Check out which companies are making headlines before the bell Monday:
Whole Foods Market—Piper Jaffray upgraded to overweight from neutral shares of the natural supermarket chain.
Sysco—The food distributor reported fiscal second-quarter earnings of 36 cents a share, and adjusted earnings of 40 cents a share on sales of $11.2 billion.
Goldman Sachs—Guggenheim upgraded its shares from neutral to buy, citing strong investment banking activities and a bounce back in brokerage fees.
—By CNBC's Kate Gibson.
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