abertura_empirica
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 2026-11-01, from us-stock-market-hours-brasilia-time.
| date | dia_mes | dia_semana | abertura_brt | abertura_brt_em_horas | salto_de_volume_vs_bloco_anterior |
|---|---|---|---|---|---|
| 2026-03-02 | 02/03 | segunda | 11:30 | 11.5 | 28.5 |
| 2026-03-03 | 03/03 | terça | 11:30 | 11.5 | 23.7 |
| 2026-03-04 | 04/03 | quarta | 11:30 | 11.5 | 14.4 |
| 2026-03-05 | 05/03 | quinta | 11:30 | 11.5 | 17.8 |
| 2026-03-06 | 06/03 | sexta | 11:30 | 11.5 | 18.5 |
| 2026-03-09 | 09/03 | segunda | 10:30 | 10.5 | 19.8 |
| 2026-03-10 | 10/03 | terça | 10:30 | 10.5 | 23.4 |
| 2026-03-11 | 11/03 | quarta | 10:30 | 10.5 | 17.5 |
| 2026-03-12 | 12/03 | quinta | 10:30 | 10.5 | 13.7 |
| 2026-03-13 | 13/03 | sexta | 10:30 | 10.5 | 19.1 |
- Rows × columns
- 10 × 6
- 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 |
|---|---|---|---|
date |
date | 2026-03-02 to 2026-03-13 | |
dia_mes |
text | 10 distinct values (02/03, 03/03, 04/03…) | |
dia_semana |
text | 5 distinct values (quarta, quinta, segunda…) | |
abertura_brt |
text | 2 distinct values (10:30, 11:30) | |
abertura_brt_em_horas |
number | 10.5 to 11.5 | |
salto_de_volume_vs_bloco_anterior |
number | 13.7 to 28.5 | 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.
WITH blocos AS
(
SELECT
toDate(window_start, 'America/New_York') AS dia,
toStartOfInterval(window_start, INTERVAL 30 MINUTE) AS bloco,
bloco - INTERVAL 30 MINUTE AS bloco_anterior,
sum(toFloat64(volume)) AS acoes
FROM global_markets.delayed_stocks_minute_aggs
WHERE ticker = 'SPY'
AND window_start >= toDateTime('2026-03-02 00:00:00', 'America/New_York')
AND window_start < toDateTime('2026-03-14 00:00:00', 'America/New_York')
GROUP BY dia, bloco, bloco_anterior
)
SELECT
toString(atual.dia) AS date,
formatDateTime(atual.dia, '%d/%m') AS dia_mes,
multiIf(toDayOfWeek(atual.dia) = 1, 'segunda', toDayOfWeek(atual.dia) = 2, 'terça',
toDayOfWeek(atual.dia) = 3, 'quarta', toDayOfWeek(atual.dia) = 4, 'quinta',
toDayOfWeek(atual.dia) = 5, 'sexta', toDayOfWeek(atual.dia) = 6, 'sábado',
'domingo') AS dia_semana,
formatDateTime(argMax(atual.bloco, atual.acoes / anterior.acoes), '%H:%i', 'America/Sao_Paulo') AS abertura_brt,
toHour(toTimeZone(argMax(atual.bloco, atual.acoes / anterior.acoes), 'America/Sao_Paulo'))
+ toMinute(toTimeZone(argMax(atual.bloco, atual.acoes / anterior.acoes), 'America/Sao_Paulo')) / 60 AS abertura_brt_em_horas,
round(max(atual.acoes / anterior.acoes), 1) AS salto_de_volume_vs_bloco_anterior
FROM blocos AS atual
INNER JOIN blocos AS anterior
ON anterior.dia = atual.dia
AND anterior.bloco = atual.bloco_anterior
WHERE anterior.acoes > 0
GROUP BY atual.dia
ORDER BY atual.dia
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