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MDYvsSMOXETF Comparison
SPDR S&P MIDCAP 400 ETF Trust (MDY) belongs to the US Mid Cap segment. Horizon Small/Mid Cap Core Equity ETF (SMOX) is part of the Options Strategies segment. Both ETFs have the same top 3 sector exposures: Industrials, Financials and Information Technology. MDY is less expensive with a Total Expense Ratio (TER) of 0.23%, versus 0.75% for SMOX. MDY is up 3.55% year-to-date (YTD) with -$767M in YTD flows. SMOX performs better with 4.48% YTD performance, and -$1M in YTD flows. Run a side-by-side ETF comparison of MDY and SMOX below, and assess how they stack up in performance, liquidity, risk, exposure, holdings, and more, helping you select the best ETF for your investments.
MDY vs SMOX performance and flow charts
Performance
Cumulative Flows
| 1M | 3M | YTD | 1Y | 3Y | 5Y | ||
|---|---|---|---|---|---|---|---|
| Perf. | MDY SMOX | -4.44%-3.90% | +0.94%+3.38% | +3.55%+4.48% | +18.83%n/a | +47.42%n/a | +38.92%n/a |
| Flows | MDY SMOX | +$62M-$558K | -$243M-$580K | -$767M-$1M | -$1.70B- | -$1.13B- | -$2.30B- |
| 3M | 1Y | 3Y | 5Y | ||
|---|---|---|---|---|---|
| Volatility | MDY SMOX | +15.01%+14.39% | +20.79%n/a | +18.01%n/a | +19.83%n/a |
| Max drawdown | MDY SMOX | -5.36%-6.26% | -15.01%n/a | -23.91%n/a | -23.91%n/a |
| Max drawdown duration | MDY SMOX | 17d10d | 46dn/a | 379dn/a | 379dn/a |
MDY | SMOX | |
Last sale 3/13/2026 at 3:05 PM | $609.86 | $26.28 |
| Previous close 03/12/2026 | $611.77 | $26.28 |
| Consolidated volume 03/12/2026 | ||
| Average volume 30 days | ||
| Average discount or premium 30 days | ||
| Average Bid/Ask spread 30 days |
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MDY | SMOX | |
|---|---|---|
| Tracking error | ||
| Tracking difference | ||
| 1 year cumulative return difference | ||
| Best | ||
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MDY | SMOX | |
|---|---|---|
| Last price | $609.86 | $26.28 |
| 1D performance | -0.31% | +0.00% |
| AuM | $24.28 B | $53.10 M |
| E/R | 0.23% | 0.75% |
MDY | SMOX | |
|---|---|---|
| Management strategy | Passive | Active |
| Provider | SPDR | Horizon Investments |
| Benchmark | S&P MidCap 400 Index | - |
| N° of holdings | 382 | 274 |
| Asset class | Equities | - |
| Trailing 12m distribution yield | Join | Join |
| Inception date | May 4, 1995 | December 3, 2025 |
| ESG | No | No |
Countries
Sectors
Diversification
Total weight of top 15 holdings out of 15
Total weight of top 15 holdings out of 15
Top 15 holdings
How have the MDY and SMOX ETFs performed in 2026?
As of March 11, 2026, MDY is up 3.55% year-to-date (YTD), while SMOX has returned 4.48%. That puts SMOX better performer ahead so far this year.
Which ETF is attracting more investor money: MDY or SMOX?
Year-to-date, the MDY ETF saw -$767M in flows, compared to -$1M for SMOX.
Which ETF is bigger: MDY or SMOX?
As of March 11, 2026, MDY holds $24.28 B in assets under management (AUM), while SMOX manages $53.10 M.
What sectors do the MDY and SMOX ETFs invest in?
MDY leans toward sectors like Industrials, Financials and Information Technology. Meanwhile, SMOX focuses on Industrials, Financials and Information Technology.
What are the top holdings of the MDY ETF and SMOX ETF?
MDY top holdings include CIENA, US19247G1076 and LUMENTUM HOLDINGS. SMOX holds in its top three: US80004C2008, COMFORT SYSTEMS USA and CIENA.
Which ETF is more diversified: MDY or SMOX?
MDY holds 399 securities with 10.49% of its assets in the top 15. SMOX has 286 securities and a top 15 weight of 16.62%.
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