Buys a deep dip after repeated closes below the lower Bollinger Band when several oversold readings line up. Sells when price crosses under the middle or upper band, with a 3.5% stop loss.
Best run of 24. Silver, 30 min, spread 2, from run sweeps:2026-10-04-SILVER-30m-opt.tsv:26.
| Period | Up to 2026-10-04 |
| Instrument | Silver, 30 minutes |
| Spread | 2 points |
| Starting capital | 1,000,000 |
| Costs | Spread only. Commissions and overnight financing are not included. |
| Bars | Up to 200,000 bars, fewer where the instrument has less history |
| Last tested | 2026-10-04 |
Every run
| Market | Timeframe | PF | Trades | Win % | Net | Max DD |
|---|---|---|---|---|---|---|
| SilverBest run | 30 min | n/a | 12 | 50.00 | 2,799 USD | -1,866 |
| USD/JPY | 4 hours | n/a | 1 | 100.00 | 41,800 USD | -16,700 |
| USD/JPY | 1 hour | n/a | 2 | 100.00 | 33,300 USD | -14,350 |
| USD/JPY | 30 min | n/a | 1 | 100.00 | 16,000 USD | -3,850 |
| Nikkei 225 | 1 hour | n/a | 2 | 50.00 | 2,182 USD | -1,218 |
| Brent Crude | Daily | n/a | 8 | 62.50 | 2,090 EUR | -362 |
| Nikkei 225 | 15 min | n/a | 1 | 100.00 | 1,495 USD | -210 |
| Nasdaq 100 | 1 hour | n/a | 4 | 75.00 | 1,476 EUR | -440 |
| DAX 40 | Daily | n/a | 2 | 50.00 | 1,224 EUR | -625 |
| GBP/USD | 4 hours | n/a | 2 | 100.00 | 1,173 USD | -341 |
| Nasdaq 100 | 30 min | n/a | 3 | 100.00 | 1,027 EUR | -440 |
| Brent Crude | 5 min | n/a | 6 | 50.00 | 967 EUR | -637 |
| FTSE 100 | Daily | n/a | 3 | 66.67 | 920 EUR | -295 |
| US Crude Oil | Daily | n/a | 5 | 60.00 | 899 EUR | -601 |
| Nikkei 225 | Daily | n/a | 1 | 100.00 | 831 USD | -678 |
| Nikkei 225 | 30 min | n/a | 1 | 100.00 | 765 USD | -187 |
| Brent Crude | 3 min | n/a | 5 | 60.00 | 632 EUR | -377 |
| Brent Crude | 1 min | n/a | 2 | 100.00 | 362 EUR | -98.50 |
| DAX 40 | 15 min | n/a | 1 | 100.00 | 157 EUR | -69.50 |
| Dow Jones | 15 min | n/a | 1 | 100.00 | 151 EUR | -142 |
| Nasdaq 100 | 15 min | n/a | 1 | 100.00 | 108 EUR | -42.70 |
| Gold | 2 min | n/a | 1 | 100.00 | 104 EUR | -67.80 |
| FTSE 100 | 10 min | n/a | 1 | 100.00 | 83.50 EUR | -62.80 |
| S&P 500 | 15 min | n/a | 1 | 100.00 | 25.25 EUR | -14.50 |
Charts
Top 10 of 24 runs. The full list is in the table above.
The code
// ============================================================== // Band Break Oversold Pullback // ProRealAlgos Strategy Library | prorealalgos.com // Type: Mean reversion // Direction: Long only // Timeframe tested: 30 minutes // ============================================================== DEFPARAM CumulateOrders = false mid = Average[20](close) sd = STD[20](close) * SQRT(20 / 19) up = mid + 2 * sd myLow = mid - 2 * sd width = (up - myLow) / mid
81 more lines: the entry and exit rules.
Setup
Questions
Yes. The code is ProBuilder and runs as an automated ProOrder system. Backtest it on your own account with your own spread and position size before trading it live.
It was tested on 24 market and timeframe combinations. The best run by trade count was Silver, 30 minutes, with 12 trades.
The best run had a maximum drawdown of 1,866 USD at the tested position size, against a net result of 2,798 USD.
It only takes long trades.
Related
The ProRealAlgos community gets the full rules, the complete code and the automated portfolio.