Sigma-L - Market Cycles

Sigma-L - Market Cycles

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Sigma-L - Market Cycles
Sigma-L - Market Cycles
ΣL US Stock Market Composite - 23rd June 2025 | @ 181 Days
Stockmarkets

ΣL US Stock Market Composite - 23rd June 2025 | @ 181 Days

'C' class signal detected in ΣL US Stock Market Composite (SPY, QQQ, IWM). Average wavelength of 181 days over 13 iterations since March 2019. Currently peaking.

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David F
Jun 23, 2025
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Sigma-L - Market Cycles
Sigma-L - Market Cycles
ΣL US Stock Market Composite - 23rd June 2025 | @ 181 Days
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ΣL Cycle Summary

An interesting feature of US Stock Markets over the last year or so has been the emergence of power around 180 days, suggesting a periodic feature at that bandwidth is becoming dominant in price action. Gaining amplitude in early 2023, this wave has been on our radar for some time, after making the requisite number of iterations to avoid being fooled by randomness.

The current peak that is forming at the time of writing may well be crucial if the larger behemoth wave around 3.5 years is now pushing hard down. The trough of that wave is due late 2026 and this latest move up from April 2025, powered by the 40 week nominal wave, may well be the last hurrah prior to the path down. Keen readers will also note the exemplary 40 week nominal wave is still phased as hard up at the time of writing. If we see an early price peak here that is a good sign the long and more powerful behemoth wave is indeed exerting more influence on price action.

Time Frequency Analysis

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