VanEck Vectors Junior Gold Miners ETF (GDXJ US) – Portfolio Construction Methodology

The underlying MVIS Global Junior Gold Miners Index targets small-cap gold/silver miners and related royalty/streaming companies. Pure-play eligibility requires ≥50% revenue (25% for current members) from gold and/or silver activities or qualifying projects; LPs and certain exchanges are ineligible. Investability screens for new inclusions require free float ≥10%, full market cap >USD 150m, three-month ADTV ≥USD 1m and ≥0.25m shares/month over the last six months (lower, retention thresholds apply to incumbents). At semiannual reconstitution (March/September), companies are sorted by full market cap; those covering the top 60% are excluded, while ranks 60%–98% define the junior band, with 55%–60% and 98%–99% buffers for incumbents. Weights follow a modified float-cap scheme: fixed top-5 weights (7%, 6.5%, 6%, 5.5%, 5%), others capped at 4.5%; names with <50% precious-metals exposure are each capped at 4.5% and together at ≤20%. Rebalances occur quarterly on the third Friday of March/June/September/December. To explore GDXJ in more depth, visit our ETF analytics platform for institutional-grade insights — including performance and risk metrics, correlations, sensitivities, and factor exposure: https://www.etfstrategy.com/etf/GDXJ_US