Coherent Surges 3.09% as Bullish Engulfing Pattern Emerges Amid Mixed Technical Signals

Coherent (COHR) closed the most recent session with a 3.09% gain to $175.71, rebounding from a prior session low of $170.115. Candlestick Theory reveals a potential bullish engulfing pattern as the recent candle closed above the December 17 bearish body, suggesting short-term strength. Key support appears near $170 (December 17 low), while resistance is evident at $186.67 (December 16 high). A breakdown below $170 could trigger further downside, while a close above $186.67 may confirm a broader bullish reversal.
Moving Average Theory indicates a mixed signal.

The 50-day MA (approx. $165–$170) is currently below the 100-day ($170–$175) and 200-day ($160–$165) averages, suggesting a flattening trend. Price is trading above all three, but the 50-day is approaching the 100-day from below, hinting at potential convergence. A crossover above the 100-day would strengthen the bullish case, while a drop below the 200-day could signal a deeper correction.
MACD & KDJ Indicators show divergent signals. The MACD histogram has expanded positively since mid-December, indicating growing momentum, but the KDJ indicator (Stochastic) suggests overbought conditions with a %K line near 80 and %D above 70. This divergence implies caution, as overbought levels often precede corrections, especially after the sharp 10% drop on December 12. A bearish crossover in the MACD could align with KDJ overbought divergence to signal a short-term top.
Bollinger Bands highlight volatility contraction prior to the December 18 rally, followed by a price close near the upper band ($179.5). This suggests a potential breakout confirmation, but the narrow bands before December 17 indicate low volatility, which may not support a sustained move. A retest of the upper band could trigger profit-taking, while a break above it may extend the rally.
Volume-Price Relationship shows mixed validation. The December 18 surge occurred with 4.63 million shares traded, below the 5.47 million volume on December 11 (a 0.53% gain). This weaker volume during the recent rally may suggest waning conviction, whereas the massive 7.2 million shares traded on December 12 during a 10% drop underscored a bearish climax. Sustained volume above 5 million during upmoves would strengthen bullish momentum.
RSI calculations (14-day) indicate overbought conditions, with the index likely above 70 following the recent 3.09% gain. However, the RSI bottomed near 30 in late November, then surged to over 70 by mid-December, reflecting a strong rebound. A close below 60 may signal a pullback, but given the stock’s volatility, this should be viewed as a warning rather than a definitive sell signal.
Fibonacci Retracement levels between the December 11 high ($200.01) and December 3 low ($158.21) highlight critical confluence. The 61.8% retracement level at $175.6 aligns with the current price, suggesting a potential support/resistance pivot. A break below $170 (38.2% level) could target $163.5 (December 1 low), while a move above $186.67 may test the $200.01 high.
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