CIBR vs IYZ overlap - what they share and where they differ
CIBR and IYZ share 9.9% of their weight across 2 common positions, read from what each fund reported to the SEC.
Each week Ploutos reads the reported positions of the largest US equity ETFs and measures, pair by pair, the weight they share: for every stock both funds hold, the smaller of the two weights counts. Two funds tracking the same index land near 100%. A sector fund inside a broad index fund lands at roughly that sector's weight.
CIBR and IYZ
9.9%
2 shared positions
CIBR
First Trust Nasdaq Cybersecurity ETF
Reported positions cover 100% of the fund, 42 positions · Jun 30, 2026
Top 10: 58.1%·Holdings of CIBR
IYZ
iShares U.S. Telecommunications ETF
Reported positions cover 100% of the fund, 22 positions · Jun 30, 2026
Top 10: 69.5%·Holdings of IYZ
Reported positions cover CIBR 100%, IYZ 100% of each fund. An overlap cannot exceed the smaller coverage, so a low figure can mean little overlap or thin reporting.
IYZ vs CIBR side by side
CIBRFirst Trust Nasdaq Cybersecurity ETF
42
stock positions reported to the SEC
89.8% of its weight is in 40 names IYZ does not hold
IYZiShares U.S. Telecommunications ETF
22
stock positions reported to the SEC
66.3% of its weight is in 20 names CIBR does not hold
Where each fund's weight sits
Largest sectors for both funds
The widest gap is Communication Services: IYZ has 42.8 points more of it.
The figures side by side
| CIBR | IYZ | |
|---|---|---|
| Filing date | Jun 30, 2026 | Jun 30, 2026 |
| Stock positions reported | 42 | 22 |
| Weight of the ten largest | 58.1% | 69.5% |
| Largest position | PANW 9.6% | CSCO 22.6% |
| Held alone | 40 positions, 89.8% | 20 positions, 66.3% |
| Covered by stock positions | 100% | 100% |
Holdings they share
| Stock | In CIBR | In IYZ | Counted |
|---|---|---|---|
| CSCOCISCO SYSTEMS INC | 7.75% | 22.59% | 7.75% |
| ANETARISTA NETWORKS INC | 2.12% | 11.01% | 2.12% |
What each holds alone
The heaviest positions one fund reports and the other does not.
Only in CIBR
Only in IYZ
Questions people ask
Is CIBR the same as IYZ?
9.9% of their weight sits in the same 2 holdings. CIBR also reports PANW, FTNT, CRWD, which the other does not. IYZ also reports VZ, T, CMCSA, which the other does not.
How is the overlap between CIBR and IYZ measured?
For every stock both funds report, the smaller of the two weights counts, and the sum is the overlap. The reported positions cover 100% of CIBR and 100% of IYZ, so the number cannot exceed the smaller coverage.
Which holds more, IYZ or CIBR?
CIBR reports 42 stock positions and IYZ reports 22. 89.8% of CIBR's weight sits in names IYZ does not hold, and 66.3% of IYZ's weight in names CIBR does not hold. The ten largest positions are 58.1% of CIBR and 69.5% of IYZ.
How do CIBR and IYZ differ by sector?
The widest gap is Communication Services: IYZ has 42.8 points more of it. Sectors come from each holding's SIC code in its SEC record, summed by the weight the fund reports.
Where do the numbers come from?
From each fund's own N-PORT filing to the SEC, which lists every position and its weight. The comparison uses every equity position the fund reports; cash, futures and bonds are not counted, which is why a coverage figure sits next to every result. Holdings change between filings.
Add a third fund in the tool·All fund pairs
Descriptive data from public SEC filings. Nothing on this page is a recommendation to buy, sell or hold any fund or stock, and holdings change between filings.