TD: Not all going swimmingly at Thinkorswim

TD Ameritrade Holding Corp. said last week that some of its clients experienced issues with electronic trades after the company integrated its Thinkorswim options broker the previous weekend. “In general, the integration has gone well, with all clients able to place trades on our platforms,” Kim Hillyer, a spokeswoman for TD Ameritrade, wrote in an e-mail. “However, we are experiencing some issues, impacting a subset of clients and their ability to place trades electronically.” Ms. Hillyer said that she couldn't give further details about the issues. TD Ameritrade identified the problem and is “actively working to resolve it,” she said. The online broker brought more than 250,000 Thinkorswim accounts to the TD platform in the final integration, according to Ms. Hillyer. TD Ameritrade bought Thinkorswim Group Inc. for $749 million in 2009 to expand beyond equities.