Data as of Oct 28, 2026.
GRID vs IDEF: Holdings Overlap & Returns
Over the year to Oct 28, 2026, GRID returned +7.9% to IDEF's −5.7%; 0% of their weight is in the same names.
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Net assets: $11.4bn on Oct 27, 2026 for First Trust NASDAQ Clean Edge Smart Grid Infrastructure Index Fund, and $3.7bn on Oct 28, 2026 for iShares Defense Industrials and Tech Active ETF.
41% of GRID's weight is in S&P 500 companies and 59% is outside the index. Holdings as of Oct 27, 2026.
43% of IDEF's weight is in S&P 500 companies and 58% is outside the index. Holdings as of Oct 27, 2026.
Pair scorecard
IDEF costs 0.01 points a year less; their one-year returns differ by 13.6 points; GRID is 3.1 times larger.
Points (pts) are percentage points.
| Measure | GRID | IDEF |
|---|---|---|
| Return | ||
| Total return, 1 year | +7.9% | −5.7% |
| Drawdown | ||
| Below its all-time high | 14.7%, high on May 11, 2026 | 17.0%, high on Mar 2, 2026 |
| Against its benchmark | ||
| What it tracks | Electrification and the grid | Defense |
| Its benchmark, total return, 1 year | +13.3% | |
| Against its benchmark, 1 year | behind by 5.4 pts | |
| Cost and size | ||
| Expense ratio | 0.56% | 0.55% |
| Net assets, as of Oct 27, 2026 | $11.4bn | $3.7bn |
| Holdings | ||
| Holdings in common | 0% | |
Holdings in common uses holdings dated Oct 27, 2026. Method
Risk and return
May 30, 2025 to Oct 23, 2026 · 73 weekly returnsGRID returned more: +27.3% to +14.9%. GRID swung less: 18.2% to 22.4%. GRID and IDEF fell about the same at their worst: −17.0% and −17.1%.
Full scorecard
9 measures, with how each is measured Open ↓
| Measure | GRID | IDEF | Edge | How it is measured |
|---|---|---|---|---|
| Return | ||||
| Total return | +27.3% | +14.9% | GRID | Price change plus distributions, reinvested. |
| Annualized | +18.7% | +10.4% | GRID | Total return as a yearly rate. |
| Price return | +25.2% | +14.5% | GRID | Price change alone, distributions left out. |
| Risk | ||||
| Volatility | 18.2% | 22.4% | GRID | Spread of weekly returns, annualized. Lower is steadier. |
| Downside deviation | 12.4% | 14.7% | GRID | Like volatility, counting only weeks below the Treasury bill rate. |
| Max drawdown | −17.0% | −17.1% | Tie | Deepest fall from a high to the low after it. |
| Risk-adjusted | ||||
| Sharpe | 0.82 | 0.38 | GRID | Return above Treasury bills per unit of volatility. |
| Sortino | 1.20 | 0.58 | GRID | Return above Treasury bills per unit of downside deviation. |
| Calmar | 1.10 | 0.61 | GRID | Annualized return divided by the max drawdown. |
Computed by ETFIQ from Tiingo daily prices and ETFIQ's distribution records, 73 weekly returns. Cash rate: the 13-week Treasury bill.
What they share
By the books each fund has filed, GRID and IDEF hold 0% of their money in the same securities at the same weight. Holdings dated Oct 27, 2026.
half
0% in common
Only in one fund ↓
Window by window
| Total return | vs its benchmark | |||
|---|---|---|---|---|
| Window | GRID | IDEF | GRID | IDEF |
| 3 months | +1.3% | −3.0% | −4.2 pts vs IWV | not measured |
| 6 months | −7.5% | −5.8% | −16.3 pts vs IWV | not measured |
| 1 year | +7.9% | −5.7% | −5.4 pts vs IWV | not measured |
| 3 years | +104.9% | – | +12.1 pts vs IWV | – |
| Since launchNot the same days: GRID Nov 2009 · IDEF May 2025 | +576.0% | +22.1% | not measured | not measured |
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Side by side
As of Oct 28, 2026. Source: ETFIQ.
0% of the two portfolios are the same securities at the same weight.
GRID and IDEF are built for the same job. How do they differ in cost, holdings and results?
- Theme. GRID covers Electrification and the grid and IDEF covers Defense.
- Concentration. The top ten holdings are 57.0% of GRID and 37.3% of IDEF, a gap of 19.7 points.
- What each follows. GRID follows Electrification and the grid and IDEF follows Defense.
Data as of Oct 28, 2026.
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Over the year to Oct 28, 2026 the fund returned +7.9% with distributions reinvested against +13.3% for its benchmark, the Russell 3000 Index, so a holder was behind by 5.4 pts.
By weight, 41% of GRID's portfolio is stocks that are also in the S&P 500; its active share against the S&P 500 is 92%. The top ten holdings are 57% of the fund across 122 positions, as published by its issuer for Oct 27, 2026. It sits 14.7% below its all-time high of May 11, 2026.
IDEF
By weight, 42% of IDEF's portfolio is stocks that are also in the S&P 500; its active share against the S&P 500 is 92%. The top ten holdings are 37% of the fund across 155 positions, as published by its issuer for Oct 27, 2026. Over the year to Oct 28, 2026 the fund returned −5.7% with distributions reinvested. It sits 17.0% below its all-time high of Mar 2, 2026.
Questions people ask
- Do GRID and IDEF hold the same stocks?
- By their latest filings, 0% of their books are the same securities at the same weight. Overlap is the sum of the smaller weight of every security they share.
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How this is computed
Overlap adds up the smaller of the two weights for each security both funds hold.
Every number is an ETFIQ calculation with distributions reinvested.
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ETFIQ, GRID against IDEF, data as of Oct 28, 2026. https://etfiq.com/compare/themes/grid-vs-idef
ETFIQ. (Oct 28, 2026). GRID against IDEF. Retrieved from https://etfiq.com/compare/themes/grid-vs-idef
[GRID against IDEF (ETFIQ, Oct 28, 2026)](https://etfiq.com/compare/themes/grid-vs-idef)
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