Top Analyst Downgrades (DELL, MLM, NVTL, SWIR, UNT, VMC)

These are this Tuesday’s top pre-market analyst downgrades or cautious research calls we have seen out of Wall Street early on:

Dell (DELL) downgraded to Neutral at Credit Suisse.
Martin Marietta (MLM) downgraded to Neutral at UBS.
Novatel Wireless (NVTL) Started as Underperform at BMO Capital.
Sierra Wireless (SWIR) Started as Market Perform at BMO Capital.
Unit Corp. (UNT) Cut to Neutral at Sun Trust Robinson Humphrey.
Vulcan Materials (VMC) downgraded to Neutral at UBS.

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