Two Exablaze ExaNIC HPT each with 2 x Exablaze EXASFP10GSR 10G SFP+ in a Dell PowerEdge R730 Server

In the EU, MiFID 2 requires firms to capture certain trading events and timestamp them to within certain allowed deviations from UTC. In the US, the new CAT NMS plan requires SROs to synchronize clocks to within 100 microseconds of NIST time, and it is probably only a matter of time before that extends to other market players.