ITOT vs VGT: how much do they really overlap?
ITOT (iShares Core S&P Total US Stock Market ETF, tracking the S&P Total Market) and VGT (Vanguard Information Technology ETF, tracking the MSCI US IMI Info Tech 25/50) overlap by roughly 49% by weight. 5 of ITOT's top 10 holdings also appear in VGT. A 50/50 blend of the two behaves like about 30 equally-weighted bets (diversification grade B). In short, the two funds share a meaningful core of the same megacaps, but each also brings real exposure the other lacks.
The same companies, in both funds
These 15 holdings appear in both ITOT and VGT. The weight columns show how much of each fund each name represents.
| Holding | in ITOT | in VGT |
|---|---|---|
| AAPL APPLE INC | 6.78% | 14.33% |
| NVDA NVIDIA CORP | 6.54% | 16.10% |
| MSFT MICROSOFT CORP | 4.64% | 8.28% |
| AVGO BROADCOM INC | 2.54% | 3.84% |
| MU MICRON TECHNOLOGY INC | 1.36% | 5.04% |
| AMD ADVANCED MICRO DEVICES INC | 1.09% | 3.65% |
| CSCO CISCO SYSTEMS INC | 0.62% | 1.82% |
| INTC INTEL CORPORATION | 0.60% | 2.41% |
| AMAT APPLIED MATERIAL INC | 0.55% | 2.26% |
| LRCX LAM RESEARCH CORP | 0.51% | 2.14% |
| PLTR PALANTIR TECHNOLOGIES INC CLASS A | 0.39% | 1.01% |
| PANW PALO ALTO NETWORKS INC | 0.36% | 1.12% |
| TXN TEXAS INSTRUMENT INC | 0.35% | 1.09% |
| KLAC KLA CORP | 0.33% | 1.59% |
| ORCL ORACLE CORP | 0.30% | 0.95% |
Only in ITOT
iShares Core S&P Total US Stock Market ETF — total US market. Its biggest holdings that VGT doesn’t have:
| AMZN AMAZON.COM INC | 3.19% |
| GOOGL ALPHABET INC CLASS A | 2.71% |
| GOOG ALPHABET INC CLASS C | 2.18% |
| META META PLATFORMS INC CLASS A | 1.64% |
| JPM JPMORGAN CHASE & CO | 1.30% |
| BRKB BERKSHIRE HATHAWAY INC CLASS B | 1.30% |
| LLY ELI LILLY | 1.26% |
| TSLA TESLA INC | 1.20% |
Only in VGT
Vanguard Information Technology ETF — US tech sector. Its biggest holdings that ITOT doesn’t have:
| SNDK Sandisk Corp. | 1.33% |
| MRVL Marvell Technology Inc. | 1.05% |
| IBM International Business Machines Corp. | 1.03% |
| WDC Western Digital Corp. | 0.91% |
| APH Amphenol Corp. Class A | 0.87% |
| STX Seagate Technology Holdings plc | 0.87% |
| GLW Corning Inc. | 0.84% |
| QCOM QUALCOMM Inc. | 0.80% |
So — partly overlapping. Should you hold both?
ITOT and VGT share a meaningful core of the same megacaps, but each also brings real exposure the other lacks. Held together they keep a shared megacap core but each still pulls in exposure the other lacks, so a 50/50 blend spreads to ~30 effective positions (grade B).
Holdings as of — ITOT: Jul 30, 2026 (iShares (BlackRock)); VGT: Jun 30, 2026 (Vanguard). Refreshed monthly. Overlap is measured across each fund’s largest holdings (top 50); the diffuse long tail barely moves the math.
See this for YOUR whole portfolio, free →ITOT vs VGT — FAQ
- How much do ITOT and VGT overlap?
- ITOT and VGT overlap by approximately 49% measured by portfolio weight — that is the share of the smaller fund's holdings (by weight) that also sit inside the other. 5 of ITOT's 10 largest holdings are also held by VGT. They share 15 of their listed top holdings in total.
- Is it redundant to hold both ITOT and VGT?
- Because they share a meaningful core of the same megacaps, but each also brings real exposure the other lacks, holding both is partly redundant: you double up on a shared core (AAPL) while each fund still adds distinct exposure. A 50/50 blend has an effective 30 positions and a B diversification grade.
- What does VGT hold that ITOT doesn't?
- VGT's largest holdings that ITOT doesn't hold include SNDK, MRVL, IBM, WDC, APH. Its category is US tech sector, versus ITOT's total US market.
- Which is more concentrated, ITOT or VGT?
- ITOT's top 10 holdings are 59% of its listed weight; VGT's are 71%. The more concentrated fund leans harder on its largest names.