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Volume & money flow · daily rule · Financials

Money Flow Index on Sun Life Financial

What the play says

Out since Aug 28, 2024at C$67.02SLF since then +65.4%

Latest reading: MFI 47.77

Next move

No single daily close can flip this call, not even one as low as C$27.71 or as high as C$443.32. It needs the MFI to cross 20 or 80, which takes more than one day from here.

Next check: the Oct 14, 2026 close

See every reason, for and against, in the Theory tester

SLF with the play, last two years

SLFPlay inPlay out

Shading shows the play's call from the close that triggered it.

Money Flow Index (14)

MFI

Dashed lines at 20, 80.

Growth of C$10,000 since 2005

Money Flow IndexBuy & hold

Log scale. After trading costs, with T-bill interest while out.

The record

The play against buying and holding SLF over exactly the same dates, after costs.

Play, since 2005Hold, since 2005Play, 5 yrsHold, 5 yrs
Annual return+1.8%+9.0%+6.6%+15.0%
Total return+48%+550%+37%+100%
Worst drawdown−68.9%−71.5%−21.9%−24.5%
Volatility20.2%26.6%9.5%17.1%
Sharpe ratio0.100.390.320.68
Time invested29%100%
Switches per year1.40

Every call, graded

Right on 15 of 30 closed calls (50%). In calls averaged +1.5%; out calls saw SLF move +9.9% on average.

CalledCallPriceUntilSLF movedResult
Aug 28, 2024OUTC$67.02now+65.4%open
Aug 8, 2024INC$59.58Aug 28, 2024+12.5%✓ right
May 10, 2024OUTC$61.75Aug 8, 2024−3.5%✓ right
Apr 19, 2024INC$63.37May 10, 2024−2.5%✕ wrong
Sep 21, 2023OUTC$59.06Apr 19, 2024+7.3%✕ wrong
Aug 24, 2023INC$56.25Sep 21, 2023+5.0%✓ right
Apr 21, 2023OUTC$56.26Aug 24, 20230.0%✓ right
Mar 2, 2022INC$54.29Apr 21, 2023+3.6%✓ right
Aug 16, 2021OUTC$53.37Mar 2, 2022+1.7%✕ wrong
Jun 22, 2021INC$50.38Aug 16, 2021+5.9%✓ right
Mar 8, 2019OUTC$37.05Jun 22, 2021+36.0%✕ wrong
Dec 28, 2018INC$32.43Mar 8, 2019+14.2%✓ 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 31 calls shown.

How the play works

  1. In when the 14-day MFI crosses up through 20.
  2. 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.

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