Platinum cards are delivering on their promise as the most profitable type of bank cards, with gold cards and cobranded products close behind, according to a study by investment banker Robert K. Hammer.

Mr. Hammer, who specializes in card portfolio sales, found that industry profitability declined in 1997 for the third straight year, but concluded that "there is profit to be made-and improved upon-in virtually every credit card product category."

Subscribe Now

Access to authoritative analysis and perspective and our data-driven report series.

14-Day Free Trial

No credit card required. Complete access to articles, breaking news and industry data.