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The total is a call-volume-weighted blend of the two buckets

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 2026-08-22, from Equity vs Index Put/Call Ratio: What's High?.

as of ranking 11×4read in context →
The total is a call-volume-weighted blend of the two buckets — 11 rows by 4 columns, computed from US exchange, SIP and OPRA data.
index_share_of_call_volumeequity_ratioindex_ratioblended_total_ratio
0%0.5561.3960.556
10%0.5561.3960.64
20%0.5561.3960.724
30%0.5561.3960.808
40%0.5561.3960.892
50%0.5561.3960.976
60%0.5561.3961.06
70%0.5561.3961.144
80%0.5561.3961.228
90%0.5561.3961.312
100%0.5561.3961.396
Rows × columns
11 × 4
Computed
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

Column definitions for The total is a call-volume-weighted blend of the two buckets, derived from the stored result.
ColumnTypeRangeNotes
index_share_of_call_volume text 11 distinct values (0%, 10%, 100%…)
equity_ratio number every row is 0.556 ratio or rate
index_ratio number every row is 1.396 ratio or rate
blended_total_ratio number 0.556 to 1.396 ratio or rate

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 , and the query below is what returned them.

the exact SQL behind every number 
WITH components AS
(
    SELECT
        round(sumIf(volume, startsWith(lower(option_type), 'p') AND underlying_symbol NOT IN ('SPY', 'QQQ', 'IWM', 'DIA'))
              / sumIf(volume, startsWith(lower(option_type), 'c') AND underlying_symbol NOT IN ('SPY', 'QQQ', 'IWM', 'DIA')), 3) AS equity_ratio,
        round(sumIf(volume, startsWith(lower(option_type), 'p') AND underlying_symbol IN ('SPY', 'QQQ', 'IWM', 'DIA'))
              / sumIf(volume, startsWith(lower(option_type), 'c') AND underlying_symbol IN ('SPY', 'QQQ', 'IWM', 'DIA')), 3) AS index_ratio
    FROM global_markets.options_greeks
    WHERE date >= (SELECT toDate(max(date))
                   FROM global_markets.options_greeks
                   WHERE volume > 0) - 60
      AND volume > 0
      AND underlying_symbol IN ('AAPL', 'MSFT', 'NVDA', 'AMZN', 'TSLA', 'JPM', 'KO', 'JNJ',
                                'SPY', 'QQQ', 'IWM', 'DIA')
    HAVING sumIf(volume, startsWith(lower(option_type), 'c') AND underlying_symbol IN ('SPY', 'QQQ', 'IWM', 'DIA')) > 0
       AND sumIf(volume, startsWith(lower(option_type), 'c') AND underlying_symbol NOT IN ('SPY', 'QQQ', 'IWM', 'DIA')) > 0
)
SELECT
    concat(toString(step * 10), '%')                                    AS index_share_of_call_volume,
    equity_ratio,
    index_ratio,
    round(equity_ratio + (index_ratio - equity_ratio) * (step / 10), 3) AS blended_total_ratio
FROM
(
    SELECT
        equity_ratio,
        index_ratio,
        arrayJoin(range(11)) AS step
    FROM components
)
ORDER BY step

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