MDYG — State Street SPDR S&P 400 Mid Cap Growth ETF
US Mid Cap Ranked #310 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 is a US Mid Cap fund managed by State Street Investment Management with $2.85 billion in assets. It holds an overall rank of #310 out of 458 tracked ETFs and sits at #11 of 14 within its specific category. The fund carries an ETFValuer grade of C, reflecting a score of 55.3 out of 100. Its expense ratio of 0.15% aligns exactly with the category median, while its dividend yield of 0.59% trails the category median of 0.97%. Top holdings constitute 16.5% of assets, with the largest single position being State Street Global Advisors at 3.4%.
The fund's price of $108.32 places it at 79.1% of its 52-week range, indicating a position near the upper end of recent trading levels. Short-term performance shows a divergence, with a 1-day gain of +0.14% contrasting against a 1-week decline of -0.13% and a 1-month drop of -1.43%. Over longer horizons, the trend is positive, evidenced by a 1-year return of +18.89% which exceeds the category median of +16.92%. Year-to-date returns stand at +15.70%, while the 3-year total return is +55.93%. The ETFValuer grade has remained unchanged at C across the last 35 tracked days, and price history data is available for 3.0 years.
With a beta of 1.04, the fund exhibits slightly higher sensitivity to market movements than the broader market. Annualized volatility is recorded at 17.85%, which is labeled as Moderate, while the maximum drawdown has reached -25.45%. A Sharpe ratio of 0.78 suggests a moderate risk-adjusted return profile relative to the risk taken. Liquidity metrics show an average daily volume of 82,693 shares and a bid/ask spread of 2.78%, indicating the cost of trading. These figures collectively describe the fund's historical behavior regarding price stability and trading efficiency.
AI-generated summary based on the data on this page.
MDYG Top Holdings
| # | Holding | % of Net Assets | Value |
|---|---|---|---|
| 1 | State Street Global Advisors | 3.43% | $100M |
| 2 | Twilio Inc | 1.66% | $48M |
| 3 | Carpenter Technology Corp | 1.62% | $47M |
| 4 | Curtiss-Wright Corp | 1.48% | $43M |
| 5 | nVent Electric PLC | 1.45% | $42M |
| 6 | ATI Inc | 1.42% | $42M |
| 7 | TechnipFMC PLC | 1.40% | $41M |
| 8 | Sterling Infrastructure Inc | 1.36% | $40M |
| 9 | MasTec Inc | 1.36% | $40M |
| 10 | Woodward Inc | 1.34% | $39M |
Holdings as of 2026-06-30 per the fund's most recent SEC N-PORT-P filing. Top 10 holdings make up 16.5% 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 — IJK overlaps most, holding 9 of the same companies as MDYG's top 10 (13.1% of MDYG's assets).
| ETF | Name | Shared Companies | MDYG Weight | Examples |
|---|---|---|---|---|
| IJK | iShares S&P Mid-Cap 400 Growth ETF | 9 | 13.1% | Twilio Inc, Carpenter Technology Corp, Curtiss-Wright Corp… |
| SPMD | State Street SPDR Portfolio S&P 400 Mid Cap ETF | 7 | 12.5% | State Street Global Advisors, Twilio Inc, Carpenter Technology Corp… |
| IJH | iShares Core S&P Mid-Cap ETF | 6 | 9.0% | Twilio Inc, Carpenter Technology Corp, Curtiss-Wright Corp… |
| XAR | State Street SPDR S&P Aerospace & Defense ETF | 3 | 6.4% | State Street Global Advisors, Carpenter Technology Corp, Woodward Inc |
| VBK | Vanguard Morningstar Small-Cap Growth ETF | 3 | 4.8% | Twilio Inc, Carpenter Technology Corp, Curtiss-Wright Corp |
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: 4.77% (as of 2026-09-03) — 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): 14.32 (as of 2026-09-03) — 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 2026-08-01) — 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 0.59%. 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 2.78% and average daily volume is 83K/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 $2.85B 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 | +0.14% |
| 1-Week | -0.13% |
| 1-Month | -1.43% |
| 3-Month | +1.20% |
| 6-Month | +12.32% |
| YTD | +15.70% |
| 1-Year | +18.89% |
| 3-Year | +55.93% |
How MDYG Compares to Other US Mid Cap ETFs
| Rank | Grade | Ticker | Name | 1-Year | Exp. Ratio | AUM |
|---|---|---|---|---|---|---|
| #31 | B+ |
VOE | Vanguard Morningstar Mid-Cap Value ETF | +23.25% | 0.05% | $38.9B |
| #93 | B |
IWS | iShares Russell Mid-Cap Value ETF | +24.55% | 0.23% | $15.7B |
| #155 | B |
VO | Vanguard Morningstar Mid-Cap ETF | +15.25% | 0.03% | $225B |
| #179 | B |
SCHM | Schwab U.S. Mid-Cap ETF | +22.47% | 0.03% | $14.9B |
| #191 | B |
IWR | iShares Russell Mid-Cap ETF | +17.82% | 0.18% | $56.8B |
| #211 | C |
IJH | iShares Core S&P Mid-Cap ETF | +16.90% | 0.05% | $125B |
| #230 | C |
SPMD | State Street SPDR Portfolio S&P 400 Mid Cap ETF | +16.95% | 0.03% | $18.6B |
| #266 | C |
MDY | State Street SPDR S&P MIDCAP 400 ETF Trust | +16.54% | 0.23% | $26.3B |
| #281 | C |
IJK | iShares S&P Mid-Cap 400 Growth ETF | +18.70% | 0.16% | $10.7B |
| #295 | C |
IJJ | iShares S&P Mid-Cap 400 Value ETF | +14.66% | 0.18% | $8.78B |
| #310 | C |
MDYG | State Street SPDR S&P 400 Mid Cap Growth ETF | +18.89% | 0.15% | $2.85B |
| #318 | C |
MDYV | State Street SPDR S&P 400 Mid Cap Value ETF | +14.84% | 0.15% | $2.81B |
| #332 | C |
VOT | Vanguard Morningstar Mid-Cap Growth ETF | +4.51% | 0.05% | $34.0B |
| #406 | D |
IWP | iShares Russell Mid-Cap Growth ETF | -1.82% | 0.23% | $19.8B |