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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