1.   Demand for Treasuries has also been bolstered by investors looking to purchase securities so their portfolios mirror several indexes that serve as benchmarks for performance.

2.   It also has sent investors fleeing to funds that mirror the indexes, offered by Vanguard, Fidelity and others.

3.   Its performance mirrored national indexes.

4.   That means investors who mirror that index will be adding Russian shares to their portfolios.

5.   Yet Wilson and other market watchers say that mirroring the indexes now could be a mistake.

6.   Usually they mirror indexes, but they can also be focused on specific sectors.