MDYG — State Street SPDR S&P 400 Mid Cap Growth ETF
US Mid Cap Ranked #234 of 458 tracked ETFs · Issued by State Street Investment Management
MDYG Price Performance — Growth of $10,000
Value of a $10,000 investment in MDYG over time, compared with SPY. Both lines are rebased to $10,000 on the first shared date. Based on total returns — prices are adjusted for dividends and splits, so this assumes distributions were reinvested. Hover or tap the chart for exact values.
MDYG Drawdown
The "underwater" chart: MDYG's decline from its highest prior value at each point in time. It shows how deep past losses ran and how long the fund took to recover to break-even.
What If You'd Invested in MDYG?
See what a lump sum in MDYG would have grown to, with the option to add a regular monthly contribution on top. Figures use total returns — dividends are assumed reinvested.
Past performance doesn't predict future results. Assumes contributions on the first trading day of each month, no trading costs or taxes, and reinvested distributions. History is limited to the range published in the site's daily return data.
Overview
The State Street SPDR S&P 400 Mid Cap Growth ETF (MDYG) is a US Mid Cap fund managed by State Street Investment Management. With assets under management totaling $2.92 billion and a share price of $107.97, the fund reflects significant investor adoption within its specific niche. It holds an overall rank of #234 out of 458 tracked ETFs across all categories, earning an ETFValuer grade of C with a score of 60.6 out of 100. The fund charges an expense ratio of 0.15% and offers a dividend yield of 0.57%. Being one of 14 ETFs tracked in the US Mid Cap category, MDYG positions itself as a mid-sized option among its peers. The combination of its AUM and price suggests a mature vehicle with established market presence despite its moderate ranking.
Short-term performance shows a slight decline of -0.03% over one day, followed by a recovery to +0.59% over one week. The fund experienced a pullback of -1.53% over the last month before accelerating to a +4.07% gain over three months. This upward momentum continued into the six-month period with a +9.34% return, contributing to a year-to-date gain of +15.32%. Over the past year, the fund delivered a +21.20% return, while the three-year horizon shows a cumulative return of +49.03%. The data indicates a pattern where short-term volatility gave way to sustained growth over longer holding periods.
MDYG carries a moderate volatility label and a beta of 1.04, indicating that its price movements tend to slightly exceed the broader market's fluctuations. The fund's Sharpe ratio of 0.91 suggests a reasonable risk-adjusted return profile relative to the volatility experienced. However, the maximum drawdown of -25.45% highlights the potential for significant temporary losses during market downturns. This combination of a beta above 1.0 and a substantial max drawdown implies the fund can be aggressive in both rising and falling markets. Investors should note that while the Sharpe ratio reflects positive returns per unit of risk, the magnitude of the drawdown remains a key factor in the fund's risk profile.
AI-generated summary based on the data on this page.
MDYG Top Holdings
| # | Holding | % of Net Assets | Value |
|---|---|---|---|
| 1 | State Street Global Advisors | 2.82% | $70M |
| 2 | TechnipFMC PLC | 1.71% | $43M |
| 3 | Casey's General Stores Inc | 1.66% | $41M |
| 4 | United Therapeutics Corp | 1.57% | $39M |
| 5 | Curtiss-Wright Corp | 1.54% | $38M |
| 6 | Flex Ltd | 1.48% | $37M |
| 7 | XPO Inc | 1.40% | $35M |
| 8 | Woodward Inc | 1.31% | $32M |
| 9 | Royal Gold Inc | 1.26% | $31M |
| 10 | ATI Inc | 1.21% | $30M |
Holdings as of 2026-03-31 per the fund's most recent SEC N-PORT-P filing. Top 10 holdings make up 16.0% of net assets — a rough gauge of concentration risk (the higher this figure, the more the fund's return depends on a handful of names). To see how MDYG's holdings overlap with other ETFs you own or are considering, check the Stock Overlap tool.
Which Funds Overlap With MDYG
Holding two funds that own the same companies adds cost and complexity without adding much diversification. These tracked ETFs share the most names with MDYG's top 10 — SPMD overlaps most, holding 9 of the same companies as MDYG's top 10 (14.7% of MDYG's assets).
| ETF | Name | Shared Companies | MDYG Weight | Examples |
|---|---|---|---|---|
| SPMD | State Street SPDR Portfolio S&P 400 Mid Cap ETF | 9 | 14.7% | State Street Global Advisors, TechnipFMC PLC, Casey's General Stores Inc… |
| IJH | iShares Core S&P Mid-Cap ETF | 8 | 11.9% | TechnipFMC PLC, Casey's General Stores Inc, United Therapeutics Corp… |
| VBK | Vanguard Small-Cap Growth Index Fund ETF Shares | 3 | 4.9% | TechnipFMC PLC, Casey's General Stores Inc, Curtiss-Wright Corp |
| XRT | State Street SPDR S&P Retail ETF | 2 | 4.5% | State Street Global Advisors, Casey's General Stores Inc |
| VB | Vanguard Small-Cap Index Fund ETF Shares | 2 | 3.4% | TechnipFMC PLC, Casey's General Stores Inc |
Compares the top 10 reported holdings of each fund, so it's a floor on true overlap — two S&P 500 trackers overlap ~100% even when only 10 names are listed. Use the Stock Overlap tool to search by individual company.
Market Backdrop
10-Year Treasury Yield: 4.71% (as of 2026-07-23) — The yield on 10-year US Treasury bonds — the standard "risk-free rate" benchmark used to contextualize this fund’s Sharpe ratio and returns.
CBOE Volatility Index (VIX): 18.70 (as of 2026-07-23) — A real-time gauge of expected S&P 500 volatility over the next 30 days — useful context for this fund’s own volatility label.
Federal Funds Rate: 3.63% (as of 2026-06-01) — The Federal Reserve’s target policy rate, which anchors short-term borrowing costs across the economy.
What MDYG's Fees Cost You
MDYG charges an expense ratio of 0.15% a year, deducted automatically from the fund's value. Small percentages compound into real money — adjust the figures below to see the impact on your own numbers.
Assumes a constant gross return and no additional contributions — a simplification, but it isolates exactly what the expense ratio costs. Try the full fee calculator to model contributions and compare any two funds.
MDYG Dividend Income Estimator
MDYG currently yields 0.57%. Enter an amount to see the income that implies, or set a monthly income target to see the investment it would take.
Based on the fund's current trailing yield, which varies with price and distributions — treat it as an estimate, not a guarantee. Yields are not adjusted for tax.
MDYG Liquidity, Domicile & Tax Treatment
Liquidity: Quoted bid/ask spread is 3.44% and average daily volume is 89K/day. Tighter spreads and higher volume mean lower round-trip trading costs; this is a live-market snapshot and can widen during volatile sessions. AUM of $2.92B provides ample scale, supporting tight spreads and issuer commitment to keep the fund open.
Domicile & tax treatment: MDYG is a US-domiciled, SEC-registered ('40 Act) exchange-traded fund. Dividends and capital gains distributions are reported to US investors on Form 1099-DIV, and the fund is not subject to the PFIC reporting or UCITS-specific rules that apply to Irish- or Luxembourg-domiciled funds. Non-US investors should note that US-domiciled ETFs are generally subject to 30% US withholding tax on dividends (unless reduced by treaty) and to US estate tax exposure on the position — Irish-domiciled UCITS ETFs tracking the same index often avoid both, which is why non-US residents frequently prefer the UCITS equivalent where one exists. This is general information, not tax advice — consult a tax professional for your situation.
MDYG Performance History
| Period | Return |
|---|---|
| 1-Day | -0.03% |
| 1-Week | +0.59% |
| 1-Month | -1.53% |
| 3-Month | +4.07% |
| 6-Month | +9.34% |
| YTD | +15.32% |
| 1-Year | +21.20% |
| 3-Year | +49.03% |
How MDYG Compares to Other US Mid Cap ETFs
| Rank | Grade | Ticker | Name | 1-Year | Exp. Ratio | AUM |
|---|---|---|---|---|---|---|
| #20 | B+ |
VOE | Vanguard Mid-Cap Value Index Fund ETF Shares | +22.77% | 0.05% | $37.2B |
| #78 | B |
IWS | iShares Russell Mid-Cap Value ETF | +22.96% | 0.23% | $15.6B |
| #135 | B |
SCHM | Schwab U.S. Mid-Cap ETF | +21.86% | 0.03% | $15.3B |
| #156 | B |
IJH | iShares Core S&P Mid-Cap ETF | +19.19% | 0.05% | $124B |
| #158 | B |
VO | Vanguard Mid-Cap Index Fund ETF Shares | +13.56% | 0.03% | $224B |
| #176 | C |
IWR | iShares Russell Mid-Cap ETF | +16.41% | 0.18% | $57.0B |
| #181 | C |
SPMD | State Street SPDR Portfolio S&P 400 Mid Cap ETF | +19.19% | 0.03% | $18.4B |
| #200 | C |
IJK | iShares S&P Mid-Cap 400 Growth ETF | +21.23% | 0.17% | $11.3B |
| #210 | C |
MDY | State Street SPDR S&P MIDCAP 400 ETF Trust | +18.79% | 0.23% | $28.1B |
| #234 | C |
MDYG | State Street SPDR S&P 400 Mid Cap Growth ETF | +21.20% | 0.15% | $2.92B |
| #262 | C |
IJJ | iShares S&P Mid-Cap 400 Value ETF | +16.97% | 0.18% | $8.73B |
| #291 | C |
MDYV | State Street SPDR S&P 400 Mid Cap Value ETF | +16.92% | 0.15% | $2.68B |
| #376 | C |
VOT | Vanguard Mid-Cap Growth Index Fund ETF Shares | +1.38% | 0.05% | $34.8B |
| #398 | D |
IWP | iShares Russell Mid-Cap Growth ETF | -2.93% | 0.23% | $21.6B |