This is a fantastic example of a topping tail on the IBM chart. Note the topping tail is 1. at the highs of recent history, 2. The tail (wick) is 50% or greater of the entire candle length, 3. The body is 50% or less of the entire candle length and 4. the close is in the bottom 25% of the candle.
Note the 50% retrace the next day giving a great short entry and...