STRASMORE/EXPLORE 2,170 QUERIES

SPY closes and Treasury yields, September 15-19, 2008: the whipsaw week

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 Lehman's Collapse: The 2008 Tape, Replayed.

as of series 5×6read in context →
SPY closes and Treasury yields, September 15-19, 2008: the whipsaw week — 5 rows by 6 columns, computed from US exchange, SIP and OPRA data.
sessionclose_usdchange_pctshares_mtbill_3m_pcty10_pct
2008-09-15120.34-4.3465.51.023.47
2008-09-16121.871.3577.80.843.48
2008-09-17116.3-4.6620.70.033.41
2008-09-18120.63.7763.70.233.54
2008-09-19125.043.7484.20.993.78
Rows × columns
5 × 6
Period covered
to
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 SPY closes and Treasury yields, September 15-19, 2008: the whipsaw week, derived from the stored result.
ColumnTypeRangeNotes
session date 2008-09-15 to 2008-09-19
close_usd number 116.3 to 125.04 US dollars
change_pct number -4.6 to 3.7 percent
shares_m number 465.5 to 763.7 count
tbill_3m_pct number 0.03 to 1.02 percent
y10_pct number 3.41 to 3.78 percent

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
SELECT
    toString(et_date) AS session,
    close_usd,
    round(if(prev_close = 0, NULL, (close_usd / prev_close - 1) * 100), 1) AS change_pct,
    shares_m,
    tbill_3m_pct,
    y10_pct
FROM (
    SELECT et_date, close_usd, shares_m,
           lagInFrame(close_usd) OVER (ORDER BY et_date ASC ROWS BETWEEN 1 PRECEDING AND CURRENT ROW) AS prev_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,
            round(toFloat64(sum(volume)) / 1e6, 1) AS shares_m
        FROM global_markets.delayed_stocks_minute_aggs
        WHERE ticker = 'SPY'
          AND window_start >= toDateTime('2008-09-12 00:00:00') AND window_start < toDateTime('2008-09-19 23:59:00')
        GROUP BY et_date
    )
) s
LEFT JOIN (
    SELECT date, round(toFloat64(yield_3_month), 2) AS tbill_3m_pct, round(toFloat64(yield_10_year), 2) AS y10_pct
    FROM global_markets.treasury_yields
    WHERE date BETWEEN '2008-09-15' AND '2008-09-19'
) t ON s.et_date = t.date
WHERE et_date >= toDate('2008-09-15') AND et_date <= toDate('2008-09-19')
ORDER BY et_date

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