{"url":"https://etfiq.com/compare/themes/gdx-vs-idef","section":"compare","title":"GDX vs IDEF: Holdings Overlap & Returns | ETFIQ","description":"Over the year to Oct 28, 2026, GDX returned +19.0% to IDEF's \u22125.7%; 0% of their weight is in the same names. Returns and overlap to Oct 28, 2026.","as_of":"Oct 28, 2026","structured_data":[{"@type":"FAQPage","mainEntity":[{"@type":"Question","name":"Do GDX and IDEF hold the same stocks?","acceptedAnswer":{"@type":"Answer","text":"By their latest filings, 0% of their books are the same securities at the same weight. Overlap is the sum of the smaller weight of every security they share."}},{"@type":"Question","name":"Which is more different from the S&P 500, GDX or IDEF?","acceptedAnswer":{"@type":"Answer","text":"GDX has 12% of its weight in S&P 500 names and IDEF has 42%, so GDX differs more from the index."}},{"@type":"Question","name":"Which is cheaper, GDX or IDEF?","acceptedAnswer":{"@type":"Answer","text":"GDX charges 0.51% a year and IDEF charges 0.55%, so GDX is cheaper. Fees come from each fund's prospectus."}}]},{"@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"name":"ETFIQ","item":"https://etfiq.com/"},{"@type":"ListItem","position":2,"name":"Thematic ETFs","item":"https://etfiq.com/themes/"},{"@type":"ListItem","position":3,"name":"Compare ETFs","item":"https://etfiq.com/compare/"},{"@type":"ListItem","position":4,"name":"GDX vs IDEF","item":"https://etfiq.com/compare/themes/gdx-vs-idef"}]},{"@type":"WebPage","name":"GDX vs IDEF: Holdings Overlap & Returns","description":"Over the year to Oct 28, 2026, GDX returned +19.0% to IDEF's \u22125.7%; 0% of their weight is in the same names. Returns and overlap to Oct 28, 2026.","url":"https://etfiq.com/compare/themes/gdx-vs-idef","dateModified":"2026-10-28","abstract":"Over the year to Oct 28, 2026, GDX returned +19.0% to IDEF's \u22125.7%; 0% of their weight is in the same names.","publisher":{"@id":"https://etfiq.com/#org"},"isPartOf":{"@id":"https://etfiq.com/#website"},"speakable":{"@type":"SpeakableSpecification","cssSelector":[".verdict",".faq"]}},{"@type":"Dataset","name":"ETFIQ comparison of GDX and IDEF","description":"Over the year to Oct 28, 2026, GDX returned +19.0% to IDEF's \u22125.7%; 0% of their weight is in the same names. Returns and overlap to Oct 28, 2026.","dateModified":"2026-10-28","creator":{"@id":"https://etfiq.com/#org"},"isAccessibleForFree":true,"url":"https://etfiq.com/compare/themes/gdx-vs-idef","license":"https://etfiq.com/license/","publisher":{"@id":"https://etfiq.com/#org"},"inLanguage":"en","creativeWorkStatus":"Published","distribution":[{"@type":"DataDownload","encodingFormat":"application/json","contentUrl":"https://etfiq.com/data/thematic.json"}],"variableMeasured":["Weight overlap with the S&P 500","Active share","Holdings","Top ten share of the fund","Total return","Fee for the differing part","Expense ratio"],"keywords":["exchange-traded funds","ETF","Thematic ETFs","fund data","SEC filings"]}],"characters":6604,"truncated":true,"content":"ETFIQ / Thematic ETFs / Compare ETFs / GDX vs IDEF \n ETFIQ etfiq.com \u00b7 independent ETF data \n\n Data as of Oct 28, 2026 .\n\n GDX vs IDEF: Holdings Overlap & Returns\n\n Over the year to Oct 28, 2026, GDX returned +19.0% to IDEF's \u22125.7%; 0% of their weight is in the same names.\n Copy this for sharing \n \n GDX costs 0.04 points a year less; their one-year returns differ by 24.7 points; GDX is 6.9 times larger.\n GDX and IDEF at a glance. As of Oct 28, 2026. Source: ETFIQ. GDX IDEF \n Expense ratio 0.51% 0.55% \n Net assets, as of Oct 27, 2026 $25.6bn $3.7bn \n Total return, 1 year +19.0% \u22125.7% \n What it ","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, GDX against IDEF, data as of Oct 28, 2026. https://etfiq.com/compare/themes/gdx-vs-idef","a":{"ticker":"GDX","name":"VanEck Gold Miners ETF","issuer":"VanEck","desk":"themes","as_of":"2026-10-28","verdict":"Over the year to Oct 28, 2026, GDX returned 19.0%, against 13.4% for ACWI.","url":"https://etfiq.com/funds/gdx","key_facts":[{"label":"Already in the S&P 500","value":"11.7%","as_of":"2026-10-27","source":"the issuer\u2019s daily holdings file"},{"label":"Active share vs the S&P 500","value":"99.8%","as_of":"2026-10-27","source":"ETFIQ"},{"label":"Top ten holdings","value":"60.1%","as_of":"2026-10-27","source":"the issuer\u2019s daily holdings file"},{"label":"Total return, 1 year","value":"+19.0%","as_of":"2026-10-28","source":"computed by ETFIQ from Tiingo daily prices"},{"label":"12-month yield, capital gains included, on its starting price","value":"0.9%","as_of":"2026-10-28","source":"computed by ETFIQ from Tiingo daily prices and distributions"},{"label":"Last payment (paid annually), ex-date Dec 22, 2025","value":"$0.6331","as_of":"2025-12-22","source":"Tiingo end-of-day distributions"},{"label":"Net assets","value":"$25.6bn","as_of":"2026-10-27","source":"the issuer\u2019s daily holdings, added up, as of Oct 27, 2026"},{"label":"Expense ratio","value":"0.51%","as_of":"2026-04-29","source":"485BPOS XBRL, Apr 29, 2026"}]},"b":{"ticker":"IDEF","name":"iShares Defense Industrials and Tech Active ETF","issuer":"iShares","desk":"themes","as_of":"2026-10-28","verdict":"Over the year to Oct 28, 2026, IDEF lost 5.7%.","url":"https://etfiq.com/funds/idef","key_facts":[{"label":"Already in the S&P 500","value":"42.5%","as_of":"2026-10-27","source":"the issuer\u2019s daily holdings file"},{"label":"Active share vs the S&P 500","value":"92.2%","as_of":"2026-10-27","source":"ETFIQ"},{"label":"Top ten holdings","value":"37.3%","as_of":"2026-10-27","source":"the issuer\u2019s daily holdings file"},{"label":"Total return, 1 year","value":"\u22125.7%","as_of":"2026-10-28","source":"computed by ETFIQ from Tiingo daily prices"},{"label":"12-month yield, capital gains included, on its starting price","value":"0.3%","as_of":"2026-10-28","source":"computed by ETFIQ from Tiingo daily prices and distributions"},{"label":"Last payment, ex-date Jun 15, 2026","value":"$0.0542","as_of":"2026-06-15","source":"Tiingo end-of-day distributions"},{"label":"Net assets","value":"$3.7bn","as_of":"2026-10-28","source":"the issuer\u2019s own daily fund list, as of Oct 28, 2026"},{"label":"Expense ratio","value":"0.55%","as_of":"2026-08-28","source":"485BPOS XBRL, Aug 28, 2026"}]},"overlap_pct":0,"full_text_at":"https://etfiq.com/compare/themes/gdx-vs-idef"}