Bitcoin exchanges are stepping up their game to lure high-speed traders like Virtu and Citadel

The cryptocurrency market is known for a profusion of cryptocurrency exchange venues. 
To compete for business from large trading firms, some crypto exchanges are building out their infrastructures to look like traditional equities exchanges.
Exchanges such as Gemini and Coinbase have begun supporting block trading. 
Some crypto exchanges are rolling out new liquidity programs and considering co-location and other market structure developments, according to executives. 
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