SPMDvsMDYETF Comparison
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The ETFs State Street SPDR Portfolio S&P 400 Mid Cap ETF (SPMD) and State Street SPDR S&P MIDCAP 400 ETF Trust (MDY) track the S&P MidCap 400 Total Return Index - USD and belong to the same industry segment: US Mid Cap. Both ETFs have the same top 3 sector exposures: Finance, Industrials and Technology. SPMD is less expensive with a Total Expense Ratio (TER) of 0.03%, versus 0.23% for MDY. SPMD is up 10.57% year-to-date (YTD) with +$1.96B in YTD flows. MDY performs worse with 10.29% YTD performance, and -$838M in YTD flows. Run a side-by-side ETF comparison of SPMD and MDY below, and assess how they stack up in performance, liquidity, risk, exposure, holdings, and more, helping you select the best ETF for your investments.
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SPMD vs MDY performance and flow charts
Performance
Cumulative Flows
Historic performance and flows
Data as of 10/23/2026
| 1M | 3M | YTD | 1Y | 3Y | 5Y | ||
|---|---|---|---|---|---|---|---|
| Perf. | SPMD MDY | -0.88%-0.89% | -3.74%-3.76% | +10.57%+10.29% | +11.78%+11.43% | +59.37%+57.95% | +38.91%+37.18% |
| Flows | SPMD MDY | +$373M+$169M | +$880M-$116M | +$1.96B-$838M | +$2.37B-$317M | +$7.48B-$612M | +$9.97B-$1.58B |
Volatility and drawdown
| 3M | 1Y | 3Y | 5Y | ||
|---|---|---|---|---|---|
| Volatility | SPMD MDY | +12.14%+11.97% | +14.91%+14.96% | +17.65%+17.58% | +19.52%+19.65% |
| Max drawdown | SPMD MDY | -8.24%-8.21% | -8.82%-8.78% | -23.98%-23.91% | -23.98%-23.91% |
| Max drawdown duration | SPMD MDY | 68d68d | 53d53d | 379d379d | 379d379d |
Trading data
SPMD | MDY | |
Last sale 10/26/2026 at 2:22 PM | $64.05 | $667.64 |
| Previous close 10/23/2026 | $63.40 | $660.16 |
| Consolidated volume 10/23/2026 | ||
| Average volume 30 days | ||
| Average discount or premium 30 days | ||
| Average Bid/Ask spread 30 days |
Replication quality
Data as of September 30, 2026
1-year trailing difference
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SPMD | MDY | |
|---|---|---|
| Tracking error | ||
| Tracking difference | ||
| 1 year cumulative return difference | ||
| Best | ||
| Worst | ||
| Daily return difference | ||
| Average | ||
| Worst | ||
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Main metrics
Last update 10/26/2026 at 2:22 PM
Live
Closed
SPMD | MDY | |
|---|---|---|
| Last price | $64.05 | $667.64 |
| 1D performance | +1.02% | +1.13% |
| AuM | $18.37 B | $25.62 B |
| E/R | 0.03% | 0.23% |
Characteristics
SPMD | MDY | |
|---|---|---|
| Management strategy | Passive | Passive |
| Provider | State Street Investment Management | State Street Investment Management |
| Benchmark | S&P MidCap 400 Index | S&P MidCap 400 Index |
| N° of holdings | 400 | 400 |
| Asset class | Equities | Equities |
| Trailing 12m distribution yield | Join | Join |
| Inception date | November 8, 2005 | May 4, 1995 |
| ESG | No | No |
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Exposure
Countries
SPMD
USA
96.33%
Other
3.67%
MDY
USA
95.7%
Other
4.3%
Sectors
SPMD
Finance
22.8%
Industrials
16.34%
Technology
14.42%
Non-Energy Materi.
10.56%
Healthcare
10.26%
Other
25.62%
MDY
Finance
22.65%
Industrials
16.23%
Technology
14.33%
Non-Energy Materi.
10.49%
Healthcare
10.19%
Other
26.11%
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Diversification
SPMD
Total weight of top 15 holdings out of 15
10.89%
MDY
Total weight of top 15 holdings out of 15
10.81%
Top 15 holdings
Data as of August 31, 2026
SPMD
Twilio, Inc.
1.00%
Illumina, Inc.
0.91%
TechnipFMC plc
0.87%
Everpure, Inc.
0.82%
Okta, Inc.
0.81%
ATI, Inc.
0.78%
nVent Electric Plc
0.68%
Carpenter Technology Corp.
0.66%
US Foods Holding Corp.
0.65%
Tenet Healthcare Corp.
0.64%
XPO, Inc.
0.64%
United Therapeutics Corp.
0.61%
Curtiss-Wright Corp.
0.60%
Coeur Mining, Inc.
0.60%
Royal Gold, Inc.
0.60%
MDY
Twilio, Inc.
1.00%
Illumina, Inc.
0.90%
TechnipFMC plc
0.87%
Everpure, Inc.
0.82%
Okta, Inc.
0.81%
ATI, Inc.
0.78%
nVent Electric Plc
0.68%
Carpenter Technology Corp.
0.66%
US Foods Holding Corp.
0.64%
Tenet Healthcare Corp.
0.64%
XPO, Inc.
0.63%
United Therapeutics Corp.
0.60%
Curtiss-Wright Corp.
0.60%
Coeur Mining, Inc.
0.60%
Royal Gold, Inc.
0.59%
Frequently asked questions about SPMD and MDY
How have the SPMD and MDY ETFs performed in 2026?
As of October 23, 2026, SPMD is up 10.57% year-to-date (YTD), while MDY has returned 10.29%. That puts SPMD better performer ahead so far this year.
Which ETF is attracting more investor money: SPMD or MDY?
Year-to-date, the SPMD ETF saw +$1.96B in flows, compared to -$838M for MDY.
Which ETF is more volatile: SPMD or MDY?
Over the past year, SPMD had a volatility of 14.91%, while MDY experienced 14.96%.
Which ETF is bigger: SPMD or MDY?
As of October 23, 2026, SPMD holds $18.37 B in assets under management (AUM), while MDY manages $25.62 B.
What sectors do the SPMD and MDY ETFs invest in?
SPMD leans toward sectors like Finance, Industrials and Technology. Meanwhile, MDY focuses on Finance, Industrials and Technology.
What are the top holdings of the SPMD ETF and MDY ETF?
SPMD top holdings include Twilio, Inc., Illumina, Inc. and TechnipFMC plc. MDY holds in its top three: Twilio, Inc., Illumina, Inc. and TechnipFMC plc.
Which ETF is more diversified: SPMD or MDY?
SPMD holds 400 securities with 10.89% of its assets in the top 15. MDY has 400 securities and a top 15 weight of 10.81%.
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