Upgrades:
Yandex N.V. (YNDX) upgraded to Buy from Neutral at Goldman
Downgrades:
Starbucks (SBUX) downgraded to Hold from Buy at Deutsche Bank
Other:
3M (MMM) target raised to $187 from $175 at Jefferies
Alcoa (AA) reiterated with a Buy at Stifel; target lowered to $13 from $14