Tractor Supply (TSCO) shares are tanking and that's giving Credit Suisse (CS) reason to upgrade the stock. The firm says the stock is attractive after declining 25 percent year-to-date. The new rating is an Outperform from Neutral. Alcoa (AA) is revised higher at Morgan Stanley (MS) after solid earnings earlier this week. The firm gives the aluminum giant an Overweight rating. A downgrade for Lumber Liquidators (LL) from Jefferies to a Hold from Buy rating. The firm says it doesn't like the reduction it sees in store growth, trends and deteriorating visibility. TheStreet's Susannah Lee has today's Analysts' Action from Wall Street.

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