DataSinking

Full-text A-share financial reports, as clean Markdown.

DataSinking is a China stock market data API that serves full-text A-share financial reports — annual, semi-annual and quarterly — as clean Markdown. Download China A-share financial statements (balance sheet, income statement, cash flow) by FMP-style symbol (600519.SS) or filter by exchange / report period, through a simple REST API. Raw PDFs are sourced from cninfo.com.cn (the officially designated disclosure platform) and parsed into structured Markdown with YAML frontmatter, preserved headings, paragraphs and tables — ready for LLM reading and analysis.

What this repo is

Examples, research and tutorials showing how to work with financial report data, including reproducing the presentation styles found in financial-report research papers.

datasinking/
├── examples/     # Example scripts: pull data from the API and analyze it
├── research/     # Research notes / blog posts (reproducing paper-style presentation)
├── datasinking/  # Python client — pip install datasinking
├── llm-examples.md  # Ask an LLM — no code needed (3 end-to-end examples)
├── api-examples.md  # 7 examples × 3 interfaces (curl / Python / LLM)
└── README.md

Quick start

1. Get an API key at datasink.ing
2. One line (FMP-style ?apikey=):

curl "https://api.datasink.ing/documents?symbol=600519.SS&with_content=1&apikey=YOUR_KEY"

Or in Python:

pip install datasinking

from datasinking import DataSinking

ds = DataSinking("YOUR_KEY")
for r in ds.get_stock_reports("600519.SS", limit=3):
    print(r["report_period"], r["title"], len(r["content"]), "chars")

All five functions (curl / Python / LLM): api-examples.md.

Ask an LLM (no code)

Don't want to write code? Point any LLM at datasink.ing, give it your API key, and ask in plain language. See llm-examples.md for three end-to-end examples — explore coverage, list a company's reports, and extract a figure with correct units.

Examples (examples/)

Every example pulls from the live API and runs as-is.

03_download_exchange.py fetches every report on an exchange (e.g. all of Shenzhen — 130k+ documents). Free keys work too, but fall back to slow per-document fetching (1 req/s + shared daily quota); a paid (yearly) key is strongly recommended for full-exchange downloads.

Research (research/)

research/ hosts research notes and blog posts, each based on DataSinking data with the source cited. You can reproduce charts and presentations found in financial-report research papers, e.g.:

• Long-term revenue / profit trends
• Industry comparison and distribution
• Time series of financial metrics

Start from research/TEMPLATE.md.

Data overview

Data source

All reports originate from cninfo.com.cn, the officially designated information disclosure platform of China's listed companies.

License

MIT