Nearest Resistance: $13 Nearest Support: $11.50 Catalyst: Earnings Miss Mid-cap building product maker Masco ( MAS) is selling off around 5.3% right now thanks to an earnings miss that shoved shares to a loss in the second quarter after one-time charges were factored in. >>7 Stocks for a Housing Rebound The price move is pretty significant for shareholders right now. That's because Masco had been forming a bullish ascending triangle setup, but today's gap down pushed shares outside of the pattern. An aborted bullish pattern may as well be a bearish pattern, so at this point, I'd expect MAS to at least test support at $11.50. Buyer beware. As of the most recently reported quarter, Masco was one of David Tepper's Appaloosa Management holdigns.