Data as of .
IDEF vs XME: which is really different?
IDEF and XME hold 1% of their weight in the same names, and XME returned more over the year.
ETFIQ Off-Index Score: XME scores higher
How much of it is not the index it is sold as an alternative to?
A percentile among the 349 thematic ETFs with a holdings filing. It is a position in a set, not a rating, and neither end of it is a recommendation. All thematic ETFs ranked by it · How it is computed
1% of the two portfolios are the same securities at the same weight.
What they hold in common
By the books each fund has filed, IDEF and XME hold 1% of their money in the same securities at the same weight.
| Only in IDEF | Only in XME |
|---|---|
| RTX 6.72% | Uranium Energy Corp 4.76% |
| PALANTIR TECHNOLOGIES CLASS A 4.71% | Hecla Mining Co 4.62% |
| LOCKHEED MARTIN CORP 3.62% | Centrus Energy Corp 4.60% |
| BOEING 3.32% | USA Rare Earth Inc 4.47% |
| ROLLS-ROYCE HOLDINGS PLC 3.30% | Coeur Mining Inc 4.46% |
| GENERAL DYNAMICS CORP 2.97% | MP Materials Corp 4.41% |
| USD CASH 2.72% | Freeport-McMoRan Inc 4.26% |
| THALES SA 2.61% | Royal Gold Inc 4.26% |
Weight overlap is an ETFIQ calculation: for every security both funds hold, the smaller of the two weights, summed. Above 50%, holding both is close to holding one of them twice. Holdings dated Jun 30, 2026 and Sep 10, 2026.
Performance, window by window
| Window | Total return | vs the S&P 500 | vs the Nasdaq-100 | |||
|---|---|---|---|---|---|---|
| IDEF | XME | IDEF | XME | IDEF | XME | |
| 3 months | −1.9% | −5.6% | −5.2 pts | −8.9 pts | −1.1 pts | −4.8 pts |
| 6 months | −8.5% | +4.3% | −24.5 pts | −11.7 pts | −29.2 pts | −16.3 pts |
| 1 year | +4.9% | +32.5% | −12.6 pts | +15.0 pts | −18.1 pts | +9.6 pts |
| 3 years | not published | +123.5% | not published | +45.6 pts | not published | +28.4 pts |
| Since launch | +26.5% | +160.8% | −6.4 pts | −643.6 pts | −13.6 pts | −1513.1 pts |
| IDEF iShares Defense Industrials Active ETF Holds 152 stocks in defense, 36% of its weight in S&P 500 companies | XME State Street(R) SPDR(R) S&P(R) Metals & Mining ETF Holds 41 stocks in miners and metals, 17% of its weight in S&P 500 companies | |
|---|---|---|
| Issuer | iShares | State Street |
| Theme | Defense | Miners and metals |
| In the S&P 500 | 36.1% | 17.3% |
| Active share vs the S&P 500 | 95.9% | 99.6% |
| In the Nasdaq-100 | 8.5% | 0.0% |
| Holdings | 152 | 41 |
| Top ten, share of the fund | 35.2% | 46.8% |
| Expense ratio | not published | 0.35% |
| Fee for the differing part | not published | 0.35% |
| Total return, 1 year | +4.9% | +32.5% |
| vs the S&P 500 | −12.6 pts | +15.0 pts |
| vs the Nasdaq-100 | −18.1 pts | +9.6 pts |
| Below its high | −13.9% | −14.4% |
IDEF in plain words
By weight, 36% of IDEF's portfolio is stocks that are also in the S&P 500; its active share against the S&P 500 is 96%. The top ten holdings are 35% of the fund across 152 positions, as published by its issuer for Sep 10, 2026. Over the year to Sep 11, 2026 the fund returned +4.9% with distributions reinvested against +17.5% for the S&P 500, so a holder was behind by 12.6 pts. It sits 13.9% below its all-time high of Mar 2, 2026.
XME in plain words
By weight, 17% of XME's portfolio is stocks that are also in the S&P 500; its active share against the S&P 500 is 100%. The top ten holdings are 47% of the fund across 41 positions, as published by its issuer for Sep 10, 2026. Over the year to Sep 11, 2026 the fund returned +32.5% with distributions reinvested against +17.5% for the S&P 500, so a holder was ahead by 15.0 pts. It sits 14.4% below its all-time high of Jun 2, 2026.
Questions people ask
- Do IDEF and XME hold the same stocks?
- By their latest filings, 1% of their books are the same securities at the same weight, which is mostly different names. Overlap is the sum of the smaller weight of every security they share.
- Which is more different from the S&P 500, IDEF or XME?
- IDEF has 36% of its weight in S&P 500 names and XME has 17%, so XME differs more from the index.
Other comparisons
Where these figures came from
ETFIQ links to the documents behind every figure. It is not affiliated with any issuer, and a link is not an endorsement.
Cite this page. ETFIQ, IDEF against XME, data as of Sep 11, 2026. https://etfiq.com/compare/themes/IDEF-XME Free to use with attribution; the underlying files are at Open data.