IWB vs SPYM: holdings overlap, shared companies and scores
As of October 9, 2026, IWB and SPYM overlap 92.4% by weight. iShares Russell 1000 ETF (IWB): Russell 1000 index. State Street SPDR Portfolio S&P 500 ETF (SPYM): S&P 500 index.
Updated October 9, 2026
Where IWB and SPYM trade against their own history
IWB trades at 24.4 times earnings, against its own median of 22.4, and is more expensive than 63% of its own 115 monthly readings since 2017.
SPYM trades at 24.7 times earnings, against its own median of 23.4, and is more expensive than 60% of its own 109 monthly readings since 2017.
What moved IWB and SPYM this week
IWB rose 1.2% in the week to October 9, 2026. The holdings that moved it most were Microsoft (+3.4%), Amazon.com (+4.3%) and Alphabet (+2.4%); Nvidia (−2.0%) pushed the other way.
SPYM rose 1.1% in the week to October 9, 2026. The holdings that moved it most were Microsoft (+3.4%), Amazon.com (+4.3%) and Palantir Technologies (+10.8%); Nvidia (−2.0%) pushed the other way.
What do IWB and SPYM each hold?
What's inside IWB: Tech 44%, Magnificent 7 32%.
37% of IWB is its ten largest holdings.
What's inside SPYM: Tech 45%, Magnificent 7 35%.
39% of SPYM is its ten largest holdings.
How much do IWB and SPYM overlap? 92.4% by weight
As of October 9, 2026, IWB and SPYM overlap 92.4% by weight.
92% of IWB is already inside SPYM.
99% of SPYM is already inside IWB.
IWB holds 1,023 companies and SPYM holds 506; 498 are in both.
Computed by ETF Copilot from both funds' holdings rather than quoted from a data provider, and rebuilt nightly.
How does ETF Copilot score IWB and SPYM? 6.7 and 7.1 out of 10
As of October 9, 2026, ETF Copilot scores IWB 6.7 out of 10 and SPYM 7.1 out of 10.
They differ most on Quality: IWB 8.1 and SPYM 8.7.
The five factor scores behind them are set out below, 0–10 and higher is better, ranked against every US equity ETF we track.
| Factor | IWB | SPYM |
|---|---|---|
| Growth | 7.3 | 7.6 |
| Value | 3.1 | 3.5 |
| Risk | 6.6 | 6.8 |
| Quality | 8.1 | 8.7 |
| Return | 7.8 | 8.2 |
SPYM is the cheaper of the two at 0.02% a year
As of October 9, 2026, IWB charges 0.15% a year, yields 0.90% and holds $49.6B in assets across 1023 positions.
As of October 9, 2026, SPYM charges 0.02% a year, yields 1.00% and holds $178.5B in assets across 506 positions.
| Measure | IWB | SPYM |
|---|---|---|
| Expense ratio | 0.15% | 0.02% |
| Dividend yield | 0.90% | 1.00% |
| Assets under management | $49.6B | $178.5B |
| Holdings | 1023 | 506 |
Expense ratio, dividend yield and assets under management are reported by the fund and refreshed daily. Every other figure on this page is computed by ETF Copilot.
Compare with similar funds
Cite this
ETF Copilot, “IWB vs SPYM holdings overlap and scores”, as of October 9, 2026.
https://etf-copilot.com/compare/iwb-vs-spym
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