NEW YORK (TheStreet) -- The month of September begins with more earnings from discount retailerDollar Tree (DLTR) - Get Dollar Tree, Inc. Report, video and image processing products maker Ambarella (AMBA) - Get Ambarella, Inc. Report and tax preparation company H&R Block (HRB) - Get H&R Block, Inc. (HRB) Report.

Among these companies, the one to focus on is Dollar Tree, which recently completed its merger with Family Dollar Stores. For the second quarter of fiscal 2015, analysts are forecasting the company to post profits of 62 cents a share on revenue of $3.04 billion. Last week, another discount retailer, Dollar General (DG) - Get Dollar General Corporation Report, posted its financial results that missed analysts' estimates on the top line.

Despite Dollar General's mixed earnings performance, TheStreet'sJim Cramer is optimistic about Dollar Tree. "I think that Dollar Tree is a better operator than Dollar General, and I think that the merger is brilliant," he said. "So, if Monday turns out to be a negative session, maybe put some on Dollar Tree because I think they're going to do better than Dollar General."

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