# How does an ETF portfolio X-ray work?

> As of Nov 4, 2026, ETFIQ can look through 3,495 ETFs to their holdings, with a median of 94 positions each, and adds them up across a whole portfolio.

Data as of Nov 4, 2026. Rebuilt every trading night.

## How does an ETF portfolio X-ray work?

Data as of Nov 4, 2026. Rebuilt every trading night.

As of Nov 4, 2026, ETFIQ can look through 3,495 ETFs to their holdings, with a median of 94 positions each, and adds them up across a whole portfolio.

### In plain words

A portfolio X-ray reads through each fund you own to the companies inside, then adds up the same company across funds. It shows how much of your money sits in one name more than once.

ETFIQ reads 3,495 holdings lists, a median of 94 positions each. For every position it multiplies the fund’s weight by your share of the fund, then sums by company. Cash is its own row and never counted as overlap. Each fund’s newest filed list is used and dated, so you can see how current the X-ray is.

### Questions

What does look-through mean? Reading a fund down to the companies it owns.

Is cash counted? It is shown on its own row and is never an overlap.

How current is it? As current as each fund’s newest list, with the date shown.

### Where to next

---

Source: ETFIQ, independent ETF data. Recomputed nightly from public filings and prices.
Cite: ETFIQ, How does an ETF portfolio X-ray work?, data as of Nov 4, 2026. https://etfiq.com/learn/how-does-an-etf-portfolio-x-ray-work
Licence: https://etfiq.com/license/ Data ETFIQ computes is free to use with attribution: ETFIQ (etfiq.com). Issuer data stays under its owner's terms.
HTML: https://etfiq.com/learn/how-does-an-etf-portfolio-x-ray-work