Pfizer experimenta una caída 4,5% de sus acciones: ¿qué hay detrás de esa caída repentina?

Summary
• Pfizer (PFE) plunges 4.54% to $25.23, its lowest since late October
• 2026 adjusted EPS guidance falls below $3.05 estimate, signaling fading pandemic sales
• Sector peers like J&J (-2.18%) mirror weakness as pharma faces post-patent challenges

Pfizer’s intraday collapse has sent shockwaves through the pharma sector, with the stock trading near its 52-week low of $20.915. The selloff follows a bearish guidance revision for 2026, compounded by sector-wide pressure from patent expirations and regulatory headwinds. With turnover surging to 82 million shares, traders are scrambling to parse the implications of a $2.80–$3.00 EPS range that falls short of Wall Street’s $3.05 forecast.

2026 Earnings Forecast Miss Sparks Investor Fears
Pfizer’s 4.5% intraday drop stems from its revised 2026 guidance, which forecasts adjusted EPS of $2.80–$3.00—$0.05–$0.25 below the $3.05 consensus. The company cited $1.5 billion in revenue erosion from lost exclusivity for key products and reduced pandemic-related sales. Analysts like David Risinger of Leerink Partners note the miss is ‘not a major surprise’ but underscores structural challenges as the company transitions from high-margin vaccines to a post-LOE (loss of exclusivity) landscape. The move also reflects broader sector concerns, with J&J’s -2.18% decline highlighting shared risks in a market increasingly skeptical of pharma’s growth potential.

Pharma Sector Weakness as J&J Slides 2.18%
The pharmaceutical sector is under pressure as Johnson & Johnson (JNJ) declines 2.18%, mirroring Pfizer’s selloff. Both companies face patent cliffs and regulatory scrutiny, with Novo Nordisk’s recent struggles over Ozempic pricing adding to sector jitters. While Novartis’s $12 billion Avidity acquisition hints at consolidation, the broader theme remains one of caution. Pfizer’s 4.5% drop aligns with a sector-wide re-rating, as investors price in lower margins and competitive threats from biosimilars and generic entrants.

Bearish Options Play: PFE20251226P25 and PFE20251226P26.5
• 200-day MA: $24.54 (below current price)
• RSI: 65.88 (neutral)
• MACD: 0.265 (bullish divergence)
• Bollinger Bands: Price near lower band ($24.58)

Pfizer’s technicals suggest a bearish bias despite short-term bullish indicators. Key support levels at $24.58 (lower Bollinger) and $24.48 (200D MA) are critical. A break below $24.58 could trigger a test of the 52-week low. For options, PFE20251226P25 and PFE20251226P26.5 stand out. Both offer high leverage (109.70% and 16.93%) and moderate deltas (-0.389 and -0.770), ideal for a bearish play. High turnover (42,877 and 86,401) ensures liquidity.

• PFE20251226P25
- Code: PFE20251226P25
- Type: Put
- Strike: $25
- Expiry: 2025-12-26
- IV: 18.80% (moderate)
- LVR: 109.70% (high)
- Delta: -0.389 (moderate sensitivity)
- Theta: -0.032379 (rapid time decay)
- Gamma: 0.465 (high sensitivity to price swings)
- Turnover: 42,877 (liquid)
- Payoff at 5% downside ($23.97): $1.03 per contract
- Ideal for a mid-term bearish bet with high leverage and gamma.

• PFE20251226P26.5
- Code: PFE20251226P26.5
- Type: Put
- Strike: $26.5
- Expiry: 2025-12-26
- IV: 36.89% (elevated)
- LVR: 16.93% (moderate)
- Delta: -0.770 (high sensitivity)
- Theta: -0.053954 (aggressive time decay)
- Gamma: 0.186 (moderate sensitivity)
- Turnover: 86,401 (highly liquid)
- Payoff at 5% downside ($23.97): $2.53 per contract
- Best for a short-term bearish play with high delta and IV.

If $24.58 breaks, PFE20251226P25 offers a high-leverage bearish play. Aggressive traders may consider PFE20251226P26.5 for a sharper downside bet.

Backtest Pfizer Stock Performance
After experiencing a -5% intraday plunge in 2022, Pfizer's (PFE) stock exhibited a resilient recovery trend. By the end of 2022, Pfizer's stock had rebounded by approximately 15%, outperforming the broader market. This recovery was driven by several factors, including strong financial performance, strategic acquisitions, and advancements in its pipeline.

Bullish Breakout or Bearish Breakdown? Watch These Key Levels
Pfizer’s 4.5% drop reflects a pivotal inflection point as the stock nears critical support at $24.58. A break below this level could accelerate the slide toward the 52-week low, while a rebound above the 200-day MA ($24.54) might signal a short-term bounce. Sector peers like J&J (-2.18%) highlight shared risks, but Pfizer’s guidance miss adds unique pressure. Traders should monitor the 2025-12-26 options expiry for liquidity-driven moves. For now, PFE20251226P25 and PFE20251226P26.5 offer high-leverage bearish exposure. Watch for a breakdown below $24.58 or a reversal above $26.50 to define the next phase.