IVOGvsMDYGETF Comparison
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The ETFs Vanguard S&P Mid-Cap 400 Growth ETF (IVOG) and State Street SPDR S&P 400 Mid Cap Growth ETF (MDYG) 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. IVOG is less expensive with a Total Expense Ratio (TER) of 0.1%, versus 0.15% for MDYG. IVOG is up 13.96% year-to-date (YTD) with +$50M in YTD flows. MDYG performs worse with 13.9% YTD performance, and +$4M in YTD flows. Run a side-by-side ETF comparison of IVOG and MDYG 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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IVOG vs MDYG performance and flow charts
Performance
Cumulative Flows
Historic performance and flows
Data as of 09/14/2026
| 1M | 3M | YTD | 1Y | 3Y | 5Y | ||
|---|---|---|---|---|---|---|---|
| Perf. | IVOG MDYG | -7.55%-7.55% | -4.92%-4.94% | +13.96%+13.90% | +14.81%+14.73% | +50.35%+50.15% | +41.97%+41.77% |
| Flows | IVOG MDYG | -$6M+$22M | +$4M+$53M | +$50M+$4M | +$43M-$4M | +$387M+$21M | +$324M+$357M |
Volatility and drawdown
| 3M | 1Y | 3Y | 5Y | ||
|---|---|---|---|---|---|
| Volatility | IVOG MDYG | +15.64%+15.63% | +17.74%+17.73% | +18.89%+18.97% | +20.91%+20.78% |
| Max drawdown | IVOG MDYG | -7.58%-7.57% | -9.92%-9.91% | -25.47%-25.46% | -29.28%-29.25% |
| Max drawdown duration | IVOG MDYG | 28d28d | 45d45d | 379d379d | 829d834d |
Trading data
IVOG | MDYG | |
Last sale 9/15/2026 at 1:30 PM | $136.36 | $104.43 |
| Previous close 09/14/2026 | $137.12 | $105.06 |
| Consolidated volume 09/14/2026 | ||
| Average volume 30 days | ||
| Average discount or premium 30 days | ||
| Average Bid/Ask spread 30 days |
Replication quality
Data as of August 31, 2026
1-year trailing difference
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IVOG | MDYG | |
|---|---|---|
| Tracking error | ||
| Tracking difference | ||
| 1 year cumulative return difference | ||
| Best | ||
| Worst | ||
| Daily return difference | ||
| Average | ||
| Worst | ||
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Main metrics
Last update 9/15/2026 at 1:30 PM
Live
Closed
IVOG | MDYG | |
|---|---|---|
| Last price | $136.36 | $104.43 |
| 1D performance | -0.55% | -0.60% |
| AuM | $1.59 B | $2.78 B |
| E/R | 0.1% | 0.15% |
Characteristics
IVOG | MDYG | |
|---|---|---|
| Management strategy | Passive | Passive |
| Provider | Vanguard | State Street Investment Management |
| Benchmark | S&P MidCap 400 Growth Index | S&P MidCap 400 Growth Index |
| N° of holdings | 245 | 245 |
| Asset class | Equities | Equities |
| Trailing 12m distribution yield | Join | Join |
| Inception date | September 7, 2010 | November 8, 2005 |
| ESG | No | No |
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Exposure
Countries
IVOG
USA
94.1%
Other
5.9%
MDYG
USA
94.73%
Other
5.27%
Sectors
IVOG
Industrials
20.55%
Technology
19.06%
Healthcare
15.41%
Finance
14.4%
Non-Energy Materi.
8.94%
Other
21.64%
MDYG
Industrials
20.61%
Technology
19.17%
Healthcare
15.46%
Finance
14.43%
Non-Energy Materi.
9.26%
Other
21.06%
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Diversification
IVOG
Total weight of top 15 holdings out of 15
19.23%
MDYG
Total weight of top 15 holdings out of 15
19.58%
Top 15 holdings
Data as of July 31, 2026
IVOG
Twilio, Inc.
1.64%
TechnipFMC plc
1.56%
Curtiss-Wright Corp.
1.46%
ATI, Inc.
1.40%
nVent Electric Plc
1.36%
Everpure, Inc.
1.33%
Okta, Inc.
1.30%
XPO, Inc.
1.29%
United Therapeutics Corp.
1.20%
Tenet Healthcare Corp.
1.20%
Woodward, Inc.
1.18%
Carpenter Technology Corp.
1.13%
RB Global, Inc.
1.12%
Roku, Inc.
1.04%
Sterling Infrastructure, Inc.
1.00%
MDYG
Twilio, Inc.
1.65%
TechnipFMC plc
1.57%
Curtiss-Wright Corp.
1.47%
Carpenter Technology Corp.
1.42%
ATI, Inc.
1.41%
nVent Electric Plc
1.37%
Everpure, Inc.
1.34%
Okta, Inc.
1.31%
XPO, Inc.
1.30%
United Therapeutics Corp.
1.21%
Tenet Healthcare Corp.
1.20%
Woodward, Inc.
1.18%
RB Global, Inc.
1.12%
Roku, Inc.
1.04%
Sterling Infrastructure, Inc.
1.01%
Frequently asked questions about IVOG and MDYG
How have the IVOG and MDYG ETFs performed in 2026?
As of September 14, 2026, IVOG is up 13.96% year-to-date (YTD), while MDYG has returned 13.9%. That puts IVOG better performer ahead so far this year.
Which ETF is attracting more investor money: IVOG or MDYG?
Year-to-date, the IVOG ETF saw +$50M in flows, compared to +$4M for MDYG.
Which ETF is more volatile: IVOG or MDYG?
Over the past year, IVOG had a volatility of 17.74%, while MDYG experienced 17.73%.
Which ETF is bigger: IVOG or MDYG?
As of September 14, 2026, IVOG holds $1.59 B in assets under management (AUM), while MDYG manages $2.78 B.
What sectors do the IVOG and MDYG ETFs invest in?
IVOG leans toward sectors like Industrials, Technology and Healthcare. Meanwhile, MDYG focuses on Industrials, Technology and Healthcare.
What are the top holdings of the IVOG ETF and MDYG ETF?
IVOG top holdings include Twilio, Inc., TechnipFMC plc and Curtiss-Wright Corp.. MDYG holds in its top three: Twilio, Inc., TechnipFMC plc and Curtiss-Wright Corp..
Which ETF is more diversified: IVOG or MDYG?
IVOG holds 245 securities with 19.23% of its assets in the top 15. MDYG has 245 securities and a top 15 weight of 19.58%.
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