UBS Group AG and Deutsche Bank AG held talks about combining their businesses earlier this year, including discussions in mid-June about an investment banking alliance, the Wall Street Journal reported on Sunday.
A deal could not be reached as the two lenders were not able to sort out issues including structuring and allocating capital, the newspaper reported, citing people familiar with the talks.
Reuters reported in May that discussions stalled between the two banks on a tie-up of their asset management businesses due to differences over who would control the combined entity.
Deutsche Bank declined to comment on the WSJ report. UBS did not respond to a request for immediate comment on Sunday.