Rotation Factor

What is the Rotation Factor?

The rotation factor is a day-timeframe statistic from Market Profile, the auction framework J. Peter Steidlmayer developed at the Chicago Board of Trade. It scores how each intraday period rotated against the one before it. In the common construction, every TPO bracket (usually 30 minutes) is compared with the prior bracket: a higher high scores +1 and a lower high -1, a higher low scores +1 and a lower low -1, and unchanged extremes score 0. Each bracket therefore contributes between -2 and +2, and the session total is the day's rotation factor.

The count quantifies attempted direction: a strongly positive total says buyers controlled most of the period-by-period auctions, a strongly negative one says sellers did, and a total near zero reads as balance. Because it only tallies attempts, profile traders judge it against what price actually achieved on the TPO profile: persistent positive rotations with no upward progress are a classic effort vs result warning that responsive sellers are absorbing.

How traders use it

• As a control gauge for the session: a count that builds steadily in one direction supports trading with the rotations, while a mixed reading near zero argues for two-sided, rotational tactics rather than trend-following.
• As a confirmation filter: strong rotation plus actual range extension supports continuation ideas, whereas strong rotation without range extension hints the attempted direction is being absorbed and may fail.
• As a divergence tell against price: when the rotation factor and the direction of value disagree, many profile traders stand aside or lean responsive, since the count guarantees nothing about follow-through.