U.S. equity exchanges ruled to bust trades in AOL Inc.(AOL) after shares got a jarring up-and-down ride late on Tuesday.
But the exchanges let stand other wild trades in five widely held stocks, including shares of Nasdaq OMX Group Inc.(NDAQ)
After the closing bell, the exchanges said in alerts that trades made between 3:49 p.m. and 3:51 p.m. Eastern in AOL, Nabors Industries Ltd.(NBR), Lorillard Inc.(LO), Marathon Petroleum Corp.(MPC), and Canadian Natural Resources Ltd(CNQ.T) and Nasdaq clearly erroneous.
Each were subject to brief but big swings on heavy volume before the prices returned to near pre-outburst levels.
NYSE said in an alert at 5:20 p.m. that it will busting AOL trades at or below $33.17 in that window, but let others stand.
Nasdaq, Direct Edge and NYSE Arca later said they will cancel all AOL trades at or below $33.16.
A call to one NYSE spokesperson to explain the discrepancy was not immediately returned.
Tick-by-tick stock charts show that each stock made big moves on heavy volume. AOL's shares were trading near $36.72 before briefly plummeting.