关于本站 / About
本站是什么 / What this site is
USA Stock Insight 是一个以北京时间为主的美股研究参考站。它提供五样东西：最近完整交易日的收盘简报（三大指数、19 个行业与主题代理、VIX 与市场温度）、重要事件日历和六个核心事件指南、美股交易时间与休市日历（北京时间对照）、按发布日期固定的晨报归档，以及一个默认关闭、需要显式开启的 AI 研究助手。
USA Stock Insight is a U.S. market reference site read in Beijing time. It offers five things: a close brief for the latest completed session (three major indices, 19 sector and theme proxies, VIX and market temperature), a catalyst calendar with six core event guides, U.S. trading hours and market holidays in Beijing time, a morning-brief archive fixed at publication date, and an AI research desk that is off by default and must be enabled explicitly.
发布主体 / Publisher
本站由 USA Stock Insight 发布。没有账户系统，也不提供邮件订阅。
This site is published by USA Stock Insight. There are no accounts and no email subscriptions.
数据从哪里来 / Where the data comes from
指数日 K 来自腾讯行情接口，行业与主题 ETF 日 K 来自新浪财经接口，VIX 使用 Cboe 公布的同日历史记录。经济日历的时间来自 BLS、BEA 和美联储的官方日程；交易时段、休市日与提前收盘日来自本站维护的 NYSE 官方日历。资讯板块只使用美联储官方 RSS 与 SEC EDGAR 文件接口。日期对齐、缺失处理和回退规则见方法页。
Index daily bars come from Tencent's quote API, sector and theme ETF daily bars from Sina Finance, and VIX from Cboe's published same-date history. Calendar times come from the official BLS, BEA and Federal Reserve schedules; sessions, holidays and early closes follow the NYSE calendar maintained on this site. The news section uses only official Federal Reserve RSS feeds and the SEC EDGAR filing API. Date alignment, gap handling and fallback rules are in the methodology.
本站不是什么 / What this site is not
本站不提供投资建议，也不声称投顾资质。数字、规则摘要和 AI 输出都是公开信息的研究辅助；自动计算不等于独立行情源交叉验证或具名人工复核。使用前请核对每个来源、时点和口径。
This site is not investment advice and claims no advisory credential. Numbers, rule summaries and AI output are research aids over public information; automated calculation is not independent price verification or named human review. Check each source, date and basis before relying on anything here.