SPY vs ITOT overlap
SPY and ITOT overlap 88.1% by weight, across 504 shared holdings. SPY is shown using IVV, which tracks the same index.
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SPY files no portfolio holdings with the SEC; shown using IVV, which tracks the same index, as of June 30, 2026.
Top shared holdings
| Holding | SPY | ITOT | Overlap |
|---|---|---|---|
| Nvidia Corp.NVDA | 7.51% | 6.63% | 6.63% |
| Apple Inc.AAPL | 6.58% | 5.81% | 5.81% |
| Microsoft Corp.MSFT | 4.29% | 3.79% | 3.79% |
| Amazon.COM Inc.AMZN | 3.61% | 3.19% | 3.19% |
| Alphabet Inc.-aGOOGL | 3.25% | 2.86% | 2.86% |
| Broadcom Inc.AVGO | 2.77% | 2.45% | 2.45% |
| Alphabet Inc.-CGOOG | 2.59% | 2.29% | 2.29% |
| Micron TechMU | 2.02% | 1.78% | 1.78% |
| META Platforms-aMETA | 1.92% | 1.69% | 1.69% |
| Tesla Inc.TSLA | 1.83% | 1.62% | 1.62% |
| ELI Lilly & CoLLY | 1.47% | 1.30% | 1.30% |
| ADV Micro DeviceAMD | 1.47% | 1.30% | 1.30% |
| Berkshire HATH-BBRK/B | 1.42% | 1.25% | 1.25% |
| JPMorgan ChaseJPM | 1.36% | 1.20% | 1.20% |
| Intel Corp.INTC | 1.02% | 0.90% | 0.90% |
Overlap by weight adds up the smaller weight of each holding the funds share, so 100% means identical portfolios. Long securities only: derivatives and cash vehicles are left out. Sources: SPY, IVV's SEC Form N-PORT, June 30, 2026; ITOT, SEC Form N-PORT, June 30, 2026.
Largest institutions holding both
| Firm | SPY | ITOT |
|---|---|---|
| JPMorgan Chase & Co | $35.3B | $291.6M |
| Jane Street Group, LLC | $33.1B | $16.8M |
| Morgan Stanley | $24.1B | $1.7B |
| Bank of America Corp. | $23.0B | $1.1B |
| Goldman Sachs Group Inc. | $23.5B | $45.3M |
| Wells Fargo & Company | $9.0B | $10.9B |
| BlackRock, Inc. | $1.6B | $14.1B |
| Northern Trust Corp. | $10.3B | $30.3M |
| UBS Group AG | $9.2B | $159.6M |
| Gotham Asset Management, LLC | $8.5B | $29.8M |
| LPL Financial LLC | $7.4B | $1.1B |
| Royal Bank of Canada | $6.8B | $187.5M |
| Bank of Montreal | $4.8B | $13.5M |
| Northwestern Mutual Wealth Management Co | $4.7B | $73.0M |
| Raymond James Financial Inc. | $3.5B | $330.0M |
This compares who owns the funds, not what the funds hold. From SEC Form 13F, for managers with $100M+ in US securities.
Who owns them: SPY institutional holders, ITOT institutional holders.
Frequently asked questions
How much do SPY and ITOT overlap?
88.1% by weight, with 504 holdings in common, using holdings for SPY as of June 30, 2026 and ITOT as of June 30, 2026. The largest shared position is NVDA.
Do institutions hold both SPY and ITOT?
1,562 Form 13F filers report positions in both, out of 4,806 that report either one.
How is overlap by weight worked out?
For each holding the two funds share, take the smaller of the two weights, then add those up. Identical portfolios score 100%.