Check out which companies are making headlines before the bell Monday:
Visa - Robert W. Baird upgraded the card-transaction processor to outperform from neutral.
Johnson & Johnson - Jefferies downgraded the pharmaceutical company to hold from buy.
Eli Lilly - Jefferies upgraded its shares to hold from underperform.
Lexicon Pharmaceuticals - The company said its experimental diabetes treatment hit the key goal in a clinical test.
—By CNBC's Kate Gibson.
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