In Tuesday's Analysts' Actions, upgrades from Wall Street Analysts are moving Tesla (TSLA), Groupon (GRPN) and Staples (SPLS) higher in the session. Tesla is now rated a 'Buy', up from 'Hold' at Stifel Nicolaus. The firm has a $400 price target for Tesla, which is the highest on Wall Street so far saying it sees the company 'well positioned for growth in the luxury electric vehicle market.' Groupon (GRPN) was raised to 'Sector Perform' from 'Underperform' at RBC. The firm has a $6 price target and thinks the drop in the stock as a more reasonable valuation. Staples (SPLS) is upgraded at Credit Suisse (CS) to 'Outperform' with its price target also raised to $15 from $11 a share. The firm says the current valuation limits downside and possibility of merger gives an attractive entry.

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