Returns (as of 3/31/2013)

Past performance does not guarantee future results. The performance data quoted represents past performance and current returns may be lower or higher. The investment return and principal value of an investment will fluctuate so that an investor's shares, when redeemed, may be worth more or less than the original cost. For standardized returns year-to-date and as of the most recent calendar quarter-end, see performance Returns include the reinvestment of dividends and capital gains.

Returns include the reinvestment of dividends and capital gains.

All data, unless otherwise noted, is as of 3/31/2013 and for Investor Class Shares only and is subject to change.

Index/Benchmark

Dow Jones U.S. Internet Composite Index

The Index (Bloomberg symbol: DJINET) measures the performance of stocks in the U.S. equity markets that generate the majority of their revenues from the Internet. The Index is composed of two sub-groups: Internet Commerce, which includes companies that derive the majority of their revenues from providing goods and/or services through an open network, such as a website, and Internet Services, which includes companies that derive the majority of their revenues from providing access to the Internet or providing services to people using the Internet. It is not possible to invest directly in an index.

Index as of 3/31/2013

Narrowly focused investments typically exhibit higher volatility.