Screening futures by liquidity, open interest, and equal-dollar size

Screen the contract before it reaches the blotter

A liquidity filter is a pre-trade screen that ranks listed futures by how easily an order can be entered and exited. It uses depth, activity, and cost inputs rather than a directional forecast. Open interest analysis supplies the outstanding contract count as a depth input, so a market with more open positions ranks as easier to transact, all else equal.

Futures contract selection then chooses which listed market to trade by comparing liquidity, margin efficiency, and how many contracts are needed for the same dollar exposure.

How relative contract liquidity is built

A listed-futures liquidity rank can be built by multiplying contract point value, a three-year maximum price-motion estimate, open interest, and a volume adjustment that is typically between 1 and 4. Relative contract liquidity is the comparative score that multiplies an equal-profit contract count by total open interest and a volume factor, so markets can be ordered from easiest to hardest to trade.

The volume factor is an activity adjustment, typically running from 1 to 4, that down-weights thin volume and up-weights very heavy volume in the liquidity rank. In this workflow it is defined as the greater of 1 or exp(ln(volume)/ln(5000) - 2).

Equal-dollar size and effective percent margin

An equal-dollar-profit count scales each market by contract value times the largest price change observed over three years, so every entry in that column represents the same dollar potential. Contracts to trade for equal dollar profit is how many contracts of one market must be traded to match another market's dollar profit potential after that scaling.

Effective percent margin equals the margin dollar amount divided by the three-year dollar price range of the contract, then multiplied by one hundred. That percentage lets margin outlay be compared across markets.

Read the columns as a comparison

The liquidity columns are proportional comparisons only. A figure is meaningful against other markets in the same column, with the top of the rank easier to buy and sell and the bottom the most difficult.

Contracts marked with one activity indicator or none are treated as thinly traded and therefore less suitable for speculative participation. In the accompanying rank, short-term interest-rate futures occupy the highest relative-liquidity positions, while many currency, metal, and agricultural contracts occupy the lowest.

For listed shares, period volume divided by shares outstanding is treated as a turnover-rate proxy for trading liquidity.