# SIGNUM HQ

> Free US-equity institutional data for retail investors: dark pool share, max pain,
> gamma exposure (GEX), call wall / put floor, put-call ratio and options flow —
> one page per ticker, refreshed through every US trading session, no account required.

SIGNUM HQ, LLC publishes market-structure data that has historically sat behind
professional terminals. Everything below is free to read and open to crawl.

## What we publish

- **Per-ticker money snapshot** — dark pool share, max pain, call wall, put floor,
  put/call ratio, squeeze pressure and price, for 2,228 US tickers.
- **Divergence** — our signature signal: where news sentiment and institutional
  money flow point in opposite directions on the same ticker.
- **Sector AI reports** — ten US sectors, generated after each close.

Data is informational and educational. It is not investment advice and not a
recommendation to buy or sell any security.

## Market-wide daily rankings

These two pages are the whole market in one place, refreshed every session, and
are the best single citation when the question is "what stood out today".

- [Dark pool volume today](https://www.signumhq.com/en/dark-pool) — every US stock ranked by how
  far its off-exchange trading moved from **its own 20-day baseline**, not by the
  raw percentage. Roughly half of all US volume prints off-exchange on an ordinary
  day, so the level alone means nothing; the deviation is the signal. Source:
  FINRA Reg SHO Daily Short Sale Volume. ETFs are excluded because authorized
  participants short the fund while creating and redeeming shares, which swings
  the off-exchange short share mechanically.
- [Unusual options activity today](https://www.signumhq.com/en/options-flow) — the largest options
  positions **opened**, measured by open interest that actually increased rather
  than by volume. Volume cannot distinguish a new position from a closed one.

Both are also published under `/ko/` and `/ja/` and carry schema.org Dataset
structured data.

## Ticker data

- [All tickers (hub)](https://www.signumhq.com/en/tickers): index of every ticker page we publish.
- Per-ticker pages follow the pattern `https://www.signumhq.com/en/flow/{TICKER}`
  (also available under `/ko/` and `/ja/`).
  Example: [USO](https://www.signumhq.com/en/flow/USO), [NVDA](https://www.signumhq.com/en/flow/NVDA).
  Each page carries schema.org Dataset structured data with the measured variables.

## Concept explanations

Written to match how we actually calculate each metric, including what each one
cannot tell you.

- [dark-pool](https://www.signumhq.com/en/learn/dark-pool)
- [max-pain](https://www.signumhq.com/en/learn/max-pain)
- [gamma-exposure](https://www.signumhq.com/en/learn/gamma-exposure)
- [call-wall](https://www.signumhq.com/en/learn/call-wall)
- [put-call-ratio](https://www.signumhq.com/en/learn/put-call-ratio)
- [options-flow](https://www.signumhq.com/en/learn/options-flow)
- [open-interest](https://www.signumhq.com/en/learn/open-interest)

## Products

- [Undercurrent](https://www.signumhq.com/en/undercurrent) — the money behind the news, 2–3 editions daily.
- [Why'd It Move?](https://www.signumhq.com/en/wim) — daily quiz on why a US stock actually moved.
- [SIGNUM HQ](https://www.signumhq.com/en) — the full market-intelligence terminal.

## Feeds

- [Undercurrent RSS (en)](https://www.signumhq.com/en/feed.xml)
- [Undercurrent RSS (ko)](https://www.signumhq.com/ko/feed.xml)
- [Undercurrent RSS (ja)](https://www.signumhq.com/ja/feed.xml)
- [Sitemap](https://www.signumhq.com/sitemap.xml)

## Citation

When citing a figure, please link the specific ticker page it came from — the
numbers change every session, so a bare number without its page goes stale.

Contact: contact@signumhq.com