A decade of SPY put-call ratios: median, low and high of the daily reading by year

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 2026-08-11, from What Is the Put-Call Ratio? A Data Guide.

Rows × columns

12 × 5

Computed

2026-08-11

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 2026-08-11, and the query below is what returned them.

WITH daily AS (
    SELECT toDate(toTimeZone(window_start, 'America/New_York')) AS day,
           sumIf(toFloat64(volume), substring(ticker, length(ticker) - 8, 1) = 'P')
           / sumIf(toFloat64(volume), substring(ticker, length(ticker) - 8, 1) = 'C') AS ratio
    FROM global_markets.options_minute_aggs
    WHERE ticker LIKE 'O:SPY%'
    GROUP BY day
    HAVING sumIf(toFloat64(volume), substring(ticker, length(ticker) - 8, 1) = 'C') > 0
)
SELECT toYear(day) AS year,
       count() AS sessions,
       round(quantileDeterministic(0.5)(ratio, cityHash64(toString(day))), 3) AS median_ratio,
       round(min(ratio), 3) AS low,
       round(max(ratio), 3) AS high
FROM daily
WHERE toYear(day) >= 2015
GROUP BY year
ORDER BY year