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: Technology, Industrials and Healthcare. MDYG is more expensive with a Total Expense Ratio (TER) of 0.15%, versus 0.1% for IVOG. MDYG is up 11.9% year-to-date (YTD) with +$73M in YTD flows. IVOG performs better with 11.97% YTD performance, and +$152M 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 10/30/2026
| 1M | 3M | YTD | 1Y | 3Y | 5Y | ||
|---|---|---|---|---|---|---|---|
| Perf. | MDYG IVOG | -1.52%-1.51% | -3.40%-3.39% | +11.90%+11.97% | +13.76%+13.84% | +61.96%+62.21% | +30.05%+30.22% |
| Flows | MDYG IVOG | +$42M+$11M | +$79M+$84M | +$73M+$152M | +$105M+$144M | +$59M+$493M | +$459M+$430M |
Volatility and drawdown
| 3M | 1Y | 3Y | 5Y | ||
|---|---|---|---|---|---|
| Volatility | MDYG IVOG | +15.17%+15.18% | +17.64%+17.65% | +18.87%+18.80% | +20.76%+20.89% |
| Max drawdown | MDYG IVOG | -10.14%-10.15% | -10.14%-10.15% | -25.46%-25.47% | -29.25%-29.28% |
| Max drawdown duration | MDYG IVOG | 74d74d | 74d74d | 379d379d | 834d829d |
Trading data
MDYG | IVOG | |
Last sale 10/30/2026 at 1:30 PM | $102.87 | $134.56 |
| Previous close 10/30/2026 | $104.90 | $137.45 |
| Consolidated volume 10/30/2026 | ||
| Average volume 30 days | ||
| Average discount or premium 30 days | ||
| Average Bid/Ask spread 30 days |
Replication quality
Data as of October 30, 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 10/30/2026 at 1:30 PM
Live
Closed
MDYG | IVOG | |
|---|---|---|
| Last price | $102.87 | $134.56 |
| 1D performance | -1.94% | -2.10% |
| AuM | $2.79 B | $1.66 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 | 247 | 247 |
| 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
94.63%
Other
5.37%
IVOG
USA
93.78%
Other
6.22%
Sectors
MDYG
Technology
21.77%
Industrials
19.09%
Healthcare
15.65%
Finance
14.45%
Non-Energy Materi.
9.29%
Other
19.74%
IVOG
Technology
21.62%
Industrials
18.96%
Healthcare
15.54%
Finance
14.35%
Non-Energy Materi.
9.02%
Other
20.5%
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Diversification
MDYG
Total weight of top 15 holdings out of 15
20.18%
IVOG
Total weight of top 15 holdings out of 15
19.97%
Top 15 holdings
Data as of September 30, 2026
MDYG
Twilio, Inc.
2.52%
Okta, Inc.
1.95%
TechnipFMC plc
1.50%
nVent Electric Plc
1.46%
ATI, Inc.
1.45%
United Therapeutics Corp.
1.31%
XPO, Inc.
1.16%
Tenet Healthcare Corp.
1.16%
Roku, Inc.
1.13%
Curtiss-Wright Corp.
1.13%
Royal Gold, Inc.
1.12%
MACOM Technology Solutions Holdings, Inc.
1.11%
Woodward, Inc.
1.09%
Carpenter Technology Corp.
1.08%
Coeur Mining, Inc.
1.02%
IVOG
Twilio, Inc.
2.51%
Okta, Inc.
1.94%
TechnipFMC plc
1.49%
nVent Electric Plc
1.45%
ATI, Inc.
1.44%
United Therapeutics Corp.
1.30%
XPO, Inc.
1.15%
Tenet Healthcare Corp.
1.15%
Roku, Inc.
1.12%
Curtiss-Wright Corp.
1.12%
Royal Gold, Inc.
1.12%
MACOM Technology Solutions Holdings, Inc.
1.10%
Woodward, Inc.
1.08%
Coeur Mining, Inc.
1.01%
ITT, Inc.
1.01%
Frequently asked questions about MDYG and IVOG
How have the MDYG and IVOG ETFs performed in 2026?
As of October 30, 2026, MDYG is up 11.9% year-to-date (YTD), while IVOG has returned 11.97%. 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 +$73M in flows, compared to +$152M for IVOG.
Which ETF is more volatile: MDYG or IVOG?
Over the past year, MDYG had a volatility of 17.64%, while IVOG experienced 17.65%.
Which ETF is bigger: MDYG or IVOG?
As of October 30, 2026, MDYG holds $2.79 B in assets under management (AUM), while IVOG manages $1.66 B.
What sectors do the MDYG and IVOG ETFs invest in?
MDYG leans toward sectors like Technology, Industrials and Healthcare. Meanwhile, IVOG focuses on Technology, Industrials and Healthcare.
What are the top holdings of the MDYG ETF and IVOG ETF?
MDYG top holdings include Twilio, Inc., Okta, Inc. and TechnipFMC plc. IVOG holds in its top three: Twilio, Inc., Okta, Inc. and TechnipFMC plc.
Which ETF is more diversified: MDYG or IVOG?
MDYG holds 247 securities with 20.18% of its assets in the top 15. IVOG has 247 securities and a top 15 weight of 19.97%.
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