Amgen stock heads into the open after a weaker close
Published on 09/21/2026 at 09:20 | Editorial responsibility: Rafael Müller, Editor-in-Chief AD HOC NEWS
Amgen stock closed at USD 385.65 on the Nasdaq on September 18, 2026, down 1.6% from the prior session based on US quote data in USD. This left the shares trailing a modest gain in the S&P 500 index on the same day, highlighting a relative underperformance against the broader US market.
September 18, 2026 in numbers
Amgen Inc. (ISIN US0311621009) finished the September 18, 2026 session at USD 385.65 on the Nasdaq, with an intraday range between a low of USD 380.50 and a high of USD 388.90 per exchange data in USD. The stock’s move of approximately -1.6% contrasted with an S&P 500 gain of about 0.3% on the same date, underscoring a softer performance versus the benchmark index. Trading volume for Amgen on September 18, 2026 reached roughly 2.8 million shares, aligning with its recent average turnover for US sessions.
At this closing level, Amgen remained below a recent 52-week high near USD 400 while holding comfortably above a 52-week low around USD 260 according to data compiled from US market quote services. This positioning suggests the stock is trading in the upper half of its 52-week range heading into today’s US session. The broader US indices, including the S&P 500 and the Nasdaq Composite, also closed in positive territory on September 18, 2026, offering a constructive backdrop for large-cap healthcare names.
Events on September 21, 2026
According to an earnings and events overview maintained by MarketBeat, Amgen is among healthcare stocks flagged for elevated recent trading interest as markets head into the September 21, 2026 session. Broader macro attention today centers on upcoming US economic data and central-bank related commentary that could influence risk appetite for defensive healthcare stocks, as highlighted in recent US market recap coverage by TTV. No company-specific earnings release for Amgen is scheduled for today in the cited healthcare calendars, so investors are likely to watch sector moves and macro news for cues into today’s trading.
