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Volume & money flow · daily rule · Metals & mining

Money Flow Index on First Majestic Silver

What the play says

Out since Aug 24, 2026at C$28.88AG since then −19.6%

Latest reading: MFI 37.77

Next move

No single daily close can flip this call, not even one as low as C$5.80 or as high as C$92.88. 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

AG with the play, last two years

AGPlay 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 AG over exactly the same dates, after costs.

Play, since 2005Hold, since 2005Play, 5 yrsHold, 5 yrs
Annual return−0.6%+12.3%−1.5%+9.2%
Total return−12%+1,141%−7%+55%
Worst drawdown−82.7%−86.6%−60.7%−67.8%
Volatility37.9%62.5%42.4%60.6%
Sharpe ratio0.130.470.090.39
Time invested35%100%
Switches per year1.70

Every call, graded

Right on 19 of 36 closed calls (53%). In calls averaged +1.5%; out calls saw AG move +44.6% on average.

CalledCallPriceUntilAG movedResult
Aug 24, 2026OUTC$28.88now−19.6%open
Mar 25, 2026INC$28.72Aug 24, 2026+0.6%✓ right
Oct 23, 2024OUTC$10.72Mar 25, 2026+167.9%✕ wrong
Jun 12, 2024INC$8.45Oct 23, 2024+26.9%✓ right
Mar 22, 2024OUTC$7.22Jun 12, 2024+17.0%✕ wrong
Jan 22, 2024INC$6.53Mar 22, 2024+10.6%✓ right
Jul 21, 2023OUTC$8.94Jan 22, 2024−26.9%✓ right
Jul 9, 2021INC$17.90Jul 21, 2023−50.1%✕ wrong
Jun 26, 2019OUTC$10.14Jul 9, 2021+76.6%✕ wrong
Jan 25, 2019INC$7.22Jun 26, 2019+40.4%✓ right
Dec 19, 2018OUTC$6.95Jan 25, 2019+3.8%✕ wrong
Jul 24, 2018INC$8.48Dec 19, 2018−18.0%✕ 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 37 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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