TMFMvsMDYGETF Comparison
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Motley Fool Mid-Cap Growth ETF (TMFM) belongs to the US Multi-Factor segment. State Street SPDR S&P 400 Mid Cap Growth ETF (MDYG) is part of the US Mid Cap Growth segment. TMFM's top 3 sector exposures are Finance, Industrials and Healthcare. In contrast, MDYG's top sector exposures are Industrials, Technology and Healthcare. TMFM is more expensive with a Total Expense Ratio (TER) of 0.85%, versus 0.15% for MDYG. TMFM is down -1.76% year-to-date (YTD) with -$21M in YTD flows. MDYG performs better with 21.5% YTD performance, and -$18M in YTD flows. Run a side-by-side ETF comparison of TMFM 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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TMFM vs MDYG performance and flow charts
Performance
Cumulative Flows
Historic performance and flows
Data as of 08/07/2026
| 1M | 3M | YTD | 1Y | 3Y | 5Y | ||
|---|---|---|---|---|---|---|---|
| Perf. | TMFM MDYG | +2.52%+3.19% | +7.74%+5.06% | -1.76%+21.50% | -10.99%+28.05% | +10.09%+55.76% | n/a+50.30% |
| Flows | TMFM MDYG | -$2M+$16M | -$8M+$30M | -$21M-$18M | -$35M-$18M | -$70M-$8M | -+$346M |
Volatility and drawdown
| 3M | 1Y | 3Y | 5Y | ||
|---|---|---|---|---|---|
| Volatility | TMFM MDYG | +23.34%+17.75% | +19.92%+17.82% | +18.12%+18.93% | n/a+20.74% |
| Max drawdown | TMFM MDYG | -6.88%-6.04% | -25.10%-9.91% | -31.61%-25.46% | n/a-29.25% |
| Max drawdown duration | TMFM MDYG | 30d37d | 348d45d | 619d379d | n/a834d |
Trading data
TMFM | MDYG | |
Last sale 8/7/2026 at 1:30 PM | $23.00 | $112.06 |
| Previous close 08/06/2026 | $22.48 | $109.89 |
| Consolidated volume 08/06/2026 | ||
| 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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TMFM
is actively managed and doesn’t replicate an indexTMFM | 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 8/7/2026 at 1:30 PM
Live
Closed
TMFM | MDYG | |
|---|---|---|
| Last price | $23.00 | $112.06 |
| 1D performance | +2.35% | +1.97% |
| AuM | $119.52 M | $2.94 B |
| E/R | 0.85% | 0.15% |
Characteristics
TMFM | MDYG | |
|---|---|---|
| Management strategy | Active | Passive |
| Provider | Motley Fool Asset Management | State Street Investment Management |
| Benchmark | - | S&P MidCap 400 Growth Index |
| N° of holdings | 31 | 244 |
| Asset class | - | Equities |
| Trailing 12m distribution yield | Join | Join |
| Inception date | June 17, 2014 | November 8, 2005 |
| ESG | No | No |
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Exposure
Countries
TMFM
USA
97.14%
Other
2.86%
MDYG
USA
94.7%
Other
5.3%
Sectors
TMFM
Finance
29.03%
Industrials
20.48%
Healthcare
19.11%
Technology
14.96%
Business Services
8.63%
Other
7.79%
MDYG
Industrials
22.33%
Technology
21.55%
Healthcare
13.25%
Finance
13.12%
Non-Energy Materi.
9.78%
Other
19.98%
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Diversification
TMFM
Total weight of top 15 holdings out of 15
68.43%
MDYG
Total weight of top 15 holdings out of 15
20.48%
Top 15 holdings
Data as of June 30, 2026
TMFM
StoneX Group, Inc.
10.19%
West Pharmaceutical Services, Inc.
5.11%
HealthEquity, Inc.
4.96%
DexCom, Inc.
4.89%
QXO, Inc.
4.64%
GXO Logistics, Inc.
4.58%
SBA Communications Corp.
4.03%
Axon Enterprise, Inc.
3.95%
Toast, Inc.
3.88%
Datadog, Inc.
3.86%
Brown & Brown, Inc.
3.78%
Waters Corp.
3.74%
Guidewire Software, Inc.
3.68%
Tyler Technologies, Inc.
3.67%
Broadridge Financial Solutions, Inc.
3.47%
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%
Frequently asked questions about TMFM and MDYG
How have the TMFM and MDYG ETFs performed in 2026?
As of August 7, 2026, TMFM is down -1.76% year-to-date (YTD), while MDYG has returned 21.5%. That puts MDYG better performer ahead so far this year.
Which ETF is attracting more investor money: TMFM or MDYG?
Year-to-date, the TMFM ETF saw -$21M in flows, compared to -$18M for MDYG.
Which ETF is more volatile: TMFM or MDYG?
Over the past year, TMFM had a volatility of 19.92%, while MDYG experienced 17.82%.
Which ETF is bigger: TMFM or MDYG?
As of August 7, 2026, TMFM holds $119.52 M in assets under management (AUM), while MDYG manages $2.94 B.
What sectors do the TMFM and MDYG ETFs invest in?
TMFM leans toward sectors like Finance, Industrials and Healthcare. Meanwhile, MDYG focuses on Industrials, Technology and Healthcare.
What are the top holdings of the TMFM ETF and MDYG ETF?
TMFM top holdings include StoneX Group, Inc., West Pharmaceutical Services, Inc. and HealthEquity, Inc.. MDYG holds in its top three: Twilio, Inc., Carpenter Technology Corp. and Curtiss-Wright Corp..
Which ETF is more diversified: TMFM or MDYG?
TMFM holds 31 securities with 68.43% of its assets in the top 15. MDYG has 244 securities and a top 15 weight of 20.48%.
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