U.S. Silica tumbles after results, levels to watch Price was last at $28.79, down 10.1% from yesterday's close. The company reported results that were 12 cents below consensus estimates for its Q4. At current price, next support is at $26.76, the session low. Resistance is at $29.49. The move down today puts the stock below its 10, 30, and 50-day moving averages, which is intermediate term price bearish.