MDYG Performance — State Street(R) SPDR(R) S & P 400(TM) Mid Cap Growth ETF
Data updated: 2026-09-11
MDYG returned +21.48% year to date and +29.82% over one year to Jun 2026. Annualised returns are +17.06% over 3 years and +8.69% over 5 years. The fund beat its US Mid-Cap Growth category average: $100 invested three years ago grew to $160, against $152 for the category, and to $130 over one year, against $118. Volatility over the past three years was 16.24% a year. In the 12 months to Jun 2026 the fund took in a net $2.5M, and assets reached $2.92B.
MDYG Growth of $100
What $100 invested in State Street(R) SPDR(R) S & P 400(TM) Mid Cap Growth ETF grew to, compounded from monthly returns reported on SEC Form N-PORT, against the US Mid-Cap Growth category average over the same months.
| Period | MDYG | Category average |
|---|---|---|
| 1 year (Jul 2025 – Jun 2026) | $130 | $118 |
| 3 years (Jul 2023 – Jun 2026) | $160 | $152 |
| 5 years (Jul 2021 – Jun 2026) | $152 | $129 |
| Since data start (Jul 2019 – Jun 2026) | $221 | $203 |
MDYG Trailing Returns
Total returns to Jun 2026, from SEC N-PORT.
| Period | Total return |
|---|---|
| YTD | +21.48% |
| 1 year | +29.82% |
| 3 years (annualised) | +17.06% |
| 5 years (annualised) | +8.69% |
MDYG Annual Returns
Calendar-year total returns of State Street(R) SPDR(R) S & P 400(TM) Mid Cap Growth ETF, compounded from monthly SEC N-PORT returns. Partial years show the months covered.
| Year | Total return |
|---|---|
| 2026 (Jan–Jun) | +21.48% |
| 2025 | +7.29% |
| 2024 | +15.76% |
| 2023 | +17.31% |
| 2022 | −19.03% |
| 2021 | +18.73% |
| 2020 | +22.44% |
| 2019 (Jul–Dec) | +5.98% |
MDYG Monthly Returns
Monthly total returns as reported on SEC Form N-PORT.
| Year | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2026 | +4.0% | +5.8% | −5.5% | +8.1% | +4.9% | +3.1% | — | — | — | — | — | — |
| 2025 | +3.7% | −5.6% | −6.5% | −0.2% | +6.2% | +3.4% | +2.1% | +2.3% | +1.0% | +0.3% | +1.1% | −0.2% |
| 2024 | −0.4% | +9.7% | +5.7% | −6.0% | +4.1% | −1.3% | +4.2% | −0.8% | +1.1% | −1.3% | +8.8% | −7.6% |
| 2023 | +7.1% | −0.8% | −1.1% | −0.5% | −2.8% | +8.7% | +3.8% | −2.1% | −4.8% | −4.9% | +7.6% | +7.4% |
| 2022 | −10.4% | +1.0% | +0.5% | −7.6% | −0.8% | −10.0% | +12.7% | −3.4% | −8.8% | +9.4% | +5.7% | −6.0% |
| 2021 | +1.8% | +4.1% | +2.4% | +4.1% | −1.8% | +1.1% | +0.9% | +1.4% | −4.3% | +7.5% | −3.6% | +4.1% |
| 2020 | −1.2% | −8.5% | −16.8% | +14.0% | +8.9% | +1.4% | +6.1% | +3.2% | −2.4% | +1.1% | +12.4% | +6.4% |
| 2019 | — | — | — | — | — | — | +1.2% | −3.1% | +1.3% | +0.9% | +3.1% | +2.5% |
MDYG Risk
Risk measures from monthly returns over Jul 2023 – Jun 2026.
- 3-year volatility (annualised): 16.24%
- 3-year Sharpe ratio: 0.77 (vs 4.5% risk-free rate)
- Best month: +9.68% (Feb 2024)
- Worst month: −7.57% (Dec 2024)
MDYG Fund Flows
Monthly money in and out of State Street(R) SPDR(R) S & P 400(TM) Mid Cap Growth ETF, from SEC Form N-PORT.
- 12-month net flow: $2.5M
- 12-month gross sales (incl. reinvestments): $330.5M
- Sales ÷ redemptions: 1.01×
| Month | Sales | Redemptions | Net flow |
|---|---|---|---|
| Jun 2026 | $126.4M | $121.2M | $5.2M |
| May 2026 | $26.9M | $16.0M | $10.8M |
| Apr 2026 | $30.7M | $20.4M | $10.3M |
| Mar 2026 | $9.8M | $19.4M | −$9.7M |
| Feb 2026 | $10.2M | $4.8M | $5.4M |
| Jan 2026 | $9.9M | $63.8M | −$53.9M |
| Dec 2025 | $13.9M | $4.7M | $9.2M |
| Nov 2025 | $22.5M | $4.5M | $18.0M |
| Oct 2025 | $22.7M | $50.6M | −$27.8M |
| Sep 2025 | $4.7M | $13.8M | −$9.2M |
| Aug 2025 | $17.5M | $4.4M | $13.1M |
| Jul 2025 | $35.5M | $4.4M | $31.1M |
MDYG Assets Under Management
Net assets of State Street(R) SPDR(R) S & P 400(TM) Mid Cap Growth ETF by report date, from SEC N-PORT filings.
| Report date | Net assets |
|---|---|
| 2026-06-30 | $2.92B |
| 2026-03-31 | $2.48B |
| 2025-12-31 | $2.45B |
| 2025-09-30 | $2.42B |
| 2025-06-30 | $2.26B |
| 2025-03-31 | $2.49B |
| 2024-12-31 | $2.76B |
| 2024-09-30 | $2.71B |
| 2024-06-30 | $2.46B |
| 2024-03-31 | $3.03B |
| 2023-12-31 | $2.28B |
| 2023-09-30 | $1.82B |
For information only. Not investment advice: figures are as reported in SEC filings and may contain errors or be out of date. Past performance does not guarantee future results.