Stocks fluctuate in price and the value of your investment in a Target Retirement Fund may go down. This means that you could lose money on your investment in the Fund or the Fund may not perform as well as other possible investments. These fluctuations are a result of:

Growth style risk: Over time, a growth oriented investing style may go in and out of favor, which may lead the underlying equity growth funds in which a Target Retirement Fund invests to underperform other equity funds that use different investing styles.

Value style risk: Over time, a value oriented investing style may go in and out of favor, which may lead the underlying equity value funds in which a Target Retirement Fund invests to underperform other equity funds that use different investing styles.

Large cap risk: Large cap stocks may fall out of favor relative to small or mid cap stocks causing an underlying fund to underperform other equity funds that focus on small or mid cap stocks.

Small to mid cap risk: Smaller companies may have limited product lines, markets and financial resources. They are usually less stable in price and less liquid than those of larger, more established companies. Small or mid cap stocks may also fall out of favor and underperform large cap stocks.

Foreign equity securities are sometimes less liquid and harder to value than securities of U.S. issuers. In addition, foreign brokerage and custodian fees may be higher than those in the U.S. Prices of foreign securities may go down as a result of the following:

• Unfavorable foreign government actions, such as excessive taxation or currency controls; political, economic or market instability; or the absence of accurate information about foreign companies due in part to different financial accounting and regulatory standards.
• A decline in the value of foreign currencies relative to the U.S. dollar will reduce the unhedged value of securities denominated in those currencies.

Emerging market risk: The foreign securities risks are more significant for issuers in emerging market countries such as Eastern Europe, Latin America and the Pacific Basin. Additional risks include immature economic structure and less developed and more thinly-traded securities markets.

Fixed income securities fluctuate in price in response to various factors, including changes in interest rates, changes in market conditions and issuer-specific events, and the value of your investment in a Target Retirement Fund may go down. This means that you could lose money on your investment in the Fund or the Fund may not perform as well as other possible investments. Risks include:

Interest rate risk: As interest rates rise, the values of fixed income securities decrease and reduce the value of a portfolio. Securities with longer durations tend to be more sensitive to changes in interest rates, and are usually more volatile than securities with shorter durations. For example, if a security's duration is 10 years, a 1% increase in interest rates would result in a 10% decrease in the security's value.

Credit risk: The issuer of a security could default on its obligation to pay principal and/or interest or its credit rating could be downgraded. Default risk may be higher for below investment grade bonds.

Extension risk: When interest rates are rising, the average life of securities backed by callable debt obligations is extended because of slower than expected principal payments. This would lock in a below-market interest rate, increase the security's duration and reduce the value of the security.

Prepayment risk: When interest rates are declining, the issuer of a pass-through security, such as a mortgage-backed or an asset-backed security, may exercise its option to call the bond (i.e., prepay principal) earlier than scheduled, forcing investors in the security to reinvest in lower yielding securities.

Derivatives risk: The value of derivative instruments does not change in the manner expected by a subadviser of one or more of the Fund's actively managed underlying funds, resulting in disproportionately large losses.

Short sale risk: If the price of securities sold short increases, an underlying fund would be required to pay more to replace the borrowed securities than the fund received on the sale of the securities. Because there is theoretically no limit to the amount of the increase in price of the borrowed securities, an underlying fund's risk of loss on a short sale is potentially unlimited.

High-yield risk: There is a greater risk of losing money from investing in high-yield bonds. These securities are considered speculative because they have a higher risk of issuer default, are subject to greater price volatility and may be illiquid.

Liquidity risk: A period of low economic growth or rising interest rates could reduce the ability to sell bonds. The lack of a liquid market for these securities could decrease their prices.

Mortgage risk: Mortgage derivatives may have especially volatile prices because the imbedded leverage can magnify the impact of the extension or contraction event on the underlying cash flow. There may be a greater risk of losing money due to prepayment and extension risks.

The Target Retirement Funds may gain exposure to commodities through the allocation of a portion of their assets to an underlying Harbor fund that invests in various instruments that are linked to the returns of a commodity index.

Commodity-linked derivative instruments may have significantly greater volatility than investments in traditional securities. The value of commodity-linked derivative instruments may be affected by changes in overall market movements, commodity index volatility, changes in interest rates, or factors affecting a particular industry or commodity, such as a drought, floods, weather, livestock disease, embargoes, tariffs and international economic, political and regulatory developments. A fund that concentrates its assets in a particular sector of the commodities market (such as oil, metal or agricultural products) may be more susceptible to risks associated with those sectors.