How often do evaluation terms change, and why does that matter?

Evaluation terms in this category are not fixed reference data; they are commercial settings that firms revise on their own schedule. The variables that move include the entry fee, the loss limits and the method by which they are calculated, the profit split, the interval and processing conditions for withdrawal requests, minimum activity requirements, consistency rules, and restrictions on holding positions through news events or over weekends. Some revisions are announced. Others appear only as an edited rules page or an updated version of the terms document, with no notice to holders of active accounts. Whether a change reaches an account already in progress depends on the agreement: some documents fix the ruleset in force at the moment of purchase for the life of that account, while others reserve a general right to amend terms applying to all accounts, including live ones.

This is why a comparison is a snapshot rather than a fact. A figure without a capture date carries no information about whether it is current, because the reader cannot tell whether it was recorded before or after the most recent revision. The same undated figure may be accurate, superseded, or never have applied to the account size shown. Discrepancies between a firm's own published terms and a third-party listing are common, and they also occur inside a single firm's own material, where a marketing page and the binding terms document are maintained separately and drift apart.

Three things determine whether a listed figure is usable: the date it was captured, whether the firm's binding terms agree with the summary being read, and what the amendment clause says about accounts already open. The last is the one most often overlooked, since the purchase is frequently assumed to freeze the ruleset.

A history of a firm's terms carries more information than a current reading. It shows how often that firm revises, in which direction, whether revisions have been applied retroactively, and whether fee changes tend to move together with rule changes. Frequency of revision is itself a characteristic of the firm, and it is only visible across successive readings.