MDYGvsIVOGETF Comparison
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The ETFs State Street SPDR S&P 400 Mid Cap Growth ETF (MDYG) and Vanguard S&P Mid-Cap 400 Growth ETF (IVOG) track the S&P MidCap 400 Growth Total Return Index - USD and belong to the same industry segment: US Mid Cap Growth. Both ETFs have the same top 3 sector exposures: Industrials, Technology and Healthcare. MDYG is more expensive with a Total Expense Ratio (TER) of 0.15%, versus 0.1% for IVOG. MDYG is up 15.77% year-to-date (YTD) with -$7M in YTD flows. IVOG performs better with 15.82% YTD performance, and +$68M in YTD flows. Run a side-by-side ETF comparison of MDYG and IVOG 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 IVOG performance and flow charts
Performance
Cumulative Flows
Historic performance and flows
Data as of 07/31/2026
| 1M | 3M | YTD | 1Y | 3Y | 5Y | ||
|---|---|---|---|---|---|---|---|
| Perf. | MDYG IVOG | -3.58%-3.57% | +2.70%+2.73% | +15.77%+15.82% | +21.11%+21.19% | +47.30%+47.48% | +43.55%+43.72% |
| Flows | MDYG IVOG | +$27M+$17M | +$41M+$27M | -$7M+$68M | -$2M+$239M | +$7M+$410M | +$357M+$336M |
Volatility and drawdown
| 3M | 1Y | 3Y | 5Y | ||
|---|---|---|---|---|---|
| Volatility | MDYG IVOG | +18.04%+18.04% | +17.66%+17.67% | +18.86%+18.79% | +20.70%+20.86% |
| Max drawdown | MDYG IVOG | -6.04%-6.03% | -9.91%-9.92% | -25.46%-25.47% | -29.25%-29.28% |
| Max drawdown duration | MDYG IVOG | 31d31d | 45d45d | 379d379d | 834d829d |
Trading data
MDYG | IVOG | |
Last sale 8/3/2026 at 6:11 PM | $108.12 | $141.09 |
| Previous close 07/31/2026 | $106.80 | $139.28 |
| Consolidated volume 07/31/2026 | ||
| 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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MDYG | IVOG | |
|---|---|---|
| Tracking error | ||
| Tracking difference | ||
| 1 year cumulative return difference | ||
| Best | ||
| Worst | ||
| Daily return difference | ||
| Average | ||
| Worst | ||
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Main metrics
Last update 8/3/2026 at 6:11 PM
Live
Closed
MDYG | IVOG | |
|---|---|---|
| Last price | $108.12 | $141.09 |
| 1D performance | +1.24% | +1.30% |
| AuM | $2.81 B | $1.63 B |
| E/R | 0.15% | 0.1% |
Characteristics
MDYG | IVOG | |
|---|---|---|
| Management strategy | Passive | Passive |
| Provider | State Street Investment Management | Vanguard |
| Benchmark | S&P MidCap 400 Growth Index | S&P MidCap 400 Growth Index |
| N° of holdings | 244 | 245 |
| Asset class | Equities | Equities |
| Trailing 12m distribution yield | Join | Join |
| Inception date | November 8, 2005 | September 7, 2010 |
| ESG | No | No |
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Exposure
Countries
MDYG
USA
94.7%
Other
5.3%
IVOG
USA
93.92%
Other
6.08%
Sectors
MDYG
Industrials
22.33%
Technology
21.55%
Healthcare
13.25%
Finance
13.12%
Non-Energy Materi.
9.78%
Other
19.98%
IVOG
Industrials
22.63%
Technology
21.32%
Healthcare
13.11%
Finance
12.98%
Non-Energy Materi.
9.35%
Other
20.6%
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Diversification
MDYG
Total weight of top 15 holdings out of 15
20.48%
IVOG
Total weight of top 15 holdings out of 15
19.96%
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%
IVOG
Twilio, Inc.
1.63%
Curtiss-Wright Corp.
1.46%
nVent Electric Plc
1.43%
ATI, Inc.
1.40%
TechnipFMC plc
1.38%
Sterling Infrastructure, Inc.
1.34%
MasTec, Inc.
1.34%
Woodward, Inc.
1.32%
MACOM Technology Solutions Holdings, Inc.
1.30%
Everpure, Inc.
1.30%
Carpenter Technology Corp.
1.27%
XPO, Inc.
1.26%
United Therapeutics Corp.
1.20%
Okta, Inc.
1.19%
RB Global, Inc.
1.13%
Frequently asked questions about MDYG and IVOG
How have the MDYG and IVOG ETFs performed in 2026?
As of July 31, 2026, MDYG is up 15.77% year-to-date (YTD), while IVOG has returned 15.82%. That puts IVOG better performer ahead so far this year.
Which ETF is attracting more investor money: MDYG or IVOG?
Year-to-date, the MDYG ETF saw -$7M in flows, compared to +$68M for IVOG.
Which ETF is more volatile: MDYG or IVOG?
Over the past year, MDYG had a volatility of 17.66%, while IVOG experienced 17.67%.
Which ETF is bigger: MDYG or IVOG?
As of July 31, 2026, MDYG holds $2.81 B in assets under management (AUM), while IVOG manages $1.63 B.
What sectors do the MDYG and IVOG ETFs invest in?
MDYG leans toward sectors like Industrials, Technology and Healthcare. Meanwhile, IVOG focuses on Industrials, Technology and Healthcare.
What are the top holdings of the MDYG ETF and IVOG ETF?
MDYG top holdings include Twilio, Inc., Carpenter Technology Corp. and Curtiss-Wright Corp.. IVOG holds in its top three: Twilio, Inc., Curtiss-Wright Corp. and nVent Electric Plc.
Which ETF is more diversified: MDYG or IVOG?
MDYG holds 244 securities with 20.48% of its assets in the top 15. IVOG has 245 securities and a top 15 weight of 19.96%.
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