Updated from 12:19 p.m.

Telesoft, a maker of telecommunications billing and customer-care software, was up 29.7% in late afternoon after trading was restarted at 2:30 p.m. The stock jumped 467.1% at the opening was halted by

Nasdaq

as of 9:35 a.m. pending further information from the company. Telesoft later issued a statement saying there were no material events to justify the stock's upward spike.

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