CarMax Inc. (KMX)
Update 12/21/2017: KMX underperformed the Street estimate of its earnings by $3.1%, coming in at 81 cents per share compared to the consensus forecast of 83.56 cents per share. The price gyrated wildly in overnight trading, spiking up nearly $2 then undergoing two wide swings, ending up after the opening bell around $3 below the prior day’s close.
Shares declined by 2.7% during my holding period of less than a day, or a -988% annual rate. The options position produced a 366.9% return for a +133,833% annual rate.
The metrics performed as expected.
The Zacks earnings surprise predictor (ESP) showed a negative surprise, which is what happened, in the context of a neutral (3) rank. The Zacks ESP has a poor record in forecasting negative earnings surprises and yet performed well in this instance.
The trend metrics showed a strong downtrend through a reversal of the directional indictators (+DI at 19.57 vs. -DI at 27.43), with the average directional index (ADX) at a powerful 30.6, indicating a strong trend. And indeed the price fell post-earns.
The movement from pre-earns close to post-earns close stayed within the average of the last four earnings announcement, dropping -2.47 compared to an average magnitude of 2.74.
At the extreme, the movement from pre-earns close to post-earns low came close to the estimate of $3.57, exceeding it by 9 cents, to -$3.66
There was strong consistency among the metrics used to assess this trade, and my takeaway is that I should reject trades that lack such consistency.
KMX publishes earnings on Thursday before the opening bell.
I shall use options that trade for the last time nine days hence, on Dec. 29.
Implied volatility stands at 33%, which is 3.4 times the VIX, a measure of the volatility of the S&P 500 index.
KMX’s IV stands in the 44th percentile of its annual range and the 77th percentile of its most recent broad movement.
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