Reported short sale volume as a share of total volume, past six months
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 2026-10-09, from Limited Margin in an IRA: Rules and Limits.
| ticker | short_share_pct | busiest_day_pct |
|---|---|---|
| SPY | 54.2 | 76.2 |
| AAPL | 46.5 | 63.3 |
| KO | 43.2 | 65.6 |
| NVDA | 38.7 | 57.4 |
| MSFT | 36.8 | 61.4 |
- Rows × columns
- 5 × 3
- Computed
- Completeness
- No missing values
- Source
- US exchange, SIP and OPRA market data
- Licence
- Strasmore terms · free, no signup
What each column holds
| Column | Type | Range | Notes |
|---|---|---|---|
ticker |
text | 5 distinct values (AAPL, KO, MSFT…) | |
short_share_pct |
number | 36.8 to 54.2 | percent |
busiest_day_pct |
number | 57.4 to 76.2 | 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.
Run it yourself
This is the exact query behind the result above. Change a ticker, a date or a column and run it against the warehouse — no account, no key. The no-signup tier is smaller than the one this page was computed on; a query that reaches past it comes back saying which plan runs it.
WITH daily AS
(
SELECT
date,
ticker,
max(toFloat64(short_volume)) AS short_vol,
max(toFloat64(total_volume)) AS total_vol
FROM global_markets.stocks_short_volume
WHERE ticker IN ('AAPL', 'MSFT', 'NVDA', 'SPY', 'KO')
AND ticker NOT IN ('SPCX')
AND date >= today() - 180
GROUP BY date, ticker
HAVING max(toFloat64(total_volume)) > 0
)
SELECT
ticker,
round(100 * sum(short_vol) / sum(total_vol), 1) AS short_share_pct,
round(100 * max(short_vol / total_vol), 1) AS busiest_day_pct
FROM daily
GROUP BY ticker
ORDER BY short_share_pct DESC
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