Oct 14 close Sign in

Volume & money flow · daily rule · Industrials & materials

Money Flow Index on Rocket Lab

What the play says

In since Sep 3, 2026at $63.81RKLB since then +0.6%

Latest reading: MFI 43.35

Next move

No single daily close can flip this call, not even one as low as $16.05 or as high as $256.88. 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

RKLB with the play, last two years

RKLBPlay 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 2020

Money Flow IndexBuy & hold

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

The record

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

Play, since 2020Hold, since 2020Play, 5 yrsHold, 5 yrs
Annual return+27.3%+37.1%+14.9%+37.3%
Total return+305%+523%+100%+385%
Worst drawdown−69.1%−83.0%−67.5%−78.3%
Volatility47.0%78.9%46.3%78.7%
Sharpe ratio0.670.740.450.74
Time invested39%100%
Switches per year2.60

Every call, graded

Right on 10 of 15 closed calls (67%). In calls averaged +32.3%; out calls saw RKLB move +19.0% on average.

CalledCallPriceUntilRKLB movedResult
Sep 3, 2026IN$63.81now+0.6%open
Jul 11, 2025OUT$39.03Sep 3, 2026+63.5%✕ wrong
Mar 11, 2025IN$17.83Jul 11, 2025+118.9%✓ right
Aug 20, 2024OUT$6.65Mar 11, 2025+168.1%✕ wrong
Oct 5, 2023IN$4.45Aug 20, 2024+49.4%✓ right
Jan 19, 2023OUT$4.79Oct 5, 2023−7.1%✓ right
Dec 23, 2022IN$3.77Jan 19, 2023+27.1%✓ right
Nov 2, 2022OUT$4.89Dec 23, 2022−22.9%✓ right
Sep 7, 2022IN$5.59Nov 2, 2022−12.5%✕ wrong
Aug 5, 2022OUT$5.34Sep 7, 2022+4.7%✕ wrong
Jan 7, 2022IN$10.86Aug 5, 2022−50.8%✕ wrong
Sep 10, 2021OUT$18.69Jan 7, 2022−41.9%✓ 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 16 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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