How the Parabolic SAR Works
The parabolic sar is one of the most widely-used signals in trading. It’s simple, mechanical, and removes emotional decision-making from your trading by generating clear entry and exit signals based on the SAR indicator.
On BTC, the SAR acts as a trend filter. It won’t catch every exact bottom, but it reliably captures the meat of major moves while keeping you out of chop.
5-Year Performance on BTC
Over five years (2021-07-05 → 2026-07-03), the Parabolic SAR delivered a -17.8% total return on BTC-USD, compounding at -3.9% annually.
At 0.02, the SAR earned less than one units of return for every unit of risk taken. For context, anything above 1.0 is considered good; above 1.5 is excellent.
The catch? A 61.7% max drawdown. At some point during this 5-year run, you’d have been down nearly 62% from peak equity. That’s stomach-churning territory for most traders. If you can’t handle that kind of drawdown, this isn’t for you — or you need to size down.
Risk Assessment
| Metric | Value | Verdict |
|---|---|---|
| Sharpe Ratio | 0.02 | ❌ Weak |
| Max Drawdown | 61.7% | ⚠️ Significant |
| Win Rate | 33.3% | ❌ Low — relies on outsized wins |
| Profit Factor | 0.93 | ❌ Unprofitable |
| Trades/Year | ~75 total | Active |
The profit factor of 0.93 tells the real story: when the SAR fires, the winning signals don’t outweigh the losers. Combined with a 33.3% win rate, this requires careful position sizing to be profitable.
Does the Parabolic SAR Work on BTC?
The parabolic sar struggled to generate meaningful edge on BTC over this 5-year period. With a 0.02 Sharpe ratio and 0.93 profit factor, the risk-adjusted returns are below what most systematic traders would consider acceptable.
This doesn’t mean the SAR is useless — it may work better on different assets, timeframes, or when combined with other filters. But on BTC with default parameters over 5 years, it didn’t produce a compelling standalone edge.
Our take: skip it on BTC unless you’re combining it with other confirmations or using it on different timeframes.
Data source: Yahoo Finance (yfinance). Backtest engine: backtrader. 95% position sizing. 0.1% commission per trade. Last refreshed: July 04, 2026. Not financial advice. Past performance does not guarantee future results.
Year-by-Year Breakdown
| Year | Return | Trades | Win Rate |
|---|---|---|---|
| 2021 | +37.2% | 8 | 33.3% |
| 2022 | -65.3% | 14 | 33.3% |
| 2023 | +154.2% | 16 | 33.3% |
| 2024 | +111.5% | 16 | 33.3% |
| 2025 | -7.3% | 14 | 33.3% |
| 2026 | -30.0% | 7 | 33.3% |
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