Data as of Oct 28, 2026.
DIA vs MDY: Differences, Returns & Fees
Over the year to Oct 28, 2026, DIA returned +11.6% to MDY's +12.8%; 0% of their weight is in the same names.
askIQ about this page
askIQ about DIA and MDY
Net assets on Oct 27, 2026: $45.9bn for SPDR Dow Jones Industrial Average ETF Trust and $25.9bn for SPDR S&P MidCap 400 ETF Trust.
Pair scorecard
DIA costs 0.07 points a year less; their one-year returns differ by 1.2 points; DIA is 1.8 times larger.
| Measure | DIA | MDY |
|---|---|---|
| Return | ||
| Total return, 1 year | +11.6% | +12.8% |
| Drawdown | ||
| Below its high | 3.0%, high on Aug 5, 2026 | 6.5%, high on Aug 14, 2026 |
| Benchmark | ||
| What it tracks | Dow Jones Industrial Average | S&P MidCap 400 Index |
| Cost and size | ||
| Expense ratio | 0.16% | 0.23% |
| Net assets, as of Oct 27, 2026 | $45.9bn | $25.9bn |
| Holdings | ||
| Holdings in common | 0% | |
| Top ten holdings, share of the fund | 54.7% | 7.5% |
Holdings in common uses holdings dated Oct 27, 2026. Method
Risk and return
Jan 30, 1998 to Oct 23, 2026 · 1,499 weekly returnsMDY returned more: +1,426.6% to +1,095.9%. DIA swung less: 17.2% to 20.6%. DIA fell slightly less at its worst: −50.9% to −54.9%.
Full scorecard
9 measures, with how each is measured Open ↓
| Measure | DIA | MDY | Edge | How it is measured |
|---|---|---|---|---|
| Return | ||||
| Total return | +1,095.9% | +1,426.6% | MDY | Price change plus distributions, reinvested. |
| Annualized | +9.0% | +9.9% | MDY (slight) | Total return as a yearly rate. |
| Price return | +558.0% | +945.2% | MDY | Price change alone, distributions left out. |
| Risk | ||||
| Volatility | 17.2% | 20.6% | DIA | Spread of weekly returns, annualized. Lower is steadier. |
| Downside deviation | 12.2% | 14.5% | DIA | Like volatility, counting only weeks below the Treasury bill rate. |
| Max drawdown | −50.9% | −54.9% | DIA (slight) | Deepest fall from a high to the low after it. |
| Risk-adjusted | ||||
| Sharpe | 0.48 | 0.48 | Tie | Return above Treasury bills per unit of volatility. |
| Sortino | 0.68 | 0.68 | Tie | Return above Treasury bills per unit of downside deviation. |
| Calmar | 0.18 | 0.18 | MDY (slight) | Annualized return divided by the max drawdown. |
Computed by ETFIQ from Tiingo daily prices and ETFIQ's distribution records, 1,499 weekly returns. Cash rate: the 13-week Treasury bill.
What they share
By the books each fund has filed, DIA and MDY hold 0% of their money in the same securities at the same weight. Holdings dated Oct 27, 2026.
half
0% in common
Only in one fund ↓
Side by side
DIA and MDY on the fields both publish, as of Oct 28, 2026. Source: ETFIQ.
DIA and MDY do different jobs. What does each one do in a portfolio?
- What each follows. DIA follows Dow Jones Industrial Average and MDY follows S&P MidCap 400 Index.
- Holdings in common. 0% of the weight is in the same securities (holdings dated Oct 27, 2026).
- Number of holdings. DIA holds 30 positions and MDY holds 401.
Data as of Oct 28, 2026.
The two-page PDF for this pair is coming. Save the comparison to follow its changes. Free. It needs an email sign-in, once.
DIA
DIA tracks the Dow Jones Industrial Average. Over the year to Oct 28, 2026 it returned +11.6% with distributions reinvested. The prospectus expense ratio is 0.16% a year. By its holdings published by its issuer for Oct 27, 2026, 97% of the fund by weight is stocks the S&P 500 also holds, across 30 positions, with the top ten at 54.7%. It sat 3.0% below its high of Aug 5, 2026 on Oct 28, 2026.
MDY
MDY tracks the S&P MidCap 400. Over the year to Oct 28, 2026 it returned +12.8% with distributions reinvested, against +13.2% for its benchmark, the S&P MidCap 400 Index. The prospectus expense ratio is 0.23% a year. By its holdings published by its issuer for Oct 27, 2026, 0% of the fund by weight is stocks the S&P 500 also holds, across 401 positions, with the top ten at 7.5%. It sat 6.5% below its high of Aug 14, 2026 on Oct 28, 2026.
Questions people ask
- Which returned more over the last year, DIA or MDY?
- In the year to Oct 28, 2026, with distributions reinvested, DIA returned +11.6% and MDY +12.8%.
- Which is cheaper, DIA or MDY?
- DIA is cheaper, by 0.07 percentage points a year. That is about $7 on $10,000 held for a year. Fees come from each fund's prospectus.
Links are sources, not endorsements. A comparison is not a recommendation.
How this is computed
Overlap adds up the smaller of the two weights for each security both funds hold.
Cite this pageCitation, APA and Markdown
ETFIQ, DIA against MDY, data as of Oct 28, 2026. https://etfiq.com/compare/any/dia-vs-mdy
ETFIQ. (Oct 28, 2026). DIA against MDY. Retrieved from https://etfiq.com/compare/any/dia-vs-mdy
[DIA against MDY (ETFIQ, Oct 28, 2026)](https://etfiq.com/compare/any/dia-vs-mdy)
Free to use with attribution for data ETFIQ computes; issuer data stays under its owner's terms.