A laptop containing information on 6,500 investors' accounts, including Social Security numbers in some cases, was stolen in late May at Old Mutual Capital, The Wall Street Journal reports. The company sent letters to all of the investors informing them of the theft and giving them access to a credit report monitoring service for a year. In addition, Old Mutual told the clients that it has since installed additional security measures on all of its clients' accounts.

So far, there have been no signs of any fraudulent activity in the affected accounts, an Old Mutual spokesman said.

Subscribe Now

Access to premium content including in-depth coverage of mutual funds, hedge funds, 401(K)s, 529 plans, and more.

3-Week Free Trial

Insight and analysis into the management, marketing, operations and technology of the asset management industry.