Reviews morning flows and themes to watch in the afternoon.
ABOUT
About Signal Letter
Signal Letter is an AI-assisted market brief for investors who want a faster read on US stock and A-share signals.
It organizes unusual moves, trading activity, news catalysts, and risk alerts into a concise daily research note.
COVERAGE
Publishing Schedule
All times are Beijing Time. Publishing may be delayed slightly by data collection, source checks, and content generation.
Tracks late-session flows, relative strength, and pre-close risk.
Summarizes premarket movers, active tickers, and event clues.
Reads post-open themes, long and short signals, and volatility risk.
Reviews early overnight moves and shifts in focus areas.
PROCESS
How It Is Generated
Each brief is assisted by GPT-5.5 Research Engine using market data and publicly verifiable information.
The process may reference price action, volume and turnover, key levels, company filings, earnings reports, investor relations materials, and credible public news sources.
When a specific catalyst is mentioned, source links are preserved where possible so readers can verify the underlying information.
PURPOSE
What It Is For
Signal Letter is not built to predict every market move. It is built to identify where attention is shifting, which tickers deserve observation, and where risk is rising.
Clear information and disciplined risk awareness matter more than chasing every theme.
IMPORTANT NOTICE
Important Notice
The content on this site is for market research, information organization, and educational discussion only. It is not investment advice, a trading instruction, or a promise of returns.
Securities markets involve risk. Any investment decision should be based on your own judgment, risk tolerance, and appropriate professional advice.