STRASMORE/EXPLORE 2,170 QUERIES

Short-marked share of reported volume, 30 days either side of the mark

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 2026-08-06, from Do Stocks Fall When a Lockup Expires?.

as of ranking 6×3read in context →
Short-marked share of reported volume, 30 days either side of the mark — 6 rows by 3 columns, computed from US exchange, SIP and OPRA data.
tickershort_share_before_pctshort_share_after_pct
ALAB58.448.7
BIRK58.365.4
RBRK44.945.3
ARM43.743.5
RDDT42.435.9
CART37.728.9
Rows × columns
6 × 3
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 Short-marked share of reported volume, 30 days either side of the mark, derived from the stored result.
ColumnTypeRangeNotes
ticker text 6 distinct values (ALAB, ARM, BIRK…)
short_share_before_pct number 37.7 to 58.4 percent
short_share_after_pct number 28.9 to 65.4 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 
WITH multiIf(
        ticker = 'ARM',  toDate('2023-09-14'),
        ticker = 'CART', toDate('2023-09-19'),
        ticker = 'BIRK', toDate('2023-10-11'),
        ticker = 'ALAB', toDate('2024-03-20'),
        ticker = 'RDDT', toDate('2024-03-21'),
        ticker = 'RBRK', toDate('2024-04-25'),
        toDate('2024-01-01')) + 180 AS lockup_mark
SELECT
    ticker,
    round(100 * sumIf(short_vol, session_date <  lockup_mark)
              / sumIf(total_vol, session_date <  lockup_mark), 1) AS short_share_before_pct,
    round(100 * sumIf(short_vol, session_date >= lockup_mark)
              / sumIf(total_vol, session_date >= lockup_mark), 1) AS short_share_after_pct
FROM
(
    SELECT
        ticker,
        date                            AS session_date,
        toFloat64(max(short_volume))    AS short_vol,
        toFloat64(max(total_volume))    AS total_vol
    FROM global_markets.stocks_short_volume
    WHERE ticker IN ('ARM', 'CART', 'BIRK', 'ALAB', 'RDDT', 'RBRK')
      AND date >= toDate('2024-01-15')
      AND date <  toDate('2024-12-15')
    GROUP BY ticker, session_date
)
WHERE session_date >= lockup_mark - 30
  AND session_date <= lockup_mark + 30
GROUP BY ticker
HAVING sumIf(total_vol, session_date <  lockup_mark) > 0
   AND sumIf(total_vol, session_date >= lockup_mark) > 0
ORDER BY short_share_before_pct DESC

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