This guy has 45 credit cards. Here’s what you can learn from his strategy.
Key Takeaways
Dave Grossman carries a “Costanza wallet,” and he says he’s reaped rewards aplenty as a result.
Article Overview
Quick insights and key information
2 min read
Estimated completion
investment
Article classification
June 27, 2025
12:36 PM
MarketWatch
Original publisher
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
Show Conversation (0)Copyright © 2025 MarketWatch, Inc
Terms of Use DPrivacy NoticeCookie Notice MarketWatchCustomer CenterNewsroom RosterVirtual Stock ExchangeMarketWatch GuidesCopyright PolicyManage NotificationsCancel My SubscriptionCompanyDow JonesCode of ConductCorrectionsRes & LicensingDigital Self ServiceYour Ad ChoicesCorporate SubscriptionsAccessibilityDow Jones NetworkThe Wall Street JournalBarron'sInvestor's DailyBigChartsFinancial News Londonrealtor
ComMansion GlobalDow Jones Smart MoneyIntraday Data vided by FACTSET and subject to terms of use
Historical and current end-of-day data vided by FACTSET
All quotes are in local exchange time
Real-time last sale data for U
Stock quotes reflect trades reported through Nasdaq only
Intraday data delayed at least 15 minutes or per exchange requirements.
Related Articles
More insights from FinancialBooklet