U.S. stock exchanges and markets must establish a uniform system for tracking all orders and trades under an SEC rule approved Wednesday. The change should make it easier for the government to investigate market disruptions like the 2010 Flash Crash.
Singapore Exchange agreed to buy Australian exchange ASX for A$8.4 billion ($8.3 billion).
The Singapore Exchange offer is worth A$48 per share of ASX, a 37% premium over the company%u2019s closing price on Oct. 22, Bloomberg News reported. The two exchanges will be separate legal entities and subject to local regulation.