Second, the G Fund has been subjected to a frequent transfer/market timing practice that is particularly insidious. The G Fund is invested in specially issued Treasury securities which provide a fixed rate of return established monthly. It is considered the TSP ‘‘stable value’’ fund, and is especially important to those cautious investors who seek security of principle and interest. Some of the frequent interfund transferors have determined that by making one-day round trips in and out of the G Fund three to five times each month, they are able to effectively collect a full month’s worth of G Fund earnings for just three to five days of actual G Fund investment. The windfall they secure comes at the direct expense of long-term G Fund investors who never anticipated that their safe retirement investment would be subjected to such mercenary treatment by their fellow TSP participants. Practitioners visit a Web site in order to compare notes and calculations to assist each other in the execution of this scheme. They congregate at a message board which they have aptly titled ‘‘G Fund Payday.’’ Indeed, like ghost workers, these individuals only show up in the G Fund on the days when their calculations show that G Fund shares will increase in value. With a finite amount of earnings to be allocated, these individuals unquestionably dilute G Fund value at the expense of longterm investors. This indefensible practice will be severely curtailed by the limit on interfund transfers. Additionally, the Agency will make a structural change beyond the purview of this rulemaking which will totally eradicate this particularly abusive form of frequent interfund transfer activity.