Fund · iShares Core S&P Total U.S. Stock Market ETF · measured from SEC filings
ITOT holdings
ITOT reports 2,501 holdings and behaves like 66 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
1.5% of net assets is securities-lending cash collateral, excluded from the figure; counted as filed the fund would read 65.0
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: 99.99% at a quoted market price (level 1), 13 issuer countries.
What stands out
as of 2026-06-30ITOT's largest investment is Nvidia Corp at 6.63% of net assets. Apple Inc and Microsoft Corp follow; the three together are 16.22%. Ten companies are 32.12% of the fund; the other 2,491 share the rest. Among the 721 equity funds measured here, ITOT behaves like 66 holdings against a median of 42.4 — 1.6 times the median. Across 28 quarterly filings ITOT has become more concentrated: it behaved like 159.9 at 2019-09-30 and 66 at 2026-06-30. Between the 2026-03-31 and 2026-06-30 filings 64 positions were added and 55 dropped; 9.0% 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, ITOT went from behaving like 159.9 equally weighted positions to 66 — 59% fewer, while its top ten went from 17.96% to 32.12% of net assets. Read across the funds on the concentration-over-time table.
| Period | Holdings | Effective | Top 10 | Largest |
|---|---|---|---|---|
| 2026-06-30 | 2,501 | 66 | 32.12% | 6.63% |
| 2026-03-31 | 2,491 | 65.5 | 32.23% | 6.69% |
| 2025-12-31 | 2,496 | 58.5 | 34.66% | 6.85% |
| 2025-09-30 | 2,488 | 58.5 | 34.14% | 7.01% |
| 2025-06-30 | 2,460 | 63.8 | 32.09% | 6.43% |
| 2025-03-31 | 2,452 | 73.4 | 29.44% | 6.15% |
| 2024-12-31 | 2,513 | 63.5 | 32.49% | 6.61% |
| 2024-09-30 | 2,548 | 68.8 | 30.15% | 6.33% |
Earlier filings (20 more, back to 2019-09-30)
| Period | Holdings | Effective | Top 10 | Largest |
|---|---|---|---|---|
| 2024-06-30 | 2,521 | 65.4 | 31.22% | 6.32% |
| 2024-03-31 | 2,512 | 80.5 | 27.77% | 6.13% |
| 2023-12-31 | 2,639 | 83.1 | 26.48% | 6.03% |
| 2023-09-30 | 2,803 | 87.3 | 26.05% | 5.96% |
| 2023-06-30 | 3,294 | 82.3 | 26.04% | 6.58% |
| 2023-03-31 | 3,330 | 96.5 | 23.23% | 6.06% |
| 2022-12-31 | 3,384 | 118.3 | 20.61% | 5.11% |
| 2022-09-30 | 3,370 | 101.5 | 23.34% | 5.83% |
| 2022-06-30 | 3,654 | 103.3 | 22.78% | 5.57% |
| 2022-03-31 | 3,659 | 95.4 | 24.64% | 5.91% |
| 2021-12-31 | 3,678 | 97.7 | 24.33% | 5.69% |
| 2021-09-30 | 3,705 | 110.8 | 22.94% | 4.96% |
| 2021-06-30 | 3,643 | 113.7 | 22.43% | 4.83% |
| 2021-03-31 | 3,621 | 121.3 | 21.52% | 4.68% |
| 2020-12-31 | 3,600 | 107 | 22.47% | 5.5% |
| 2020-09-30 | 3,586 | 98.5 | 23.16% | 5.53% |
| 2020-06-30 | 3,588 | 103.6 | 22.66% | 5.06% |
| 2020-03-31 | 3,640 | 115.5 | 21.6% | 4.78% |
| 2019-12-31 | 3,689 | 146.9 | 18.97% | 3.83% |
| 2019-09-30 | 3,588 | 159.9 | 17.96% | 3.58% |
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.
Overlap with other funds
19Measured against every other fund on this site, from the same filings. Combined effective holdings is how the pair behaves held in equal size.
| With | Overlap | Shared | Combined effective |
|---|---|---|---|
| ITOT vs VTI | 95.07% | 1,890 | 66.6 |
| ITOT vs IVV | 88.27% | 505 | 58.1 |
| ITOT vs VOO | 85.66% | 475 | 58.2 |
| ITOT vs VT | 58.62% | 1,370 | 97.6 |
| ITOT vs VUG | 51.54% | 143 | 33.9 |
| ITOT vs QQQ | 47.66% | 91 | 49.2 |
| ITOT vs QQQM | 47.3% | 90 | 46.7 |
| ITOT vs VTV | 36.9% | 289 | 120.4 |
| ITOT vs VIG | 36.39% | 310 | 81.5 |
| ITOT vs VGT | 34.8% | 257 | 29.7 |
9 more pairs, down to 0% overlap
| With | Overlap | Shared | Combined effective |
|---|---|---|---|
| ITOT vs XLK | 33.53% | 74 | 31.5 |
| ITOT vs SMH | 17.15% | 21 | 33.1 |
| ITOT vs SCHD | 7% | 93 | 78.5 |
| ITOT vs AGG | 0.17% | 1 | 234.9 |
| ITOT vs SGOV | 0.17% | 1 | 54.4 |
| ITOT vs VEA | 0.11% | 4 | 206.8 |
| ITOT vs VXUS | 0.11% | 4 | 213.4 |
| ITOT vs BND | 0% | 0 | 245.4 |
| ITOT vs VWO | 0% | 1 | 101.1 |
As filed, collateral included
1.54% collateralITOT's filing lists 2,502 positions including 1.54% of net assets in securities-lending cash collateral. Counted as filed the fund reads 65 effective holdings with a top ten of 32.1%; on its own investments — the figure above — it reads 66 with a top ten of 32.12%. 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 2,501 positions in ITOT's Form N-PORT, weight as a share of net assets, securities-lending collateral excluded. Every position, every quarter: listed with the point-in-time files, available on request.
| # | Position | Weight | Cumulative |
|---|---|---|---|
| 1 | NVIDIA Corp. | 6.63% | 6.6% |
| 2 | Apple, Inc. | 5.81% | 12.4% |
| 3 | Microsoft Corp. | 3.79% | 16.2% |
| 4 | Amazon.com, Inc. | 3.19% | 19.4% |
| 5 | Alphabet, Inc. | 2.86% | 22.3% |
| 6 | Broadcom, Inc. | 2.45% | 24.7% |
| 7 | Alphabet, Inc. | 2.29% | 27.0% |
| 8 | Micron Technology, Inc. | 1.78% | 28.8% |
| 9 | Meta Platforms, Inc. | 1.69% | 30.5% |
| 10 | Tesla, Inc. | 1.62% | 32.1% |
| 11 | Eli Lilly & Co. | 1.30% | 33.4% |
| 12 | Advanced Micro Devices, Inc. | 1.30% | 34.7% |
| 13 | Berkshire Hathaway, Inc. | 1.25% | 36.0% |
| 14 | JPMorgan Chase & Co. | 1.20% | 37.2% |
| 15 | Intel Corp. | 0.90% | 38.1% |
By country of issuer
as of 2026-06-30Share of ITOT'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 | 96.71% |
| Ireland° | 1.88% |
| Switzerland | 0.29% |
| Bermuda° | 0.26% |
| Cayman Islands° | 0.16% |
| Netherlands° | 0.14% |
| Liberia° | 0.11% |
| United Kingdom | 0.10% |
Returns the fund reported
2019-07 – 2026-06Monthly total returns from Item B.5 of ITOT'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 0.04 percentage points over 84 months, which is roughly the distributions. Every month with the filing it came from: ITOT.json · all funds.
Who borrows ITOT'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, $1.5bn was out to 31 borrowers, 1.56% of net assets. The largest, JP MORGAN SECURITIES LLC, held 22% of it.
| Borrower | On loan | Share of the loan |
|---|---|---|
| JP MORGAN SECURITIES LLC | $323m | 22.0% |
| BNP PARIBAS PRIME BROKERAGE INTERNATIONAL LIMITED | $166m | 11.3% |
| CITIGROUP GLOBAL MARKETS INC. | $163m | 11.1% |
| MORGAN STANLEY & CO LLC | $109m | 7.4% |
| GOLDMAN SACHS INTERNATIONAL | $91m | 6.2% |
Cash collateral reported against the loan: 1.54% of net assets, 98.5% 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 ITOT has filed, with each borrower: ITOT.json · all funds.
Since the previous filing
2026-03-31 → 2026-06-302,478 positions became 2,487: 64 added (0.6% of the fund at the later date), 55 dropped (0.5% at the earlier date). Half the sum of all weight changes, a turnover proxy: 9.0%. Positions are matched on identifiers, so a security whose identifier changed shows as one drop and one add. Every filing of ITOT 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 |
|---|---|---|---|---|---|
| Micron Technology, Inc. | 0.60% | 1.78% | Microsoft Corp. | 4.34% | 3.79% |
| Advanced Micro Devices, Inc. | 0.52% | 1.30% | Exxon Mobil Corp. | 1.12% | 0.78% |
| Intel Corp. | 0.33% | 0.90% | Meta Platforms, Inc. | 1.98% | 1.69% |
| Applied Materials, Inc. | 0.43% | 0.78% | Netflix, Inc. | 0.64% | 0.41% |
| Lam Research Corp. | 0.42% | 0.74% | Chevron Corp. | 0.61% | 0.42% |
| Sandisk Corp. | 0.15% | 0.46% | Walmart, Inc. | 0.86% | 0.68% |
New: Space Exploration Technologies Corp. (0.14%), Honeywell International, Inc. (0.10%), Honeywell Aerospace, Inc. (0.10%), Carnival Corp. Ltd. (0.05%), Sunbelt Rentals Holdings, Inc. (0.04%), DuPont de Nemours, Inc. (0.03%). Gone: Honeywell International, Inc. (0.23%), Carnival Corp. (0.05%), Coterra Energy, Inc. (0.04%), DuPont de Nemours, Inc. (0.03%), Hologic, Inc. (0.03%), Masimo Corp. (0.01%).
Asset categories and pricing
as of 2026-06-3098.31% equity, 1.69% 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 $94.14B. Notional of an interest-rate or currency swap is not equity exposure.
1 option positions filed, 0 of them written. The book as filed:
| Type | Side | Strike | Expiry | Underlying |
|---|---|---|---|---|
| Call | Purchased | 17 | 2026-11-20 | as filed, not named |
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 ITOT (66). Same filings, same arithmetic. Position in this list says nothing about which fund is better.
| Fund | Reports | Behaves like | Top ten | As of |
|---|---|---|---|---|
| PBW Invesco WilderHill Clean Energy ETF | 69 | 64.2 | 21.39% | 2026-04-30 |
| DFEM Dimensional Emerging Markets Core Equity 2 ETF | 6,690 | 64.3 | 24.28% | 2026-07-31 |
| MGV Vanguard Mega Cap Value Index Fund | 125 | 64.5 | 28.31% | 2026-05-31 |
| IDMO Invesco S&P International Developed Momentum ETF | 192 | 65.2 | 29.14% | 2026-07-31 |
| DIVB iShares Core Dividend ETF | 384 | 65.4 | 30.3% | 2026-07-31 |
| FLIN Franklin FTSE India ETF | 279 | 66.1 | 30.17% | 2026-06-30 |
| NFRA FlexShares STOXX Global Broad Infrastructure Index Fund | 200 | 66.9 | 28.61% | 2026-07-31 |
| VTI Vanguard Total Stock Market Index Fund | 3,539 | 67 | 32.02% | 2026-06-30 |
| IWV iShares Russell 3000 ETF | 2,595 | 67.1 | 32.01% | 2026-06-30 |
| JHEM John Hancock Multifactor Emerging Markets ETF | 954 | 67.5 | 28.17% | 2026-06-30 |
Measures applied in the essays
4On video
4The same filings read aloud in under a minute. Links open YouTube; nothing from it loads on this page.
Essays that examine ITOT
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