Deposit on a $10,000 position: Reg T stock margin versus the security futures floor
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 2026-09-12, from Single Stock Futures: CME's New Contracts.
| regime | margin_pct | deposit_usd | leverage_x |
|---|---|---|---|
| Reg T initial | 50 | 5000 | 2 |
| Reg T maintenance | 25 | 2500 | 4 |
| OneChicago era floor | 20 | 2000 | 5 |
| CME security futures floor | 15 | 1500 | 6.7 |
- Rows × columns
- 4 × 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 |
|---|---|---|---|
regime |
text | 4 distinct values | |
margin_pct |
number | 15 to 50 | percent |
deposit_usd |
number | 1,500 to 5,000 | US dollars |
leverage_x |
number | 2 to 6.7 |
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
regime,
margin_pct,
round(10000 * margin_pct / 100, 0) AS deposit_usd,
round(100 / margin_pct, 1) AS leverage_x
FROM (
SELECT 'Reg T initial' AS regime, 50 AS margin_pct
UNION ALL SELECT 'Reg T maintenance', 25
UNION ALL SELECT 'OneChicago era floor', 20
UNION ALL SELECT 'CME security futures floor', 15
)
ORDER BY margin_pct DESC