Who this entry is for — Readers who want to study the complete accumulation schematic while separating observable events, interpretations, and variants instead of buying one rebound.
Accumulation is the model through which the Wyckoff tradition interprets a post-decline trading range as a possible net transfer of shares toward stronger interests before markup. “Accumulation” is an inference from price and volume: the chart does not directly reveal participants' identities or inventory.
Main events
| Abbreviation | Event | What the source describes | Limitation |
|---|---|---|---|
| PS | Material support after a decline, often with wider spread and rising volume | It does not identify the low | |
| SC | Culminating selling pressure, often absorbed near a low | A clear climax may be absent | |
| AR | Rally after selling pressure diminishes; helps define resistance | It does not confirm accumulation alone | |
| ST | Return toward the SC area, ideally on reduced spread and volume | A weak test keeps alternatives open | |
| Spring | Break below support followed by a prompt return into the range | Optional and requires confirmation | |
| SOS | Advance showing more effective demand | One bar can fail | |
| LPS | Reaction that preserves support after an SOS | Identified in context, not with certainty in advance |
Phase A — stopping the decline
Phase A indicates that the preceding downtrend is losing control. The complete schematic contains PS, SC, AR, and ST. The SC/ST lows and AR high help draw the first range boundaries.
The critical comparison is between SC and ST: a return with less selling pressure, narrower spread, and lower volume is consistent with diminishing supply. If price decisively crosses the SC area, the hypothesis weakens and new lows or a longer consolidation may follow. The sources also note that a downtrend can end without obvious climactic action.
Hypothetical example — After a long decline, a wide bar appears on exceptional volume and closes well off its low, followed by a rally. A later test of the low occurs on narrower spread and lower volume. The sequence fits Phase A, but does not yet prove a future upside exit.
Phase B — building the cause
In Phase B, price repeatedly explores the range. The teaching interprets this process as building the “cause” and possibly absorbing supply. Swings can be wide and noisy early; later reactions should become less effective if the accumulation hypothesis is correct.
Multiple Secondary Tests and upthrust-type actions near the upper boundary may occur. They have no fixed meaning in isolation. The Point-and-Figure count may grow, but its projection remains conditional and setting-dependent.
Phase C — testing supply
Phase C asks whether enough supply remains to prevent markup. Schematic 1 contains a spring: price moves below support and returns. Lower volume can be consistent with little residual supply; a deeper terminal shakeout can instead occur on high volume. The return, test, and later behavior matter more than a universal volume threshold.
Schematic 2 has no spring: testing can occur higher in the range. Forcing a missing spring makes the model less useful.
Phase D — evidence of strength
Phase D should show a more persistent demand advantage: SOS moves toward or above resistance, followed by LPS reactions that preserve higher levels. Later teaching sometimes calls the internal-resistance break a Jump Across the Creek and the next test a back-up.
| Evidence | Favorable reading | Invalidation or caution |
|---|---|---|
| SOS | Broad advance with follow-through | Immediate return into the range |
| LPS | Contained reaction that holds support | Persistent loss of the level |
| Price-volume | Rallies more effective than reactions | Repeated high volume without progress |
Phase E — exit and possible markup
In Phase E, price trades mainly above the range. New reaccumulation areas can form, but not every pause qualifies. The exit can fail and send price back into the range; continuity confirms the phase, not the label alone.
Nine buying tests
The full checklist appears in Nine buying and selling tests. In compact form:
- prior downside objective accomplished;
- PS, SC, and ST;
- bullish activity across rallies/reactions;
- downward stride broken;
- higher lows;
- higher highs;
- stock stronger than the market;
- horizontal base;
- estimated potential at least three times the loss at the initial stop.
The list organizes analysis; it is neither a guarantee nor a score to complete retrospectively.
Variants and limits
- Primary accumulation can stop a decline without a clear climax.
- In reaccumulation, PS, SC, and ST may be absent because there was no prolonged downtrend.
- A spring is optional; its absence does not invalidate the schematic.
- Phases are often recognized progressively and may be relabeled.
- No schematic replaces sizing, invalidation, or management of gaps and slippage.
Sources
- Jim Forte, Anatomy of a Trading Range, MTA Journal, 1994, for schematic events and phases.
- StockCharts ChartSchool, The Wyckoff Method: A Tutorial — “Accumulation: Wyckoff Events” and “Wyckoff Phases”.
- Wyckoff Analytics, Wyckoff Method, two schematic variants, nine tests, and count guide.
- Wyckoff Stock Market Institute, Library, for the Jump Across the Creek metaphor in later teaching.