Writing the long S&P 500 trendline and cycle junction as one hypothesis

Three working assumptions

The source presents technical analysis as resting on three working assumptions: that markets discount available information, that prices move in trends, and that historical patterns tend to recur in kind rather than as identical copies.

The source treats a trendline break in a widely followed stock as information that typically reaches only chart-using participants, in contrast to an earnings surprise that is expected to be noticed by the whole market.

The broken 1982 uptrend line

On a monthly S&P 500 chart spanning 1987 to the then-present, an uptrend line drawn from the 1982 low is described as broken in mid-2002, with the June decline placing the index clearly beneath that dominant trend.

A trendline is a straight line drawn through successive lows or highs that turns a visible price path into a testable condition: stay above it and the prior regime remains intact; close through it and that hypothesis is rejected.

A five-year head-and-shoulders neckline

The same monthly chart is annotated as a five-year head-and-shoulders reversal whose neckline sits in the 950 to 960 area. A break of that neckline is presented as the point at which a buy-on-dips long position becomes a losing trade.

The head-and-shoulders is a three-peak reversal geometry whose left shoulder, head, and right shoulder sit above a neckline. A close through that neckline converts the pattern from description into a failed-uptrend case. The neckline is the support line connecting the lows between the two shoulders and, in this case study, the decision level that separates a still-salvageable dip from a completed reversal.

The source reconstructs the psychology of the formation as successive failed attempts at new highs after the left shoulder and head, with a buy-and-hold participant adding on each dip until the right-shoulder failure and neckline break leave only selling at a loss or waiting much longer.

When buy-on-dips meets a completed reversal

Buy-on-dips behavior that had worked for nearly 15 years is illustrated with the 1998 Asian-crisis pullback, after which the market is said to have declined for only one month before the later top remained non-obvious into late 2000 and 2001.

Buy-on-dips is the habit of adding exposure on pullbacks that worked while a long uptrend stayed intact, and that becomes the mechanism of loss once a reversal geometry completes.

Dated baselines for a post-bubble path

The source uses the Nikkei's rise above 30,000 and a subsequent multi-year deflation of that bubble, lasting more than 10 years without a resumed bull trend, as a historical template for a post-2000 US regime that could last until at least 2010 if a similar 10-year path is assumed from the 2000 peak.

A 54-year trough-to-trough Kondratieff cycle applied to a 1960 low is used as a second dated baseline, placing a comparable trough around 2014. The source notes that overlaying the 10-year Nikkei template already reaches about 50 years through that cycle by 2010.

A dominant-cycle, as used here, is a historically observed interval between comparable market or economic turning points. It is a dated baseline for how long a post-bubble regime might last rather than a day-to-day timing tool.

Evidence that a new uptrend has begun

Two dominant downtrend lines are cited as defining the then-current market direction. The source argues that attempting to catch the exact low tick is futile. A constructive alternative is waiting for a new uptrend with two points to form a trendline, or a monthly close above 980, as a bullish signal.

That monthly close is a monthly-close-threshold: a pre-stated higher-timeframe confirmation used to define what would count as evidence that a new uptrend has begun.