Parabolic SAR: follow the dots does not beat buy-and-hold on WDAY: -6.3 points a year over 14 years.
Findings derived from the full panel. Each carries its number and its denominator; the computations are reproducible with artifact 566419a0cec8.
Long while the close is above the SAR (0.02, 0.02, 0.2); exit when the close drops below the SAR.
The verdict compares the strategy with buying and holding WDAY over the same window, with round-trip costs per asset class. “Out of sample” is walk-forward: the rule is fit on one stretch and judged on the next. A result that beats in the full sample but not out of it is overfit. Full methodology in the protocol. How we test.
Open this backtest with its trades Trades (CSV)
Every strategy on WDAY → · Full page for Parabolic SAR: follow the dots →
Finaxion Research (2026). Does Parabolic SAR: follow the dots work on WDAY?. Daily backtest 1962-01-01–2026-08-31, artifact 566419a0cec8. https://finaxion.app/en/research/parabolic-sar/wday
Not a recommendation. Past performance does not guarantee future results.