The financial services company is also mired in a court case brought by crypto custody firm BitGo. Telis Demos and Alexander Osipovich, TD Ameritrade and high-Speed Traders Back New Crypto Exchange, The Wall Street Journal, (Oct. 3, 2018, 10:08AM), wsj.com articles td-ameritrade-and-high-speed-traders-back-new-crypto-exchange-1538567539. Galaxy Dig