VBK vs VIOG: Holdings Overlap
VBKVanguard Small-cap Growth Index Fund
Vanguard · 551 holdings · $24.3B · as of 2026-03-31
VIOGVanguard S&P Small-cap 600 Growth Index Fund
Vanguard · 342 holdings · $1.1B · as of 2026-05-31
Holdings snapshots are 61 days apart (VBK: 2026-03-31, VIOG: 2026-05-31). 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 VBK and VIOG?
Vanguard Small-cap Growth Index Fund (VBK, by Vanguard) holds 551 positions; Vanguard S&P Small-cap 600 Growth Index Fund (VIOG, by Vanguard) holds 342. They have 139 holdings in common, and by portfolio weight the two funds are 13.5% identical. In practical terms the pair is lightly overlapping, with most of each portfolio distinct.
- Overlap by Weight
- 13.5%Sum of the smaller weight of each shared holding
- Shared Holdings
- 139VBK holds 551 · VIOG holds 342
- Weight in Shared Holdings
- VBK 13%·VIOG 49%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 VBK
412 of 551 positions (86.2% of the fund) are not held by VIOG. Showing the top 30 by weight.
Sector Breakdown
| Sector | VBK | VIOG |
|---|---|---|
| Industrials | 24.6% | 21.8% |
| Information Technology | 21.6% | 18.4% |
| Health Care | 16.1% | 14.7% |
| Financials | 6.1% | 14.2% |
| Consumer Discretionary | 9.9% | 10.8% |
| Other Sectors | 20.6% | 19.9% |
| Unclassified | 0.9% | 0.0% |
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 (1% of VBK, 0% of VIOG).
Performance
| Fund | 1M | YTD | 1Y | 3Y (ann.) | 5Y (ann.) | 10Y (ann.) | Yield |
|---|---|---|---|---|---|---|---|
| VBK | +1.8% | +19.6% | +29.4% | +16.6% | +5.3% | +11.4% | 0.42% |
| VIOG | +1.1% | +25.9% | +33.8% | +15.2% | +6.8% | +11.2% | 0.75% |
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 VBK vs VIOG →
Shared Holdings(139)
The top 10 shared positions account for 17% of the overlap, led by FORM, ESE and SMTC.
 FORMFormfactor Inc COM | 0.25% | 1.14% | 0.25% |
|---|---|---|---|
 ESEESCO Technologies Inc. COM | 0.24% | 0.89% | 0.24% |
 SMTCSemtech Corporation COM | 0.24% | 1.17% | 0.24% |
 AWIArmstrong World Industries, Inc. COM | 0.24% | 0.81% | 0.24% |
 KRYSKrystal Biotech Inc COM | 0.23% | 0.94% | 0.23% |
 PTGXProtagonist Therapeutics Inc COM | 0.22% | 0.69% | 0.22% |
 JBTMJBT Marel Corp. COM | 0.22% | 0.83% | 0.22% |
 FSSFederal Signal Corp. COM | 0.22% | 0.77% | 0.22% |
 EPRTEssential Properties Realty Trust Inc. COM | 0.21% | 0.51% | 0.21% |
 NENoble Corporation PLC ORD SHS A | 0.21% | 0.37% | 0.21% |
 EATBrinker International, Inc. COM | 0.21% | 0.73% | 0.21% |
 IBPInstalled Building Products Inc COM | 0.20% | 0.56% | 0.20% |
 GKOSGlaukos Corp. COM | 0.20% | 0.48% | 0.20% |
 ALKSAlkermes PLC COM USD0.01 | 0.20% | 0.82% | 0.20% |
 MKTXMarketAxess Holdings Inc. COM | 0.20% | 0.31% | 0.20% |
 MSGSMadison Square Garden Sports Corp. CL A | 0.19% | 0.80% | 0.19% |
 PTCTPTC Therapeutics, Inc. COM | 0.19% | 0.70% | 0.19% |
 RHPRyman Hospitality Properties Inc COM | 0.18% | 0.86% | 0.18% |
 BCPCBalchem Corp COM | 0.18% | 0.35% | 0.18% |
 SNEXStoneX Group Inc COM | 0.18% | 0.94% | 0.18% |
 TGTXTG Therapeutics Inc COM | 0.17% | 0.61% | 0.17% |
 CWSTCasella Waste Systems, Inc., Class A | 0.17% | 0.61% | 0.17% |
 ETSYEtsy Inc COM | 0.15% | 0.79% | 0.15% |
 BFAMBright Horizons Family Solutions Inc Del COM | 0.15% | 0.28% | 0.15% |
 BOOTBoot Barn Holdings Inc COM | 0.15% | 0.61% | 0.15% |
Frequently Asked Questions
How much do VBK and VIOG overlap?
VBK and VIOG overlap by 13.5% of portfolio weight. They share 139 holdings (VBK holds 551 positions and VIOG holds 342), based on each fund's latest SEC-reported holdings.
Is it redundant to own both VBK and VIOG?
The two portfolios are 13.5% identical by weight. Owning both is not redundant. Most of each portfolio is distinct, so the funds can serve different roles.
What are the biggest shared holdings of VBK and VIOG?
The largest positions held by both funds are FORM, ESE, SMTC, AWI and KRYS. Together the top 10 shared positions account for 17% of the total overlap.
What does VBK own that VIOG doesn't?
412 positions (86.2% of VBK) are unique to VBK, led by FTI, CIEN and CASY. In the other direction, 203 positions (50.7% of VIOG) are unique to VIOG.