Cramer's lightning round: I like Costco over Big Lots

• It's that time again! "Mad Money" host Jim Cramer rings the lightning round bell, which means he's giving his answers to callers' stock questions at rapid speed.

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Dupont de Nemours Inc: "They report tomorrow morning. ... Let's find out then."

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Charles River Laboratories International Inc: "[Buy]. Call the bottom, Charles River Labs."

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Big Lots Inc: "Let's buy Costco. Don't need anything [retail] but Costco."

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Western Digital Corp: "I'm going to have to say avoid it, until we see what they say at the end of the week."

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Boise Cascade Co: "I've got to do some more work on it, because they reported."

Disclosure: Cramer's Charitable Trust owns shares of Costco.

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