Shares of Nuance Communications (NUAN) are trading lower on the session by 3.65%, at $21.88. Today?s movement is a major blow to the chart, with the $21.81 level breeched to the downside; the next major support level is near $21.00.

One trader is rolling his or her long put position on NUAN today. A short while ago the January 2013 $22 put was sold 8,000 times, on or near the bid, for $1.575 just as the April 2013 $21.00 put was purchased 8,000 times, on the offer, for $1.90.

The respective open interest on the strikes, 9,587 and 11 contracts, is consistent with a position roll.

Overall put volume is now running at 18x normal volume with 16,173 contracts traded.

30-day implied volatility is up 5.9% today to 38.12%, while 10-day realized vol is registering 18.81%.

Nuance Communications, Inc. is a provider of voice and language solutions for businesses and consumers around the world. The company’s solutions are offered in four markets: Healthcare, Mobile and Consumer, Enterprise and Imaging.