Federal Reserve employees, along with members of the Boilermakers Union have been practicing market-timing in order to make a quick profit in international mutual funds, The Wall Street Journal reports.

Apparently, the rapid in-and-out trading has been so fast and furious that letters have been sent to current and retired shareholders of the Fed’s employee thrift plan, run by T. Rowe Price, to discourage the practice. Several rule changes have been implemented, as well.

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