Investing in U.S. small- and mid-cap (SMID) equities has historically improved investment outcomes by increasing both potential return relative to all-cap equities and efficiency with improved Sharpe and Sortino ratios over time.

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Adding APSGX to a Portfolio – The Best of Two Worlds

Portfolio Return and Volatility

High Conviction Fiera SMID September

Portfolio Risk-Adjusted Metrics

High Conviction Fiera SMID September
High Conviction Fiera SMID

Source: Fiera Capital, MSCI, Bloomberg, Fama-French Research Database. Performances in USD. As of September 30, 2023.

It is not possible to invest directly in an index. Past performance is no guarantee of future results, which will vary. 

Click on the "Explore APSGX" button above for the most current fund page, which includes, the prospectus, investment objectives, performance, risk, and other important information. Returns represent past performance which is no guarantee of future results. Current performance may be lower or higher. Investment return and principal value will fluctuate, and shares, when redeemed, may be worth more or less than their original cost. Visit or and for the most recent month-end performance.


Consider MainStay Fiera SMID Growth Fund

A focus on global secular trends
Proprietary investment process combines bottom-up fundamental stock selection with top-down global secular trends.

A dynamic combination
Portfolio construction consists of a dynamic combination of stable and emerging growth companies.

A disciplined approach
A disciplined, consistent, and repeatable process over multiple economic cycles.


Sharpe ratio is a measure of risk-adjusted performance.

Sortino ratio measures the risk-adjusted return of an investment asset, portfolio, or strategy. It considers downside deviation as volatility.

Volatility (Vol) is a statistical measure of the dispersion of returns for a given security or market index


Before considering an investment in the Fund, you should understand that you could lose money.

Securities of small-cap and mid-cap companies may be subject to greater price volatility, significantly lower trading volumes, cyclical, static or moderate growth prospects and greater spreads between their bid and ask prices than securities of larger companies.

Growth stocks may be more volatile than other stocks because they are generally more sensitive to investor perceptions and market moves. During periods of growth stock underperformance, a fund’s performance may suffer.

Foreign securities can be subject to greater risks than U.S. investments, including currency fluctuations, less liquid trading markets, greater price volatility, political and economic instability, less publicly available information, and changes in tax or currency laws or monetary policy.