By Laton McCartney
Members of the European Parliament tightened up the EU’s proposal on high-frequency algorithmic trading, voting that all high-frequency trading orders should be valid for one half second. The rule means orders cannot be cancelled or modified for at least five hundred milliseconds………All firms and trading venues also would have to ensure that trading systems are resilient and prepared to deal with sudden increases in order flows or market stresses. These could include Europe’s own “circuit breakers” to suspend trading………
via EU: Trades Must Live for Second | Securities Technology Monitor.