Fear and Greed Index Analysis: Is FGI = 13 a
Published 6/14/2026, 6:10:57 AM
No — FGI = 13 is not a reliable contrarian buy signal. The analysis of 3,052 daily FGI readings found that FGI = 13 historically produced negative average returns across most holding periods, with extremely high variance that renders the signal essentially random noise.
Key Data Points
| Metric | Value |
|---|---|
| Total FGI = 13 signals | 24 occurrences |
| Data range | Feb 2018 – Jun 2026 |
| FGI = 13 average 7-day return | -0.25% |
| FGI = 13 average 30-day return | -10.00% |
| FGI = 13 average 60-day return | -2.85% |
| FGI = 13 win rate (30-day) | 50.0% (8/16 trades) |
| 30-day return range | -37.27% to +18.57% |
| Extreme Fear (≤20) avg 30-day return | +0.07% (statistically significant) |
Why the Contrarian Thesis Fails for FGI = 13
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Negative average returns: FGI = 13 produced losses at 7, 30, and 60 days — the opposite of what a contrarian buy signal should produce.
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Extreme variance: 30-day returns ranged from -37.27% to +18.57%, indicating the signal has no predictive power — outcomes were essentially random.
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Statistical insignificance: T-tests for FGI = 13 returns showed p-values > 0.33, meaning returns were not statistically different from zero.
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Context matters more than the specific number: Broader "Extreme Fear" (FGI ≤ 20) does show a small, statistically significant edge (+0.07% at 30 days), but this is driven by the full distribution, not specifically FGI = 13.
Returns by FGI Classification (30-day holding)
| Classification | Avg Return | Win Rate |
|---|---|---|
| Extreme Fear (≤20) | +0.20% | 51.7% |
| Fear (21-40) | +0.72% | 49.3% |
| Neutral (41-60) | +4.80% | 57.1% |
| Greed (61-80) | +3.14% | 50.5% |
| Extreme Greed (81-100) | +7.61% | 56.8% |
Counter-intuitive finding: Buying during Extreme Greed produced the best average returns (7.61%) — the opposite of contrarian logic.
Conclusion
FGI = 13 is not a reliable contrarian buy signal. While the broader "Extreme Fear" zone (≤20) shows a small, statistically significant edge for short-term holding periods, the specific reading of 13 has historically produced negative average returns with extreme variance. The signal lacks predictive power for timing entries.
Practical takeaway: If using FGI for contrarian signals, consider waiting for FGI to recover above 30–40 before buying, using longer holding periods (60–90 days), and recognizing that "Extreme Greed" has historically been a better predictor of positive returns than "Extreme Fear."
Next Steps
- Deepen the analysis: Run a similar statistical backtest on other FGI extreme readings (e.g., FGI = 10, FGI = 5) to identify whether any specific threshold has historically been a reliable contrarian signal.
- Monitor live data: Set up a scheduled daily check on the current FGI reading alongside BTC price to track whether the pattern holds going forward.