Ranking futures liquidity before contract selection

A liquidity filter before the contract list

The archive workflow treats listed-futures choice as a liquidity filter. That screen ranks listed futures by how easily size can be bought or sold, using activity, volume, and cost inputs over the life of an order.

A listed-futures liquidity rank can be computed from contract point value, a three-year historical maximum price motion, open interest, and a volume adjustment. Markets are then ordered by relative contract liquidity, from easiest to hardest to transact.

How relative contract liquidity is built

Relative contract liquidity is defined as the equal-dollar-profit contract count times total open interest times a volume factor.

The equal-dollar-profit contract count equals tick dollar value times the three-year maximum price excursion, so every market in that column is scaled to the same dollar-profit potential. That figure is the contracts to trade: how many contracts of one market are needed to match another market’s three-year dollar-range profit potential.

The volume factor is a multiplier no lower than one that scales the liquidity rank from observed volume on a 5000-contract log scale. In the archive workflow it is the greater of 1 and the exponential of the natural log of volume divided by the natural log of 5000, minus 2.

Open interest analysis uses outstanding contract size as a filter so relative liquidity reflects how much existing interest can absorb a new order. Open interest is a required multiplier in the relative-liquidity product, so contract selection is filtered by outstanding size as well as by range and volume.

Effective percent margin beside the rank

Effective percent margin is initial margin dollars divided by the three-year dollar price range of the contract, expressed as a percentage. The archive computes it as margin dollars divided by that three-year dollar range, then multiplied by one hundred.

A mid-2019 ranking snapshot

In the mid-2019 snapshot, the June S&P 500 E-Mini led the relative-liquidity ranking, with a 4.7 percent margin, a 14.5 percent effective margin, and two contracts in the equal-dollar-profit column.

Contracts showing one activity mark or none are treated as thinly traded and less suitable for speculative execution.

From the liquidity screen to contract selection

For listed shares, trading liquidity is proxied by period volume as a percentage of shares outstanding, interpreted as a turnover rate.

Futures contract selection then chooses among listed underlyings and expiries after placing a single trade in a liquidity and margin-efficiency context.