Charles Schwab said late Tuesday morning it had technical difficulties but current orders are going through normally.
Schwab told CNBC in a statement that it experienced an order routing issue for orders placed this morning before about 10:20 a.m., ET. The firm said it is still investigating the cause.
The company has a total of 10.3 million active brokerage accounts.
Earlier on Tuesday, Schwab reported a 19 percent year-over-year increase in total client assets to a record $2.9 trillion at the end of February. New brokerage accounts totaled 113,000 last month, a 35 percent increase over the prior year, the firm said.
Shares traded about 1.5 percent lower, but held gains of more than 7 percent for the year so far.
— CNBC's Ryan Ruggiero contributed to this report.