Data as of .
IDEF vs WDAF: which is really different?
IDEF and WDAF hold 12% of their weight in the same names, and IDEF returned more over the year.
ETFIQ Off-Index Score: WDAF scores higher
How much of it is not the index it is sold as an alternative to?
A percentile among the 379 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
12% 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 WDAF hold 12% of their money in the same securities at the same weight.
| Holding | IDEF | WDAF |
|---|---|---|
| CODAN | 0.48% | 1.59% |
| ELECTRO OPTIC SYSTEMS HOLDINGS | 0.32% | 1.44% |
| DRONESHIELD | 0.21% | 1.51% |
| Only in IDEF | Only in WDAF |
|---|---|
| RTX 6.55% | HINDUSTAN AERONAUTICS LTD 8.01% |
| PALANTIR TECHNOLOGIES CLASS A 5.02% | BHARAT ELECTRONICS LTD 7.82% |
| BLK CSH FND TREASURY SL AGENCY 3.77% | KOREA AEROSPACE INDUSTRIES LTD 7.70% |
| LOCKHEED MARTIN CORP 3.62% | HANWHA AEROSPACE CO LTD 7.32% |
| ROLLS-ROYCE HOLDINGS PLC 3.29% | LIG DEFENSE & AEROSPACE CO LTD 7.01% |
| BOEING 3.19% | HYUNDAI ROTEM COMPANY 6.84% |
| GENERAL DYNAMICS CORP 2.94% | IHI CORP 4.58% |
| NORTHROP GRUMMAN CORP 2.58% | KAWASAKI HEAVY INDUSTRIES LTD 4.22% |
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 18, 2026.
Performance, window by window
| Window | Total return | vs the S&P 500 | vs the Nasdaq-100 | |||
|---|---|---|---|---|---|---|
| IDEF | WDAF | IDEF | WDAF | IDEF | WDAF | |
| 3 months | −1.6% | −8.2% | −3.9 pts | −10.5 pts | +0.9 pts | −5.8 pts |
| 6 months | −5.7% | −4.9% | −23.8 pts | −22.9 pts | −30.0 pts | −29.1 pts |
| 1 year | +4.4% | −1.4% | −12.2 pts | −17.9 pts | −17.4 pts | −23.1 pts |
| Since launch | +27.2% | −0.1% | −5.6 pts | −17.5 pts | −14.2 pts | −23.7 pts |
| IDEF iShares Defense Industrials Active ETF Holds 155 stocks in defense, 36% of its weight in S&P 500 companies | WDAF WisdomTree Asia Defense Fund Holds 61 stocks in defense, 0% of its weight in S&P 500 companies | |
|---|---|---|
| Issuer | iShares | WisdomTree |
| Theme | Defense | Defense |
| In the S&P 500 | 36.2% | 0.0% |
| Active share vs the S&P 500 | 95.9% | 100.0% |
| In the Nasdaq-100 | 9.2% | 0.0% |
| Holdings | 155 | 61 |
| Top ten, share of the fund | 35.8% | 61.6% |
| Expense ratio | not published | 0.45% |
| Fee for the differing part | not published | 0.45% |
| Total return, 1 year | +4.4% | −1.4% |
| vs the S&P 500 | −12.2 pts | −17.9 pts |
| vs the Nasdaq-100 | −17.4 pts | −23.1 pts |
| Below its high | −13.4% | −18.8% |
| Net assets | $4.3bn | $12m |
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 36% of the fund across 155 positions, as published by its issuer for Sep 18, 2026. Over the year to Sep 18, 2026 the fund returned +4.4% with distributions reinvested against +16.6% for the S&P 500, so a holder was behind by 12.2 pts. It sits 13.4% below its all-time high of Mar 2, 2026.
WDAF in plain words
By weight, 0% of WDAF'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 62% of the fund across 61 positions, as filed for Jun 30, 2026. Over the year to Sep 18, 2026 the fund returned −1.4% with distributions reinvested against +16.6% for the S&P 500, so a holder was behind by 17.9 pts. It sits 18.8% below its all-time high of May 5, 2026.
Questions people ask
- Do IDEF and WDAF hold the same stocks?
- By their latest filings, 12% 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 WDAF?
- IDEF has 36% of its weight in S&P 500 names and WDAF has 0%, so WDAF 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 WDAF, data as of Sep 18, 2026. https://etfiq.com/compare/themes/idef-vs-wdaf Free to use with attribution; the underlying files are at Open data.