Mean Reversion w/ Bollinger Bands

Script from: TradingViewLongTermMean reversionBotVolatility

The Mean Reversion w/ Bollinger Bands strategy triggers a buy when the price dips below the lower Bollinger Band and a sell when it exceeds the upper band. Optimized for the S&P 500, this approach generates buy opportunities in undervalued conditions, suitable for long-term investment portfolios. Its effectiveness was notable during the COVID-19 market drop, indicating its potential beyond day trading.

Audit verdict

ArchivedRemoved from TradingView

No longer on TradingView

We can't re-run or audit this script anymore. The backtests below were run while it was public and are no longer updated.

2,112backtestsarchived

50robust scoreranked median 52

0.15p-valueranked median 0.24

—repaint auditsource unavailable

Audit details

How we decide whether a strategy enters our rankings. Read the methodology →

–

Repainting audit

Not performed: the source code is no longer accessible.

–

Script availability

Removed from TradingView. You can't add it to a chart anymore.

✓

Statistical edge

Average t-statistic 2.79 (p = 0.15), above the median of 1.98 (p = 0.24) for ranked strategies.

Quality gate

None of the 108 backtests with more than 15 trades passes our quality gate.

Robust score

50/100, below the median of 52 for ranked strategies.

How its evidence compares

The t-statistic measures how far the average result sits from zero relative to its noise. Below about 2, it is within what random entries produce.

2.79

avg. t-statistic

1.98

median, ranked strategies

Best 5 of 2,112 backtests

Shown for transparency. Frozen results, no longer updated.

Symbol	Timeframe	Net profit	Profit factor	Trades	Max drawdown
Novavax, Inc. NASDAQ:NVAX	1D	+3,185%	1.29	632	91%
ServiceNow, Inc. NYSE:NOW	2H	+2,715%	3.09	1,066	50%
ServiceNow, Inc. NYSE:NOW	4H	+1,477%	4.48	536	41%
XRP / TetherUS BINANCE:XRPUSDT	1D	+391%	2.87	258	45%
ServiceNow, Inc. NYSE:NOW	1H	+309%	2.08	1,384	29%