{"url":"https://etfiq.com/learn/how-does-an-etf-portfolio-x-ray-work","section":"learn","title":"How does an ETF portfolio X-ray work? | ETFIQ","description":"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.","as_of":"Nov 4, 2026","structured_data":[{"@type":"Article","@id":"https://etfiq.com/learn/how-does-an-etf-portfolio-x-ray-work#article","headline":"How does an ETF portfolio X-ray work?","description":"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.","url":"https://etfiq.com/learn/how-does-an-etf-portfolio-x-ray-work","mainEntityOfPage":"https://etfiq.com/learn/how-does-an-etf-portfolio-x-ray-work","dateModified":"2026-11-04","datePublished":"2026-11-04","author":{"@type":"Organization","name":"ETFIQ Research","url":"https://etfiq.com"},"publisher":{"@type":"Organization","name":"ETFIQ Research","url":"https://etfiq.com"},"about":"How does an ETF portfolio X-ray work?","inLanguage":"en"},{"@type":"FAQPage","@id":"https://etfiq.com/learn/how-does-an-etf-portfolio-x-ray-work#questions","mainEntity":[{"@type":"Question","name":"What does look-through mean?","acceptedAnswer":{"@type":"Answer","text":"Reading a fund down to the companies it owns."}},{"@type":"Question","name":"Is cash counted?","acceptedAnswer":{"@type":"Answer","text":"It is shown on its own row and is never an overlap."}},{"@type":"Question","name":"How current is it?","acceptedAnswer":{"@type":"Answer","text":"As current as each fund\u2019s newest list, with the date shown."}}]},{"@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"name":"ETFIQ","item":"https://etfiq.com/"},{"@type":"ListItem","position":2,"name":"Learn","item":"https://etfiq.com/learn/"},{"@type":"ListItem","position":3,"name":"How does an ETF portfolio X-ray work?","item":"https://etfiq.com/learn/how-does-an-etf-portfolio-x-ray-work"}]},{"@type":"WebPage","name":"How does an ETF portfolio X-ray work?","description":"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.","url":"https://etfiq.com/learn/how-does-an-etf-portfolio-x-ray-work","dateModified":"2026-11-04","isPartOf":{"@type":"WebSite","name":"ETFIQ","url":"https://etfiq.com"},"speakable":{"@type":"SpeakableSpecification","cssSelector":[".lede",".faq"]},"publisher":{"@id":"https://etfiq.com/#org"}}],"characters":1986,"truncated":false,"content":"ETFIQ / Learn / How does an ETF portfolio X-ray work? \n \n How does an ETF portfolio X-ray work?\n Data as of Nov 4, 2026. Rebuilt every trading night.\n 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.\n \n In plain words\n 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. \n ETFIQ reads 3,495 holdings lists, a median of 94 positions each. For every position it multiplies the fund\u2019s weight by your share of the fund, then sums by company. Cash is its own row and never counted as overlap. Each fund\u2019s newest filed list is used and dated, so you can see how current the X-ray is.\n Questions\n What does look-through mean? Reading a fund down to the companies it owns.\n Is cash counted? It is shown on its own row and is never an overlap.\n How current is it? As current as each fund\u2019s newest list, with the date shown.\n Where to next\n My portfolio: see what you own Overlap tool Holdings What is ETF holdings overlap? How do you read an ETF holdings file? How do you see what an ETF really owns? All ETF explainers How ETFIQ computes these numbers \n Cite this page. 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 Free to use with attribution for data ETFIQ computes; issuer data stays under its owner's terms. The underlying files are at Open data .\n Other forms Plain 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 APA ETFIQ. (Nov 4, 2026). How does an ETF portfolio X-ray work?. Retrieved from https://etfiq.com/learn/how-does-an-etf-portfolio-x-ray-work Markdown [How does an ETF portfolio X-ray work? (ETFIQ, Nov 4, 2026)](https://etfiq.com/learn/how-does-an-etf-portfolio-x-ray-work)","source":"ETFIQ, independent ETF data. Recomputed nightly from public filings and prices.","publisher":{"@id":"https://etfiq.com/#org","name":"ETFIQ","url":"https://etfiq.com"},"license":"https://etfiq.com/license/","license_text":"Data ETFIQ computes is free to use with attribution: ETFIQ (etfiq.com). Issuer data stays under its owner's terms.","citation":"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"}