Data as of Oct 28, 2026.
IWC vs VIOG: Differences, Returns & Fees
Over the year to Oct 28, 2026, IWC returned +16.5% to VIOG's +15.8%; 2% of their weight is in the same names.
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Net assets: $1.2bn on Oct 27, 2026 for iShares Micro-Cap ETF, and $1.0bn on Sep 30, 2026 for Vanguard S&P Small-Cap 600 Growth ETF.
Pair scorecard
VIOG costs 0.50 points a year less; their one-year returns differ by 0.7 points; IWC is 1.4 times larger.
| Measure | IWC | VIOG |
|---|---|---|
| Return | ||
| Total return, 1 year | +16.5% | +15.8% |
| Drawdown | ||
| Below its high | 9.5%, high on Aug 14, 2026 | 8.2%, high on Aug 4, 2026 |
| Benchmark | ||
| What it tracks | Russell Microcap Index | S&P SmallCap 600 Growth Index |
| Cost and size | ||
| Expense ratio | 0.60% | 0.10% |
| Net assets, as of Sep 30, 2026 | $1.4bn | $1.0bn |
| Holdings | ||
| Holdings in common | 2% | |
| Top ten holdings, share of the fund | 5.9% | 9.9% |
Holdings in common uses holdings dated Sep 30, 2026 and Oct 27, 2026. Method
Risk and return
Sep 17, 2010 to Oct 23, 2026 · 840 weekly returnsEach against its own benchmark: IWC against IWV, Aug 26, 2005 to Oct 23, 2026; VIOG against IJT, Sep 17, 2010 to Oct 23, 2026.
VIOG returned more: +527.1% to +434.7%. VIOG swung slightly less: 20.5% to 22.4%. VIOG fell slightly less at its worst: −41.3% to −45.2%.
Full scorecard
19 measures, with how each is measured Open ↓
| Measure | IWC | VIOG | Edge | How it is measured |
|---|---|---|---|---|
| Return | ||||
| Total return | +434.7% | +527.1% | VIOG | Price change plus distributions, reinvested. |
| Annualized | +10.9% | +12.0% | VIOG (slight) | Total return as a yearly rate. |
| Price return | +339.7% | +438.4% | VIOG | Price change alone, distributions left out. |
| Risk | ||||
| Volatility | 22.4% | 20.5% | VIOG (slight) | Spread of weekly returns, annualized. Lower is steadier. |
| Downside deviation | 15.4% | 13.9% | VIOG (slight) | Like volatility, counting only weeks below the Treasury bill rate. |
| Max drawdown | −45.2% | −41.3% | VIOG (slight) | Deepest fall from a high to the low after it. |
| Upside capture | 118.0% | 98.9% | Share of its benchmark's rise caught in the weeks it rose. | |
| Downside capture | 111.7% | 99.5% | Share of its benchmark's fall taken in the weeks it fell. Lower is better. | |
| Beta | 1.16 | 0.99 | Not an edge | How far it moves for each 1% its benchmark moves. |
| R squared | 0.76 | 0.99 | Not an edge | Share of its weekly moves its benchmark explains. |
| Risk-adjusted | ||||
| Sharpe | 0.50 | 0.58 | VIOG | Return above Treasury bills per unit of volatility. |
| Sortino | 0.73 | 0.85 | VIOG | Return above Treasury bills per unit of downside deviation. |
| Treynor | 0.070 | 0.120 | Return above Treasury bills per unit of beta. | |
| Calmar | 0.24 | 0.29 | VIOG | Annualized return divided by the max drawdown. |
| Against the benchmark | ||||
| Benchmark | IWV | IJT | The ETF each fund is measured against. | |
| Alpha | −3.6% a year | +0.2% a year | Not significant | Yearly return beyond what its beta to the benchmark predicts. |
| Alpha t-stat | −1.41 | 0.29 | Not an edge | How sure the alpha is. Below 2, it could be chance. |
| Alpha range | −8.5% to +1.4% | −0.9% to +1.2% | Includes zero | The 95% range for the yearly alpha. |
| Information ratio | −0.16 | 0.01 | Return against its benchmark per unit of tracking error. | |
| Tracking error | 12.0% | 2.1% | Not an edge | How far weekly returns stray from the benchmark, annualized. |
Computed by ETFIQ from Tiingo daily prices and ETFIQ's distribution records, 840 weekly returns. Cash rate: the 13-week Treasury bill.
What they share
By the books each fund has filed, IWC and VIOG hold 2% of their money in the same securities at the same weight. Holdings dated Sep 30, 2026 and Oct 27, 2026.
half
2% in common
Only in one fund ↓
Side by side
IWC and VIOG on the fields both publish, as of Oct 28, 2026. Source: ETFIQ.
IWC and VIOG are built for the same job. How do they differ in cost, holdings and results?
- What each follows. IWC follows Russell Microcap Index and VIOG follows S&P SmallCap 600 Growth Index.
- Holdings in common. 2% of the weight is in the same securities (holdings dated Oct 27, 2026 and Sep 30, 2026).
- Number of holdings. IWC holds 1,365 positions and VIOG holds 351.
Data as of Oct 28, 2026.
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Over the year to Oct 28, 2026 it returned +16.5% with distributions reinvested, against +13.3% for its benchmark, the Russell 3000 Index.
IWC tracks the Russell Microcap. The prospectus expense ratio is 0.60% a year. By its holdings published by its issuer for Oct 27, 2026, 92% of the fund by weight is stocks the S&P 500 also holds, across 1,365 positions, with the top ten at 5.9%. It sat 9.5% below its high of Aug 14, 2026 on Oct 28, 2026.
VIOG
VIOG tracks an index. Over the year to Oct 28, 2026 it returned +15.8% with distributions reinvested, against +15.4% for its benchmark, the S&P SmallCap 600 Growth Index. The prospectus expense ratio is 0.10% a year. By its holdings published by its issuer as of Sep 30, 2026, 0% of the fund by weight is stocks the S&P 500 also holds, across 351 positions, with the top ten at 9.9%. It sat 8.2% below its high of Aug 4, 2026 on Oct 28, 2026.
Questions people ask
- Which returned more over the last year, IWC or VIOG?
- In the year to Oct 28, 2026, with distributions reinvested, IWC returned +16.5% and VIOG +15.8%.
- Which is cheaper, IWC or VIOG?
- VIOG is cheaper, by 0.50 percentage points a year. That is about $50 on $10,000 held for a year. Fees come from each fund's prospectus.
Links are sources, not endorsements. A comparison is not a recommendation.
How this is computed
Overlap adds up the smaller of the two weights for each security both funds hold.
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ETFIQ, IWC against VIOG, data as of Oct 28, 2026. https://etfiq.com/compare/any/iwc-vs-viog
ETFIQ. (Oct 28, 2026). IWC against VIOG. Retrieved from https://etfiq.com/compare/any/iwc-vs-viog
[IWC against VIOG (ETFIQ, Oct 28, 2026)](https://etfiq.com/compare/any/iwc-vs-viog)
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