Alcoa (NYSE: AA) avoided the market's wild and crazy gyrations on Friday, delivering some relative strength.

If you want to know the truth, we're not sure why Alcoa behaved well during a market day when most things took a beating.

Maybe no one wants to bother with an aluminum company when you could sell sexier stocks short, or just avoid the market altogether.

Yet, there is no doubt about it, Alcoa looked pretty good in a major bad day for the markets, so there must be something to it.

We looked high and low, but could find nothing to remotely link to the serene performance of the stock.

So for now, we'll leave it as an unsolved enigma and keep our eye on the stock.

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