SPY vs SUB: Holdings Overlap
SPYState Street® SPDR® S&P 500® ETF Trust
State Street (SPDR) · 504 holdings · $812.0B · as of 2026-08-06
SUBiShares Short-Term National Muni Bond ETF
iShares · 2873 holdings · $11.3B · as of 2026-05-31
Holdings snapshots are 67 days apart (SPY: 2026-08-06, SUB: 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 SPY and SUB?
State Street® SPDR® S&P 500® ETF Trust (SPY, by State Street (SPDR)) holds 504 positions; iShares Short-Term National Muni Bond ETF (SUB, by iShares) holds 2873. They have 0 holdings in common, and by portfolio weight the two funds are 0.0% identical. In practical terms the pair is essentially distinct, holding almost none of the same securities.
- Overlap by Weight
- 0.0%Sum of the smaller weight of each shared holding
- Shared Holdings
- 0SPY holds 504 · SUB holds 2873
- Weight in Shared Holdings
- SPY 0%·SUB 0%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
504 of 504 positions (99.9% of the fund) are not held by SUB. Showing the top 30 by weight.
Only in SUB
2873 of 2873 positions (94.9% of the fund) are not held by SPY. Showing the top 30 by weight.
- New Jersey Economic Development Authority, Series 2023RRR0.37%
- State of California0.27%
- Empire State Development Corp., Series 2022A0.25%
- University of California, Series 2025CD0.25%
- New Jersey Turnpike Authority, Series 2025B0.25%
- State of California0.24%
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% |
| SUB | +0.2% | +1.1% | +2.0% | +3.1% | +1.5% | +1.5% | 2.56% |
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 SUB →
Shared Holdings(0)
These two funds have no holdings in common.
Frequently Asked Questions
How much do SPY and SUB overlap?
SPY and SUB overlap by 0.0% of portfolio weight. They share 0 holdings (SPY holds 504 positions and SUB holds 2873), based on each fund's latest SEC-reported holdings.
Is it redundant to own both SPY and SUB?
The two portfolios are 0.0% identical by weight. Owning both is genuine diversification: the funds hold almost none of the same securities.
What does SPY own that SUB doesn't?
504 positions (99.9% of SPY) are unique to SPY, led by NVDA, AAPL and MSFT. In the other direction, 2873 positions (94.9% of SUB) are unique to SUB.