STRASMORE/EXPLORE 2,170 QUERIES

The aftermath: when the May 5 close was reclaimed, and when the panic low broke for real

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 2026-07-26, from The 2010 Flash Crash, Minute by Minute.

as of scalar 1×7read in context →
flash crash low
105
may5 close
116.83
first close above may5
2010-05-12
sessions until reclaim
4
first close below low
2010-06-29
close that session
104.22
sessions until break
37
Rows × columns
1 × 7
Period covered
Computed
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

Column definitions for The aftermath: when the May 5 close was reclaimed, and when the panic low broke for real, derived from the stored result.
ColumnTypeRangeNotes
flash_crash_low number every row is 105 US dollars
may5_close number every row is 116.83 US dollars
first_close_above_may5 date 2010-05-12
sessions_until_reclaim number every row is 4
first_close_below_low date 2010-06-29
close_that_session number every row is 104.22 US dollars
sessions_until_break number every row is 37

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.

the exact SQL behind every number 
WITH
    (
        SELECT minIf(toFloat64(low), (toHour(toTimeZone(window_start, 'America/New_York')) * 60 + toMinute(toTimeZone(window_start, 'America/New_York'))) BETWEEN 570 AND 959)
        FROM global_markets.delayed_stocks_minute_aggs
        WHERE ticker = 'SPY'
          AND window_start >= toDateTime('2010-05-06 04:00:00') AND window_start < toDateTime('2010-05-07 00:00:00')
    ) AS flash_low
SELECT
    round(any(flash_low), 2) AS flash_crash_low,
    round(any(may5_close), 2) AS may5_close,
    toString(any(first_above_date)) AS first_close_above_may5,
    countIf(et_date > toDate('2010-05-06') AND et_date <= first_above_date) AS sessions_until_reclaim,
    toString(any(first_below_date)) AS first_close_below_low,
    round(anyIf(close_usd, et_date = first_below_date), 2) AS close_that_session,
    countIf(et_date > toDate('2010-05-06') AND et_date <= first_below_date) AS sessions_until_break
FROM (
    SELECT et_date, close_usd, flash_low, may5_close,
           min(if(et_date > toDate('2010-05-06') AND close_usd < flash_low, et_date, toDate('2100-01-01'))) OVER () AS first_below_date,
           min(if(et_date > toDate('2010-05-06') AND close_usd > may5_close, et_date, toDate('2100-01-01'))) OVER () AS first_above_date
    FROM (
        SELECT et_date, close_usd, flash_low,
               max(if(et_date = toDate('2010-05-05'), close_usd, 0)) OVER () AS may5_close
        FROM (
            SELECT
                toDate(toTimeZone(window_start, 'America/New_York')) AS et_date,
                round(argMaxIf(toFloat64(close), window_start, (toHour(toTimeZone(window_start, 'America/New_York')) * 60 + toMinute(toTimeZone(window_start, 'America/New_York'))) BETWEEN 570 AND 959), 2) AS close_usd,
                flash_low
            FROM global_markets.delayed_stocks_minute_aggs
            WHERE ticker = 'SPY'
              AND window_start >= toDateTime('2010-05-05 04:00:00') AND window_start < toDateTime('2011-01-01 00:00:00')
            GROUP BY et_date
        )
    )
)

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More from this analysisThe 2010 Flash Crash, Minute by Minute
SPY on May 6, 2010: the flash crash day, receipted scalar 1×10 → SPY at one-minute resolution, 2:00–3:30 pm ET on May 6, 2010 table 90×4 → Crash-window damage by name: low vs the 2:30 pm ET reference table 6×6 → The steepest single minutes: biggest open-to-low drops, 2:00–3:30 pm ET table 5×5 → Five famous crash sessions: depth of the low and the bounce off it (SPY) series 5×4 → The famous casualties on the raw trade tape, 2:30–3:30 pm ET table 4×6 → See all 2,170 queries →