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May 26, 2026
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美光市值首破1萬億美元 AI記憶體熱潮引爆股價狂飆

記憶體晶片大廠美光26日盤中市值首度突破一萬億美元大關,成為人工智慧 (AI) 熱潮下最新躋身「萬億美元俱樂部」的半導體企業,也凸顯記憶體晶片在 AI 基礎建設中的關鍵地位正快速提升。

美光股價周二美股盤中最高來到 886.6 美元,創歷史新高。

這波漲勢主要受到瑞銀 (UBS) 大幅調升目標價帶動。瑞銀將美光目標價從 535 美元一口氣上調至 1625 美元,成為目前追蹤美光的 46 家券商中最樂觀的一家。

瑞銀指出,AI 正改變整個記憶體產業結構,市場未來可能給予美光更接近「正常化」的高評價倍數,而非過去景氣循環股的估值模式。

該機構也看好,美光可望透過長期供貨協議與部分固定價格機制,進一步提升獲利能見度。

市場認為,AI 交易熱潮正從過去集中於 GPU 晶片,逐步擴散至記憶體與儲存領域。

美光先前已表示,公司 2026 年高頻寬記憶體 (HBM) 晶片產能已全數售罄,顯示需求遠超過供給。其下一代 HBM4 產品目前也已投入生產。

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