Prepared by A-J | Author brand: 盡職生活｜阿J的普通人理財筆記
About the author/site · Vocus @WUCJ ↗ · Editorial policy
Page version: 2026-08-16 | Official or primary sources are preferred for material rules and figures. AI may assist structure, translation, and code, but is not used as the sole factual source.
About the author/site · Vocus @WUCJ ↗ · Editorial policy
Page version: 2026-08-16 | Official or primary sources are preferred for material rules and figures. AI may assist structure, translation, and code, but is not used as the sole factual source.
Beginner principle: Understand the mechanics and risks before buying. Knowing orders, settlement, and costs matters more than finding a hot tip.
Most ordinary stocks use a ±10% daily range
Under current TWSE rules, ordinary stocks and certain ETFs generally use a ±10% range around the opening reference, with specific exceptions.
Limit-up does not mean you can buy
At limit-up there may be many buyers and few sellers; at limit-down there may be many sellers and insufficient buyers.
Intraday stabilization is a separate mechanism
If indicative execution prices move beyond the prescribed range versus a reference, matching can be paused for about two minutes before an auction.
A daily limit is not a maximum-loss guarantee
A 10% daily price range does not prevent multiple consecutive down days from creating a much larger cumulative loss.
What to learn next
- No account yet: start with the account-opening guide
- Planning to buy ETFs: learn fund structure and premiums/discounts
- Considering leverage: first understand margin and stock-backed borrowing risks
Primary / official sources
General investing education only. Market rules and fees can change; use current exchange, regulator, and broker disclosures.