Ladder flip estimate by expiration window, one pinned June 2026 session
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 2026-09-23, from What Is the Gamma Flip Level?.
| dte_bucket | spot_close | flip_estimate |
|---|---|---|
| 0 to 1 days | 746.3 | 745 |
| 2 to 7 days | 746.3 | 744 |
| 8 to 30 days | 746.3 | 746 |
| 31 to 90 days | 746.3 | 745 |
- Rows × columns
- 4 × 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 |
|---|---|---|---|
dte_bucket |
text | 4 distinct values (0 to 1 days, 2 to 7 days, 31 to 90 days…) | |
spot_close |
number | every row is 746.3 | US dollars |
flip_estimate |
number | 744 to 746 |
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.
SELECT
dte_bucket,
round(any(spot), 2) AS spot_close,
round(argMax(strike, running), 2) AS flip_estimate
FROM
(
SELECT
dte_bucket,
bucket_order,
spot,
strike,
sum(net_gamma) OVER (PARTITION BY dte_bucket ORDER BY strike) AS running
FROM
(
SELECT
multiIf(days_to_expiry <= 1, '0 to 1 days',
days_to_expiry <= 7, '2 to 7 days',
days_to_expiry <= 30, '8 to 30 days',
'31 to 90 days') AS dte_bucket,
multiIf(days_to_expiry <= 1, 1,
days_to_expiry <= 7, 2,
days_to_expiry <= 30, 3, 4) AS bucket_order,
toFloat64(strike_price) AS strike,
any(toFloat64(underlying_close)) AS spot,
sum(multiIf(lower(substring(option_type, 1, 1)) = 'c', -1.0, 1.0)
* toFloat64(gamma) * volume * 100) AS net_gamma
FROM global_markets.options_greeks
WHERE underlying_symbol = 'SPY'
AND date = (
SELECT max(date)
FROM global_markets.options_greeks
WHERE underlying_symbol = 'SPY'
AND date <= '2026-06-30'
)
AND iv_converged = 1
AND volume > 0
AND days_to_expiry <= 90
AND abs(toFloat64(strike_price) / toFloat64(underlying_close) - 1) < 0.15
GROUP BY dte_bucket, bucket_order, strike
)
)
GROUP BY dte_bucket, bucket_order
ORDER BY bucket_order
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