Shares of ACI Worldwide (ACIW) are trading higher on the session by 15.92%, at $44.48. The stock rocketed higher this morning following the release of its Q3 earnings results; while ACIW missed for the quarter, the company reaffirmed the full year, above analyst?s expectations.

Shares have now managed to regain the 50-day and 200-day moving averages. One trader is buying puts on the name today. Shortly after the opening bell the November $40.00 put was purchased 5,000 times, above the offer for $0.25; the spread was $0.00/0.20 at the time of trade.

Given the fact that there are 5,640 contracts in open interest, it is possible that this is a closing transaction on existing short puts.

30-day implied volatility is off 19.3% today to 28.07%, while 10-day realized vol is registering 3.13%.

ACI Worldwide, Inc. develops, markets, installs and supports a line of software products and services primarily focused on facilitating electronic payments.