Introduction to DawnScan
A scanner service that automatically captures pre-breakout early signals for US stocks — we transparently disclose our operational purpose, methodology, and data sources.
What is DawnScan?
DawnScan is a US stock monitoring service that automatically scans over 6,000 NASDAQ and NYSE listed stocks after market close each day to capture technical preparation signals before a surge (pre-breakout early signals).
The goal is to identify stocks that are not already significantly up, but are in a state just before a breakout, such as volatility contraction, accumulation, and relative strength advantage. The scanner results are accompanied by AI-generated explanations in Korean, and the hit rate is transparently disclosed for both successes and failures.
Operational Purpose and Entity
DawnScan operates as a reference tool for individual investors. It is not intended for investment solicitation, asset management, or financial brokerage.
The operator is a software engineer and an individual interested in US stock investment who developed it for personal use and expanded it into a public service. For inquiries related to the service, please use the contact page.
Methodology Summary
The scanner evaluates the following technical signals to select top stocks.
- Bollinger Squeeze — detection of volatility contraction (energy compression)
- OBV Accumulation — leading rise in supply and demand during price consolidation
- Relative Strength (RS) — price advantage compared to the S&P 500
- VCP Base — convergence of price range below resistance
- RSI Pullback — preparation period for a rebound without overheating
- ADX, Volume, Gap Up — detection of trend strength and supply/demand anomalies
The full explanation of the algorithm is available on the methodology page.
Data Sources
- Stock Price and Volume OHLCV — yfinance (Yahoo Finance unofficial API, up to 20 minutes delayed)
- Dividend Information — yfinance
- AI Explanation Generation — LLM (large language model) via litellm
- Stock Universe — self-collected data from NASDAQ and NYSE listed stocks
yfinance is an unofficial data source for Yahoo Finance, and some stock data may be delayed or missing. It is not real-time data, and accuracy of the figures is not guaranteed.
SNS / Channels
X (Twitter): @dawnbrief — sharing summaries of scan results and market notes.