Implied volatility by strike: SPY options expiring August 21 2026, as of July 15 2026

Answered against 22 years of US equities and 12 years of US options data and published with the query that produced it. This result is stored as of 2026-07-31, from How to Read an Option Chain, Column by Column.

Rows × columns

11 × 3

Computed

2026-07-31

Completeness

No missing values

Source

US exchange, SIP and OPRA market data

Licence

Strasmore terms · free, no signup

Formats

JSON · CSV · the SQL below

What each column holds

Computed from Strasmore's warehouse of US exchange, SIP and OPRA market data. Equity prices are delayed; options greeks and implied volatility are end-of-day. This result is stored, not recomputed on load — it is exactly the numbers that were returned on 2026-07-31, and the query below is what returned them.

SELECT toString(toUInt32(strike_price)) AS strike,
       round(100 * avg(implied_volatility), 1) AS implied_vol_pct,
       round(100 * (strike_price / any(underlying_close) - 1), 1) AS strike_vs_spot_pct
FROM global_markets.options_greeks
WHERE underlying_symbol = 'SPY'
  AND date = toDate('2026-07-15')
  AND expiration_date = toDate('2026-08-21')
  AND strike_price BETWEEN 640 AND 840
  AND toUInt32(strike_price) % 20 = 0
  AND iv_converged
  AND implied_volatility BETWEEN 0.02 AND 3
GROUP BY strike_price
ORDER BY strike_price