0050 — Index review: semi-annually (June & December). Changes effective ~1 month after announcement.

0056 — Index review: annually (effective January). Changes announced around October–November.

0050 weight: estimated from market cap of top-50 TWSE stocks (market-cap weighted, no cap). 0056 weight: estimated from top-30 stocks by dividend yield among market cap ≥ 1,000億 stocks (15% cap). For reference only — not official ETF data.

Data source: Taiwan Stock Exchange (TWSE) Open API