11.2 Common Cycles

Named cycles are still Classical Techniques on CMT Level I. Section 11.1 gave you the wave object. This section is common cycles: the named economic periods, the business/inventory story, the US presidential/election cycle, seasonal tools, and sequence / nonlinear language (Fibonacci time; 3-wave versus 5-wave as counting words only). The Level I job is recognition of named periods, not a forecast of the next trough. Independent OpenExamPrep material for these CMT Level I topics stays inside that job.

If a stem asks "which cycle is associated with about 7 to 11 years," the answer is Juglar, not a dated call that the next Juglar low is March 2028. Variation (11.1) already warned you that actual lengths flex. Summation already warned you that other waves add in. Treat every named clock as a label with a range, then stop.

Notable economic cycles and their periods

Economists named several inventory and investment waves. Technicians borrow the names as period labels. Memorize the range, the usual economic story, and the person's name. Do not memorize a trough date.

Worked recognition: "A 50-year technology-and-credit wave" is Kondratieff. "A 4-year inventory swing" is Kitchin. "An 18-year building boom" sits in the Kuznets band. "A 9-year capex cycle" is Juglar. Mixing Kuznets with Kondratieff because both are "long" is a common miss. Mixing Kitchin with the presidential cycle because both are "about four years" is the other common miss—one is an inventory story, the other is a political calendar.

These names are not Hurst's nominal ladder, though they live in the same neighborhood of thought. Hurst's 54-month teaching length sits near Kitchin; his 18-year length sits near Kuznets. On Level I, if the stem says Kitchin, answer 3–5 years / inventory. If it says Hurst nominal, answer the harmonic set idea from 11.1.

Business and inventory cycles

In market talk, business cycle is the expansion–contraction of activity (output, employment, profits). Inventory cycle is the shorter restocking loop inside that: production overshoots sales, inventories pile up, production is cut, inventories are drawn down, production revives.

Kitchin is the named inventory cycle (~3–5 years). Juglar is the named fixed-investment cycle (~7–11 years) that many textbooks treat as the classic business-investment rhythm. A technician does not need NBER recession dates memorized. You need to know that inventory is the short named wave and fixed investment is the longer named wave, and that equity prices often lead activity—so a market cycle can turn before the economic label turns.

Worked contrast: a manufacturer builds extra widgets for two years, then spends a year clearing the warehouse. That restocking loop is Kitchin-scale. A manufacturer spends a decade building a new plant, then lives with overcapacity. That capex loop is Juglar-scale. Housing stock and highway build-outs that take a generation of construction are Kuznets-scale. A cluster of new general-purpose technologies that reprices capital over half a century is Kondratieff-scale.

Do not call every 4-year stock-market rhythm "Kondratieff." Do not call a one-month farm seasonal a Kitchin cycle. Do not treat "business cycle" as a fifth named period with its own exclusive year count; it is the activity story that Kitchin and Juglar are already labeling at two different lengths.

Presidential and election cycles

The US presidential (election) cycle is a four-year calendar cycle tied to the presidential term. It overlaps the Kitchin neighborhood in length; it is a political-calendar story, not an inventory story.

Historical teaching in the Stock Trader's Almanac tradition, and in later empirical papers, is a tendency, not a law:

A typical compact sentence: weaker first half of the term, stronger second half, with year 3 often the standout in historical averages. Widely cited almanac-style long samples have put average returns on the order of about 3% post-election, 4% midterm, 10% pre-election, and 6% election year. Those figures are sample history. They can fail in any single administration. Level I wants you to name the four-year clock and the qualitative year-order, not to bet the sitting.

The presidential cycle is a seasonal/calendar-style time cycle: the period is fixed by the election calendar, while amplitude and phase vary (the variation principle from 11.1). A midterm year that rips higher does not "disprove" the name of the cycle. It reminds you that a named period is not a forecast engine.

Seasonal cycles and the annual cycle

A seasonal cycle is a calendar rhythm that repeats because the same dates keep coming back: winter heating demand, harvest pressure, January rebalancing, "sell in May" commentary, turn-of-month flows.

The annual cycle fits cycle theory because it has a period (12 months), an amplitude (typical high-to-low seasonal swing), and a phase (where in the year the typical crest and trough fall). It is a seasonal/calendar cycle with a fixed period. Agricultural markets often show clearer seasonals than a broad equity index; equities still have a researched annual shape (historically stronger November–April windows in many almanac studies)—again a tendency.

Common seasonal tools (the objective to restate them):

• Monthly seasonality tables (average return by calendar month)
• Year-over-year overlays or "same week last year" charts
• Seasonal indexes that average several years into one 12-month path
• Detrended monthly bars so the seasonal oscillation is not swallowed by a 10-year bull market

Two detrend methods from 11.1 still apply: subtract a moving average (or trend), and inspect a centered average so the seasonal wave is not lagged. Seasonals are easier to see after the trend is removed. That is how the annual cycle "fits" the 11.1 object: it is a 12-month time cycle whose phase is calendar-named (August low, January high, or whatever the market's own history shows).

Exam trap: calling a 54-year Kondratieff wave a "seasonal." Seasonal means calendar-locked inside the year (or another diary unit such as week or month), not "any cycle with a name."

Sequences and nonlinear cycles

Not every useful count is a constant period. Nonlinear / sequence tools stretch or skip in a pattern that is not one repeating wavelength.

Fibonacci time uses the same additive sequence you met in the Fibonacci unit (1, 1, 2, 3, 5, 8, 13, 21, 34, …). From a significant trough or crest, you count 8, 13, 21, 34 bars or calendar units as candidate time windows. The gaps grow. That is why this is a sequence, not a 21-bar time cycle. A 21-bar time cycle would keep printing ~21, ~21, ~21. Fibonacci time might print interesting windows at bar 13, then 21, then 34 from the same origin. It does not replace Hurst summation, and it does not guarantee a turn on bar 21.

3-wave versus 5-wave is sequence language, not an Elliott Wave course. In that vocabulary, a five-leg sequence is the usual way to describe a completed directional move (impulse-style counting). A three-leg sequence is the usual way to describe a countertrend move (corrective-style counting). Level I may ask you to recognize that 5 versus 3 is how some technicians count a completed sequence. It is not asking you to label every retracement with degree notation, or to trade "Wave 3." If you need Elliott structure, that is a later, heavier unit. Here, remember: 5 ≈ directional sequence, 3 ≈ corrective sequence, as counting words.

Worked recognition, not a trough forecast

Stem: "Which cycle is associated with inventory overshoot over about 40 months?" Kitchin.

Stem: "Which cycle is a 15-to-25-year building swing?" Kuznets.

Stem: "A technician counts 13, then 21, then 34 sessions from a crash low." Fibonacci time, not Juglar.

Stem: "Price traces five legs up and three legs down." Sequence language for a directional sequence then a correction—not a Kondratieff dating.

What you should not do on Level I: announce that the next Kondratieff winter begins on a specific quarter, or that the next presidential-year low must print in calendar year two. Variation and summation (11.1) already tell you why a single named clock fails as a prophecy: other waves add in, and actual periods flex. Recognition of the name and the period band is the scored skill.

Key Takeaways

• Kitchin ~3–5y inventory; Juglar ~7–11y fixed investment; Kuznets ~15–25y building; Kondratieff ~45–60y long wave
• Business/inventory: Kitchin is the inventory loop; Juglar is the capex loop
• Presidential cycle: 4 years; historically weaker first half, stronger year 3—a tendency
• Seasonal/annual: calendar-fixed period; tables, overlays, seasonal indexes
• Fibonacci time and 3-versus-5 counts are sequences; Level I = recognize names and periods, not forecast the next trough