Filing counts on the last weekday of each 2026 month, with prior-year weekday month-ends as controls
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 2026-07-26, from SEC EDGAR Index Gap: the Missing Month-Ends.
| d | filings | month_ends_on |
|---|---|---|
| 2026-01-30 | 4332 | Saturday |
| 2026-02-27 | 7870 | Saturday |
| 2026-03-31 | 55 | weekday (the gap day) |
| 2026-04-30 | 34 | weekday (the gap day) |
| 2026-05-29 | 5527 | Sunday |
| 2026-06-30 | 31 | weekday (the gap day) |
| 2025-09-30 | 3460 | weekday, full in the prior year |
| 2025-12-31 | 2289 | weekday, full in the prior year |
- Rows × columns
- 8 × 3
- Period covered
- to
- Computed
- Completeness
- No missing values
- Source
- US exchange, SIP and OPRA market data
- Licence
- Strasmore terms · free, no signup
What each column holds
| Column | Type | Range | Notes |
|---|---|---|---|
d |
date | 2025-09-30 to 2026-06-30 | |
filings |
number | 31 to 7,870 | |
month_ends_on |
text | 4 distinct values (Saturday, Sunday, weekday (the gap day)…) |
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 d, filings, month_ends_on FROM (
SELECT '2026-01-30' AS d, (SELECT uniqExact(accession_number) FROM global_markets.stocks_sec_edgar_index WHERE filing_date = toDate('2026-01-30')) AS filings, 'Saturday' AS month_ends_on, 1 AS ord
UNION ALL SELECT '2026-02-27', (SELECT uniqExact(accession_number) FROM global_markets.stocks_sec_edgar_index WHERE filing_date = toDate('2026-02-27')), 'Saturday', 2
UNION ALL SELECT '2026-03-31', (SELECT uniqExact(accession_number) FROM global_markets.stocks_sec_edgar_index WHERE filing_date = toDate('2026-03-31')), 'weekday (the gap day)', 3
UNION ALL SELECT '2026-04-30', (SELECT uniqExact(accession_number) FROM global_markets.stocks_sec_edgar_index WHERE filing_date = toDate('2026-04-30')), 'weekday (the gap day)', 4
UNION ALL SELECT '2026-05-29', (SELECT uniqExact(accession_number) FROM global_markets.stocks_sec_edgar_index WHERE filing_date = toDate('2026-05-29')), 'Sunday', 5
UNION ALL SELECT '2026-06-30', (SELECT uniqExact(accession_number) FROM global_markets.stocks_sec_edgar_index WHERE filing_date = toDate('2026-06-30')), 'weekday (the gap day)', 6
UNION ALL SELECT '2025-09-30', (SELECT uniqExact(accession_number) FROM global_markets.stocks_sec_edgar_index WHERE filing_date = toDate('2025-09-30')), 'weekday, full in the prior year', 7
UNION ALL SELECT '2025-12-31', (SELECT uniqExact(accession_number) FROM global_markets.stocks_sec_edgar_index WHERE filing_date = toDate('2025-12-31')), 'weekday, full in the prior year', 8
) ORDER BY ord
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