Advanced Micro Devices, Inc. closed at $528.75 on October 17, 2026, a decline of 5.94% from the prior session. The move extended a difficult stretch for the chipmaker, which has now fallen 13.05% over the past seven days.
Despite the recent pressure, AMD retains a 30-day gain of 3.09%, suggesting the stock had climbed earlier in the rolling month before giving back a significant portion of those advances. The company's market capitalization stood at $917.83 billion as of the close.
The back-to-back sessions of selling brought AMD's weekly loss into double-digit territory, a notable pullback for one of the semiconductor sector's largest companies by market value. Friday's decline accounted for a substantial share of the seven-day retreat.
No single catalyst was identified in the available data to explain the move. The figures reflect closing prices and percentage changes as reported for the October 17, 2026 trading session.
