IDEF iShares Defense Industrials and Tech Active ETF
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Over the year to Oct 28, 2026, IDEF lost 5.7%.
Promise check: Not measuredIts theme exposure is measured once ETFIQ defines its theme company by company.
IDEF risk and return scorecard
vs its own holdings
Computed by ETFIQ from Tiingo daily prices and ETFIQ's distribution records; risk-free rate: U.S. Treasury, Daily Treasury Bill Rates, 13-week coupon equivalent Method · Data
Money in and out
Net fund flows · Oct 23, 2026What you earned
What did you actually buy?
Defense · holdings as of Oct 27, 2026More on IDEF
Every number below is on this page. Open what you need.Price, 1 year
$30.51+0.5%1 day, priceClose, Oct 28, 2026
Price only. Total return over the same days, distributions reinvested, was −5.7%. Computed by ETFIQ from Tiingo daily prices.
Source: Tiingo end-of-day prices. Data as of Oct 28, 2026. Updated every trading night. Report a data error
| Window | Total return | S&P 500 (SPY) |
|---|---|---|
| 1M Sep 28 – Oct 28, 2026 | −3.0% | +0.9% |
| 3M Jul 29 – Oct 28, 2026 | −3.0% | +6.1% |
| 6M Apr 29 – Oct 28, 2026 | −5.8% | +9.1% |
| YTD Dec 31, 2025 – Oct 28, 2026 | −0.8% | +14.1% |
| 1Y Oct 28, 2025 – Oct 28, 2026 | −5.7% | +13.6% |
| Since launch May 21, 2025 – Oct 28, 2026 | +22.1% | +34.7% |
| Since launch, annualised May 21, 2025 – Oct 28, 2026 | +14.9% | – |
Total returns, distributions reinvested. Listed May 2025: no 3 years windows.
Source: Tiingo end-of-day prices, with distributions reinvested.
Money in and out
Daily data · as of Oct 23, 2026IDEF: in the year to Oct 23, 2026, net $4.2bn came in; in the month to Oct 23, 2026, $71.4m came in.
Oct 21, 2026 to Oct 23, 2026
Sep 28, 2026 to Oct 23, 2026
Jul 28, 2026 to Oct 23, 2026
Jan 2, 2026 to Oct 23, 2026
Oct 28, 2025 to Oct 23, 2026
SEC filings, then daily counts
IDEF, net flow each trading day over the 63 sessions from Jul 28, 2026 to Oct 23, 2026: money came in on 32 days and went out on 5 days.
Money in on 32 of the 63 trading days, out on 5.
IDEF, net flow each trading day over the 249 sessions from Oct 28, 2025 to Oct 23, 2026: money came in on 116 days and went out on 6 days.
Money in on 116 of the 249 trading days, out on 6.
IDEF, net flow each trading day over the 400 sessions from Mar 24, 2025 to Oct 23, 2026: money came in on 133 days and went out on 6 days, of the 360 days with daily data; the other 40 have none. Before May 20, 2025 ETFIQ has the fund’s monthly data only, from SEC filings: that span is shaded and draws no bars, and its months are in the month by month list.
In on 133 days, out on 6. 40 days missing.
Computed by ETFIQ from iShares’s daily data: each day’s change in shares outstanding times the previous day’s net asset value.
How this is computed
Percentages are of net assets at the start of each window. Numbers are net: money in less money out. Checked against the filing: The month’s daily sum and the filing’s B.6 number agree within rounding or, where the filing’s is larger, within rounding plus the fund’s creation and redemption fees. The full rule is in the fund’s flows file. Every day and month ETFIQ holds for IDEF, back to May 2025, is in its flows file. Flows across every fund · How these flows are computed · Compare IDEF with other funds in the flows tool
Every trading day, last 3 months63 days
Most recent first.
Week by week, last year52 weeks
Net flow into IDEF each week, Oct 28, 2025 to Oct 23, 2026, most recent first, each week named by its last trading day with data. Computed by ETFIQ.
Month by month, money in and money outMay 2025 to Oct 2026
IDEF, money in and money out each month from May 2025 to Sep 2026: two bars a month, money in above the line and money out below. Bars for May 2025 to Jul 2026 are from IDEF’s SEC filings (N-PORT item B.6), and for Aug 2026 to Sep 2026 ETFIQ’s sums of its days. Oct 2026 is still in progress, so it is in the list and not drawn. Of the 18 months listed, money came in on net in 16 and went out in 1.
Bars for May 2025 to Jul 2026 are from IDEF’s SEC filings (N-PORT item B.6), and for Aug 2026 to Sep 2026 ETFIQ’s sums of its days. Of the 18 months listed, money came in on net in 16 and went out in 1.
Most recent first.
How this is computed
N-PORT months: money in is sales plus reinvestments; money out is redemptions. Months summed from daily data: money in adds the days money came in; money out adds the days it went out.
N-PORT months are the filed sales plus reinvestments less redemptions. Later months add up the daily data; the Source column names any missing day.
Source: ETFIQ, from the fund’s daily share counts and net asset values, and its SEC N-PORT filings. Data as of Oct 23, 2026.
IDEF key stats
Trading
as of Oct 28, 2026
IDEF top ten by weight, 37.3% of the fund, of its 155 equity positions, from the holdings published by its issuer for Oct 27, 2026. Source: the issuer’s own daily file.
Source: iShares’s daily holdings file. Data as of Oct 27, 2026. Updated each trading day. Last checked Oct 28, 2026.
About IDEF
How we measure
12 seats on IDEF, as of Oct 28, 2026: 1 Mixed, 6 Challenges, 5 Not enough data.
Questions people ask about IDEF
- How much of IDEF is in S&P 500 companies?
- By its holdings published by its issuer for Oct 27, 2026, 42% of IDEF by weight is stocks the S&P 500 already holds. Its active share against the index is 92%, so that share is the part doing something different.
- What does IDEF hold?
- 155 positions as published by its issuer for Oct 27, 2026, with the top ten at 37% of the fund. The largest are RTX at 7.0%, LOCKHEED MARTIN at 5.3%, GENERAL DYNAMICS CORP at 4.2%.
- Has IDEF beaten the S&P 500?
- Over the year to Oct 28, 2026 IDEF returned −5.7% with distributions reinvested, against +13.6% for the S&P 500, so it finished behind the index by 19.3 points.
- What does IDEF cost?
- The prospectus expense ratio is 0.55% a year. Because 92% of the fund differs from the S&P 500, the fee on that differing part works out at 0.60%.
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ETFIQ, IDEF, thematic ETFs, data as of Oct 28, 2026. https://etfiq.com/funds/idef
ETFIQ. (Oct 28, 2026). IDEF, thematic ETFs. Retrieved from https://etfiq.com/funds/idef
[IDEF, thematic ETFs (ETFIQ, Oct 28, 2026)](https://etfiq.com/funds/idef)
The difference bar for IDEF, redrawn every trading night.
Free to use with attribution for data ETFIQ computes; issuer data stays under its owner's terms. The underlying files are at Open data.
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<figure style="margin:0;max-width:640px">
<a href="https://etfiq.com/funds/idef"><img src="https://etfiq.com/assistant/api/embed/themes/idef.svg" alt="IDEF: 43% of IDEF's weight is in S&P 500 companies and 58% is outside the index. Holdings as of Oct 27, 2026." width="640" style="max-width:100%;height:auto"></a>
<figcaption style="font:13px/1.5 sans-serif">IDEF: 43% of IDEF's weight is in S&P 500 companies and 58% is outside the index. Holdings as of Oct 27, 2026. Data: <a href="https://etfiq.com/funds/idef">ETFIQ</a></figcaption>
</figure>The day's ETF flows, a comparison and one number. Every trading morning. About the Daily
Snapshot, Oct 28, 2026. More on the tabs above.