RUNNvsSIZEETF Comparison
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Running Oak Efficient Growth ETF (RUNN) belongs to the Uncategorized Equities segment. iShares MSCI USA Size Factor ETF (SIZE) is part of the US Large Cap segment. RUNN's top 3 sector exposures are Industrials, Finance and Healthcare. In contrast, SIZE's top sector exposures are Finance, Technology and Industrials. RUNN is more expensive with a Total Expense Ratio (TER) of 0.58%, versus 0.15% for SIZE. RUNN is up 3.4% year-to-date (YTD) with +$29M in YTD flows. SIZE performs better with 13.81% YTD performance, and -$556K in YTD flows. Run a side-by-side ETF comparison of RUNN and SIZE 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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RUNN vs SIZE performance and flow charts
Performance
Cumulative Flows
Historic performance and flows
Data as of 09/01/2026
| 1M | 3M | YTD | 1Y | 3Y | 5Y | ||
|---|---|---|---|---|---|---|---|
| Perf. | RUNN SIZE | -0.11%+2.34% | +4.48%+4.02% | +3.40%+13.81% | +0.99%+16.83% | +31.01%+54.58% | n/a+47.03% |
| Flows | RUNN SIZE | +$10M- | +$39M- | +$29M-$556K | +$31M+$16M | +$318M-$15M | --$325M |
Volatility and drawdown
| 3M | 1Y | 3Y | 5Y | ||
|---|---|---|---|---|---|
| Volatility | RUNN SIZE | +15.26%+11.06% | +13.70%+12.18% | +14.13%+14.55% | n/a+17.09% |
| Max drawdown | RUNN SIZE | -3.83%-2.26% | -10.26%-7.92% | -17.02%-18.57% | n/a-24.05% |
| Max drawdown duration | RUNN SIZE | 30d8d | 176d49d | 630d219d | n/a820d |
Trading data
RUNN | SIZE | |
Last sale 9/1/2026 at 7:58 PM | $34.46 | $180.83 |
| Previous close 09/01/2026 | $34.95 | $182.76 |
| Consolidated volume 09/01/2026 | ||
| 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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RUNN
is actively managed and doesn’t replicate an indexRUNN | SIZE | |
|---|---|---|
| Tracking error | ||
| Tracking difference | ||
| 1 year cumulative return difference | ||
| Best | ||
| Worst | ||
| Daily return difference | ||
| Average | ||
| Worst | ||
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Main metrics
Last update 9/1/2026 at 7:58 PM
Live
Closed
RUNN | SIZE | |
|---|---|---|
| Last price | $34.46 | $180.83 |
| 1D performance | -1.39% | -1.06% |
| AuM | $410.66 M | $438.77 M |
| E/R | 0.58% | 0.15% |
Characteristics
RUNN | SIZE | |
|---|---|---|
| Management strategy | Active | Passive |
| Provider | Running Oak Capital | iShares |
| Benchmark | - | MSCI USA Low Size Index |
| N° of holdings | 58 | 519 |
| Asset class | - | Equities |
| Trailing 12m distribution yield | Join | Join |
| Inception date | June 8, 2023 | April 16, 2013 |
| ESG | No | No |
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Exposure
Countries
RUNN
USA
89.82%
Other
10.18%
SIZE
USA
93.67%
Other
6.33%
Sectors
RUNN
Industrials
29.25%
Finance
14.64%
Healthcare
14.27%
Technology
13.84%
Business Services
10.61%
Other
17.38%
SIZE
Finance
21.79%
Technology
16.42%
Industrials
13.45%
Healthcare
11.31%
Consumer Non-Cycl.
7.29%
Other
29.73%
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Diversification
RUNN
Total weight of top 15 holdings out of 15
29.51%
SIZE
Total weight of top 15 holdings out of 15
4.16%
Top 15 holdings
Data as of July 31, 2026
RUNN
Zebra Technologies Corp.
2.16%
IQVIA Holdings, Inc.
2.15%
State Street Institutional Treasury Money Market Fund
2.07%
Automatic Data Processing, Inc.
2.04%
Arthur J. Gallagher & Co.
2.03%
Brown & Brown, Inc.
2.02%
ServiceNow, Inc.
2.01%
Primerica, Inc.
1.92%
FactSet Research Systems, Inc.
1.91%
Marsh & McLennan Cos., Inc.
1.89%
Visa, Inc.
1.88%
Stryker Corp.
1.87%
Roper Technologies, Inc.
1.86%
W.W. Grainger, Inc.
1.86%
Centene Corp.
1.85%
SIZE
Snowflake, Inc.
0.32%
Okta, Inc.
0.31%
SharkNinja, Inc.
0.30%
Dell Technologies, Inc.
0.30%
Best Buy Co., Inc.
0.28%
International Paper Co.
0.28%
Illumina, Inc.
0.27%
Toast, Inc.
0.27%
NetApp, Inc.
0.27%
Dollar Tree, Inc.
0.27%
CDW Corp.
0.27%
Hewlett Packard Enterprise Co.
0.26%
Genuine Parts Co.
0.26%
United Airlines Holdings, Inc.
0.25%
Williams-Sonoma, Inc.
0.25%
Frequently asked questions about RUNN and SIZE
How have the RUNN and SIZE ETFs performed in 2026?
As of September 1, 2026, RUNN is up 3.4% year-to-date (YTD), while SIZE has returned 13.81%. That puts SIZE better performer ahead so far this year.
Which ETF is attracting more investor money: RUNN or SIZE?
Year-to-date, the RUNN ETF saw +$29M in flows, compared to -$556K for SIZE.
Which ETF is more volatile: RUNN or SIZE?
Over the past year, RUNN had a volatility of 13.7%, while SIZE experienced 12.18%.
Which ETF is bigger: RUNN or SIZE?
As of September 1, 2026, RUNN holds $410.66 M in assets under management (AUM), while SIZE manages $438.77 M.
What sectors do the RUNN and SIZE ETFs invest in?
RUNN leans toward sectors like Industrials, Finance and Healthcare. Meanwhile, SIZE focuses on Finance, Technology and Industrials.
What are the top holdings of the RUNN ETF and SIZE ETF?
RUNN top holdings include Zebra Technologies Corp., IQVIA Holdings, Inc. and State Street Institutional Treasury Money Market Fund. SIZE holds in its top three: Snowflake, Inc., Okta, Inc. and SharkNinja, Inc..
Which ETF is more diversified: RUNN or SIZE?
RUNN holds 59 securities with 29.51% of its assets in the top 15. SIZE has 529 securities and a top 15 weight of 4.16%.
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Latest news about RUNN & SIZE
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