Vanguard Global Bond Index

Objective And Strategy

Objective
Seeks to track the performance of a benchmark index that measures the investment return of the global, investmnet grade, fixed income market.

Strategy
The Portfolio invests in a mix of Vanguard mutual funds and Vanguard Variable Insurance Fund (VVIF) portfolios (underlying funds) according to an asset-allocation strategy that reflects an allocation of approximately 70% of the Portfolio’s assets to domestic fixed income securities and 30% to non-U.S. fixed income securities. Through this asset allocation strategy, the Portfolio seeks to track the investment performance of a composite index consisting of 70% Bloomberg Barclays U.S. Aggregate Float Adjusted Index and 30% Bloomberg Barclays Global Aggregate exUSD Float Adjusted RIC Capped Index (USD Hedged).
Low Cost Fund

Principal Risks

* The portfolio's exposure to the US Dollar Index and/or foreign currencies subjects the portfolio to the risk that foreign currencies will fluctuate in value relative to the US Dollar or, in the case of short position, that the US Dollar will decline in value to the currency being hedged. Currency rates in foreign countries may move significantly over short periods of time for a number of reasons including changes in interest rates, the imposition of currency controls or other political developments in the US or abroad.

* At times, the Fund's investments may represent industries or industry sectors that are interrelated or have common risks, making it more susceptible to any economic, political, or regulatory developments or other risks affecting those industries and sectors.

* The value of your investment in a Fund is based on the net asset value ("NAV") of the underlying funds and, in turn, the securities that the underlying funds hold. The Funds are subject to the risk that one or more underlying funds will not perform as expected or will underperform other similar funds or that the combination of underlying funds selected by the Funds' investment will not perform as expected. The Funds will be exposed to all of the risk of an investment in the underlying Funds.

* This Fund does not use defensive strategies or attempt to reduce its exposure to poorly performing stocks. Therefore, if the index performs poorly, the Fund, because it is correlated to the index, will perform poorly. Correlation between the Fund's performance and that of the index may also be negatively affected by the Fund's expenses, changes in the composition of the index, and the timing of purchase and redemption of Fund shares.

* Credit risk is the risk that the issuer of a security may be unable to make interest payments and/or repay principal when due. A downgrade to an issuer's credit rating or a perceived change in an issuer's financial strength may affect a security's value, and thus, impact the VA Short-Term Fixed Portfolio's performance.

* Rising interest rates will generally cause the prices of bonds and other debt securities to fall. Longer maturity debt securities may be subject to greater price fluctuations than shorter maturity debt securities. In addition, falling interest rates may cause an issuer to redeem, call or refinance a debt security before its stated maturity, which may result in the fund having to reinvest the process in lower yielding securities.