展示HN：一个监测投资组合风险并在风险变得危险时发出警告的系统
我在意识到拥有多个经纪账户后，理解投资组合风险是多么困难时，构建了这个系统。<p>大多数工具只显示收益和图表，但风险往往悄然上升（集中度、回撤、波动性），除非你主动监控。<p>这个系统通过OAuth连接到经纪账户，持续同步持仓和交易，计算风险指标，并在超过阈值时触发警报。同时，它还会发送简单的每周总结，这样你就不必每天查看仪表板。<p>最困难的部分是跨经纪商规范化数据、正确处理历史持仓，以及决定哪些指标在实践中真正重要。<p>欢迎反馈。
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I built this after realizing how hard it is to understand portfolio risk once you have multiple brokerage accounts.<p>Most tools show returns and charts, but risk tends to creep up quietly (concentration, drawdowns, volatility) unless you actively monitor it.<p>This system connects to broker accounts via OAuth, continuously syncs holdings and transactions, computes risk metrics, and triggers alerts when thresholds are crossed. It also sends a simple weekly summary so you don’t have to check dashboards daily.<p>The hardest parts were normalizing data across brokers, handling historical positions correctly, and deciding which metrics actually matter in practice.<p>Feedback welcome.