Volume & money flow · daily rule · Consumer & retail
Money Flow Index on Booking Holdings
BKNG with the play, last two years
Shading shows the play's call from the close that triggered it.
Money Flow Index (14)
Dashed lines at 20, 80.
Growth of $10,000 since 2005
Log scale. After trading costs, with T-bill interest while out.
The record
The play against buying and holding BKNG over exactly the same dates, after costs.
| Play, since 2005 | Hold, since 2005 | Play, 5 yrs | Hold, 5 yrs | |
|---|---|---|---|---|
| Annual return | +5.9% | +26.6% | −1.3% | +10.4% |
| Total return | +246% | +16,887% | −6% | +64% |
| Worst drawdown | −42.1% | −66.3% | −38.1% | −39.5% |
| Volatility | 21.4% | 38.0% | 23.2% | 33.2% |
| Sharpe ratio | 0.29 | 0.76 | −0.10 | 0.35 |
| Time invested | 28% | 100% | ||
| Switches per year | 1.5 | 0 |
Every call, graded
Right on 23 of 33 closed calls (70%). In calls averaged +7.1%; out calls saw BKNG move +120.6% on average.
| Called | Call | Price | Until | BKNG moved | Result |
|---|---|---|---|---|---|
| Feb 11, 2026 | IN | $171.26 | now | −8.0% | open |
| Aug 26, 2024 | OUT | $149.12 | Feb 11, 2026 | +14.8% | ✕ wrong |
| Aug 9, 2024 | IN | $135.19 | Aug 26, 2024 | +10.3% | ✓ right |
| Aug 4, 2022 | OUT | $76.09 | Aug 9, 2024 | +77.7% | ✕ wrong |
| Jun 24, 2021 | IN | $87.77 | Aug 4, 2022 | −13.3% | ✕ wrong |
| Feb 25, 2021 | OUT | $88.82 | Jun 24, 2021 | −1.2% | ✓ right |
| Sep 28, 2020 | IN | $66.44 | Feb 25, 2021 | +33.7% | ✓ right |
| Sep 4, 2020 | OUT | $74.93 | Sep 28, 2020 | −11.3% | ✓ right |
| Feb 3, 2020 | IN | $71.86 | Sep 4, 2020 | +4.3% | ✓ right |
| Apr 22, 2019 | OUT | $72.06 | Feb 3, 2020 | −0.3% | ✓ right |
| Dec 26, 2018 | IN | $66.55 | Apr 22, 2019 | +8.3% | ✓ right |
| Nov 30, 2017 | OUT | $67.98 | Dec 26, 2018 | −2.1% | ✓ right |
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 34 calls shown.
How the play works
- In when the 14-day MFI crosses up through 20.
- Out when it crosses down through 80.
The creators also stress divergences, which this rule ignores.
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.