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A |     PARIS -- Three French airports in the cities of Lyon, Toulouse and Lille were evacuated on Wednesday following security alerts, police said. They were the latest in a series of evacuations around France this week that included popular tourist attractions the Louvre Museum and Versailles Palace following the killing of a teacher in the northern city of Arras on Friday. All the threats up to Wednesday proved false. Emailed threats of an attack were received at the airports in the southeast city of Lyon, the southern city of Toulouse and Lille in northern France, police said, without elaborating on the contents of the emails.The prefecture for the Lyon region said Wednesday that the threat at the airport was a false alarm and reminded the public that communicating false information can lead to prison and a heavy fine.Meanwhile an abandoned piece of luggage briefly disrupted operations at the airport in the Riviera city of Nice, the airport said. The Louvre Museum and the Palais de Versailles were evacuated Saturday, and the royal palace was again evacuated Tuesday. A high school in Arras, in northern France, was evacuated on Monday ahead of a moment of silence in schools around France, three days after the murder of a teacher at the Arras school allegedly carried out by a former student and suspected Islamist extremist. France has raised its threat alert to its highest level. The anti-terrorism prosecutor said on Tuesday that the suspect declared his allegiance to the so-called Islamic State group before the fatal stabbing.。    　　作为AI交易的重要风向标，英伟达财报已成为全球投资者关注的关键事件。但随着市场预期不断升高，投资者对英伟达再次凭借超预期业绩推动股价大涨的期待似乎正在降温。　　美东时间周三（8月26日）美股盘后，AI芯片巨头英伟达将公布2027财年第二季度财报。　　媒体近日援引英伟达期权市场最新数据表示，财报公布后的次日（当地时间本周四），英伟达股价预计可能出现约5.4%的双向波动，即上涨或下跌幅度均可能达到5.4%左右。　　该波动预期源于期权价格所反映的隐含波动率，代表市场通过期权交易形成的财报后股价波动预期，但并不判断股价上涨或下跌方向。　　据期权数据分析机构Option Research&Technology Services（ORATS）数据，5.4%的预期波动幅度对应英伟达约2800亿美元的市值变化空间，这一规模超过标普500指数中约90%成分股的各自市值。

B | 　　值得注意的是，该波动幅度低于其5月财报公布前期权定价反映的6.5%波动预期，同时也显著低于英伟达过去12个季度7.4%的历史平均股价波动幅度。　　ORATS创始人Matt Amberson表示：“这表明市场对英伟达财报后股价大幅波动的担忧有所下降，也意味着该股走势正变得更可预测。”　　衍生品策略机构Susquehanna衍生品策略联合主管Chris Murphy指出，本次期权市场反映出的波动预期相对温和，印证了过去两年的一个常见现象——财报公布后，股价实际波动幅度往往低于期权市场此前定价所反映的预期水平。

C | 　　Murphy表示：　　“人工智能时代初期，英伟达财报大幅超出预期，股价动辄走出10%、15%、20%的行情，屡屡震惊市场，这个阶段基本已经过去。市场并不认为英伟达会再度爆出超大规模业绩利好，带动股价大幅拉升。”　　英伟达股价当地时间本周一收跌2.91%，报208.48美元，录得连续第七个交易日下跌。

D | 　　尽管近期遭遇回调，英伟达今年以来仍累计上涨11.7%，过去12个月累计涨幅达15.94%。对比同期大盘表现，年内标普500指数累计上涨11.8%，费城半导体指数累计上涨61%。注：图为英伟达过去一年股价走势　　大盘承压　　英伟达股价回调正值美股大盘承压。　　近日，美国政府债务规模攀升引发普遍担忧，美债收益率持续走高，30年期美债收益率上周创下19年新高。　　当地时间周一，有报道称美国财政部长贝森特或将动用规模近1万亿美元的财政部一般账户资金，为债券回购提供资金。受此消息影响，30年期美债收益率周一小幅回落，但仍维持在5%上方。　　业内指出，美债收益率飙升对美国成长股与科技股形成冲击，华尔街主要股指走低。　　上周，纳斯达克综合指数下跌2.05%，标普500指数和道琼斯工业平均指数分别下跌1.43%、0.85%；科技板块表现更弱，标普500信息技术板块当周下跌3.51%，费城半导体指数当地时间8月18日单日下跌4.98%。　　在此背景下，投资者将重点关注英伟达的营收指引、芯片需求、利润率水平，以及各大云服务商是否会继续扩大AI相关资本开支。

E | （文章来源：财联社）。

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