Cramer thinks you should wait on Ubiquiti Networks and Potash is just ok.
It's a full week of earnings and Cramer said he'll be watching and planning his investing strategy.
This was a good week, and the markets may still have the wind at its back starting on Saturday when Berkshire holds its annual meeting, Cramer said.
Cramer likes Kansas City Southern but is no longer interested in Norfolk Southern or CSX.
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