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Desktop users of TD Ameritrade's thinkorswim trading platform were unable to access it on Monday morning due to an outage caused by an unspecified "system issue."
The outage, which followed multiple outages on the websites of TD Ameritrade and other financial firms earlier this year, led several investors to take to Twitter to complain about trades they were unable to make and money they lost as a result.
"Earlier this morning, we encountered a system issue that caused clients using the thinkorswim desktop application to experience difficulty accessing the platform," a TD Ameritrade spokesperson told ThinkAdvisor at about 11:30 a.m. Eastern time.
However, "during this time, clients could access their accounts and place trades through all of our other platforms, including thinkorswim Web and the thinkorswim mobile application," she said, adding: "We apologize for the inconvenience and take the performance and reliability of our trading platforms very seriously."
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