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, Technology and Finance. 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 2.68% year-to-date (YTD) with +$22M in YTD flows. SIZE performs better with 10.94% 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 10/16/2026
| 1M | 3M | YTD | 1Y | 3Y | 5Y | ||
|---|---|---|---|---|---|---|---|
| Perf. | RUNN SIZE | +2.82%+0.78% | +2.09%-0.62% | +2.68%+10.94% | +2.84%+13.41% | +34.34%+57.58% | n/a+43.66% |
| Flows | RUNN SIZE | -$9M- | +$54M- | +$22M-$556K | +$23M+$16M | +$303M-$9M | --$251M |
Volatility and drawdown
| 3M | 1Y | 3Y | 5Y | ||
|---|---|---|---|---|---|
| Volatility | RUNN SIZE | +14.64%+10.61% | +13.97%+12.13% | +14.20%+14.46% | n/a+17.05% |
| Max drawdown | RUNN SIZE | -8.60%-6.56% | -10.26%-7.92% | -17.02%-18.57% | n/a-24.05% |
| Max drawdown duration | RUNN SIZE | 64d64d | 176d49d | 630d219d | n/a820d |
Trading data
RUNN | SIZE | |
Last sale 10/19/2026 at 1:30 PM | $34.17 | $177.04 |
| Previous close 10/16/2026 | $34.23 | $177.44 |
| Consolidated volume 10/16/2026 | ||
| Average volume 30 days | ||
| Average discount or premium 30 days | ||
| Average Bid/Ask spread 30 days |
Replication quality
Data as of September 30, 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 10/19/2026 at 1:30 PM
Live
Closed
RUNN | SIZE | |
|---|---|---|
| Last price | $34.17 | $177.04 |
| 1D performance | -0.17% | -0.23% |
| AuM | $400.97 M | $426.12 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 | 59 | 512 |
| 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
91.55%
Other
8.45%
SIZE
USA
94.8%
Other
5.2%
Sectors
RUNN
Industrials
29.46%
Technology
15.52%
Finance
14.77%
Healthcare
14.53%
Business Services
11.03%
Other
14.7%
SIZE
Finance
21.7%
Technology
17.25%
Industrials
13.27%
Healthcare
12%
Consumer Non-Cycl.
7.12%
Other
28.67%
Diversification
RUNN
Total weight of top 15 holdings out of 15
31.53%
SIZE
Total weight of top 15 holdings out of 15
4.85%
Top 15 holdings
Data as of August 31, 2026
RUNN
ServiceNow, Inc.
2.59%
Zebra Technologies Corp.
2.51%
IQVIA Holdings, Inc.
2.31%
FactSet Research Systems, Inc.
2.20%
Automatic Data Processing, Inc.
2.13%
CACI International, Inc.
2.09%
Arthur J. Gallagher & Co.
2.07%
State Street Institutional Treasury Money Market Fund
2.04%
Brown & Brown, Inc.
2.01%
Jacobs Solutions, Inc.
1.98%
Broadridge Financial Solutions, Inc.
1.96%
Roper Technologies, Inc.
1.96%
SS&C Technologies Holdings, Inc.
1.92%
Visa, Inc.
1.89%
ResMed, Inc.
1.88%
SIZE
Atlassian Corp.
0.42%
Okta, Inc.
0.39%
Equity Residential
0.37%
SharkNinja, Inc.
0.36%
Snowflake, Inc.
0.35%
Dell Technologies, Inc.
0.34%
Veeva Systems, Inc.
0.33%
Natera, Inc.
0.31%
Hewlett Packard Enterprise Co.
0.29%
NetApp, Inc.
0.29%
Illumina, Inc.
0.28%
Workday, Inc.
0.28%
Genuine Parts Co.
0.28%
Toast, Inc.
0.28%
IQVIA Holdings, Inc.
0.28%
Frequently asked questions about RUNN and SIZE
How have the RUNN and SIZE ETFs performed in 2026?
As of October 16, 2026, RUNN is up 2.68% year-to-date (YTD), while SIZE has returned 10.94%. 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 +$22M in flows, compared to -$556K for SIZE.
Which ETF is more volatile: RUNN or SIZE?
Over the past year, RUNN had a volatility of 13.97%, while SIZE experienced 12.13%.
Which ETF is bigger: RUNN or SIZE?
As of October 16, 2026, RUNN holds $400.97 M in assets under management (AUM), while SIZE manages $426.12 M.
What sectors do the RUNN and SIZE ETFs invest in?
RUNN leans toward sectors like Industrials, Technology and Finance. Meanwhile, SIZE focuses on Finance, Technology and Industrials.
What are the top holdings of the RUNN ETF and SIZE ETF?
RUNN top holdings include ServiceNow, Inc., Zebra Technologies Corp. and IQVIA Holdings, Inc.. SIZE holds in its top three: Atlassian Corp., Okta, Inc. and Equity Residential.
Which ETF is more diversified: RUNN or SIZE?
RUNN holds 59 securities with 31.53% of its assets in the top 15. SIZE has 516 securities and a top 15 weight of 4.85%.
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Latest news about RUNN & SIZE
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