Will Taser Stun the Market?

The New York Stock Exchange
Oliver Quintanilla | CNBC
The New York Stock Exchange

Stun-gun maker Taser International has been trying to work its way higher, and yesterday traders took a bullish shot on the name.

OptionMonster's scanning programs detected the purchase of 7,000 September 12.50 calls, most of which priced for $0.20. Volume was about 7 times open interest at the strike, indicating that new money was put to work.

Calls lock in the price where investors can buy shares in the company. These options can generate significant leverage in a rally because they are much less expensive than buying stock outright, but the contracts will expire worthless if the shares don't move far enough and fast enough.

Taser fell 0.52 percent to $7.70 yesterday, but is up 88 percent in the last year. It's recently been trying to make a higher low and remains above its rising 200-day moving average, which some chart watchers may consider a bullish pattern.

Total option volume was 22 times greater than average in the session, with calls outnumbering puts by more than 300 to 1.

—By CNBC Contributor David Russell

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David Russell is a reporter and writer for OptionMonster. Russell has no positions in TASR.