Class Y Prospectus | RS Large Cap Alpha Fund

RS Large Cap Alpha Fund

Investment Objective

Long-term capital appreciation.

Fees and Expenses of the Fund

The table below describes the fees and expenses that you may pay if you buy and hold shares of the Fund. No sales loads are imposed on Class Y shares.

Annual Fund Operating Expenses (expenses are deducted from Fund assets as a percentage of average daily net assets)

Annual Fund Operating Expenses		Class Y Prospectus RS Large Cap Alpha Fund Class Y
Management Fees		0.50%
Distribution (12b-1) Fees
Other Expenses		0.19%
Total Annual Fund Operating Expenses	[1]	0.69%
Fee Waiver/Expense Reimbursement	[1]	none
Total Annual Fund Operating Expenses After Fee Waiver/Expense Reimbursement	[1]	0.69%

Example

This Example is intended to help you compare the cost of investing in the Fund with the costs of investing in other mutual funds. The Example assumes that you invest $10,000 in the Fund for the time periods indicated, whether or not you redeem at the end of such periods. This Example also assumes that your investment earns a 5% return each year and that the Fund’s operating expenses remain the same as shown above. Although your actual costs may be higher or lower, based on these assumptions, your costs would be:

Expense Example (USD $)	Class Y Prospectus RS Large Cap Alpha Fund Class Y
1 Year	70
3 Years	221
5 Years	384
10 Years	859

Expense Example, No Redemption (USD $)	Class Y Prospectus RS Large Cap Alpha Fund Class Y
1 Year	70
3 Years	221
5 Years	384
10 Years	859

Portfolio Turnover

The Fund pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes for you if your Fund shares are held in a taxable account. These costs, which are not reflected in annual fund operating expenses or in the Example, affect the Fund’s performance. During the most recent fiscal year, the Fund’s portfolio turnover rate was 51% of the average value of its portfolio.

Investments, Risks, and Performance
Principal Investment Strategies

The Fund normally invests at least 80% of its net assets in companies considered by the Fund’s investment team (at the time of purchase) to be large-capitalization companies. The Fund’s investment team considers a company to be large-capitalization if its market capitalization is between $5 billion and the market capitalization of the largest company included in the Russell 1000^® Index on the last day of the most recent quarter (currently, approximately $415.7 billion, based on the size of the largest company in the Index on March 31, 2013). The Fund’s investment team currently expects that the Fund typically will hold between 35 and 45 securities positions.

In evaluating investments for the Fund, the Fund’s investment team conducts fundamental research to identify companies with improving returns on invested capital. The investment team’s research efforts seek to identify the primary economic and value drivers for each company. Research focuses on a company’s capital deployment strategy, including decisions about capital expenditures, acquisitions, cost-saving initiatives, and share repurchase/dividend plans, as the Fund’s investment team seeks to understand how returns on invested capital may improve over time. Valuation is considered an important part of the process. The investment team seeks to invest in companies based on the investment team’s assessment of risk (the possibility of permanent capital impairment) and its assessment of reward (the future value of the enterprise).

The Fund may at times, but will not necessarily, hold a substantial portion of its assets in cash and cash equivalents.

The Fund will typically invest principally in equity securities. The Fund may at times, but will not necessarily, invest a substantial portion of its assets in securities of companies that the investment team considers to be principally engaged in natural resources industries.

Companies in natural resources industries include companies that the Fund’s investment team considers to be principally engaged in the discovery, development, production, or distribution of natural resources; the development of technologies for the production or efficient use of natural resources; or the furnishing of related supplies or services. The Fund typically invests most of its assets in securities of U.S. companies but may also invest any portion of its assets in foreign securities.

Principal Risks

You may lose money by investing in the Fund. The Fund may not achieve its investment objective. The principal risks of investing in the Fund, which could adversely affect its net asset value and total return, are as follows.

Equity Securities Risk
The value of a company’s stock may decline in response to factors affecting that particular company or stock markets generally.

Investment Style Risk
A mutual fund investing principally in value style stocks may at times underperform other mutual funds that invest more broadly or that have different investment styles.

Overweighting Risk
Overweighting investments in an industry or group of industries relative to the Fund’s primary benchmark increases the risk that the Fund will underperform its primary benchmark because a general decline in the prices of stocks in that industry or group of industries will affect the Fund to a greater extent than its primary benchmark.

Underweighting Risk
If the Fund underweights its investment in an industry or group of industries relative to the Fund’s primary benchmark, the Fund will participate in any general increase in the value of companies in that industry or group of industries to a lesser extent than the Fund’s primary benchmark.

Foreign Securities Risk
Foreign securities are subject to political, regulatory, and economic risks not present in domestic investments. In addition, when the Fund buys securities denominated in a foreign currency, there are special risks such as changes in currency exchange rates and the risk that a foreign government could regulate foreign exchange transactions. In addition, to the extent that investments are made in a limited number of countries, events in those countries will have a more significant impact on the Fund.

Cash Position Risk
To the extent that the Fund holds assets in cash and cash equivalents and not in the investments previously described, the ability of the Fund to meet its objective may be limited.

Liquidity Risk
Lack of a ready market or restrictions on resale may limit the ability of the Fund to sell a security at an advantageous time or price. In addition, the Fund, by itself or together with other accounts managed by RS Investments, may hold a position in a security that is large relative to the typical trading volume for that security, which can make it difficult for the Fund to dispose of the position at an advantageous time or price.

Natural Resources Investment Risk
Investment in companies in natural resources industries can be significantly affected by (often rapid) changes in supply of, or demand for, various natural resources. They may also be affected by changes in energy prices, international political and economic developments, environmental incidents, energy conservation, the success of exploration projects, changes in commodity prices, and tax and other government regulations. Investments in interests in oil, gas or mineral exploration or development programs, including pipelines, may be held through master limited partnerships (“MLPs”), which are generally subject to many of the risks that apply to partnerships and may also be subject to certain tax risks.

Limited Portfolio Risk
To the extent the Fund invests its assets in a more limited number of issuers than many other mutual funds, a decline in the market value of a particular security may affect the Fund’s value more than if the Fund invested in a larger number of issuers.

Mid-sized Companies Risk
Mid-sized companies may be subject to a number of risks not associated with larger, more established companies, potentially making their stock prices more volatile and increasing the risk of loss.

Fund Performance

The bar chart and table provide some indication of the risks of investing in the Fund by showing changes in the Fund’s performance from year to year and by showing how the Fund’s average annual returns for 1, 5, and 10 years and since inception compare with those of two broad measures of market performance. The Fund’s investment strategy and investment team changed on March 30, 2009. The Fund’s past performance (before and after taxes) is not an indication of future performance. Updated performance information for the Fund is available at www.rsinvestments.com or by calling 800-766-3863.

Annual Total Return for Class Y Shares (calendar year-end)

Best Quarter  Third Quarter 2009  17.50%            Worst Quarter  Third Quarter 2011  -20.70%

Average Annual Total Returns(periods ended 12/31/12)

Average Annual Total Returns Class Y Prospectus RS Large Cap Alpha Fund	1 Year	5 Years	10 Years		Since Inception		Inception Date
Class Y Shares	16.58%	2.01%	7.02%	[1]	11.53%	[1]	Jun. 01, 1972
Class Y Shares Return After Taxes on Distributions	15.75%	1.54%	6.58%	[1]		[1]	Jun. 01, 1972
Class Y Shares Return After Taxes on Distributions and Sale of Fund Shares	10.77%	1.43%	5.90%	[1]		[1]	Jun. 01, 1972
Russell 1000® Value Index (reflects no deduction for fees, expenses or taxes)	17.51%	0.59%	7.38%	[1]		[1],[2]	Jun. 01, 1972
S&P 500® Index (reflects no deduction for fees, expenses or taxes)	16.00%	1.66%	7.10%	[1]	9.86%	[1],[3]	May 31, 1972

After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. Actual after-tax returns depend on an investor’s tax situation and may differ from those shown. After-tax returns shown are not relevant to investors who hold their Fund shares through tax-deferred arrangements such as 401(k) plans or individual retirement accounts.

The Fund commenced investment operations June 1, 1972, with the offering of Class A shares, and subsequently offered Class Y shares on May 1, 2007. Performance shown for Class Y shares reflects the performance of the Fund’s Class A shares for periods through the Class Y shares’ offering. Blended class performance has been adjusted to take into account differences in sales load applicable to these share classes (Class A shares charge a sales load and Class Y shares do not charge a sales load), but has not been adjusted to take into account differences in class-specific operating expenses (such as Rule 12b-1 fees; Class A shares pay a 12b-1 fee of 0.25% and Class Y shares do not pay a 12b-1 fee). Because Class Y shares’ operating expenses are lower than Class A shares’ historical operating expenses, historical performance of Class A shares is likely lower than what the performance of Class Y shares would have been during that period.

[1] RS Investments has contractually agreed to limit the Total Annual Fund Operating Expenses for Class Y Shares so that Class Y benefits from a level of reimbursement (as expressed in basis points) that is the same as the level of reimbursement for Class A shares during the period. This expense limitation will continue through April 30, 2014 and cannot be terminated by RS Investments prior to that date without the action or consent of the Fund's Board of Trustees.

[1] Returns for the periods through May 1, 2007 reflect performance of the Fund's Class A shares. Class A shares represent an investment in the same portfolio of securities as Class Y shares. Annual returns for Class A and Class Y shares differ to the extent Class Y shares do not have the same expenses as Class A shares.

[1] Returns for the periods through May 1, 2007 reflect performance of the Fund's Class A shares. Class A shares represent an investment in the same portfolio of securities as Class Y shares. Annual returns for Class A and Class Y shares differ to the extent Class Y shares do not have the same expenses as Class A shares.

[2] No since inception performance return is shown for the Russell 1000® Value Index because the inception date of the Class A shares was prior to the inception date of the Russell 1000® Value Index.

[3] Since inception return for the S&P 500® Index shown in the table is since May 31, 1972, the month end prior to the inception of Class A shares.