MT4 Auto Fibonacci (Fibo) Retracement & Extension Indicator

Fibonacci Retracement Levels

These levels represent historically significant retracement zones — 23.6%, 38.2%, 61.8%, and 78.6% — where price has previously shown interaction within uptrend corrections.

During downtrends, retracement levels reflect resistance zones where upside corrections have historically shown price interaction — the same structural logic applies in reverse.

Retracement levels are also referenced as structural boundaries for risk parameter definition within a position management framework. The 23.6% level is commonly used as a reference point in this context.

It is worth noting that price may move through several retracement levels before trend momentum resumes. In such cases, the retracement levels provide additional structural reference points at progressively deeper zones — 23.6%, 38.2%, 61.8% — allowing analysts to evaluate price behavior at each level as the move develops.

Fibonacci Extension Levels

Fibonacci extension levels are plotted in the direction of the prevailing trend — above current price during an uptrend and below during a downtrend. Unlike retracement levels which reflect correction depth, extension levels project how far price may move beyond the prior swing high or low if the trend continues.

During an uptrend, extension levels appear above the retracement zone and represent areas where upward momentum has historically shown interaction — including potential slowdown or reversal of the directional move. During a downtrend, extension levels are plotted below the retracement zone and function symmetrically, reflecting the same structural logic in the opposite direction.

The Auto Fibonacci indicator calculates and displays both retracement and extension levels automatically — updating them as new price extremes form, without requiring manual adjustment.

Fibonacci Oversold and Overbought Areas

When there is no definite trend on the market, the indicator evaluates price position relative to configurable oversold and overbought boundaries.

When the indicator operates in range mode, the oversold and overbought zones function as structural boundaries for evaluating price position within the range. A bullish condition is registered when price moves above the oversold level — reflecting a potential shift from compressed to expanding momentum in an upward direction. A bearish condition is registered when price moves below the overbought level — reflecting the same dynamic in a downward direction.

Price moving within the oversold or overbought zones — rather than crossing their boundaries — is generally considered a lower-context area for evaluation, as the directional bias remains undefined while price stays inside these ranges. The more significant analytical event is the boundary crossing itself.

The oversold and overbought levels also function as structural reference points for risk parameter definition. The oversold level represents a logical structural boundary on the downside when evaluating bullish conditions — a move back below it would indicate the registered condition has not held. The overbought level functions symmetrically for bearish conditions.