CBOE Holdings Inc. is reviewing all trades on the Chicago Board Options Exchange and its C2 electronic venue from 8:30 to 8:41 a.m. Tuesday morning, according to the CBOE website. The trades under review may be adjusted or nullified, CBOE said on the website.
A CBOE spokeswoman said the has been operating all day with no interruptions.
Additionalls NYSE Amex Options is reviewing a large number of erroneous trades that took place in stocks beginning with H, I, J, K and L between 8:30 a.m. CDT and 8:47 a.m. CDT, NYSE Euronext said.
The exchange operator said while it is still reviewing the issue, it anticipates that most of the affected trades will be busted.
Nasdaq OMX Group also is reviewing a batch of options trades from this morning.