phoenix_open_split
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 2026-09-24, from us-stock-market-hours-mountain-time.
| phoenix_open | denver_open | sessions |
|---|---|---|
| 06:30 | 07:30 | 188 |
| 07:30 | 07:30 | 85 |
- Rows × columns
- 2 × 3
- 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 |
|---|---|---|---|
phoenix_open |
text | 2 distinct values (06:30, 07:30) | |
denver_open |
text | 1 distinct value (07:30) | |
sessions |
number | 85 to 188 |
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.
WITH session_opens AS
(
SELECT
toDate(toTimeZone(window_start, 'America/New_York')) AS session_date,
min(window_start) AS open_utc
FROM global_markets.delayed_stocks_minute_aggs
WHERE ticker = 'SPY'
AND window_start >= today() - 400
AND window_start < today() - 2
AND toHour(toTimeZone(window_start, 'America/New_York')) = 9
AND toMinute(toTimeZone(window_start, 'America/New_York')) = 30
GROUP BY session_date
)
SELECT
formatDateTime(toTimeZone(open_utc, 'America/Phoenix'), '%H:%i') AS phoenix_open,
formatDateTime(toTimeZone(open_utc, 'America/Denver'), '%H:%i') AS denver_open,
count() AS sessions
FROM session_opens
GROUP BY phoenix_open, denver_open
ORDER BY phoenix_open
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