What happened

Shares of Cal-Maine Foods, Inc. (NASDAQ:CALM) gained 13% last month according to data from S&P Global Market Intelligence as the nation's largest egg producer benefited from rising prices, anticipation for the company's October earnings report, and an escape from the impact of Hurricane Irma.

As the chart below shows, the stock rose steadily over the course of the month.

CALM Chart

CALM data by YCharts

So what 

Egg prices appear to be recovering from lows over much of the last year as the stock started moving higher at the end of August after falling for much of 2017. The company also reported that some of its farms in Florida and Georgia suffered minor physical damage and flooding after Hurricane Irma, but said it doesn't anticipate any material loss in egg production from the storm.

Rows of brown eggs in cartons.

Image source: Getty Images.

Now what

Cal-Maine reported first-quarter earnings Monday, with shares finishing up 1.3% despite the results missing estimates. Revenue increased 9.6% to $262.8 million, which was below expectations of $264.1 million. Meanwhile, on the bottom line, its net loss per share narrowed from -$0.64 a year ago to -$0.33, but that was short of estimates at -$0.18.

Dozens of eggs sold rose 3% to 249,464, while average selling price was up 7% to $1.017, although average prices for specialty eggs fell 5%. 

Nonetheless, investors appeared to be pleased with the report as the stock continued to gain on Tuesday, increasing as much as 7.5%.

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