coverage
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 2026-09-28, from dow-theory-and-transport-confirmation.
| ticker | session_count | first_session | last_session |
|---|---|---|---|
| DIA | 5799 | 2003-09-10 | 2026-09-28 |
| IYT | 5777 | 2003-10-10 | 2026-09-28 |
- Rows × columns
- 2 × 4
- 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 |
|---|---|---|---|
ticker |
text | 2 distinct values (DIA, IYT) | |
session_count |
number | 5,777 to 5,799 | count |
first_session |
date | 2003-09-10 to 2003-10-10 | |
last_session |
date | 2026-09-28 |
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
ticker,
countDistinct(date) AS session_count,
toString(min(date)) AS first_session,
toString(max(date)) AS last_session
FROM global_markets.stocks_daily_aggs
WHERE ticker IN ('DIA', 'IYT')
GROUP BY ticker
ORDER BY ticker
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