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Market Data Timestamps: SIP vs Exchange Clocks
Off exchange AAPL prints by reporting delay, 10 June 2026ranking · 2026-08-14 · 5×3Preview: 5 ranked values, largest first. The same twelve prints, ranked by venue clock and by tape clocktable · 2026-08-14 · 12×7 SIP receive lag by venue, AAPL, 10 June 2026 (microseconds)ranking · 2026-08-14 · 11×4Preview: 11 ranked values, largest first. Prints that change bar when you switch clocks, by bar lengthranking · 2026-08-14 · 4×3Preview: 4 ranked values, largest first.
How Fractional Shares Hit the Tape
Small AAPL print sizes: five sessions in January 2026 against five in July 2026table · 2026-08-12 · 26×3 Average shares per print by month, September 2025 through July 2026series · 2026-08-12 · 11×5Preview: a 11-point series, ending lower. Odd lots, round lots and sub-one-share prints across six names, July 8 to 10, 2026ranking · 2026-08-12 · 6×4Preview: 6 ranked values, largest first. AAPL average print size across the February 2026 boundaryseries · 2026-08-12 · 19×4Preview: a 16-point series, roughly flat.
SIP Feeds vs Direct Exchange Feeds
Which venues sat on the bid side of the quote record, KO on June 16, 2026ranking · 2026-08-09 · 17×3Preview: 16 ranked values, largest first. Quote update traffic across five household tickers, 10:00 to 11:00 a.m. ET on June 16, 2026table · 2026-08-09 · 5×5 US equity exchanges that feed the consolidated tapetable · 2026-08-09 · 18×4 Venue clock to consolidated tape clock, KO quotes on June 16, 2026series · 2026-08-09 · 15×4Preview: a 15-point series, roughly flat.
Why Stock Quotes Are Delayed 15 Minutes
How often the last price changes, minute by minute (June 2026)ranking · 2026-08-06 · 6×3Preview: 6 ranked values, largest first. The 15 minute gap across six household tickers (June 2026)ranking · 2026-08-06 · 6×3Preview: 6 ranked values, largest first. How far SPY travels in 15 minutes, by hour of the session (June 2026)series · 2026-08-06 · 7×4Preview: a 7-point series, ending higher. Live price against a 15 minute delayed view, one SPY sessionseries · 2026-08-06 · 37×5Preview: a 16-point series, ending lower.
Off exchange AAPL prints by reporting delay, 10 June 2026

Off exchange AAPL prints by reporting delay, 10 June 2026

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Off exchange AAPL prints by reporting delay, 10 June 2026 — 5 rows by 3 columns, computed from US exchange, SIP and OPRA data.
reporting_delayprint_countshare_pct
under 1 ms1444924.8
1 to 10 ms1124319.3
10 to 100 ms666811.44
100 ms to 1 s2583144.33
1 s to 10 s740.13
the exact SQL behind every number
WITH off_exchange AS
(
    SELECT
        (toUnixTimestamp64Nano(sip_timestamp)
       - toUnixTimestamp64Nano(participant_timestamp)) / 1000000.0 AS delay_ms
    FROM global_markets.stocks_trades
    WHERE ticker = 'AAPL'
      AND sip_timestamp >= '2026-06-10 14:30:00'
      AND sip_timestamp <  '2026-06-10 15:00:00'
      AND ifNull(toUnixTimestamp64Nano(trf_timestamp), 0) > 0
)
SELECT
    multiIf(delay_ms <     1, 'under 1 ms',
            delay_ms <    10, '1 to 10 ms',
            delay_ms <   100, '10 to 100 ms',
            delay_ms <  1000, '100 ms to 1 s',
            delay_ms < 10000, '1 s to 10 s',
                              'over 10 s')                       AS reporting_delay,
    count()                                                      AS print_count,
    round(100 * count() / (SELECT count() FROM off_exchange), 2) AS share_pct
FROM off_exchange
GROUP BY reporting_delay
ORDER BY min(delay_ms) ASC
$