VIOO is a Small & Mid-Cap ETF from Vanguard holding 603 positions as of May 31, 2026, with $4.4B in assets and a 0.07% net expense ratio. Its largest positions are SANM (0.8%), SMTC (0.8%) and VIAV (0.7%); the top 10 holdings account for 6.3% of the portfolio. By sector it leans Financials (17.6%) and Industrials (17.2%). It yields 1.09% on a trailing-12-month basis.
- Issuer
- Vanguard
- Holdings
- 603
- Net Assets
- $4.4BETF assets as of 2026-08-10
- Expense Ratio
- 0.07%per latest SEC prospectus filing
- TTM Yield
- 1.09%trailing 12-month distributions
Performance
- 1M
- +2.4%
- YTD
- +24.4%
- 1Y
- +36.3%
- 3Y (ann.)
- +14.6%
- 5Y (ann.)
- +7.7%
- 10Y (ann.)
- +10.9%
A $10,000 investment 10 years ago would be worth $28,165 today at the 10Y annualized rate. This is a backward-looking illustration, not a forecast. Project its future growth →
Total returns including dividends as of 2026-08-07. 3Y/5Y/10Y annualized. Past performance does not predict future results.
Sector Breakdown
| Financials | 17.6% |
|---|---|
| Industrials | 17.2% |
| Information Technology | 15.9% |
| Consumer Discretionary | 12.9% |
| Health Care | 11.0% |
| Other Sectors | 25.2% |
Top 25 Holdings
| # | Holding | Weight |
|---|---|---|
| 1 |  SANMSanmina Corporation | 0.83% |
| 2 |  SMTCSemtech Corporation COM | 0.83% |
| 3 |  VIAVViavi Solutions Inc COM | 0.66% |
| 4 |  VSATViaSat, Inc. COM | 0.64% |
| 5 |  LUMNLumen Technologies Inc COM | 0.61% |
| 6 |  FORMFormfactor Inc COM | 0.57% |
| 7 |  ESIElement Solutions Inc COM | 0.57% |
| 8 |  AGXArgan Inc COM | 0.54% |
| 9 |  ENPHEnphase Energy Inc COM | 0.53% |
| 10 |  MOHMolina Healthcare, Inc. COM | 0.53% |
| 11 |  QRVOQorvo Inc COM | 0.51% |
| 12 |  EMNEastman Chemical Company COM | 0.51% |
| 13 |  MTCHMatch Group Inc COM | 0.50% |
| 14 |  BTSGBrightSpring Health Services Inc. COM | 0.48% |
| 15 |  POWLPowell Industries Inc. COM | 0.47% |
| 16 |  KRYSKrystal Biotech Inc COM | 0.47% |
| 17 |  SNEXStoneX Group Inc COM | 0.47% |
| 18 |  ECGEverus Construction Group Inc. COM | 0.45% |
| 19 |  ESEESCO Technologies Inc. COM | 0.44% |
| 20 |  MXLMaxlinear Inc COM | 0.44% |
| 21 |  JXNJackson Financial, Inc., Class A | 0.43% |
| 22 |  RHPRyman Hospitality Properties Inc COM | 0.43% |
| 23 |  MYRGMYR Group, Inc. | 0.42% |
| 24 |  PLXSPlexus Corp COM | 0.42% |
| 25 |  JBTMJBT Marel Corp. COM | 0.41% |
Showing the top 25 of 603 holdings. See the full VIOO holdings list →
VIOO alternatives
The closest Small & Mid-Cap ETFs to VIOO by portfolio overlap — the share of weight both funds hold in the same securities.
| Fund | Overlap | Expense | Assets | |
|---|---|---|---|---|
 IJRiShares Core S&P Small-Cap ETF | 89% | 0.06%cheaper | $113.4B | Compare → |
 SPSMState Street® SPDR® Portfolio S&P 600™ Small Cap ETF | 87% | 0.03%cheaper | $17.3B | Compare → |
 VIOVVanguard S&P Small-cap 600 Value Index Fund | 64% | 0.1%pricier | $1.9B | Compare → |
 VIOGVanguard S&P Small-cap 600 Growth Index Fund | 64% | 0.1%pricier | $1.1B | Compare → |
 IJSiShares S&P Small-Cap 600 Value ETF | 61% | 0.18%pricier | $8.4B | Compare → |
 SLYVState Street® SPDR® S&P 600™ Small Cap Value ETF | 61% | 0.15%pricier | $5.1B | Compare → |
 IJTiShares S&P Small-Cap 600 Growth ETF | 61% | 0.18%pricier | $8.5B | Compare → |
 SLYGState Street® SPDR® S&P 600™ Small Cap Growth ETF | 58% | 0.15%pricier | $5.3B | Compare → |
Frequently Asked Questions
What is VIOO's expense ratio?
VIOO has a net expense ratio of 0.07%, per its latest SEC prospectus filing. That works out to about $7 a year on a $10,000 investment.
How many holdings does VIOO have?
VIOO held 603 positions as of May 31, 2026, per its latest official holdings data.
What are VIOO's top 10 holdings?
VIOO's largest positions are SANM (0.8%), SMTC (0.8%), VIAV (0.7%), VSAT (0.6%), LUMN (0.6%), FORM (0.6%), ESI (0.6%), AGX (0.5%), ENPH (0.5%), MOH (0.5%). Together they account for 6.3% of the portfolio.
What is VIOO's dividend yield?
VIOO yields 1.09% based on its trailing 12-month distributions, as of Aug 7, 2026.
How big is VIOO?
VIOO has $4.4B in assets as of Aug 10, 2026.
What are good alternatives to VIOO?
By portfolio overlap, the closest Small & Mid-Cap ETFs to VIOO are IJR (89% overlap), SPSM (87% overlap), VIOV (64% overlap). Overlap measures the share of portfolio weight both funds hold in the same securities.