2020issue C1058
Filter futures by range-scaled liquidity and open interest
A futures liquidity rank scales each listed market to a comparable dollar move, then multiplies that size by open interest and a volume factor. Names with one liquidity mark or none are treated as having little activity.
- An equal-dollar contract count scales every listed future to a comparable three-year dollar move before any liquidity rank is formed.
- Relative contract liquidity multiplies that scaled count by open interest and a volume factor, then orders markets from easiest to hardest to buy and sell.
- Markets shown with one liquidity mark or none are treated as having little activity on this ranking.
- Effective percent margin expresses initial margin dollars as a percentage of the contract’s own three-year dollar price range.
Put listed futures on an equal-dollar scale
The archive workflow starts by putting every listed future on an equal-dollar footing. An equal-dollar contract count is defined as tick dollar value times the three-year maximum price excursion, so each listed market is scaled to a comparable dollar move.
That scaled size is contracts to trade: the number of contracts needed so one market’s multi-year maximum dollar excursion matches another’s, making listed names comparable on an equal-dollar basis. In the 2020 listing, some equity-index contracts needed 1 or 2 contracts for the equal-dollar scale while canola needed 114, so the same dollar excursion implies very different order size across names.
Form a relative liquidity rank
A futures liquidity rank can be formed by multiplying contract point value, a three-year maximum price motion, open interest, and a volume adjustment usually set between 1 and 4. Relative contract liquidity is the equal-dollar contract count times total open interest times a volume factor, ordered from easiest to hardest to buy and sell.
Open interest enters as the stock of outstanding futures positions used as a capacity input. The volume factor is a multiplier applied so unusually thin or heavy volume does not dominate the comparison. It is the greater of 1 and the exponential of the natural log of volume divided by the natural log of 5000, minus 2.
Treat thin ranks as inactive
Markets shown with one liquidity mark or none are treated as having little activity on this ranking. The liquidity filter is the execution screen that discards contracts too inactive to absorb a planned, range-scaled size.
Measure margin against the three-year range
Effective percent margin equals margin dollars divided by the three-year dollar price range of the contract, then multiplied by one hundred. It expresses initial margin dollars as a percentage of that three-year dollar price range, so capital locked can be compared per unit of historical range.
Posted margin versus three-year-range effective margin

Effective percent margin is margin value divided by the three-year price range of contract dollar value, times 100. Posted percent margin is margin relative to contract value. Relative-liquidity dots on the same table are a visual index, not a stated numeric series, so they are omitted.
A turnover proxy for listed shares
For listed shares, period volume as a percentage of shares outstanding is offered as a turnover-rate proxy for trading liquidity.
All readings on this track · 51 readings
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