# IDEF (iShares Defense Industrials Active ETF)

iShares · Thematic ETFs · data as of Sep 11, 2026

IDEF holds 152 stocks, and 64% of its weight is outside the S&P 500.

## Key facts

- IDEF, already in the S&P 500: 36.1%, as of Sep 11, 2026.
- IDEF, active share vs the S&P 500: 95.9%, as of Sep 11, 2026.
- IDEF, top ten holdings: 35.2%, as of Sep 11, 2026.
- IDEF, total return, 1 year: +4.9%, as of Sep 11, 2026.
- IDEF, net assets: $4.3bn (the issuer own daily fund list, as of Sep 11, 2026).

## IDEF over each window to Sep 11, 2026

| Window | Total return | S&P 500 | Gap to S&P 500 | Gap to Nasdaq-100 |
| --- | --- | --- | --- | --- |
| 3 months | −1.9% | +3.3% | −5.2 pts | −1.1 pts |
| 6 months | −8.5% | +16.0% | −24.5 pts | −29.2 pts |
| 1 year | +4.9% | +17.5% | −12.6 pts | −18.1 pts |
| Since launch | +26.5% | +33.0% | −6.4 pts | −13.6 pts |

## Every published field

| Field | Value | Source |
| --- | --- | --- |
| Theme | Defense | ETFIQ, editorial |
| Launched | May 21, 2025 | ETFIQ |
| Already in the S&P 500, by weight | 36.1% | ETFIQ |
| Active share vs the S&P 500 | 95.9% | ETFIQ |
| Already in the Nasdaq-100, by weight | 8.5% | ETFIQ |
| Active share vs the Nasdaq-100 | 96.1% | ETFIQ |
| Top ten holdings weight | 35.2% | ETFIQ |
| Holdings | 152 | ETFIQ |
| Holdings as of | Sep 10, 2026 | the issuer’s daily file |
| Top holdings | RTX 6.7%, PALANTIR TECHNOLOGIES CLASS A 4.7%, LOCKHEED MARTIN CORP 3.6%, BOEING 3.3%, ROLLS-ROYCE HOLDINGS PLC 3.3%, GENERAL DYNAMICS CORP 3.0%, USD CASH 2.7%, AIRBUS GROUP 2.6%, THALES SA 2.6%, NORTHROP GRUMMAN CORP 2.6% | ETFIQ |
| Net assets | $4.3bn | the issuer own daily fund list, as of Sep 11, 2026 |
| Below its all-time high | −13.9% | ETFIQ |
| Closest funds by holdings overlap | WDGF 53%, NATO 44%, PPA 41%, SHLD 39%, MISL 38% | ETFIQ |

## Questions

### How much of IDEF is in S&P 500 companies?

By its holdings published by its issuer for Sep 10, 2026, 36% of IDEF by weight is stocks the S&P 500 already holds. Its active share against the index is 96%, so that share is the part doing something different.

### What does IDEF hold?

152 positions as published by its issuer for Sep 10, 2026, with the top ten at 35% of the fund. The largest are RTX at 6.7%, PALANTIR TECHNOLOGIES CLASS A at 4.7%, LOCKHEED MARTIN CORP at 3.6%.

### Has IDEF beaten the S&P 500?

Over the year to Sep 11, 2026 IDEF returned +4.9% with distributions reinvested, against +17.5% for the S&P 500, so it finished behind the index by 12.6 points.


## Cite this page

ETFIQ, IDEF, data as of Sep 11, 2026. https://etfiq.com/funds/idef
Free to use with attribution; the underlying files are at https://etfiq.com/data/.

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