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Volume & money flow · daily rule · Energy & power

Money Flow Index on ATCO

What the play says

Out since Oct 27, 2025at C$51.78ACO.X since then +49.9%

Latest reading: MFI 53.34

Next move

No single daily close can flip this call, not even one as low as C$19.40 or as high as C$310.44. 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

ACO.X with the play, last two years

ACO.XPlay 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 ACO.X over exactly the same dates, after costs.

Play, since 2005Hold, since 2005Play, 5 yrsHold, 5 yrs
Annual return+6.7%+11.2%+9.6%+18.5%
Total return+306%+897%+58%+133%
Worst drawdown−33.4%−48.3%−24.4%−26.8%
Volatility16.0%23.0%10.4%16.9%
Sharpe ratio0.370.500.570.86
Time invested43%100%
Switches per year1.90

Every call, graded

Right on 26 of 42 closed calls (62%). In calls averaged +6.5%; out calls saw ACO.X move +4.5% on average.

CalledCallPriceUntilACO.X movedResult
Oct 27, 2025OUTC$51.78now+49.9%open
Jul 8, 2025INC$48.14Oct 27, 2025+7.6%✓ right
Aug 8, 2024OUTC$39.92Jul 8, 2025+20.6%✕ wrong
Jun 24, 2024INC$35.87Aug 8, 2024+11.3%✓ right
May 14, 2024OUTC$36.86Jun 24, 2024−2.7%✓ right
Apr 18, 2024INC$32.92May 14, 2024+12.0%✓ right
Nov 17, 2023OUTC$33.95Apr 18, 2024−3.1%✓ right
Oct 3, 2022INC$36.21Nov 17, 2023−6.2%✕ wrong
Apr 14, 2022OUTC$37.56Oct 3, 2022−3.6%✓ right
Jul 9, 2021INC$35.52Apr 14, 2022+5.7%✓ right
Mar 22, 2021OUTC$32.78Jul 9, 2021+8.4%✕ wrong
Jan 6, 2021INC$28.70Mar 22, 2021+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 43 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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