SPY vs VBK: Holdings Overlap
SPYState Street® SPDR® S&P 500® ETF Trust
State Street (SPDR) · 504 holdings · $812.0B · as of 2026-08-06
VBKVanguard Small-cap Growth Index Fund
Vanguard · 551 holdings · $24.3B · as of 2026-03-31
Holdings snapshots are 128 days apart (SPY: 2026-08-06, VBK: 2026-03-31). 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 SPY and VBK?
State Street® SPDR® S&P 500® ETF Trust (SPY, by State Street (SPDR)) holds 504 positions; Vanguard Small-cap Growth Index Fund (VBK, by Vanguard) holds 551. They have 35 holdings in common, and by portfolio weight the two funds are 1.1% identical. In practical terms the pair is essentially distinct, holding almost none of the same securities.
- Overlap by Weight
- 1.1%Sum of the smaller weight of each shared holding
- Shared Holdings
- 35SPY holds 504 · VBK holds 551
- Weight in Shared Holdings
- SPY 1%·VBK 15%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 SPY
469 of 504 positions (98.8% of the fund) are not held by VBK. Showing the top 30 by weight.
Sector Breakdown
| Sector | SPY | VBK |
|---|---|---|
| Information Technology | 37.6% | 21.6% |
| Industrials | 8.8% | 24.6% |
| Health Care | 8.9% | 16.1% |
| Financials | 12.3% | 6.1% |
| Consumer Discretionary | 9.3% | 9.9% |
| Other Sectors | 23.1% | 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 SPY, 1% of VBK).
Performance
| Fund | 1M | YTD | 1Y | 3Y (ann.) | 5Y (ann.) | 10Y (ann.) | Yield |
|---|---|---|---|---|---|---|---|
| SPY | +3.4% | +14.0% | +23.7% | +21.2% | +13.3% | +15.3% | 0.97% |
| VBK | +1.8% | +19.6% | +29.4% | +16.6% | +5.3% | +11.4% | 0.42% |
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 SPY vs VBK →
Shared Holdings(35)
The top 10 shared positions account for 58% of the overlap, led by COHR, LITE and FIX.
 COHRCoherent Corp COM | 0.10% | 0.74% | 0.10% |
|---|---|---|---|
 LITELumentum Holdings Inc. COM | 0.10% | 0.84% | 0.10% |
 FIXComfort Systems USA Inc. COM | 0.09% | 0.81% | 0.09% |
 CIENCiena Corporation COM NEW | 0.09% | 0.92% | 0.09% |
 EMEEmcor Group Inc COM | 0.05% | 0.55% | 0.05% |
 EQTEQT Corporation COM | 0.05% | 0.66% | 0.05% |
 CASYCasey'S General Stores Inc. COM | 0.05% | 0.90% | 0.05% |
 HUBBHubbell Incorporated COM | 0.04% | 0.22% | 0.04% |
 FSLRFirst Solar Inc COM | 0.04% | 0.34% | 0.04% |
 EXEExpand Energy Corp. COM | 0.03% | 0.44% | 0.03% |
 TPLTexas Pacific Land Corporation COM | 0.03% | 0.46% | 0.03% |
 INCYIncyte Corporation. COM | 0.03% | 0.53% | 0.03% |
 PTCPTC Inc COM | 0.03% | 0.57% | 0.03% |
 NDSNNordson Corp COM | 0.02% | 0.47% | 0.02% |
 RLRalph Lauren Corp., Class A | 0.02% | 0.21% | 0.02% |
 HSTHost Hotels & Resorts Inc COM | 0.02% | 0.22% | 0.02% |
 ALBAlbemarle Corp COM | 0.02% | 0.35% | 0.02% |
 DECKDeckers Outdoor Corp. COM | 0.02% | 0.47% | 0.02% |
 LIILennox International Inc. COM | 0.02% | 0.48% | 0.02% |
 TYLTyler Technologies Inc. COM | 0.02% | 0.25% | 0.02% |
 GNRCGenerac Holdings Inc. COM | 0.02% | 0.38% | 0.02% |
 GDDYGoDaddy, Inc., Class A | 0.02% | 0.18% | 0.02% |
 TKOTKO Group Holdings, Inc., Class A | 0.02% | 0.21% | 0.02% |
 ECHOEchoStar Corp., Class A | 0.02% | 0.26% | 0.02% |
 UDRUDR Inc COM | 0.02% | 0.37% | 0.02% |
Frequently Asked Questions
How much do SPY and VBK overlap?
SPY and VBK overlap by 1.1% of portfolio weight. They share 35 holdings (SPY holds 504 positions and VBK holds 551), based on each fund's latest SEC-reported holdings.
Is it redundant to own both SPY and VBK?
The two portfolios are 1.1% identical by weight. Owning both is genuine diversification: the funds hold almost none of the same securities.
What are the biggest shared holdings of SPY and VBK?
The largest positions held by both funds are COHR, LITE, FIX, CIEN and EME. Together the top 10 shared positions account for 58% of the total overlap.
What does SPY own that VBK doesn't?
469 positions (98.8% of SPY) are unique to SPY, led by NVDA, AAPL and MSFT. In the other direction, 516 positions (85.2% of VBK) are unique to VBK.