# Commentary: When stock analysts move markets, should retail investors follow?

- URL: https://talkfuse.com/story/commentary-when-stock-analysts-move-markets-should-retail-investors-follow/
- Published: 2026-11-03T22:00:00+00:00
- Updated: 2026-11-03T23:02:07+00:00
- Original publisher: CNA (publisher lean: Centre)
- Original article: https://www.channelnewsasia.com/commentary/stock-market-analyst-downgrade-what-it-means-retail-investors-ocbc-sheng-siong-6515921
- Topics: Business, Markets, World

## Key points

- Analyst downgrades can move shares when they add new information.
- Only about one in eight recommendation changes had a large effect in a US study.
- Retail investors may see the news after prices have already adjusted.

## Summary

OCBC and Sheng Siong shares fell after analysts downgraded them, prompting questions about why one recommendation can move a stock and whether retail investors should act on such news. NTU finance professor Roger Loh says investors should be cautious: reports can affect prices when they bring new information, but many recommendations have little market impact.

A study of more than 150,000 recommendation changes for US stocks found that about one in eight led to a large price move in the predicted direction, and nearly all the reaction to influential reports occurred on the issue date and the next trading day. Analysts with a strong track record, contrarian views or revised earnings forecasts were more likely to move prices; smaller and growth companies were also more responsive. The OCBC and Sheng Siong downgrades included lower earnings forecasts, and Citi’s OCBC call went against the more positive consensus, but investors may hear about the news after much of the price adjustment has happened.

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Summarised by TalkFuse (https://talkfuse.com/). Quote the original publisher for the reporting and link this page for the summary and discussion.