Effective April 30, 2013, certain changes were made to the Fund’s investment objective and principal investment strategies. Performance information prior to that date reflects the Fund’s prior principal investment strategies.

Performance displayed represents past performance which is no guarantee of future results. Investment returns and principal value will fluctuate so that when shares are redeemed, they may be worth more or less than original cost. Current performance may be lower or higher than the performance data quoted. Returns for performance under one year are cumulative, not annualized. Load performance shown reflects maximum sales charges or contingent deferred sales charges (CDSC) as applicable. Class A-shares have a maximum sales charge of 4.75%. Effective 2/22/2011, the A-Class maximum front-end sales charge was changed from 5.75% to 4.75%. For performance periods that begin prior to 2/22/2011, a 5.75% load was used and for performance periods that begin after 2/22/2011, a 4.75% load was used. Class B-shares have a maximum CDSC of 5% for redemptions during the first year, decreasing to 0% for redemptions in the sixth and following years. Class B shares are no longer available for purchase. Class C-shares have a maximum CDSC of 1% for shares redeemed within 12 months of purchase.

Data is subject to change on a daily basis. Partial year returns are cumulative, not annualized. Returns reflect the reinvestment of dividends. The securities mentioned are provided for informational purposes only and should not be deemed as a recommendation to buy or sell.

This fund may not be suitable for all investors. • Investments in mid-sized company securities may present additional risks such as less predictable earnings, higher volatility and less liquidity than larger, more established companies. • Growth stocks may be more volatile than other stocks because they are more sensitive to investor perceptions regarding the growth potential of the issuing companies. • The Fund may invest in derivative instruments, which may be more volatile and less liquid, increasing the risk of loss when compared to traditional securities. Certain of the derivative instruments are also subject to the risks of counterparty default and adverse tax treatment. • The Fund’s use of leverage, through borrowings or instruments such as derivatives, may cause the Fund to be more volatile than if it had not been leveraged. • The Fund’s investments in other investment vehicles subject the Fund to those risks and expenses affecting the investment vehicle. • The Fund may invest in foreign securities which carry additional risks when compared to U.S. securities, due to the impact of diplomatic, political or economic developments in the country in question (investments in emerging markets securities are generally subject to an even greater level of risks). • The Fund may invest in fixed income securities whose market value will change in response to interest rate changes and market conditions among other factors. In general, bond prices rise when interest rates fall and vice versa. • The Fund's exposure to high yield securities may subject the Fund to greater volatility. • The Fund may invest in bank loans and asset-backed securities, including mortgage-backed, which involve special types of risks. • The Fund may invest in restricted securities which may involve financial and liquidity risk. • You may have a gain or loss when you sell your shares. • It is important to note that the Fund is not guaranteed by the U.S. government. • Please read the prospectus for more detailed information regarding these and other risks.