In addition, the price of Bitcoin, the world's largest cryptocurrency, increased 20 percent in value to more than $37,000 after Elon Musk endorsed it in his Twitter bio, partially related to the surge in the GameStop share price by Reddit users.[55] Robinhood then began limiting the trading on Dogecoin.[56]