leverage — 26 answered market questions

Deposit on a $10,000 position: Reg T stock margin versus the security futures floor

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Deposit on a $10,000 position: Reg T stock margin versus the security futures floor — 4 rows by 4 columns, computed 2026-09-12 from US exchange, SIP and OPRA data.
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

the exact SQL behind every number

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

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