News Snapshot:
Here are Wednesday's biggest calls on Wall Street: UBS upgrades FMC to buy from neutral UBS said investors should "buy the bounce" in shares of the ag company. "We upgrade FMC stock to Buy as we believe 1Q EBITDA will reflect the bottom, and positive indicators on Brazil imports build confidence towards a normalizing 2H." JPMorgan upgrades Riot to overweight from neutral JPMorgan upgraded the bitcoin minor and says it has "relative upside." "We are upgrading Riot Platforms (RIOT) to Overweight (from Neutral)." Citi downgrades Wells Fargo to neutral from buy Citi downgraded the stock mainly on valuation. "With WFC...