7 Stocks you need to know for Tuesday

Alltel (AT | charts | news | PowerRating) reports earnings Tuesday morning before the market opens; watch for $0.58 EPS.

When Elan (ELN | charts | news | PowerRating) announces earnings on Tuesday morning, watch for -$0.22 EPS.

FirstEnergy (FE | charts | news | PowerRating) is looking to announce $0.85 EPS when the company reports earnings on Tuesday morning.

When Home Depot (HD | charts | news | PowerRating) reports quarterly earnings on Tuesday before the market opens, look for $0.51 EPS.

Wal-Mart (WMT | charts | news | PowerRating) is expected to announce $0.90 EPS on Tuesday morning.

Both Hewlett-Packard (HPQ | charts | news | PowerRating) and Medtronic (MDT | charts | news | PowerRating) report earnings Tuesday after the close, so watch for heightened price action and volatility ahead of the bell.