NEW YORK ( TheStreet) -- Today's buy-and-trade earnings preview covers five companies from the finance sector, three from the computer and technology sector, and one each from consumer discretionary, consumer staples and retail-wholesale sectors.The ValuEngine valuation warning continues with 77.7% of all stocks being overvalued, 44% by 20% or more. Fifteen of 16 sectors are overvalued, 13 by double-digit percentages, nine by more than 20%. The finance sector is 19.2% overvalued with an equal-weight rating. Of the 3061 stocks in this sector 80.9% have hold ratings. The computer and technology sector is 24.1% overvalued with an overweight rating with 47.5% of the 1160 stocks in the sector rated buy or strong buy. The consumer discretionary sector is 23.1% overvalued with an equal-weight rating. Of the 405 stocks in this sector 81.5% have hold ratings. The consumer staples sector is 17.2% overvalued with an overweight rating with 51% of the 263 stocks in the sector rated buy or strong buy. The retail-wholesale sector is 25.4% overvalued with an overweight rating with 80.3% of the 351 stocks in the sector rated buy or strong buy. Three of the 11 stocks in today's table have buy ratings, and eight have hold ratings. One stock is 9.8% undervalued and 10 are overvalued by 12.2% to 40.0%. One stock is down 10.5% over the last 12 months with 10 up between 10.6% and 52%. Two stocks are below their 200-day simple moving averages with nine above which reflects the risk of reversion to the mean.