Elliott waves and Fibonacci levels: an anchor-by-anchor calculation
Calculate retracement levels from an invented movement and keep the anchor choice separate from the resulting numbers.
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A retracement level depends on the movement you selected. Before comparing levels on two charts, compare their anchors and price scale. A correct calculation on the wrong movement is still the wrong input for that research question.
Fix the two turning points
Use an invented advance from 100 to 160. Its arithmetic price length is 60. Record the timestamps and full relevant extremes of those anchors. The following levels describe this particular upward movement on an arithmetic price scale.
Calculate the levels explicitly
A downward retracement of 0.382 gives 160 minus 60 times 0.382, or 137.08. The halfway level is 130. A retracement of 0.618 gives 122.92. The halfway mark is commonly shown alongside Fibonacci ratios; here it simply marks half of the selected movement.
Change the anchor before comparing results
If another review starts at 110 instead of 100, the measured movement is now 50. Its 0.382 level is 140.90. The difference from 137.08 follows from different anchors; it does not show a contradiction in the arithmetic. Label the two calculations separately.
Keep a level separate from a wave rule
These numbers are reference levels in a synthetic exercise. Reaching one does not establish that a correction is complete, and missing one does not by itself invalidate an otherwise relevant wave hypothesis. Check the structural model and its rejection conditions separately.
Two reviewers obtain 137.08 and 140.90. What should they compare first?
Compare the selected start, end and scale. Here the differing start anchors fully explain the different calculated levels.
Retracement levels anchored at 100→160
Fix fictional anchors 100 and 160 on a linear scale. The rise is 60, so each retracement level is 160−60×r. For r={0.382, 0.5, 0.618, 0.786}, the levels are 137.08, 130, 122.92 and 112.84 respectively. Horizontal lines display those calculations, not observed market turns.
50% is a common reference fraction, rather than an exact ratio of consecutive Fibonacci numbers. Every line is a conditional reference: price need not reverse there, and a touch does not confirm a wave count. Fix the anchors, scale and degree before comparing; check structural rules separately.
After 100→160, price reaches 122.92. Does this establish the end of wave 2?
No. It measures a 61.8% retracement of the chosen interval: (160−122.92)/60=0.618. A wave 2 assessment also requires its structure, degree and context.