This page explains where our numbers come from, how our daily briefings are produced, and the standards we hold ourselves to. We publish it because trust in financial writing should be earned by transparency, not assumed.
Data sources
- Index and stock prices — closing prices for KOSPI, KOSDAQ, individual stocks, and USD/KRW are pulled from market data feeds and cross-verified against official exchange closing figures. When a news report and our verified feed disagree, the verified feed wins and we say so.
- Investor flow data — daily foreign investor net purchases, retail investor deposit balances, and margin loan balances are collected directly from primary Korean sources including KOFIA (Korea Financial Investment Association) statistics and exchange-published investor trading data.
- Macro context — US index closes, the semiconductor index (SOX), VIX, oil prices, and rates are tracked daily to place Korean moves in their global context.
- News — market-moving headlines are cross-checked against at least one additional source before they appear in our analysis, and we link to what we cite.
How a daily briefing is made
- Automated collection. A proprietary pipeline (SY Quant) collects prices, flows, and macro data every trading day and validates it for gaps and anomalies.
- Analysis. The pipeline runs a multi-model analysis process that scores market regime, sector rotation, and risk signals. AI tools assist in drafting the briefing from this data.
- Human review. Briefings are reviewed for factual accuracy before publication. Numbers in our tables come from the data pipeline, not from a language model’s memory.
We disclose this openly: AI is part of how this site is produced. What makes the content valuable is not who typed it, but the proprietary data underneath it and the accountability we attach to it.
Corrections
When we get something wrong, we correct the article and note the correction in place. Data revised after publication (exchanges occasionally restate figures) is corrected in the next briefing with a note.
Disclaimer
Seoul Closing Bell is an information and analysis publication. It is not investment advice, and nothing here is a recommendation to buy or sell any security. Markets involve risk, including loss of principal. Figures published intraday may differ from final closing values. All investment decisions are the reader’s own responsibility. The author may hold positions in securities discussed on this site.