United Kingdom GDP YoY

The tests show no consistent, material advantage over the no-change baseline.

Model: Agentic Investor TSFM (foundation model)

Accuracy vs naive

+13%Beats the no-change baseline over 8 tests (8 tests, 4 won)

Direction

72%No clear edge over a coin flip (23 of 32 calls right in 8 tests)

Turning points

3 of 9Anticipated some turns (9 turns in 8 tests, 0 without a turn)

Error vs baseline

13% lowerError ratio 0.87; 1.00 is a tie.

Tests won

4 / 8Complete rolling backtests; ties count as no win.

Test period

2018-12-01 to 2026-09-014 observations ahead per test.

80% band coverage

84%Observed outcomes inside the band across all stored test windows.

• Band coverage uses all stored test windows, including model-selection windows when present; it does not determine the confidence label.
• Evaluated 2026-11-14 against the cached history through 2026-09-01.
• This is an evaluation of the serving model; it does not establish a winner across four model classes.