Major U.S. credit card issuers posted lower delinquencies in May, while net charge-offs were a mixed bag.

The average delinquency ratio among master trust portfolios at the six largest card issuers — American Express Co., Bank of America Corp., Capital One Financial Corp., Citigroup Inc., Discover Financial Services and JPMorgan Chase & Co. — declined 4 basis points month over month to 1.43% in May.

Meanwhile, the average net charge-off dropped 10 basis points month over month to 2.35%. The group's average trust portfolio loan yield rose 57 basis points month over month to 20.78% in May.

Did you enjoy this analysis? Click here to set alerts for future Data Dispatches. Click here for the underlying data for credit card master trust yields, net charge-offs and delinquencies. The monthly performance of these trusts are reported in Form 10-D filings, which can be accessed under the Documents section of a company's briefing book page on the S&P Global Market Intelligence platform.