MP Pension, Gentofte, Denmark, has temporarily stopped investments in Danske Bank.
A notice on the 114.9 billion Danish kroner ($18.1 billion) pension fund's website said it decided last week to make a time-limited stop.
The decision is in reaction to allegations against the bank's business in Estonia. The MP Pension notice said its executives had been in discussion with representatives of the bank.
The fund's responsible investment policy contains rules for a temporary stop to investments related to those companies suspected to have breached MP Pension's policy.
Spokesmen for MP Pension could not be reached for comment.