Weight Watchers, Sportsman's Warehouse, Calithera Biosciences Stocks Moving Today

Calithera Biosciences is expanding its collaboration with Bristol-Myers

May 19, 2017 at 2:39 PM
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U.S. stocks are set to end the day higher. Among the names making big moves are dieting specialist Weight Watchers International, Inc. (NYSE:WTW), sporting goods retailer Sportsman's Warehouse Holdings Inc (NASDAQ:SPWH), and biotech Calithera Biosciences Inc (NASDAQ:CALA). Here's a quick look at what's moving shares of WTW, SPWH, and CALA.

WTW Stock Surges to Another High

Weight Watchers stock has been famous for making big moves, and it's happening again today, with the shares gaining 9.4% at $25.87, earlier hitting an annual high of $26.31. There doesn't appear to be any specific news driving today's move, but WTW stock has been on fire this year, now sporting a year-to-date gain of 128%. Yet, short interest remains very elevated, and options traders continue to buy puts over calls. Specifically, WTW has a 10-day put/call volume ratio of 2.89 at the International Securities Exchange (ISE), Chicago Board Options Exchange (CBOE), and NASDAQ OMX PHLX (PHLX), which ranks in the 89th annual percentile. Today, in fact, WTW put volume is on pace for the 99th percentile of its annual range.

SPWH Stock Makes a Big Post-Earnings Move

SPWH stock is one of the top gainers on the Nasdaq, last seen 16.5% higher at $5.51 -- on pace for its best single-day percentage gain in a year and a half -- thanks to better-than-expected first-quarter results. Unfortunately, Sportsman's Warehouse's 100-day moving average has halted the stock's upward momentum, just as it did back in December, and the shares remain well below their year-to-date breakeven mark of $9.39. Short sellers are certainly hoping today is an anomaly, since it'd take them roughly two weeks to cover their positions, based on average trading volumes. 

CALA Stock Touches Two-Year High

CALA stock is up 14.2% today at $15.65, earlier hitting a two-year high of $15.85, though it's uncertain what's driving the shares higher. It's been an incredible run for Calithera Biosciences shareholders, considering Calithera stock was trading at just $3.25 at the end of 2016. CALA has likely enjoyed a short squeeze in recent weeks, as short interest dropped by more than 50% during the most recent reporting period.


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