A股收評:三大指數齊跌!北證50指數大跌逾6%,全市場超4400股下跌
5月22日,A股主要指數今日集體走低,截至收盤,滬指跌0.22%報3380點,深證成指跌0.72%,創業板指跌0.96%,北證50指數大跌6.15%。全天成交1.14萬億元,較前一交易日縮量746億元,全市場超4400股下跌。

盤面上,電池板塊走低,力佳科技跌近10%;寵物經濟板塊持續回撤,可靠股份跌逾14%;環氧丙烷板塊走弱,紅牆股份觸及跌停;汽車服務震盪下行,德衆汽車跌超7%;乳業、轉基因及供銷社概念等跌幅居前。另外,銀行板塊逆市走高,中信銀行領漲;重組蛋白板塊延續漲勢,三生國健20%漲停;數字哨兵、商湯概念及多模態AI等板塊漲幅居前。

具體來看:
寵物經濟板塊持續回撤,可靠股份跌逾14%,源飛寵物跌停,青木科技、依依股份、大千生態、金河生物等跟跌。

汽車服務震盪下行,德衆汽車跌超7%,山子高科、迪生力、杭鋼股份等跟跌。

銀行股再度活躍,浦發銀行、江蘇銀行、成都銀行再創歷史新高,青島銀行、滬農商行、渝農商行、重慶銀行、長沙銀行等再創年內新高。

分析人士表示,美國20年期國債拍賣結果不佳,隔夜美國金融市場遭遇“股債匯三殺”,可能引發全球避險、觀望情緒升溫。對應到A股市場,這可能對流動性更爲敏感的小盤股造成壓力,而高股息防禦性板塊可能成爲資金“避風港”。此外,從歷史經驗看,當微盤股和大盤股背離到一定程度後,走勢剪刀差往往會迎來階段性收斂。
軍工股再度走強,四創電子、銀河電子、國科天成漲停,國睿科技、航天南湖、王子新材、內蒙一機、利君股份漲幅居前。

天風證券指出,2025Q1主動型基金前十大軍工股持有流入總市值絕對值的前十中,軍工電子板塊標的佔80%。過去三年軍工電子板塊較其他軍工子板塊超跌較多,在長尾效應下週期反彈銳度或將凸顯,板塊景氣度修復時或成爲首選,軍工電子持倉佔比有望持續提升。
數據中心電源、三代半導體概念股漲幅居前,海特高新、中恆電氣、中超控股漲停,電光科技、通合科技、歐陸通等個股漲幅居前。


消息面上,美股納微半導體(Navitas)美股盤後漲超195%,公司宣佈與英偉達合作開發下一代800V高壓直流(HVDC)架構,爲包括Rubin Ultra在內的GPU提供支持的"Kyber"機架級系統供電。此外,在數據中心電源方面,英偉達另一個重要合作夥伴是維諦技術。5月20日,維諦技術宣佈計劃在2026年下半年推出800 VDC電源產品系列,支撐英偉達NVIDIA整機櫃計算平臺。
AI應用概念再度活躍,慧博雲通、盛視科技等漲停,創意信息漲超9%,柏星龍、鴻博股份漲超7%。

行業方面,今年以來Manus、智譜AutoGLM、字節釦子空間、阿里飛豬“問一問”等現象級產品接連涌現,C端Agent賽道迎拐點。儘管尚未有明確的產品定義,但Agent類別與應用場景已迅速豐富。其中,中美大廠Agent發展思路存在差異,北美雲廠商主要關注幫助客戶高效部署模型和Agent,國內互聯網大廠Agent佈局仍延續互聯網時代用戶流量邏輯;而中美B端企業則均關注Agent創建和管理平臺。
展望後市,東莞證券表示,當前A股市場展現出較高的戰略定力和更強的韌性,大盤在當前位置具備進一步上行的支撐。不過考慮到上方存在較大拋壓,短期內市場可能延續震盪整理格局,但從中長期視角看,隨着經濟基本面的逐步改善,市場有望延續企穩回升態勢。
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