MDYGvsAMIDETF Comparison
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State Street SPDR S&P 400 Mid Cap Growth ETF (MDYG) belongs to the US Mid Cap Growth segment. Argent Mid Cap ETF (AMID) is part of the US Multi-Factor segment. MDYG's top 3 sector exposures are Industrials, Technology and Healthcare. In contrast, AMID's top sector exposures are Industrials, Technology and Finance. MDYG is less expensive with a Total Expense Ratio (TER) of 0.15%, versus 0.52% for AMID. MDYG is up 19.23% year-to-date (YTD) with -$23M in YTD flows. AMID performs worse with 9.19% YTD performance, and +$4M in YTD flows. Run a side-by-side ETF comparison of MDYG and AMID 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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MDYG vs AMID performance and flow charts
Performance
Cumulative Flows
Historic performance and flows
Data as of 08/05/2026
| 1M | 3M | YTD | 1Y | 3Y | 5Y | ||
|---|---|---|---|---|---|---|---|
| Perf. | MDYG AMID | -0.46%+0.97% | +4.41%+4.14% | +19.23%+9.19% | +24.94%+8.05% | +52.84%+34.95% | +47.19%n/a |
| Flows | MDYG AMID | +$10M+$1M | +$25M+$2M | -$23M+$4M | -$23M+$803K | -$13M+$65M | +$341M- |
Volatility and drawdown
| 3M | 1Y | 3Y | 5Y | ||
|---|---|---|---|---|---|
| Volatility | MDYG AMID | +18.32%+17.01% | +17.73%+16.66% | +18.92%+17.75% | +20.73%n/a |
| Max drawdown | MDYG AMID | -6.04%-4.88% | -9.91%-12.35% | -25.46%-23.58% | -29.25%n/a |
| Max drawdown duration | MDYG AMID | 36d27d | 45d139d | 379d618d | 834dn/a |
Trading data
MDYG | AMID | |
Last sale 8/6/2026 at 3:36 PM | $110.54 | $36.77 |
| Previous close 08/05/2026 | $109.89 | $36.60 |
| Consolidated volume 08/05/2026 | ||
| Average volume 30 days | ||
| Average discount or premium 30 days | ||
| Average Bid/Ask spread 30 days |
Replication quality
Data as of July 31, 2026
1-year trailing difference
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AMID
is actively managed and doesn’t replicate an indexMDYG | AMID | |
|---|---|---|
| Tracking error | ||
| Tracking difference | ||
| 1 year cumulative return difference | ||
| Best | ||
| Worst | ||
| Daily return difference | ||
| Average | ||
| Worst | ||
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Main metrics
Last update 8/6/2026 at 3:36 PM
Live
Closed
MDYG | AMID | |
|---|---|---|
| Last price | $110.54 | $36.77 |
| 1D performance | +0.59% | +0.46% |
| AuM | $2.88 B | $114.30 M |
| E/R | 0.15% | 0.52% |
Characteristics
MDYG | AMID | |
|---|---|---|
| Management strategy | Passive | Active |
| Provider | State Street Investment Management | Alpha Architect |
| Benchmark | S&P MidCap 400 Growth Index | - |
| N° of holdings | 244 | 44 |
| Asset class | Equities | - |
| Trailing 12m distribution yield | Join | Join |
| Inception date | November 8, 2005 | August 17, 2022 |
| ESG | No | No |
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Exposure
Countries
MDYG
USA
94.7%
Other
5.3%
AMID
USA
91.84%
Other
8.16%
Sectors
MDYG
Industrials
22.33%
Technology
21.55%
Healthcare
13.25%
Finance
13.12%
Non-Energy Materi.
9.78%
Other
19.98%
AMID
Industrials
26.3%
Technology
21.29%
Finance
15.37%
Healthcare
8.82%
Other
28.22%
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Diversification
MDYG
Total weight of top 15 holdings out of 15
20.48%
AMID
Total weight of top 15 holdings out of 15
44.37%
Top 15 holdings
Data as of June 30, 2026
MDYG
Twilio, Inc.
1.65%
Carpenter Technology Corp.
1.61%
Curtiss-Wright Corp.
1.47%
nVent Electric Plc
1.44%
ATI, Inc.
1.42%
TechnipFMC plc
1.39%
Sterling Infrastructure, Inc.
1.36%
MasTec, Inc.
1.35%
Woodward, Inc.
1.33%
MACOM Technology Solutions Holdings, Inc.
1.31%
Everpure, Inc.
1.31%
XPO, Inc.
1.27%
United Therapeutics Corp.
1.21%
Okta, Inc.
1.21%
RB Global, Inc.
1.14%
AMID
Comfort Systems USA, Inc.
4.30%
Fortinet, Inc.
4.01%
Victory Capital Holdings, Inc.
3.82%
United Rentals, Inc.
3.21%
Medpace Holdings, Inc.
3.11%
Monolithic Power Systems, Inc.
2.83%
NRG Energy, Inc.
2.75%
US Foods Holding Corp.
2.67%
Vertiv Holdings Co.
2.56%
Hewlett Packard Enterprise Co.
2.56%
TD SYNNEX Corp.
2.55%
Axos Financial, Inc.
2.52%
UL Solutions, Inc.
2.52%
LPL Financial Holdings, Inc.
2.49%
D.R. Horton, Inc.
2.47%
Frequently asked questions about MDYG and AMID
How have the MDYG and AMID ETFs performed in 2026?
As of August 5, 2026, MDYG is up 19.23% year-to-date (YTD), while AMID has returned 9.19%. That puts MDYG better performer ahead so far this year.
Which ETF is attracting more investor money: MDYG or AMID?
Year-to-date, the MDYG ETF saw -$23M in flows, compared to +$4M for AMID.
Which ETF is more volatile: MDYG or AMID?
Over the past year, MDYG had a volatility of 17.73%, while AMID experienced 16.66%.
Which ETF is bigger: MDYG or AMID?
As of August 5, 2026, MDYG holds $2.88 B in assets under management (AUM), while AMID manages $114.30 M.
What sectors do the MDYG and AMID ETFs invest in?
MDYG leans toward sectors like Industrials, Technology and Healthcare. Meanwhile, AMID focuses on Industrials, Technology and Finance.
What are the top holdings of the MDYG ETF and AMID ETF?
MDYG top holdings include Twilio, Inc., Carpenter Technology Corp. and Curtiss-Wright Corp.. AMID holds in its top three: Comfort Systems USA, Inc., Fortinet, Inc. and Victory Capital Holdings, Inc..
Which ETF is more diversified: MDYG or AMID?
MDYG holds 244 securities with 20.48% of its assets in the top 15. AMID has 44 securities and a top 15 weight of 44.37%.
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