Forex ECN FastMatch has some good news for its soon-to-be-new owners, Euronext NV (EPA:ENX).

Data from FastMatch indicate that volumes in its system increased by 18% MoM in May, to average $22.5 billion ADV for the month.

That makes May 2017 FastMatch’s best ever month for trading volumes, well ahead of March’s $19.2 billion, and the first time that FastMatch has passed the $20 billion ADV level in a given month.

FastMatch’s three owners, Global Brokerage Inc (NASDAQ:GLBR), Credit Suisse and BNY Mellon Corp, announced in late May that they are selling 90% of the company to Euronext NV (EPA:ENX) for $153 million. Closing of the deal is expected in Q3 2017, subject to regulatory and anti-trust approvals.