Share of weekly volume by session window: seven household names, week of July 13, 2026

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 2026-08-01, from Can You Trade US Stocks 24 Hours a Day?.

Rows × columns

7 × 4

Computed

2026-08-01

Completeness

No missing values

Source

US exchange, SIP and OPRA market data

Licence

Strasmore terms · free, no signup

Formats

JSON · CSV · the SQL below

What each column holds

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 2026-08-01, and the query below is what returned them.

WITH bars AS (
    SELECT ticker,
           toTimeZone(window_start, 'America/New_York') AS et,
           toFloat64(volume) AS shares
    FROM global_markets.delayed_stocks_minute_aggs
    WHERE ticker IN ('AAPL', 'MSFT', 'NVDA', 'TSLA', 'SPY', 'KO', 'PG')
      AND window_start >= toDateTime('2026-07-13 08:00:00', 'UTC')
      AND window_start <  toDateTime('2026-07-18 00:00:00', 'UTC')
)
SELECT ticker,
       round(100 * sumIf(shares, toHour(et) * 60 + toMinute(et) < 570) / sum(shares), 2) AS premarket_pct,
       round(100 * sumIf(shares, toHour(et) * 60 + toMinute(et) BETWEEN 570 AND 959) / sum(shares), 2) AS core_session_pct,
       round(100 * sumIf(shares, toHour(et) * 60 + toMinute(et) >= 960) / sum(shares), 2) AS after_hours_pct
FROM bars
GROUP BY ticker
ORDER BY premarket_pct + after_hours_pct DESC