T Rowe Price is taking steps to crack down market timing within retirement plans by penalizing retirement plan investors for quickly selling their newly purchased mutual fund shares, Dow Jones Newswires reports.

The new short-term trading restrictions covering various types of pension programs, including 401(k) plans and IRAs, are scheduled to take effect Jan. 1. The reforms extend to plans in which T. Rowe Price, or third-party financial service vendors, provide recordkeeping services.

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