Key Characteristics as of 3/31/12

Top Ten Holdings1
Southwestern Energy Co. 5.35%
Compass Minerals International, Inc. 4.54%
Tullow Oil PLC 4.24%
Oil Search Ltd. 4.18%
Peyto Exploration & Development Corp. 3.91%
Talisman Energy, Inc. 3.83%
Denbury Resources, Inc. 3.83%
Peabody Energy Corp. 3.78%
Calpine Corp. 3.77%
Martin Marietta Materials, Inc. 3.68%
Total 41.12%
View Full Quarterly Holdings

Characteristics
Weighted Average Market Capitalization $16,748(mil)
Alpha2* 2.97
Beta2* 0.92
R-Squared2* 0.96
Information Ratio2* 0.38
Sharpe Ratio2* 0.96
Portfolio Turnover Ratio - Most Recent Annual 25
Number of Positions 31
Sector Allocations3
Energy 49.5%
Materials and Processing 34.3%
Utilities 3.8%
Financial Services 1.1%
Consumer Discretionary 0.0%
Consumer Staples 0.0%
Health Care 0.0%
Producer Durables 0.0%
Technology 0.0%
Other Securities 0.0%
Cash 11.3%
As with all mutual funds, the value of an investment in the Fund could decline, so you could lose money. Investing in small- and mid-size companies can involve risks such as having less publicly available information, higher volatility, and less liquidity than in the case of larger companies. Funds that concentrate investments in a certain sector may be subject to greater risk than funds that invest more broadly, as companies in that sector may share common characteristics and may react similarly to market developments or other factors affecting their values. Investments in companies in natural resources industries may involve risks including changes in commodities prices, changes in demand for various natural resources, changes in energy prices, and international political and economic developments. Foreign securities are subject to political, regulatory, economic, and exchange-rate risks not present in domestic investments. The value of a debt security is affected by changes in interest rates and is subject to any credit risk of the issuer or guarantor of the security.

1 Portfolio holdings are subject to change and should not be considered a recommendation to buy or sell individual securities.

2 Risk characteristics are relative to the S&P North American Natural Resources Sector Index™ as of 3/31/12, and for the three-year period. (Other than Sharpe Ratio which is calculated relative to the risk-free rate.)

3 The Fund's holdings are allocated to each sector based on their Russell classification. If a holding is not classified by Russell, it is assigned a Russell designation by RS Investments. Cash includes short-term investments and net other assets and liabilities.

* Alpha (annualized) is a statistical measurement used to quantify the value added or subtracted by a portfolio manager. Specifically, alpha measures the portfolio's actual return against the portfolio's expected return given the risk of the portfolio as defined by its beta.

* Beta is a statistical measurement of a portfolio's relative sensativity to the benchmark, which acts as a proxy for market risk. The beta between a portfolio and its benchmark is the amount of the units the portfolio will move when the benchmark moves one unit.

* R2 is a statistical measurement that shows the percentage of a portfolio's movements that can be explained by the movement in the benchmark. The numerical value of a portfolio's R2 is always between 0 and 1. An R2 of 1 (or 100%) means that there is perfect correlation in the movement between the portfolio and the benchmark.

* Information Ratio is a measure of the value added per unit of active risk by a manager over the benchmark. The Information Ratio is calculated by dividing the annualized excess return over a benchmark by the annualized standard deviation of excess return.

* Sharpe Ratio is a statistical measurement of the risk-adjusted performance of the portfolio. The ratio is calculated by dividing a portfolio's excess return over the risk-free rate (generally a 3-month T-bill) by the standard deviation of its excess returns. This approximates a portfolio's reward per unit of risk.

You should read the current RS Funds' Prospectus before investing. The RS Funds' Statement of Additional Information (SAI)  provides information about the Funds that may not be contained in the Prospectus.

RS Funds are sold by Prospectus only. You should carefully consider the investment objectives, risks, charges, and expenses of the RS Funds before making an investment decision. The prospectus contains this and other important information. Please read it carefully before investing or sending money. To obtain a printed copy, please call 800-766-3863.

If you are an existing shareholder and would like a copy of the prospectus or need to contact RS Investments, call 800-766-3863. If you are interested in learning more about and how to invest with RS, please contact your financial professional.

The information on this web site is intended for U.S. residents only. The information provided does not constitute a solicitation of an offer to buy, or an offer to sell securities in any jurisdiction to any person to whom it is not lawful to make such an offer.

RS Funds are distributed by: Guardian Investor Services LLC, 7 Hanover Square, New York, NY 10004.

RS is an independent subsidiary of Guardian Investor Services LLC. Guardian Investor Services LLC (GIS), is a registered broker-dealer, registered investment advisor, and a wholly owned subsidiary of The Guardian Life Insurance Company of America.

Not A Deposit / Not FDIC or NCUA Insured / May Lose Value / No Bank or Credit Union Guarantee

GIS is a member: FINRA and SIPC.

© 2012 RS Investment Management Co. LLC
RS Investments is the marketing name for RS Investment Management Co. LLC and its affiliates.