NEW YORK ( TheStreet) -- The consumer discretionary sector includes companies that offer goods and services like TV services, dining out, online purchases and home-improvement products that people buy only if they can afford them.This morning we learned that retail sales in July were stronger than expected with a gain of 0.8%. Excluding autos, retail sales rose 0.8%, and, excluding autos and gasoline, they rose 0.9%, also better than expected. This will likely give consumer discretionary stocks a boost in today's trading. Despite weak consumer confidence since the beginning of the "Great Credit Crunch" in late 2007, several stocks in this sector have set all-time highs or multi-year highs since May. As such, Investors should consider booking profits in some of these stocks. My benchmark for the sector is the Consumer Discretionary Sector SPDR Fund ( XLY), which contains 81 stocks. I will be focusing on the top 17 stocks in the fund by index weighting, each of which is 2% or higher. The consumer discretionary sector is undervalued by 1.3%, according to ValuEngine, which is as neutral as you can get based on fundamentals. XLY traded to an all-time high of $46.27 on May 1 after trading as low as $15.85 in March 2009, a gain of 191.9%, which is reason enough to consider booking profits. The daily chart shows that XLY ($44.64) is positive with rising momentum (12x3x3 daily slow stochastic) reading with XLY above its 21-day, 50-day and 200-day simple moving averages at $43.92, $43.54 and $42.28, respectively. My semiannual and annual value levels lag at $39.91 and $36.46 with a weekly pivot at $44.60 and monthly and quarterly risky levels at $47.52 and $50.12.