The early-exercise census: every ITM call on every June 30 ex-dividend payer, tested on June 29
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 2026-07-17, from How Ex-Dividend Dates Affect Options.
- Rows × columns
- 1 × 4
- 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 |
|---|---|---|---|
underlyings_measured |
number | every row is 85 | |
itm_calls_measured |
number | every row is 613 | |
exercise_optimal |
number | every row is 184 | |
pct_optimal |
number | every row is 30 | 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 divs AS (
SELECT ticker, max(cash_amount) AS dividend
FROM global_markets.stocks_dividends
WHERE ex_dividend_date = toDate('2026-06-30') AND cash_amount > 0
GROUP BY ticker
)
SELECT count(DISTINCT g.underlying_symbol) AS underlyings_measured,
count() AS itm_calls_measured,
countIf(g.option_close - (g.underlying_close - g.strike_price) < d.dividend) AS exercise_optimal,
round(100.0 * countIf(g.option_close - (g.underlying_close - g.strike_price) < d.dividend) / count(), 1) AS pct_optimal
FROM global_markets.options_greeks g
INNER JOIN divs d ON g.underlying_symbol = d.ticker
WHERE g.date = toDate('2026-06-29')
AND g.option_type = 'C'
AND g.underlying_close - g.strike_price > 0
AND g.expiration_date > toDate('2026-06-30')
AND g.implied_volatility > 0.02 AND g.iv_converged
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