Should SPDR S&P 400 Mid Cap Growth ETF (MDYG) Be on Your Investing Radar?

The SPDR S&P 400 Mid Cap Growth ETF (MDYG), with $2.18 billion in assets and a 0.15% expense ratio, offers exposure to U.S. mid-cap growth stocks, primarily in the industrials sector (27.10%). MDYG, which has a Zacks ETF Rank of 2 (Buy), seeks to replicate the S&P MidCap 400 Growth Index; however, the ETF is down approximately -3.78% YTD and -0.90% over the past year as of May 26, 2025.

Analysis

The SPDR S&P 400 Mid Cap Growth ETF (MDYG) offers investors exposure to the U.S. mid-cap growth segment by passively tracking the S&P MidCap 400 Growth Index. With $2.18 billion in assets under management, MDYG is an average-sized ETF in its category, launched on November 8, 2005, and sponsored by State Street Global Advisors. Mid-cap companies, typically capitalized between $2 billion and $10 billion, are positioned for higher growth than large-caps while being less risky than small-caps, though growth stocks inherently carry higher valuations and volatility. MDYG features a competitive annual expense ratio of 0.15% and a 12-month trailing dividend yield of 0.92%. The ETF's portfolio is most heavily weighted towards the Industrials sector, at approximately 27.10%, followed by Financials and Consumer Discretionary. Key individual holdings include Emcor Group Inc (1.40%), Interactive Brokers Gro Cl A, and Okta Inc, with the top 10 holdings constituting about 12.67% of total assets. Despite a Zacks ETF Rank of 2 (Buy), indicating a positive outlook based on factors like expected asset class return and momentum, MDYG has experienced negative performance recently, with a year-to-date loss of approximately -3.78% and a -0.90% decline over the past year as of May 26, 2025. The ETF has traded between $70.44 and $94.90 over the past 52 weeks. Its risk profile is characterized by a beta of 1.08 and a three-year standard deviation of 21.05%, classifying it as a medium-risk investment within its peer group; however, its 242 holdings provide substantial company-specific risk diversification. Alternative ETFs in this space include the Vanguard Mid-Cap Growth ETF (VOT) with $15.86 billion in assets and a 0.07% expense ratio, and the iShares Russell Mid-Cap Growth ETF (IWP) with $18.14 billion in assets and a 0.23% expense ratio.

Key Decisions for Investors

• Investors seeking mid-cap growth exposure might consider MDYG due to its 'Buy' rating from Zacks, low expense ratio of 0.15%, and diversified holdings, making it a potentially suitable option for long-term portfolios.
• Despite the positive rating, investors should note MDYG's recent underperformance, with a -3.78% YTD return and -0.90% over the last year, and acknowledge the inherent higher volatility (beta 1.08) associated with growth stocks, which may underperform value stocks outside of strong bull markets.
• Before investing, compare MDYG with alternatives like VOT, which offers a significantly lower expense ratio (0.07%) and larger AUM, and IWP, which also has substantially more assets, to determine the optimal fit for individual risk tolerance and cost sensitivity.
• Consider the significant allocation to the Industrials sector (27.10%) within MDYG and assess whether this concentration aligns with your broader market outlook and sector allocation strategy.