End-of-day option chains — price, volume, open interest and implied vol across every OPRA-listed contract, via a licensed redistributor.
| Field | Type | Note |
|---|---|---|
| underlying | string | |
| expiry | date | |
| strike | number | |
| right | enum | call · put |
| close | number | |
| volume | number | |
| openInterest | number | |
| impliedVol | number |
| underlying | expiry | strike | right |
|---|---|---|---|
| AAPL | 2026-07-17 | 200 | call |
| SPY | 2026-07-17 | 560 | put |
| NVDA | 2026-08-21 | 180 | call |
Illustrative schema preview — synthetic values, not a live feed.
Business tier via a licensed OPRA redistributor. EOD/delayed options carry no per-user display fee (unlike real-time).
OPRA data needs a redistributor agreement (~$1,500/mo real-time; delayed ~$250/yr + $250/mo). Candidate sources: Cboe DataShop, dxFeed, ORATS. Red, but EOD is the tractable entry.
Research and education only — not financial advice. TENKis not a registered investment adviser or broker-dealer and gives no personalized advice. Every call is impersonal — identical for all users, generated on a schedule from SEC filings plus a delayed/third-party price feed — may be wrong or out of date, and is not a recommendation to buy or sell any security. The operator and an affiliated trading operation may hold or trade the securities TENK rates; see Disclosures. Past performance does not guarantee future results. Do your own research.