Today’s tickers: XRT, SM, AMD, MEE, EXPE, CTV & MYL XRT  - SPDR S&P Retail ETF –  Pessimism on the retail ETF took the form of a put butterfly spread today, suggesting one strategist is prepared for the price of the underlying fund to decline by December expiration. Shares of the XRT, an exchange-traded fund designed to track the performance of the S&P Retail Select Industry Index, are up 0.95% this afternoon to stand at $43.75 as of 3:10 p.m. in New York trading. The XRT’s shares are higher today following reports that economists increased estimates for consumer purchases in the third quarter after retail sales rose more than expected in September. But, nearly all of the activity in XRT options took place in puts and implies a bearish slant on the fund today. The butterfly spread involved the purchase of 5,600 puts at the December $43 strike at a premium of $1.45 each [wing 1], the sale of 11,200 puts at the December $39 strike for a premium of $0.47 per contract [body], and the purchase of 5,600 puts at the lower December $35 strike at a premium of $0.19 apiece [wing 2]. Net premium paid to initiate the bearish spread amounts to $0.70 per contract, thus positioning the investor to make money if shares of the XRT fall 3.3% from the current price of $43.75 to breach the effective breakeven point at $42.30 by expiration day in December. Maximum potential profits of $3.30 per contract are available to the trader if the price of the underlying fund declines 10.85% to settle at $39.00 at expiration. The investor paid $0.70 per contract, but stands prepared to gain more than 4.7 times that amount, or $3.30 per contract, if the transaction comes good by December expiration. SM  - SM Energy Co. –  Shares of the U.S. producer of oil and natural gas rose 4.05% today to $42.34 as of 3:25 p.m. The current rally may be an extension of gains realized last week on news the firm’s well in Cheyenne, Wyo., was spewing oil. The accident is seen as positive in some respects because it shows the ground there has oil under pressure in that area. Investors placed bullish bets on SM Energy today in order to position for shares to rally higher through the early months of 2011. One options optimist initiated a ratio call spread, buying 3,000 in-the-money calls at the February 2011 $40…