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This guy has 45 credit cards. Here’s what you can learn from his strategy.

June 27, 2025
12:36 PM
2 min read
AI Enhanced
financebusinessmoneyfinancialfinancial servicesretailmarket cyclesseasonal analysis

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Dave Grossman carries a “Costanza wallet,” and he says he’s reaped rewards aplenty as a result.

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2 min read

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investment

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Published

June 27, 2025

12:36 PM

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MarketWatch

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Key Topics
financebusinessmoneyfinancialfinancial servicesretailmarket cyclesseasonal analysis

Advanced ➔ Results This guy has 45 credit cards

Here’s what you can learn from his strategy

Dave Grossman carries a ‘Costanza wallet,’ and he says he’s reaped rewards aplenty as a resultLast d: June 27, 2025 at 8:36 a

ETFirst Published: June 26, 2025 at 1:34 p

ETResizeListen(8 min)Credit-card fanatic Dave Grossman carries what he calls a “Costanza wallet. ” Photo: Courtesy Dave GrossmanMost people keep a few credit cards in their wallet for their spending needs

Dave Grossman has an army’s worth at his disposal

To be specific, Grossman, a 49-year-old entrepreneur who calls suburban New York City , has 45 credit cards

Admittedly, he doesn’t keep all of them in his physical wallet, though he admits his billfold is George Costanza-worthy, to borrow a “Seinfeld” reference. the Author Charles PassyCharles Passy covers a variety of topics, includingpersonal finance, food, entertainment and anything and everything and quirky

He also writes the Weekend Sip column, which covers wine, spirits and beer

In his spare time, he obsesses where to find the perfect slice of New York-style pizza. him on Twitter @CharlesPassy

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