Buy or Sell Amgen Stock Ahead of Its Earnings?

Amgen (AMGN) is scheduled to report earnings on August 5, 2025, with analysts expecting Q2 EPS of $5.28 on $8.91 billion in revenue. Historically, AMGN's stock has shown a tendency for negative one-day returns post-earnings, declining 58% of the time over the past five years with a median drop of -2.8%, though positive one-day returns occurred 42% of the time. This historical pattern, alongside analysis of correlations between short and medium-term returns, is a key factor for event-driven traders considering pre- or post-earnings positioning.

Analysis

Amgen (AMGN) is approaching its August 5, 2025 earnings release with analyst consensus expecting year-over-year growth, forecasting earnings of $5.28 per share on $8.91 billion in revenue, compared to $4.97 and $8.39 billion respectively in the prior-year quarter. Despite this positive fundamental outlook, historical trading data reveals a notable negative bias in the stock's immediate post-earnings performance. Over the past five years, AMGN shares have declined following 58% of its earnings announcements. The median one-day negative return during these instances was -2.8%, while the median positive return was 3.6%. While a more recent three-year view shows a slight increase in the frequency of positive returns to 45%, the prevailing pattern remains a headwind for the stock post-announcement. This historical price action presents a key consideration for event-driven strategies, weighing the company's solid fundamentals—including a $160 billion market capitalization and $7.4 billion in trailing twelve-month operating profits—against a statistically significant tendency for a short-term sell-off.

Key Decisions for Investors

• Given the historical data showing a 58% probability of a negative one-day return post-earnings, traders may consider tactical short positions or protective puts to hedge against a potential drop.
• Investors should closely watch the initial one-day price movement, as the correlation between short-term and medium-term returns can offer guidance for positioning in the days following the announcement.
• A significant earnings or revenue beat relative to the consensus estimates of $5.28 EPS and $8.91 billion revenue could be required to overcome the historical negative trading pattern and trigger a sustained positive reaction.