AGGRESSIVE GROWTH ACCOUNT

Following is a summary of information about the Sentry Aggressive Growth Account. Investors are advised to learn key data about an investment prior to making any investment decision.

Objective

The objective of this account is to seek long-term growth of capital. It is invested solely in the Janus Research Fund. Prior to January 1, 2007, this fund was known as the Janus Mercury Fund.

Investor Profile

The Aggressive Growth Account may be suitable for investors with a very long-term investment horizon who are pursuing long-term growth and are willing to accept the significant risks and potential rewards of investing with an advisor who has a very wide investment latitude and can invest in common stocks of any size and may invest without limit in foreign securities. Individuals must be willing and able to accept substantial change in unit price in the short, long and very long term.

Investment Strategy

Janus Research Fund invests primarily in the common stocks of companies of any size selected for their growth potential. The fund´s charter provides the advisor with an extremely wide range of investment options in pursuit of attractively priced growth companies. This flexibility increases investment risk.

Investment Considerations

The Aggressive Growth Account is one of the five highest risk investments offered by Sentry to retirement plan participants. The Aggressive Growth Account invests primarily in common stocks of companies of any size, which may include larger more established companies and/or smaller emerging growth companies. Investments in emerging growth companies may be subject to more abrupt price changes than investments in larger, more established companies. The Aggressive Growth Account can be used in combination with other accounts depending on the level of risk sought by the investor.

PORTFOLIO DATA

Asset Allocation (as of 06-30-2008)     Common Stock - Domestic 67.04% Common Stock - Foreign 30.50% Preferred Stock - Domestic 0.08%   Key Facts (as of 06-30-2008)     Number of Stocks 104 Number of Bonds 0 Price/Earnings Ratio (1 year forward) 18.53x Turnover Rate Annualized (As of 10-31-2007) 96.63% Beta (vs. Russell 1000 index) 1.10 Standard Deviation as of 12-31-2007 37.89%   Top Ten Stock Holdings (as of 06-30-2008) Concentration   Range   Hess Corp. 0 %     Owens-Illinois, Inc. 0 %     Marvell Technology Group Ltd. 0 %     Cypress Semiconductor Corp. 0 %     Potash Corp. of Saskatchewan, Inc. (U.S. Shares) 0 %     Apple Computer, Inc. 0 %     Celgene Corp. 0 %     CVS/Caremark Corp. 0 %     JA Solar Holdings Co., Ltd. 0 %     Cisco Systems, Inc. 0 %     Top Ten Equals 18.72% of Portfolio   Top Sectors (as of 06-30-2008)       Consumer, Non-Cyclical 19.43 % Technology 14.58 % Communications 14.12 % Industrial 13.87 % Consumer, Cyclical 12.97 % Energy 11.14 % Financials 5.60 % Utilities 3.35 % Basic Materials 2.47 % Other 0.08 % Total % of Portfolio 97.61 % Janus Research Fund* Average Annual Returns Annual Total Returns (as of 07-31-2008) (as of 12-31)           1 Month (3.24)%     3 Months (10.77)%     YTD (16.11)%     1 year (7.37)%     3 years 6.93%     5 years 9.14%     10 years 5.21%                                     1994       15.86%     1995       33.01%     1996       17.67%     1997       11.88%     1998       58.40%     1999       96.23%     2000       (22.75)%     2001       (29.78)%     2002       (29.00)%     2003       32.11%     2004       10.77%     2005       6.82%     2006       8.65%     2007       24.52%