mismatch_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 2026-09-26, from us-stock-market-hours-german-time.
| year | mismatch_sessions | mismatch_open_german | mismatch_close_german | aligned_open_german | aligned_close_german |
|---|---|---|---|---|---|
| 2021 | 15 | 14:March | 21:March | 15:January | 22:January |
| 2022 | 15 | 14:March | 21:March | 15:January | 22:January |
| 2023 | 15 | 14:March | 21:March | 15:January | 22:January |
| 2024 | 19 | 14:March | 21:March | 15:January | 22:January |
| 2025 | 20 | 14:March | 21:March | 15:January | 22:January |
- Rows × columns
- 5 × 6
- 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 |
|---|---|---|---|
year |
text | 5 distinct values (2021, 2022, 2023…) | |
mismatch_sessions |
number | 15 to 20 | |
mismatch_open_german |
text | 1 distinct value (14:March) | |
mismatch_close_german |
text | 1 distinct value (21:March) | |
aligned_open_german |
text | 1 distinct value (15:January) | |
aligned_close_german |
text | 1 distinct value (22:January) |
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(toYear(session_date)) AS year,
countIf(gap_hours = 5) AS mismatch_sessions,
anyIf(german_open, gap_hours = 5) AS mismatch_open_german,
anyIf(german_close, gap_hours = 5) AS mismatch_close_german,
anyIf(german_open, gap_hours = 6) AS aligned_open_german,
anyIf(german_close, gap_hours = 6) AS aligned_close_german
FROM
(
SELECT
date AS session_date,
formatDateTime(toTimeZone(toDateTime(concat(toString(date), ' 09:30:00'), 'America/New_York'), 'Europe/Berlin'), '%H:%M') AS german_open,
formatDateTime(toTimeZone(toDateTime(concat(toString(date), ' 16:00:00'), 'America/New_York'), 'Europe/Berlin'), '%H:%M') AS german_close,
toHour(toTimeZone(toDateTime(concat(toString(date), ' 09:30:00'), 'America/New_York'), 'Europe/Berlin')) - 9 AS gap_hours
FROM global_markets.stocks_daily_aggs
WHERE ticker = 'SPY'
AND date >= toStartOfYear(today() - INTERVAL 5 YEAR)
AND date < toStartOfYear(today())
)
GROUP BY year
ORDER BY year
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