MDYvsBBMCETF Comparison
VS
State Street SPDR S&P MIDCAP 400 ETF Trust (MDY) and JPMorgan BetaBuilders U.S. Mid Cap Equity ETF (BBMC) belong to the same industry segment: US Mid Cap. Both ETFs have the same top 3 sector exposures: Finance, Industrials and Technology. MDY is more expensive with a Total Expense Ratio (TER) of 0.23%, versus 0.07% for BBMC. MDY is up 14.43% year-to-date (YTD) with -$990M in YTD flows. BBMC performs better with 18.65% YTD performance, and -$16M in YTD flows. Run a side-by-side ETF comparison of MDY and BBMC below, and assess how they stack up in performance, liquidity, risk, exposure, holdings, and more, helping you select the best ETF for your investments.
Find out how industry players manage ETF portfolios. Discover our library of Model portfolios
MDY vs BBMC performance and flow charts
Performance
Cumulative Flows
Historic performance and flows
Data as of 09/08/2026
| 1M | 3M | YTD | 1Y | 3Y | 5Y | ||
|---|---|---|---|---|---|---|---|
| Perf. | MDY BBMC | -2.81%-2.02% | +1.84%+4.06% | +14.43%+18.65% | +15.21%+21.31% | +51.22%+67.63% | +47.28%+48.02% |
| Flows | MDY BBMC | +$235M+$45M | -$550M+$6M | -$990M-$16M | -$887M-$199M | -$828M-$363M | -$1.88B-$197M |
Volatility and drawdown
| 3M | 1Y | 3Y | 5Y | ||
|---|---|---|---|---|---|
| Volatility | MDY BBMC | +13.00%+14.33% | +15.39%+16.55% | +17.78%+18.74% | +19.71%+20.71% |
| Max drawdown | MDY BBMC | -5.17%-3.98% | -8.78%-9.60% | -23.91%-24.17% | -23.91%-30.03% |
| Max drawdown duration | MDY BBMC | 23d23d | 53d46d | 379d275d | 379d1045d |
Trading data
MDY | BBMC | |
Last sale 9/9/2026 at 1:30 PM | $679.65 | |
| Previous close 09/08/2026 | $686.96 | |
| Consolidated volume 09/08/2026 | ||
| 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
Create an account to view replication metrics
Join for free
MDY | BBMC | |
|---|---|---|
| Tracking error | ||
| Tracking difference | ||
| 1 year cumulative return difference | ||
| Best | ||
| Worst | ||
| Daily return difference | ||
| Average | ||
| Worst | ||
Advertisement
Main metrics
Last update 9/9/2026 at 1:30 PM
Live
Closed
MDY | BBMC | |
|---|---|---|
| Last price | $679.65 | – |
| 1D performance | -1.06% | – |
| AuM | $26.49 B | $2.12 B |
| E/R | 0.23% | 0.07% |
Characteristics
MDY | BBMC | |
|---|---|---|
| Management strategy | Passive | Passive |
| Provider | State Street Investment Management | J.P. Morgan Asset Management |
| Benchmark | S&P MidCap 400 Index | Morningstar US Mid Cap Target Market Exposure Extended Index |
| N° of holdings | 400 | 456 |
| Asset class | Equities | Equities |
| Trailing 12m distribution yield | Join | Join |
| Inception date | May 4, 1995 | April 14, 2020 |
| ESG | No | No |
Advertisement
Exposure
Countries
MDY
USA
95.79%
Other
4.21%
BBMC
USA
95.88%
Other
4.12%
Sectors
MDY
Finance
23%
Industrials
16.96%
Technology
13.52%
Non-Energy Materi.
10.18%
Healthcare
9.95%
Other
26.4%
BBMC
Finance
20.9%
Industrials
17.33%
Technology
13.24%
Healthcare
12.92%
Non-Energy Materi.
10.02%
Consumer Cyclical.
7.27%
Other
18.31%
Advertisement
Diversification
MDY
Total weight of top 15 holdings out of 15
10.46%
BBMC
Total weight of top 15 holdings out of 15
9.06%
Top 15 holdings
Data as of July 31, 2026
MDY
Illumina, Inc.
0.87%
Twilio, Inc.
0.84%
TechnipFMC plc
0.80%
Curtiss-Wright Corp.
0.75%
Carpenter Technology Corp.
0.72%
ATI, Inc.
0.71%
nVent Electric Plc
0.69%
Everpure, Inc.
0.68%
Okta, Inc.
0.66%
XPO, Inc.
0.66%
Burlington Stores, Inc.
0.65%
US Foods Holding Corp.
0.62%
United Therapeutics Corp.
0.61%
Tenet Healthcare Corp.
0.61%
Woodward, Inc.
0.60%
BBMC
Natera, Inc.
0.76%
Revolution Medicines, Inc.
0.75%
Casey's General Stores, Inc.
0.68%
Tapestry, Inc.
0.64%
Carpenter Technology Corp.
0.62%
TechnipFMC plc
0.61%
Qnity Electronics, Inc.
0.60%
Williams-Sonoma, Inc.
0.60%
Curtiss-Wright Corp.
0.59%
ATI, Inc.
0.56%
Reddit, Inc.
0.54%
Woodward, Inc.
0.54%
XPO, Inc.
0.53%
nVent Electric Plc
0.52%
Okta, Inc.
0.50%
Frequently asked questions about MDY and BBMC
How have the MDY and BBMC ETFs performed in 2026?
As of September 8, 2026, MDY is up 14.43% year-to-date (YTD), while BBMC has returned 18.65%. That puts BBMC better performer ahead so far this year.
Which ETF is attracting more investor money: MDY or BBMC?
Year-to-date, the MDY ETF saw -$990M in flows, compared to -$16M for BBMC.
Which ETF is more volatile: MDY or BBMC?
Over the past year, MDY had a volatility of 15.39%, while BBMC experienced 16.55%.
Which ETF is bigger: MDY or BBMC?
As of September 8, 2026, MDY holds $26.49 B in assets under management (AUM), while BBMC manages $2.12 B.
What sectors do the MDY and BBMC ETFs invest in?
MDY leans toward sectors like Finance, Industrials and Technology. Meanwhile, BBMC focuses on Finance, Industrials and Technology.
What are the top holdings of the MDY ETF and BBMC ETF?
MDY top holdings include Illumina, Inc., Twilio, Inc. and TechnipFMC plc. BBMC holds in its top three: Natera, Inc., Revolution Medicines, Inc. and Casey's General Stores, Inc..
Which ETF is more diversified: MDY or BBMC?
MDY holds 400 securities with 10.46% of its assets in the top 15. BBMC has 462 securities and a top 15 weight of 9.06%.
Advertisement
Advertisement
