FINAXIONResearch
Finaxion Research · Bounce off the lower Bollinger band · single stocks · Recomputed 2026-09-10

Does Bounce off the lower Bollinger band work on CIEN?

Bounce off the lower Bollinger band does not beat buy-and-hold on CIEN: -8.8 points a year over 30 years.

Total return
-78.2%
Buy and hold
195.6%
CAGR
-5.0%
Sharpe
-0.07
Max drawdown
-96.2%
Trades
238
Out of sample
overfit
Years
30
0.1×1×1998200120042007201020132016201920222025
StrategyCIEN

Findings

  1. Bounce off the lower Bollinger band does not beat buy-and-hold on CIEN: -8.8 points a year over 30 years.
  2. Against the S&P 500 over the same window: -14.9 points a year.
  3. Total return -78.2% versus +195.6% for buy-and-hold, with 238 trades.
  4. The result does not hold out of sample: it is overfit.
  5. Maximum drawdown -96.2%.
  6. It beat before 2011 and stopped afterwards.
  7. It ranks #222 of 235 markets for this strategy by annual excess over the S&P 500.

Findings derived from the full panel. Each carries its number and its denominator; the computations are reproducible with artifact 30497848a621.

Exactly what was tested

Close crosses back above the lower band (20, 2σ) after piercing it → entry. Close reaches the 20-day mean → exit.

How to read it

The verdict compares the strategy with buying and holding CIEN 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 CIEN → · Full page for Bounce off the lower Bollinger band →

How to cite

Finaxion Research (2026). Does Bounce off the lower Bollinger band work on CIEN?. Daily backtest 1962-01-01–2026-08-31, artifact 30497848a621. https://finaxion.app/en/research/bollinger-bounce/cien

Not a recommendation. Past performance does not guarantee future results.