SPY vs SPLG: Holdings Overlap
SPYState Street® SPDR® S&P 500® ETF Trust
State Street (SPDR) · 504 holdings · $812.0B · as of 2026-08-06
SPLGState Street® SPDR® Portfolio S&P 500® ETF
State Street (SPDR) · 504 holdings · $157.4B · as of 2026-08-06
How similar are SPY and SPLG?
State Street® SPDR® S&P 500® ETF Trust (SPY, by State Street (SPDR)) holds 504 positions; State Street® SPDR® Portfolio S&P 500® ETF (SPLG, by State Street (SPDR)) holds 504. They have 504 holdings in common, and by portfolio weight the two funds are 99.9% identical. In practical terms the pair is essentially interchangeable, so holding both adds little diversification.
- Overlap by Weight
- 99.9%Sum of the smaller weight of each shared holding
- Shared Holdings
- 504SPY holds 504 · SPLG holds 504
- Weight in Shared Holdings
- SPY 100%·SPLG 100%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
Every position in SPY is also held by SPLG, so it brings nothing the other fund doesn’t already own.
Only in SPLG
Every position in SPLG is also held by SPY, so it brings nothing the other fund doesn’t already own.
Sector Breakdown
| Sector | SPY | SPLG |
|---|---|---|
| Information Technology | 37.6% | 37.6% |
| Financials | 12.3% | 12.3% |
| Communication Services | 9.7% | 9.7% |
| Consumer Discretionary | 9.3% | 9.3% |
| Health Care | 8.9% | 8.9% |
| Other Sectors | 22.1% | 22.1% |
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.
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% |
| SPLG | +3.4% | +14.1% | +23.7% | +21.3% | +13.4% | +15.4% | 1.00% |
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 SPLG →
Shared Holdings(504)
The top 10 shared positions account for 38% of the overlap, led by NVDA, AAPL and MSFT.
 NVDANVIDIA Corp. COM | 8.00% | 8.00% | 8.00% |
|---|---|---|---|
 AAPLApple Inc. COM | 6.92% | 6.92% | 6.92% |
 MSFTMicrosoft Corp. COM | 5.60% | 5.60% | 5.60% |
 AMZNAmazon.com, Inc. COM | 4.02% | 4.02% | 4.02% |
 GOOGLAlphabet Inc. CAP STK CL A | 3.16% | 3.16% | 3.16% |
 AVGOBroadcom Inc COM | 3.00% | 3.00% | 3.00% |
 GOOGAlphabet Inc. CAP STK CL C | 2.54% | 2.54% | 2.54% |
 METAMeta Platforms, Inc., Class A | 1.95% | 1.95% | 1.95% |
 MUMicron Technology Inc. COM | 1.50% | 1.50% | 1.50% |
 BRK-BBerkshire Hathaway, Inc., Class B | 1.45% | 1.45% | 1.45% |
 JPMJPMorgan Chase & Co. COM | 1.44% | 1.44% | 1.44% |
 LLYEli Lilly & Co. COM | 1.42% | 1.42% | 1.42% |
 TSLATesla Inc COM | 1.36% | 1.36% | 1.36% |
 AMDAdvanced Micro Devices Inc. COM | 1.20% | 1.20% | 1.20% |
 XOMEXXONMOBIL HOLDINGS CORP | 0.97% | 0.97% | 0.97% |
 JNJJohnson & Johnson COM | 0.93% | 0.93% | 0.93% |
 VVisa, Inc., Class A | 0.93% | 0.93% | 0.93% |
 WMTWalmart Inc COM | 0.74% | 0.74% | 0.74% |
 CSCOCisco Systems, Inc. COM | 0.72% | 0.72% | 0.72% |
 INTCIntel Corporation COM | 0.71% | 0.71% | 0.71% |
 MAMasterCard Incorporated CL A | 0.70% | 0.70% | 0.70% |
 ABBVAbbVie Inc. COM | 0.65% | 0.65% | 0.65% |
 COSTCostco Wholesale Corporation COM | 0.63% | 0.63% | 0.63% |
 AMATApplied Materials Inc. COM | 0.63% | 0.63% | 0.63% |
 BACBank of America Corp. COM | 0.62% | 0.62% | 0.62% |
Showing the top 250 of 504 shared holdings by overlap weight.
Frequently Asked Questions
How much do SPY and SPLG overlap?
SPY and SPLG overlap by 99.9% of portfolio weight. They share 504 holdings (SPY holds 504 positions and SPLG holds 504), based on each fund's latest SEC-reported holdings.
Is it redundant to own both SPY and SPLG?
The two portfolios are 99.9% identical by weight. Owning both is largely redundant: they are close to the same portfolio, so a second position mostly duplicates the first.
What are the biggest shared holdings of SPY and SPLG?
The largest positions held by both funds are NVDA, AAPL, MSFT, AMZN and GOOGL. Together the top 10 shared positions account for 38% of the total overlap.
What does SPY own that SPLG doesn't?
Nothing. Every position in SPY is also held by SPLG. In the other direction, 0 positions (0.0% of SPLG) are unique to SPLG.