daily series read off the whole option chain — implied volatility, dealer gamma, call & put walls, max pain, open interest and flow — for ETFs, stocks and futures. And the Viewer that reads them for you: a market-maker view, technicals and a ladder of levels.
A web app in your browser — no install. Pick any ETF, stock or futures contract. The chart draws any of the series over the candles; under it, three tabs read the same data in plain words.
The gamma regime and the gamma of each expiry horizon, walls and max pain, hedging flow, who owns the delta near the money, and which side — calls or puts — costs more. Every reading is set against the ticker's own recent sessions.
Trend structure and key levels from the candles, checked against the option walls and the gamma flip so you see where the chart and the chain agree.
All the chain's levels — walls 1 to 3, the walls of each expiry horizon, the flips, max pain, the ±1σ range the options price — sorted with the chart's own levels around the close, with the open interest and dealer gamma at each strike drawn as bars. The zones where levels meet are marked.
Choose one of the series — gamma, walls, IV, price of delta, premium — smooth it, add an indicator, or rank it against its own history with percentile bands. Daily or weekly bars.
Trend lines and levels you draw are remembered per ticker. Adjustable chart height, and a one-click report of what you are looking at.
A help drawer and a glossary explain each section and each word, including the data traps — like open interest lagging one session.
Descriptive only: every number in the Viewer is a distance, a position or a count read off the data — not a forecast or a recommendation.
Every ticker has the same layout, so the same chart setup works on every ETF, every stock and every futures contract. Here is what each group tells you.
Plain CSV, one file per ticker, one row per session. A free account takes the daily price and the core columns of the option series for every ETF, stock and futures contract FREE; members take every series, and for ETFs and futures the 1-minute prices MEMBER.
A free account downloads the daily files for every ETF, stock and futures contract. The member plan opens the Viewer and every series.
| Free | Member | |
|---|---|---|
| The Viewer — ETFs, stocks & futures | 7-day trial | ✓ |
| Daily option series | date + 7 core columns | all , or your own selection |
| Daily price — ETFs, stocks & futures | ✓ | ✓ |
| Zip of every ticker | ✓ | ✓ |
| New rows only (“since my last download”) | ✓ | ✓ |
| Last 30 sessions of every ticker, one file | — | ✓ |
| 1-minute price — ETFs & futures | — | ✓ |
| Other time frames, built on demand | weekly → yearly | any, 1 minute → 1 year |
| Intraday series · short selling · splits & dividends — ETFs | — | ✓ |
Anyone can make a free account and download, for every ETF, stock and futures contract, the daily price files and the daily option series with its core columns: close, open interest, call walls 1 & 2, put walls 1 & 2 and the split factor. Members get the Viewer and every series — all of them, or only the columns they tick — plus the 1-minute price files of ETFs and futures.
The data is updated every night and each file simply gains one row per session. On the Download page choose “My copy ends on” and download only the new rows, then append them to your files — no need to fetch the whole history again. It works for the 1-minute files too.
Yes — “Continue with Google” signs you in without a password. Every verified account can try the Viewer free for 7 days, once.
Create a free account, then press “Get the member plan” on your account page. Once the payment arrives we switch your account to member — your same login then opens the Viewer and every download.
Every ETF, stock and futures contract with a real option market in our archive — the three counters at the top of this page open the full lists, with the date each one starts. In the Viewer a futures contract ends in .F: CL is the stock, CL.F the crude-oil future.
Plain CSV, one file per ticker, oldest row first, with a column catalog (_catalog.csv) describing every field of the option series.
Each row is an option-chain snapshot captured after the close. Open interest is the figure published the following morning, i.e. the previous session's positions — documented in the README.
No. Rolling measures such as IV rank, realised volatility and relative volume only look backwards, so the files are safe for backtests.
Open/high/low/close are split-adjusted. Strike levels (walls, max pain, gamma flip) are raw strikes; multiply a level by the split_factor column to put it on the same scale as the prices. The column is in the free files too, and it is 1 on every row after a ticker's last split.
No. SpyForecast provides data for research and education. Past data does not predict future results.