Schwab has seen volume at its call center double in the last two weeks but less than 10 percent of the callers have inquired about 401(k) plans and there has not been an increase in loan inquiries or requests.
Kohmann suggests that people call their investment company to get advice.
"We're not our own doctor, we're not our own mechanic and we shouldn't be our own investment adviser. Maybe the most important organ in investing is the stomach," he said. "Panic is not a strategy."