[Cryptocurrency trading platform STS Digital completes $30 million financing, led by CMT Digital] Odaily Planet Daily reports that cryptocurrency trading platform STS Digital has announced the completion of a $30 million financing round, led by CMT Digital. Participants include cryptocurrency exchange Kraken, venture capital firm Arrington Capital, and an investment institution under Fidelity Investments. STS Digital co-founder and CEO Maxime Seiler declined to disclose the company’s valuation for this round. The new funds are intended to expand its cryptocurrency perpetual contracts (rather than options) business. (Fortune)