Micron Technology, Inc. (NASDAQ:MU) shares are selling off on Wednesday, dropping below $780 after breaking below a level that had been acting as support. That breakdown is why Micron is the Stock of the Day.

The shares have fallen through the $820 level that recently served as a floor. Now that this support has broken, a larger move lower may follow.

Back in June, $820 was resistance for Micron. When that resistance broke, many of the traders and investors who had sold around $820 regretted doing so. They decided that, given the chance, they would buy their shares back at the same price they let them go.

So when the stock later fell back to $820, those disappointed sellers placed buy orders there. The large concentration of orders created support and put a floor under the price. For a while, impatient buyers even nudged their bids higher, pushing the shares into an uptrend.

Now that floor has cracked. With Micron trading below $820, the buyers who built that support appear to have left the market — their orders filled, finished or canceled.

When support breaks — meaning the stock trades and stays below it — new sellers entering the market have a hard time finding buyers. They are forced to offer shares at a discount and undercut one another, which can accelerate the decline.

With $820 gone, the chart shows the next meaningful level of support down at $660. If sellers stay in control, that is the area where buyers may next step in to try to establish a floor. Until then, Micron could remain in a fresh downtrend.

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