Fund · iShares U.S. Telecommunications ETF · measured from SEC filings
IYZ holdings
IYZ reports 25 holdings and behaves like 10.9 equally weighted ones, computed from its SEC Form N-PORT filing for 2026-06-30. The fact sheet publishes the first number; this page computes the second, and traces it across 28 quarters of filings.
Measured concentration
as of 2026-06-30Read this figure with the following in mind
8.7% of net assets is securities-lending cash collateral, excluded from the figure; counted as filed the fund would read 10.1
The figure below is what the filing says, published unchanged. What it may not do is sit beside a plain long-only fund and be read as the same quantity. How comparability is decided.
Computed by this site from the fund's SEC Form N-PORT filing; what the measure does not tell you · every fund in one table · hold it with other funds? X-ray the mix. Pricing: 100% at a quoted market price (level 1), 3 issuer countries.
What stands out
as of 2026-06-30IYZ's largest investment is Cisco Systems Inc at 22.59% of net assets. Arista Networks Inc and Verizon Communications Inc follow; the three together are 44.57%. Ten companies are 69.49% of the fund; the other 15 share the rest. Among the 721 equity funds measured here, IYZ behaves like 10.9 holdings against a median of 42.4 — 3.8 times more concentrated than the median. Across 28 quarterly filings IYZ has become less concentrated: it behaved like 8.2 at 2019-09-30 and 10.9 at 2026-06-30. Between the 2026-03-31 and 2026-06-30 filings 5 positions were added and 3 dropped; 23.4% of the weight moved.
Each sentence is read from the fund's own SEC filing; the class median is computed across the comparable equity funds on this site. Nothing here is a view on the fund.
Every filing since 2019
28Between 2019-09-30 and 2026-06-30, IYZ went from behaving like 8.2 equally weighted positions to 10.9 — 33% more, while its top ten went from 78.64% to 69.49% of net assets. Read across the funds on the concentration-over-time table.
| Period | Holdings | Effective | Top 10 | Largest |
|---|---|---|---|---|
| 2026-06-30 | 25 | 10.9 | 69.49% | 22.59% |
| 2026-03-31 | 23 | 11.1 | 73.02% | 19.12% |
| 2025-12-31 | 23 | 11.3 | 71.52% | 20.36% |
| 2025-09-30 | 24 | 11.7 | 71.03% | 18.08% |
| 2025-06-30 | 23 | 11.6 | 71.43% | 18.23% |
| 2025-03-31 | 21 | 11 | 74.61% | 17.51% |
| 2024-12-31 | 21 | 11.1 | 74.46% | 18.61% |
| 2024-09-30 | 21 | 11.5 | 73.14% | 16.76% |
Earlier filings (20 more, back to 2019-09-30)
| Period | Holdings | Effective | Top 10 | Largest |
|---|---|---|---|---|
| 2024-06-30 | 21 | 11.6 | 75% | 16.14% |
| 2024-03-31 | 21 | 11.1 | 73.67% | 16.78% |
| 2023-12-31 | 22 | 11.9 | 70.98% | 16.45% |
| 2023-09-30 | 21 | 11.3 | 72.43% | 18.11% |
| 2023-06-30 | 22 | 11.4 | 71.73% | 17.51% |
| 2023-03-31 | 24 | 11.1 | 72.12% | 18.36% |
| 2022-12-31 | 22 | 11.4 | 70.65% | 17.33% |
| 2022-09-30 | 22 | 11.3 | 71.8% | 16.69% |
| 2022-06-30 | 22 | 11.8 | 69.89% | 16.65% |
| 2022-03-31 | 23 | 12.2 | 69.17% | 15.49% |
| 2021-12-31 | 24 | 11.6 | 70.62% | 16.92% |
| 2021-09-30 | 22 | 11.7 | 70.27% | 16.09% |
| 2021-06-30 | 47 | 8.5 | 77.98% | 22.4% |
| 2021-03-31 | 46 | 8.5 | 78.46% | 22.46% |
| 2020-12-31 | 48 | 8.7 | 77.56% | 22.52% |
| 2020-09-30 | 45 | 8.4 | 77.33% | 22.89% |
| 2020-06-30 | 45 | 8.8 | 77.32% | 21.91% |
| 2020-03-31 | 42 | 9.7 | 74.49% | 21.56% |
| 2019-12-31 | 43 | 8.7 | 76.51% | 22.44% |
| 2019-09-30 | 42 | 8.2 | 78.64% | 23.27% |
One row per filed reporting period, newest first, read from EDGAR. Quarterly because that is the public filing cadence. Rows marked * are published but held out of the comparison above; the methodology page says when and why.
As filed, collateral included
8.67% collateralIYZ's filing lists 26 positions including 8.67% of net assets in securities-lending cash collateral. Counted as filed the fund reads 10.1 effective holdings with a top ten of 74.97%; on its own investments — the figure above — it reads 10.9 with a top ten of 69.49%. The collateral is matched by a liability and is not a holding the fund chose; since 2026-09-18 every figure on this site sets it aside (methodology). Both numbers are in the data.
Largest positions, as filed
as of 2026-06-30The 15 largest of 25 positions in IYZ's Form N-PORT, weight as a share of net assets, securities-lending collateral excluded. Every position, every quarter: IYZ.csv.gz.
| # | Position | Weight | Cumulative |
|---|---|---|---|
| 1 | CISCO SYSTEMS, INC. | 22.59% | 22.6% |
| 2 | ARISTA NETWORKS, INC. | 11.01% | 33.6% |
| 3 | VERIZON COMMUNICATIONS INC. | 10.97% | 44.6% |
| 4 | AT&T INC. | 4.16% | 48.7% |
| 5 | COMCAST CORPORATION | 3.79% | 52.5% |
| 6 | CIENA CORPORATION | 3.63% | 56.1% |
| 7 | MOTOROLA SOLUTIONS, INC. | 3.42% | 59.6% |
| 8 | SPACE EXPLORATION TECHNOLOGIES CORP. | 3.38% | 63.0% |
| 9 | T-MOBILE US, INC. | 3.34% | 66.3% |
| 10 | LUMENTUM HOLDINGS INC. | 3.19% | 69.5% |
| 11 | IRIDIUM COMMUNICATIONS INC. | 2.95% | 72.4% |
| 12 | AST SPACEMOBILE, INC. | 2.78% | 75.2% |
| 13 | CHARTER COMMUNICATIONS, INC. | 2.70% | 77.9% |
| 14 | ROKU, INC. | 2.63% | 80.5% |
| 15 | MILLICOM INTERNATIONAL CELLULAR S.A. | 2.53% | 83.1% |
By country of issuer
as of 2026-06-30Share of IYZ's own investments by the issuer country the filer reported (incorporation, not revenue). Each country links to every fund that holds it.
| Country | Share |
|---|---|
| United States | 95.06% |
| Luxembourg° | 2.53% |
| Bermuda° | 2.41% |
Returns the fund reported
2019-07 – 2026-06Monthly total returns from Item B.5 of IYZ's own filings, 84 months on record. Not computed here and not from a price feed.
Cross-checked against a series computed separately from prices: median difference 0.05 percentage points over 84 months, which is roughly the distributions. Every month with the filing it came from: IYZ.json · all funds.
Who borrows IYZ's shares
2026-06-30The fund lends its holdings, and Item B.4.a of the filing names every firm holding them. At 2026-06-30, $119m was out to 8 borrowers, 9.53% of net assets. The largest, BofA Securities, Inc., held 34.1% of it.
| Borrower | On loan | Share of the loan |
|---|---|---|
| BofA Securities, Inc. | $40m | 34.1% |
| JP MORGAN SECURITIES LLC | $33m | 27.7% |
| GOLDMAN SACHS & CO. | $21m | 18.0% |
| MORGAN STANLEY & CO LLC | $16m | 13.7% |
| BNP PARIBAS PRIME BROKERAGE INTERNATIONAL LIMITED | $6m | 4.7% |
Cash collateral reported against the loan: 8.67% of net assets, 91% of the amount lent. That is a floor on the collateral, not the whole of it — collateral the fund does not hold as a position is not in this filing, so a figure under 100% is not evidence of under-collateralisation. How that figure behaves across all funds. Every quarter IYZ has filed, with each borrower: IYZ.json · all funds.
Since the previous filing
2026-03-31 → 2026-06-3023 positions became 25: 5 added (12.9% of the fund at the later date), 3 dropped (3.3% at the earlier date). Half the sum of all weight changes, a turnover proxy: 23.4%. Positions are matched on identifiers, so a security whose identifier changed shows as one drop and one add. Every filing of IYZ compared this way, as a feed: changes.xml · all funds: filings received.
| Largest increases | 2026-03-31 | 2026-06-30 | Largest decreases | 2026-03-31 | 2026-06-30 |
|---|---|---|---|---|---|
| ARISTA NETWORKS, INC. | 3.98% | 11.01% | AT&T INC. | 12.83% | 4.16% |
| CISCO SYSTEMS, INC. | 19.12% | 22.59% | VERIZON COMMUNICATIONS INC. | 13.44% | 10.97% |
| UBIQUITI INC. | 3.46% | 2.27% | |||
| MILLICOM INTERNATIONAL CELLULAR S.A. | 3.57% | 2.53% | |||
| IRIDIUM COMMUNICATIONS INC. | 3.74% | 2.95% | |||
| T-MOBILE US, INC. | 4.10% | 3.34% |
New: SPACE EXPLORATION TECHNOLOGIES CORP. (3.38%), VIAVI SOLUTIONS INC. (2.47%), GLOBALSTAR, INC. (2.46%), ECHOSTAR CORPORATION (2.34%), APPLIED OPTOELECTRONICS, INC. (2.25%). Gone: GCI LIBERTY, INC. (3.03%), GCI LIBERTY, INC. (0.31%), E MINI RUSS 1000 VJUN26 (0.00%).
Asset categories and pricing
as of 2026-06-3091.92% equity, 8.08% short-term investment as filed; 100.0% carried at a quoted market price (fair-value level 1). Categories and levels are the filer's; what a low level-1 share does and does not mean is in the measure's page.
Derivative exposure and counterparties
as of 2026-06-30A position count cannot describe a fund that uses derivatives, because a swap is filed at its unrealised gain, not its exposure. These are the notionals the fund itself reported, against net assets of $1.24B. Notional of an interest-rate or currency swap is not equity exposure.
Full detail for every fund that files derivatives: leverage.json (CC BY 4.0).
Neighbours by effective holdings, equity funds
10Every measured equity fund lined up by how many holdings it behaves like; these sit either side of IYZ (10.9). Same filings, same arithmetic. Position in this list says nothing about which fund is better.
| Fund | Reports | Behaves like | Top ten | As of |
|---|---|---|---|---|
| BIZD VanEck BDC Income ETF | 34 | 10.4 | 77.58% | 2026-06-30 |
| IYE iShares U.S. Energy ETF | 42 | 10.5 | 70.37% | 2026-07-31 |
| SLVR Sprott Silver Miners & Physical Silver ETF | 78 | 10.5 | 74% | 2026-06-30 |
| VOX Vanguard Communication Services Index Fund | 116 | 10.8 | 71.85% | 2026-05-31 |
| EWO iShares MSCI Austria ETF | 23 | 10.9 | 77.52% | 2026-05-31 |
| IHF iShares U.S. Healthcare Providers ETF | 63 | 11.1 | 72.12% | 2026-06-30 |
| XLC State Street(R) Communication Services Select Sector SPDR(R) ETF | 26 | 11.2 | 76.18% | 2026-06-30 |
| AMZA InfraCap MLP ETF | 30 | 11.3 | 83.27% | 2026-07-31 |
| EWK iShares MSCI Belgium ETF | 43 | 11.3 | 67.66% | 2026-05-31 |
| ARGT Global X MSCI Argentina ETF | 26 | 11.4 | 68.26% | 2026-07-31 |
Essays that examine IYZ
0Mentions are detected across the full text of every article, so an appearance may be a passing comparison rather than the subject. Nothing here is a recommendation to buy or sell — see the disclaimer.