Platform routing, fees, and server-side stops

Choosing a firm and a platform

A brokerage firm and a platform are chosen together. Not every firm offers every platform, and brokers and exchanges, not the software, set margin policy.

Most futures brokerages provide at least one no-cost order-entry application. Some complimentary platforms include streaming futures and options quotes plus charting.

Paid platforms are marketed for low-latency execution, point-and-click entry, automation, and custom indicators. Price data may have to be purchased separately from the software.

Where a stop-loss is held

In this archive, order routing is the choice of where working instructions live, on the local workstation or an offsite server, and how multi-price entries and exits are sent after a fill.

Some platforms can accept multiple entry prices on a multi-contract order. Once filled, they can place multiple exits and trail a stop-loss. Those follow-on instructions are contingency orders: each is sent, amended, or canceled only after a specified price or signal event occurs.

A stop-loss is a contingent exit that can be placed or trailed after a fill. It remains reliable only while its host keeps the instruction working.

Contingency orders depend on software to fire or cancel them. Instructions held only on the trader's computer can stop if that computer disconnects or crashes. A server-side arrangement, in which the platform host rather than the trader's computer holds and works the contingent instructions, keeps them working after a local outage.

Monthly subscription versus per-side fees

Platform access may be billed as a monthly subscription or as a per-side usage fee on each execution. A round turn is a complete trade counted as two sides, one entry execution and one exit execution, so a per-side fee is charged on both entry and exit.

In this archive, commission analysis compares a monthly platform subscription with a per-side usage fee, including any brokerage subsidy and the two-sided cost of a round turn.

Per-side platform fees cited in the evidence ranged from $1.50 to $0.15. A charge of $0.15 per side equals $0.30 per round turn and $300 at 1,000 round turns in a month.

Brokerages often subsidize platform costs at the low end of that fee range. Higher charges are more often tied to automated-system development tools or to claimed faster server communication.

Per-side fees scale with activity, so a large monthly volume can exceed a flat subscription in the same price band. A low-volume account is billed only for the executions it generates.