KOSPI triggers a buy-side sidecar curb as chip stocks surge on July 31

The report said a buy-side sidecar restriction was triggered as large semiconductor stocks and the KOSPI surged early on July 31. The cited index gain of more than 14% and stock gains of more than 20% were observations at a particular morning time and could differ from closing prices. A sidecar temporarily restricts the effectiveness of program-trading orders following sharp futures-price movements; it differs from a circuit breaker that halts market-wide trading. The topic concerns why market-stabilization mechanisms activate and how concentration in large stocks matters during rapid price changes. Question review (2026-09-14): The original poll was closed because the headline and broad choices did not clearly identify what respondents were judging. Its question, choices, votes, comments, URLs and sources are preserved. The new poll is a separate question with a newly defined scope, not an equivalent version of the old survey. Do not combine their results or compare them as a time series. Separate question: https://askrs.com/en/t/news-scope-20260914-60