GRID vs IWO: Holdings Overlap
GRIDFirst Trust NASDAQ Clean Edge Smart Grid Infrastructure Index Fund
First Trust · 120 holdings · $12.2B · as of 2026-03-31
IWOiShares Russell 2000 Growth ETF
iShares · 1101 holdings · $14.8B · as of 2026-03-31
How similar are GRID and IWO?
First Trust NASDAQ Clean Edge Smart Grid Infrastructure Index Fund (GRID, by First Trust) holds 120 positions; iShares Russell 2000 Growth ETF (IWO, by iShares) holds 1101. They have 13 holdings in common, and by portfolio weight the two funds are 0.8% identical. In practical terms the pair is essentially distinct, holding almost none of the same securities.
- Overlap by Weight
- 0.8%Sum of the smaller weight of each shared holding
- Shared Holdings
- 13GRID holds 120 · IWO holds 1101
- Weight in Shared Holdings
- GRID 2%·IWO 3%Share of each fund's weight in stocks both funds own
Based on each fund's latest official holdings. How is this calculated?
What makes each fund different
Only in GRID
107 of 120 positions (98.3% of the fund) are not held by IWO. Showing the top 30 by weight.
Only in IWO
1088 of 1101 positions (96.7% of the fund) are not held by GRID. Showing the top 30 by weight.
Sector Breakdown
| Sector | GRID | IWO |
|---|---|---|
| Industrials | 53.2% | 23.7% |
| Health Care | 0.0% | 23.1% |
| Utilities | 20.3% | 0.5% |
| Information Technology | 10.7% | 19.0% |
| Financials | 0.0% | 8.6% |
| Other Sectors | 4.3% | 20.9% |
| Unclassified | 11.2% | 4.0% |
Share of each fund's portfolio weight by GICS-style sector, compiled from issuer fund data and our own classification of the holdings, not the issuers' published sector charts. “Unclassified” is weight we could not classify (11% of GRID, 4% of IWO).
Performance
| Fund | 1M | YTD | 1Y | 3Y (ann.) | 5Y (ann.) | 10Y (ann.) | Yield |
|---|---|---|---|---|---|---|---|
| GRID | +2.2% | +22.4% | +31.6% | +23.6% | +15.0% | +18.9% | 0.77% |
| IWO | +1.2% | +21.0% | +34.7% | +17.5% | +5.9% | +11.0% | 0.42% |
Total returns including dividends, from adjusted daily closes as of 2026-08-07. 3Y/5Y/10Y are annualized. Yield is trailing-12-month distributions over the last close. Past performance does not predict future results.
Project the growth of $10,000 in GRID vs IWO →
Shared Holdings(13)
The top 10 shared positions account for 97% of the overlap, led by MYRG, ITRI and AMSC.
 MYRGMYR Grp Inc COM | 0.46% | 0.29% | 0.29% |
|---|---|---|---|
 ITRIItron, Inc. COM | 0.39% | 0.13% | 0.13% |
 AMSCAmerican Superconductor Corp. SHS NEW | 0.19% | 0.10% | 0.10% |
| Willdan Group Inc. COM | 0.13% | 0.05% | 0.05% |
 FLNCFluence Energy, Inc., Class A | 0.12% | 0.05% | 0.05% |
 AEISAdvanced Energy Industries, Inc. COM | 0.05% | 0.82% | 0.05% |
 PRIMPrimoris Services Corp. COM | 0.03% | 0.49% | 0.03% |
 ESEESCO Technologies Inc. COM | 0.03% | 0.49% | 0.03% |
 ENSEnerSys COM | 0.03% | 0.02% | 0.02% |
 ACAArcosa Inc COM | 0.02% | 0.10% | 0.02% |
 BDCBelden Inc. COM | 0.01% | 0.30% | 0.01% |
 AZZAZZ Inc COM | 0.01% | 0.25% | 0.01% |
 PLPCPreformed Line Products Co. COM | 0.06% | 0.00% | 0.00% |
Frequently Asked Questions
How much do GRID and IWO overlap?
GRID and IWO overlap by 0.8% of portfolio weight. They share 13 holdings (GRID holds 120 positions and IWO holds 1101), based on each fund's latest SEC-reported holdings.
Is it redundant to own both GRID and IWO?
The two portfolios are 0.8% identical by weight. Owning both is genuine diversification: the funds hold almost none of the same securities.
What are the biggest shared holdings of GRID and IWO?
The largest positions held by both funds are MYRG, ITRI, AMSC, Willdan Group Inc. COM and FLNC. Together the top 10 shared positions account for 97% of the total overlap.
What does GRID own that IWO doesn't?
107 positions (98.3% of GRID) are unique to GRID, led by ETN, JCI and NG-. In the other direction, 1088 positions (96.7% of IWO) are unique to IWO.