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Contracts traded per session into the May 15, 2026 expiration, by root

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 2026-10-24, from When Do SPX Options Stop Trading?.

as of series 5×4read in context →
Contracts traded per session into the May 15, 2026 expiration, by root — 5 rows by 4 columns, computed from US exchange, SIP and OPRA data.
session_dateday_labelam_settled_spx_contractsweekly_spxw_contracts
2026-05-11Mon May 116576698800
2026-05-12Tue May 1277897121974
2026-05-13Wed May 13104268180476
2026-05-14Thu May 14238633547265
2026-05-15Fri May 1503003170
Rows × columns
5 × 4
Period covered
to
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 Contracts traded per session into the May 15, 2026 expiration, by root, derived from the stored result.
ColumnTypeRangeNotes
session_date date 2026-05-11 to 2026-05-15
day_label text 5 distinct values (Fri May 15, Mon May 11, Thu May 14…)
am_settled_spx_contracts number 0 to 238,633 count
weekly_spxw_contracts number 98,800 to 3,003,170 count

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.

Run it yourself

This is the exact query behind the result above. Change a ticker, a date or a column and run it against the warehouse — no account, no key. The no-signup tier is smaller than the one this page was computed on; a query that reaches past it comes back saying which plan runs it.

SELECT
    toString(toDate(toTimeZone(window_start, 'America/New_York')))                    AS session_date,
    formatDateTime(toDate(toTimeZone(window_start, 'America/New_York')), '%a %b %e')  AS day_label,
    sum(if(startsWith(ticker, 'O:SPXW'), 0, volume))                                  AS am_settled_spx_contracts,
    sum(if(startsWith(ticker, 'O:SPXW'), volume, 0))                                  AS weekly_spxw_contracts
FROM global_markets.options_minute_aggs
WHERE (startsWith(ticker, 'O:SPX260515') OR startsWith(ticker, 'O:SPXW260515'))
  AND window_start >= toDateTime('2026-05-11 08:00:00', 'UTC')
  AND window_start <  toDateTime('2026-05-16 04:00:00', 'UTC')
GROUP BY session_date, day_label
ORDER BY session_date
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More from this analysisWhen Do SPX Options Stop Trading?
Prior close to expiration-Friday open, monthly expirations (SPY, percent) series 12×5 → The final hours of the AM settled SPX monthly, Thursday May 14, 2026 (ET) series 8×3 → The final hours of the expiring SPXW weekly, Friday May 15, 2026 (ET) series 7×4 → Expiration Friday, 8:00 a.m. to 10:00 a.m. ET: which root is trading series 2×5 → The prices behind the arithmetic: Thursday's close, the strike, Friday's open and close series 29×6 → Every monthly expiration since January 2024: the overnight gap, then the session that followed series 29×4 → See all 3,293 queries →