Top Analyst Upgrades and Downgrades (ADT, DD, EXC, FIG, HUN, JNPR, MNKD, QCOM, SSTK, TGT, UNH, DIS, WDAY, ZUMZ)

These are some of the top analyst upgrades, downgrades and initiations seen in Wall St. research calls this Monday.

ADT Corp. (NYSE: ADT) started as Buy at Citigroup.

E.I. du Pont de Nemours & Co. (NYSE: DD) cut to Neutral at Piper Jaffray.

Exelon Corp. (NYSE: EXC) cut to Hold at Argus.

Fortress Investment Group LLC (NYSE: FIG) raised to Outperform at Oppenheimer.

Huntsman Corp. (NYSE: HUN) raised to Overweight at Piper Jaffray.

Juniper Networks Inc. (NYSE: JNPR) cut to Sector Perform at Pacific Crest.

MannKind Corp. (NASDAQ: MNKD) started as Buy at BofA/ML.

Qualcomm Inc. (NASDAQ: QCOM) raised to Buy at Nomura.

Shutterstock Inc. (NYSE: SSTK) started as Hold at Deutsche Bank, started as Equal Weight at Morgan Stanley and started as Buy at Jefferies.

Target Corp. (NYSE: TGT) raised to Overweight at JPMorgan.

UnitedHealth Corp. (NYSE: UNH) started as Outperform at Credit Suisse.

The Walt Disney Co. (NYSE: DIS) raised to Buy at Argus.

Workday Inc. (NYSE: WDAY) started as Buy at Canaccord Genuity and started as Outperform at William Blair.

Zumiez Inc. (NASDAQ: ZUMZ) cut to Neutral at JPMorgan.

JON C. OGG