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Volume & money flow · daily rule · Semiconductors

Money Flow Index on KLA

What the play says

Out since Sep 24, 2025at $106.29KLAC since then +73.1%

Latest reading: MFI 41.78

Next move

No single daily close can flip this call, not even one as low as $46.00 or as high as $736.00. 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

KLAC with the play, last two years

KLACPlay 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 $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 KLAC over exactly the same dates, after costs.

Play, since 2005Hold, since 2005Play, 5 yrsHold, 5 yrs
Annual return+4.4%+22.2%+23.1%+43.5%
Total return+157%+7,649%+182%+503%
Worst drawdown−66.9%−75.2%−33.5%−44.5%
Volatility20.4%38.6%22.7%46.6%
Sharpe ratio0.230.670.860.93
Time invested27%100%
Switches per year1.60

Every call, graded

Right on 20 of 36 closed calls (56%). In calls averaged +6.3%; out calls saw KLAC move +25.8% on average.

CalledCallPriceUntilKLAC movedResult
Sep 24, 2025OUT$106.29now+73.1%open
Nov 1, 2024IN$65.94Sep 24, 2025+61.2%✓ right
Nov 24, 2023OUT$54.41Nov 1, 2024+21.2%✕ wrong
Oct 4, 2023IN$45.02Nov 24, 2023+20.8%✓ right
Nov 9, 2022OUT$32.54Oct 4, 2023+38.4%✕ wrong
Jun 21, 2022IN$31.44Nov 9, 2022+3.5%✓ right
Nov 10, 2021OUT$38.52Jun 21, 2022−18.4%✓ right
Oct 15, 2021IN$31.35Nov 10, 2021+22.9%✓ right
Sep 20, 2021OUT$33.83Oct 15, 2021−7.3%✓ right
Jul 21, 2021IN$30.09Sep 20, 2021+12.4%✓ right
Feb 27, 2019OUT$10.47Jul 21, 2021+187.3%✕ wrong
Jun 29, 2018IN$9.14Feb 27, 2019+14.5%✓ 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 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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