Mean reversion · daily rule · Real estate
Bollinger Reversion on Vital Infrastructure Property Trust
What the play says
VITL.UN with the play, last two years
Shading shows the play's call from the close that triggered it.
Growth of C$10,000 since 2010
Log scale. After trading costs, with T-bill interest while out.
The record
The play against buying and holding VITL.UN over exactly the same dates, after costs.
| Play, since 2010 | Hold, since 2010 | Play, 5 yrs | Hold, 5 yrs | |
|---|---|---|---|---|
| Annual return | +0.4% | +2.9% | −5.8% | −11.2% |
| Total return | +7% | +61% | −26% | −45% |
| Worst drawdown | −49.3% | −68.6% | −49.3% | −68.6% |
| Volatility | 14.4% | 22.0% | 17.3% | 26.3% |
| Sharpe ratio | −0.01 | 0.17 | −0.47 | −0.46 |
| Time invested | 22% | 100% | ||
| Switches per year | 8.8 | 0 |
Every call, graded
Right on 89 of 145 closed calls (61%). In calls averaged +0.1%; out calls saw VITL.UN move +0.8% on average.
| Called | Call | Price | Until | VITL.UN moved | Result |
|---|---|---|---|---|---|
| Oct 13, 2026 | IN | C$5.10 | now | 0.0% | open |
| Sep 17, 2026 | OUT | C$5.25 | Oct 13, 2026 | −2.9% | ✓ right |
| Aug 10, 2026 | IN | C$5.29 | Sep 17, 2026 | −0.7% | ✕ wrong |
| Jun 22, 2026 | OUT | C$5.22 | Aug 10, 2026 | +1.3% | ✕ wrong |
| Jun 19, 2026 | IN | C$5.12 | Jun 22, 2026 | +2.1% | ✓ right |
| Jun 9, 2026 | OUT | C$5.23 | Jun 19, 2026 | −2.2% | ✓ right |
| May 14, 2026 | IN | C$5.25 | Jun 9, 2026 | −0.4% | ✕ wrong |
| Apr 2, 2026 | OUT | C$5.25 | May 14, 2026 | 0.0% | ✓ right |
| Mar 12, 2026 | IN | C$5.34 | Apr 2, 2026 | −1.6% | ✕ wrong |
| Oct 23, 2025 | OUT | C$4.88 | Mar 12, 2026 | +9.3% | ✕ wrong |
| Oct 8, 2025 | IN | C$4.69 | Oct 23, 2025 | +4.2% | ✓ right |
| Aug 15, 2025 | OUT | C$4.46 | Oct 8, 2025 | +5.2% | ✕ wrong |
An in call is right when the price rose before the next call; an out call is right when it fell. The latest 12 of 146 calls shown.
How the play works
- In on a close below the lower band (20-day average − 2 standard deviations).
- Out on a close above the 20-day average.
This runs against Bollinger's advice that tags of the bands are not signals. It is shown because so many traders use it.
The case against
Valeriy Zakamulin tested moving-average timing on up to 155 years of U.S. stock data and found no statistically significant edge in the second half of that record. The rules earned their keep in a few severe bear markets and lagged buy and hold for long stretches in between.