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Volume & money flow · daily rule · Metals & mining

Money Flow Index on Fortuna Mining

What the play says

Out since Aug 31, 2026at C$16.73FVI since then −9.9%

Latest reading: MFI 36.64

Next move

No single daily close can flip this call, not even one as low as C$3.77 or as high as C$60.28. 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

FVI with the play, last two years

FVIPlay 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 FVI over exactly the same dates, after costs.

Play, since 2005Hold, since 2005Play, 5 yrsHold, 5 yrs
Annual return+7.3%+18.9%+45.6%+21.9%
Total return+365%+4,206%+550%+168%
Worst drawdown−88.4%−89.2%−25.4%−56.6%
Volatility46.4%68.2%35.9%55.7%
Sharpe ratio0.320.551.120.57
Time invested39%100%
Switches per year2.30

Every call, graded

Right on 30 of 52 closed calls (58%). In calls averaged +9.4%; out calls saw FVI move +28.7% on average.

CalledCallPriceUntilFVI movedResult
Aug 31, 2026OUTC$16.73now−9.9%open
Mar 23, 2026INC$12.46Aug 31, 2026+34.3%✓ right
Aug 28, 2025OUTC$10.27Mar 23, 2026+21.3%✕ wrong
Jun 27, 2025INC$8.74Aug 28, 2025+17.5%✓ right
Feb 4, 2025OUTC$7.46Jun 27, 2025+17.2%✕ wrong
Jan 2, 2025INC$6.59Feb 4, 2025+13.2%✓ right
Mar 18, 2024OUTC$4.54Jan 2, 2025+45.2%✕ wrong
Feb 29, 2024INC$3.69Mar 18, 2024+23.0%✓ right
Nov 30, 2023OUTC$5.26Feb 29, 2024−29.8%✓ right
Aug 23, 2023INC$4.10Nov 30, 2023+28.3%✓ right
Apr 6, 2023OUTC$5.36Aug 23, 2023−23.5%✓ right
Jul 13, 2022INC$3.53Apr 6, 2023+51.8%✓ 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 53 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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