VIOO vs SLYG: Holdings Overlap
VIOOVanguard S&P Small-cap 600 Index Fund
Vanguard · 603 holdings · $4.4B · as of 2026-05-31
SLYGState Street® SPDR® S&P 600™ Small Cap Growth ETF
State Street (SPDR) · 349 holdings · $5.3B · as of 2026-08-06
Holdings snapshots are 67 days apart (VIOO: 2026-05-31, SLYG: 2026-08-06). Weights and index membership change between snapshots, so the true current overlap is typically higher than shown. For funds tracking the same index, the gap can be 5–15 points.
How similar are VIOO and SLYG?
Vanguard S&P Small-cap 600 Index Fund (VIOO, by Vanguard) holds 603 positions; State Street® SPDR® S&P 600™ Small Cap Growth ETF (SLYG, by State Street (SPDR)) holds 349. They have 326 holdings in common, and by portfolio weight the two funds are 58.1% identical. In practical terms the pair is moderately overlapping; they share a meaningful core, but each fund adds distinct exposure.
- Overlap by Weight
- 58.1%Sum of the smaller weight of each shared holding
- Shared Holdings
- 326VIOO holds 603 · SLYG holds 349
- Weight in Shared Holdings
- VIOO 60%·SLYG 94%Share of each fund's weight in stocks both funds own
Based on each fund's latest official holdings. How is this calculated?
What makes each fund different
Only in VIOO
277 of 603 positions (39.5% of the fund) are not held by SLYG. Showing the top 30 by weight.
Only in SLYG
23 of 349 positions (6.0% of the fund) are not held by VIOO.
Sector Breakdown
| Sector | VIOO | SLYG |
|---|---|---|
| Industrials | 17.2% | 21.9% |
| Financials | 17.6% | 15.7% |
| Information Technology | 15.9% | 13.8% |
| Health Care | 11.0% | 15.0% |
| Consumer Discretionary | 12.9% | 12.0% |
| Other Sectors | 25.2% | 20.6% |
| Unclassified | 0.0% | 0.9% |
Share of each fund's portfolio weight by GICS-style sector, compiled from issuer fund data and our own classification of the holdings, not the issuers' published sector charts. “Unclassified” is weight we could not classify (0% of VIOO, 1% of SLYG).
Performance
| Fund | 1M | YTD | 1Y | 3Y (ann.) | 5Y (ann.) | 10Y (ann.) | Yield |
|---|---|---|---|---|---|---|---|
| VIOO | +2.4% | +24.4% | +36.3% | +14.6% | +7.7% | +10.9% | 1.09% |
| SLYG | +1.2% | +25.9% | +33.5% | +15.2% | +6.7% | +11.2% | 0.64% |
Total returns including dividends, from adjusted daily closes as of 2026-08-07. 3Y/5Y/10Y are annualized. Yield is trailing-12-month distributions over the last close. Past performance does not predict future results.
Project the growth of $10,000 in VIOO vs SLYG →
Shared Holdings(326)
The top 10 shared positions account for 9% of the overlap, led by VSAT, FORM and AGX.
 VSATViaSat, Inc. COM | 0.64% | 1.24% | 0.64% |
|---|---|---|---|
 FORMFormfactor Inc COM | 0.57% | 1.00% | 0.57% |
 AGXArgan Inc COM | 0.54% | 0.92% | 0.54% |
 QRVOQorvo Inc COM | 0.51% | 0.53% | 0.51% |
 ESIElement Solutions Inc COM | 0.57% | 0.49% | 0.49% |
 POWLPowell Industries Inc. COM | 0.47% | 0.66% | 0.47% |
 SNEXStoneX Group Inc COM | 0.47% | 0.79% | 0.47% |
 ECGEverus Construction Group Inc. COM | 0.45% | 0.80% | 0.45% |
 ESEESCO Technologies Inc. COM | 0.44% | 0.95% | 0.44% |
 RHPRyman Hospitality Properties Inc COM | 0.43% | 0.88% | 0.43% |
 MYRGMYR Group, Inc. | 0.42% | 0.58% | 0.42% |
 JBTMJBT Marel Corp. COM | 0.41% | 0.71% | 0.41% |
 RALRalliant Corp. COM | 0.41% | 0.42% | 0.41% |
 ZWSZurn Elkay Water Solutions Corporation COM | 0.41% | 0.86% | 0.41% |
 TRNOTerreno Realty Corporation COM | 0.40% | 0.57% | 0.40% |
 AWIArmstrong World Industries, Inc. COM | 0.40% | 0.88% | 0.40% |
 PRIMPrimoris Services Corp. COM | 0.40% | 0.49% | 0.40% |
 MSGSMadison Square Garden Sports Corp. CL A | 0.40% | 0.79% | 0.40% |
 ETSYEtsy Inc COM | 0.39% | 0.87% | 0.39% |
 CORTCorcept Therapeutics Inc. COM | 0.38% | 1.15% | 0.38% |
 FSSFederal Signal Corp. COM | 0.38% | 0.87% | 0.38% |
 NPOEnpro Inc COM | 0.38% | 0.79% | 0.38% |
 EPRTEssential Properties Realty Trust Inc. COM | 0.38% | 0.50% | 0.38% |
 KGSKodiak Gas Services Inc. COM | 0.37% | 0.62% | 0.37% |
 ACAArcosa Inc COM | 0.37% | 0.50% | 0.37% |
Showing the top 250 of 326 shared holdings by overlap weight.
Frequently Asked Questions
How much do VIOO and SLYG overlap?
VIOO and SLYG overlap by 58.1% of portfolio weight. They share 326 holdings (VIOO holds 603 positions and SLYG holds 349), based on each fund's latest SEC-reported holdings.
Is it redundant to own both VIOO and SLYG?
The two portfolios are 58.1% identical by weight. Owning both is defensible: they share a meaningful core, but each fund adds exposure the other lacks.
What are the biggest shared holdings of VIOO and SLYG?
The largest positions held by both funds are VSAT, FORM, AGX, QRVO and ESI. Together the top 10 shared positions account for 9% of the total overlap.
What does VIOO own that SLYG doesn't?
277 positions (39.5% of VIOO) are unique to VIOO, led by SANM, SMTC and VIAV. In the other direction, 23 positions (6.0% of SLYG) are unique to SLYG.