Bounce off the lower Bollinger band does not beat buy-and-hold on FTNT: -28.0 points a year over 17 years.
Findings derived from the full panel. Each carries its number and its denominator; the computations are reproducible with artifact 30497848a621.
Close crosses back above the lower band (20, 2σ) after piercing it → entry. Close reaches the 20-day mean → exit.
The verdict compares the strategy with buying and holding FTNT 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 FTNT → · Full page for Bounce off the lower Bollinger band →
Finaxion Research (2026). Does Bounce off the lower Bollinger band work on FTNT?. Daily backtest 1962-01-01–2026-08-31, artifact 30497848a621. https://finaxion.app/en/research/bollinger-bounce/ftnt
Not a recommendation. Past performance does not guarantee future results.