GOOG shares fell more than 15% in after-hours trading following the release of its worse-than-expected quarterly earnings. As result, the company will undoubtedly be one of the most actively-traded stocks in the market tomorrow. As you can see from the chart below, we'd expect the combined support of the 100 DMA and the November low of $377 to prop up the shares. If GOOG closes below the 100 DMA, we'd expect it to drift toward the support of the 200 DMA.