We saw some interesting moves after the end of the trading day yesterday, and the following stocks were affected: Alcoa Inc. (NYSE:AA), Chevron Corp. (NYSE:CVX) and CSX Corp. (NYSE:CSX).

Here is a more detailed look at each company’s after hours trading.

Alcoa Inc. (NYSE:AA)

Alcoa Inc. (NYSE:AA) opened lower on Monday but gained 3.2 percent to reach a high of $11.22.

Alcoa Inc. (NYSE:AA), the largest aluminium producer in the US, reported second-quarter profit that topped the consensus analyst prediction as higher metal prices helped to boost profits for the company this quarter.

Chevron Corp. (NYSE:CVX)

Chevron Corp. (NYSE:CVX) is the second-largest energy producer in the U.S. and said recently that it expects to report higher second-quarter earnings over the first quarter.

This increase is due to higher margins that have been able to compensate for a drop in oil and gas output at its refineries.

CSX Corp. (NYSE:CSX)

CSX Corp. (NYSE:CSX) shares came charging out of the gate Monday morning after an initial drop as the freight-transportation company reported higher second-quarter earnings than expected.

The company’s Q2 earnings of $1.07 a share beat the average analyst estimate by a relatively large margin – 10 percent.

We could see more movement when the stock exchanges open later today for Alcoa Inc. (NYSE:AA), Chevron Corp. (NYSE:CVX) and CSX Corp. (NYSE:CSX).