Ross Stores rang up more than a 15 percent boost in its share price year to date, landing it at No. 11 in the top-performing S&P stocks of 2011.

ROST shares traded in the $47 range Friday, near its 52-week low of $46.30. The stock’s high within the same period was $95.24, and it had EPS of $2.70.

Trader Pete Najarian offered a word of caution on the retailer.

“When these things break, they do break kind of ugly, so you want to use your 50-day moving average as your barometer,” he said.  

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Trader disclosure: On Dec. 16, 2011, the following stocks and commodities mentioned or intended to be mentioned on CNBC’s "Fast Money" were owned by the "Fast Money" traders; Grasso owns ASTM; Grasso owns AVAV; Grasso owns BA; Grasso owns D; Grasso owns LIT; Grasso owns MH; Grasso owns PFE; Grasso owns PRST; Grasso owns S; Grasso owns XLU; Kinahan is long C; Kinahan is long MSFT and short calls; Kinahan has INTC short puts; Kinahan is long YHOO;

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McCourt is long GOLDCORP

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