IGV vs SPY: Holdings Overlap
IGViShares Expanded Tech-Software Sector ETF
iShares · 112 holdings · $14.7B · as of 2026-03-31
SPYState Street® SPDR® S&P 500® ETF Trust
State Street (SPDR) · 504 holdings · $812.0B · as of 2026-08-06
Holdings snapshots are 128 days apart (IGV: 2026-03-31, SPY: 2026-08-06). 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 IGV and SPY?
iShares Expanded Tech-Software Sector ETF (IGV, by iShares) holds 112 positions; State Street® SPDR® S&P 500® ETF Trust (SPY, by State Street (SPDR)) holds 504. They have 23 holdings in common, and by portfolio weight the two funds are 9.0% identical. In practical terms the pair is lightly overlapping, with most of each portfolio distinct.
- Overlap by Weight
- 9.0%Sum of the smaller weight of each shared holding
- Shared Holdings
- 23IGV holds 112 · SPY holds 504
- Weight in Shared Holdings
- IGV 81%·SPY 9%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 IGV
89 of 112 positions (19.2% of the fund) are not held by SPY. Showing the top 30 by weight.
Sector Breakdown
| Sector | IGV | SPY |
|---|---|---|
| Information Technology | 90.6% | 37.6% |
| Financials | 0.2% | 12.3% |
| Communication Services | 8.2% | 9.7% |
| Consumer Discretionary | 0.2% | 9.3% |
| Health Care | 0.0% | 8.9% |
| Other Sectors | 0.2% | 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 |
|---|---|---|---|---|---|---|---|
| IGV | +9.1% | -2.8% | -6.3% | +13.8% | +4.6% | +16.7% | 0.02% |
| SPY | +3.4% | +14.0% | +23.7% | +21.2% | +13.3% | +15.3% | 0.97% |
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 IGV vs SPY →
Shared Holdings(23)
The top 10 shared positions account for 90% of the overlap, led by MSFT, PLTR and PANW.
 MSFTMicrosoft Corp. COM | 8.36% | 5.60% | 5.60% |
|---|---|---|---|
 PLTRPalantir Technologies, Inc., Class A | 8.82% | 0.54% | 0.54% |
 PANWPalo Alto Networks Inc COM | 5.48% | 0.44% | 0.44% |
 ORCLOracle Corp. COM | 8.24% | 0.37% | 0.37% |
 CRWDCrowdstrike Holdings, Inc., Class A | 4.21% | 0.32% | 0.32% |
 CRMSalesforce Inc. COM | 7.40% | 0.23% | 0.23% |
 NOWServicenow Inc COM | 4.38% | 0.18% | 0.18% |
 ADBEAdobe Inc COM | 4.27% | 0.16% | 0.16% |
 FTNTFortinet Inc COM | 2.21% | 0.15% | 0.15% |
 CDNSCadence Design Systems, Inc. COM | 3.24% | 0.14% | 0.14% |
 APPAppLovin Corp., Class A | 4.56% | 0.14% | 0.14% |
 INTUIntuit Inc COM | 4.75% | 0.13% | 0.13% |
 SNPSSynopsys Inc COM | 3.25% | 0.12% | 0.12% |
 DDOGDatadog, Inc., Class A | 1.66% | 0.11% | 0.11% |
 ADSKAutodesk Inc COM | 2.17% | 0.08% | 0.08% |
 TTWOTake-Two Interactive Software Inc. COM | 1.47% | 0.06% | 0.06% |
 ROPRoper Technologies Inc COM | 1.61% | 0.06% | 0.06% |
 WDAYWorkday, Inc., Class A | 1.18% | 0.05% | 0.05% |
 FICOFair Isaac Corporation COM | 1.08% | 0.04% | 0.04% |
 PTCPTC Inc COM | 0.73% | 0.03% | 0.03% |
 GENGen Digital Inc COM | 0.44% | 0.02% | 0.02% |
 TRMBTrimble Inc COM | 0.66% | 0.02% | 0.02% |
 TYLTyler Technologies Inc. COM | 0.63% | 0.02% | 0.02% |
Frequently Asked Questions
How much do IGV and SPY overlap?
IGV and SPY overlap by 9.0% of portfolio weight. They share 23 holdings (IGV holds 112 positions and SPY holds 504), based on each fund's latest SEC-reported holdings.
Is it redundant to own both IGV and SPY?
The two portfolios are 9.0% 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 IGV and SPY?
The largest positions held by both funds are MSFT, PLTR, PANW, ORCL and CRWD. Together the top 10 shared positions account for 90% of the total overlap.
What does IGV own that SPY doesn't?
89 positions (19.2% of IGV) are unique to IGV, led by EA, MSTR and ZM. In the other direction, 481 positions (90.9% of SPY) are unique to SPY.