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<title>04-4 滚动窗口分析 — LRS TQQQ 策略研究</title>
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<a href="index.html" class="nav-brand">← 目录</a>
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<span class="nav-chapter">Chapter 04 &nbsp;·&nbsp; 质疑与压力测试 &nbsp;·&nbsp; 4.4</span>
<span class="nav-counter">4.4 / 4.4</span>
<a href="04c.html" class="nav-btn">← 4.3</a>
<a href="05.html" class="nav-btn">Ch.05 →</a>
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<span class="page-num">04 &nbsp;·&nbsp; 4.4</span>
<h1 class="page-title">滚动窗口分析</h1>
<span class="page-sub">Chart J · Rolling ~5y excess vs QQQ</span>
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<span class="ph-num">J</span>
<h3>滚动约 5 年超额收益分布</h3>
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<div class="ph-sub">横轴:LRS 总收益 − QQQ 总收益(百分点);避免只展示单一固定起点</div>
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<img src="charts/chart_j_rolling.png" alt="Chart J 滚动窗口" loading="lazy">
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<span class="ch-num">读图</span>
<span class="ch-title">分布比单点更重要</span>
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<li>若大量窗口超额为负,说明策略优势高度依赖特定年代。</li>
<li class="hi">中位数相对零轴的位置,可作为「稳健性」的粗粒度参考。</li>
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