With

Carnival Cruise

(CCL) - Get Report

shares popping Friday, it's time for

Royal Caribbean

(RYL)

to play catch-up, Jim Cramer said on

CNBC's

"Stop Trading!" segment Friday.

"Royal Caribbean deserves a premium multiple to Carnival, but that's not how the market plays it," Cramer said. The stock "is not up enough."

Cramer said homebuilders like

KB Homes

(KBH) - Get Report

are cheap enough that their downside risk is minimal, while the upside is huge. "Any pause from the

Fed

, and this will be the coiled spring of the market and the stocks will take off," Cramer said. "I don't see these companies going down to two times earnings."

Cramer was also bullish on

Martek

(MATK)

, saying a recent contract win with

General Mills

(GIS) - Get Report

suggests the company is leaving its status as a "total show-me stock."

At the time of publication, Cramer had no positions in the stocks mentioned.

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