VBK vs VOX: Holdings Overlap
VBKVanguard Small-cap Growth Index Fund
Vanguard · 551 holdings · $24.3B · as of 2026-03-31
VOXVanguard Communication Services Index Fund
Vanguard · 114 holdings · $5.9B · as of 2026-05-31
Holdings snapshots are 61 days apart (VBK: 2026-03-31, VOX: 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 VOX?
Vanguard Small-cap Growth Index Fund (VBK, by Vanguard) holds 551 positions; Vanguard Communication Services Index Fund (VOX, by Vanguard) holds 114. They have 26 holdings in common, and by portfolio weight the two funds are 4.0% identical. In practical terms the pair is essentially distinct, holding almost none of the same securities.
- Overlap by Weight
- 4.0%Sum of the smaller weight of each shared holding
- Shared Holdings
- 26VBK holds 551 · VOX holds 114
- Weight in Shared Holdings
- VBK 4%·VOX 10%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
525 of 551 positions (95.8% of the fund) are not held by VOX. Showing the top 30 by weight.
Only in VOX
88 of 114 positions (89.4% of the fund) are not held by VBK. Showing the top 30 by weight.
Sector Breakdown
| Sector | VBK | VOX |
|---|---|---|
| Communication Services | 4.2% | 99.7% |
| Industrials | 24.6% | 0.0% |
| Information Technology | 21.6% | 0.0% |
| Health Care | 16.1% | 0.0% |
| Consumer Discretionary | 9.9% | 0.0% |
| Other Sectors | 22.4% | 0.0% |
| 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 VOX).
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% |
| VOX | -1.3% | -2.7% | +8.9% | +20.4% | +6.4% | +8.3% | 1.05% |
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 VOX →
Shared Holdings(26)
The top 10 shared positions account for 79% of the overlap, led by ASTS, FWONK and ROKU.
 ASTSAST SpaceMobile, Inc., Class A | 0.72% | 1.42% | 0.72% |
|---|---|---|---|
 FWONKLiberty Media Corp.-Liberty Formula One, Class C | 0.63% | 1.16% | 0.63% |
 ROKURoku, Inc., Class A | 0.41% | 1.02% | 0.41% |
 ECHOEchoStar Corp., Class A | 0.26% | 1.09% | 0.26% |
 MTCHMatch Group Inc COM | 0.24% | 0.49% | 0.24% |
 TKOTKO Group Holdings, Inc., Class A | 0.21% | 0.83% | 0.21% |
 MSGSMadison Square Garden Sports Corp. CL A | 0.19% | 0.35% | 0.19% |
 PINSPinterest, Inc., Class A | 0.17% | 0.72% | 0.17% |
 TTDTrade Desk, Inc. (The), Class A | 0.17% | 0.57% | 0.17% |
 WMGWarner Music Group Corporation COM CL A | 0.12% | 0.25% | 0.12% |
 GSATGlobalstar Inc COM NEW | 0.11% | 0.26% | 0.11% |
 LUMNLumen Technologies Inc COM | 0.11% | 0.64% | 0.11% |
 CARGCargurus, Inc., Class A | 0.09% | 0.15% | 0.09% |
 IRDMIridium Communications, Inc. COM | 0.08% | 0.29% | 0.08% |
 MSGEMadison Square Garden Entertainment Corp New COM CL A | 0.08% | 0.16% | 0.08% |
 UNITUniti Group LLC COM SHS | 0.08% | 0.10% | 0.08% |
 SPHRSphere Entertainment Co., Class A | 0.05% | 0.21% | 0.05% |
 CNKCinemark Holdings Inc. COM | 0.05% | 0.18% | 0.05% |
 YELPYelp Inc CL A | 0.05% | 0.08% | 0.05% |
 DVDoubleVerify Holdings Inc COM | 0.05% | 0.08% | 0.05% |
 CCOICogent Communications Holdings, Inc. COM NEW | 0.03% | 0.05% | 0.03% |
 GLIBKGCI Liberty, Inc., Class C | 0.02% | 0.05% | 0.02% |
 TRIPTripadvisor Inc COM | 0.02% | 0.07% | 0.02% |
 RUMRumble, Inc., Class A | 0.01% | 0.04% | 0.01% |
 AMCAMC Entertainment Holdings, Inc., Class A | 0.01% | 0.05% | 0.01% |
Frequently Asked Questions
How much do VBK and VOX overlap?
VBK and VOX overlap by 4.0% of portfolio weight. They share 26 holdings (VBK holds 551 positions and VOX holds 114), based on each fund's latest SEC-reported holdings.
Is it redundant to own both VBK and VOX?
The two portfolios are 4.0% identical by weight. Owning both is genuine diversification: the funds hold almost none of the same securities.
What are the biggest shared holdings of VBK and VOX?
The largest positions held by both funds are ASTS, FWONK, ROKU, ECHO and MTCH. Together the top 10 shared positions account for 79% of the total overlap.
What does VBK own that VOX doesn't?
525 positions (95.8% of VBK) are unique to VBK, led by FTI, CIEN and CASY. In the other direction, 88 positions (89.4% of VOX) are unique to VOX.