From 78638a0802d07ef1ef0bc0523ebe5ef8f80d9292 Mon Sep 17 00:00:00 2001
From: shellway <413209390@qq.com>
Date: Mon, 28 Sep 2026 17:08:17 +0800
Subject: [PATCH] Update
 "%E7%9F%A5%E8%AF%86%2F%E9%A3%8E%E9%99%A9%E5%B9%B3%E4%BB%B7"

---
 ...%A5%E8%AF%86%2F%E9%A3%8E%E9%99%A9%E5%B9%B3%E4%BB%B7.md | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/%E7%9F%A5%E8%AF%86%2F%E9%A3%8E%E9%99%A9%E5%B9%B3%E4%BB%B7.md b/%E7%9F%A5%E8%AF%86%2F%E9%A3%8E%E9%99%A9%E5%B9%B3%E4%BB%B7.md
index 14783ed..8f94ba3 100644
--- a/%E7%9F%A5%E8%AF%86%2F%E9%A3%8E%E9%99%A9%E5%B9%B3%E4%BB%B7.md
+++ b/%E7%9F%A5%E8%AF%86%2F%E9%A3%8E%E9%99%A9%E5%B9%B3%E4%BB%B7.md
@@ -5,10 +5,10 @@
 ## 💡 直觉
 等权买股债，其实风险九成来自股票；风险平价让风险真正平分。
 
-## 🧮 公式 / 口径
-```
-    求解 w 使各资产的风险贡献 RC_i = w_i·(Σw)_i / (wᵀΣw) 相等
-```
+## 🧮 公式
+$$
+RC_i = \frac{w_i\,(\Sigma w)_i}{w^{\top}\Sigma\,w},\qquad RC_i = RC_j\;\;\forall i,j
+$$
 
 ## ⚠️ 常见误区
 需(协)杠杆才能达到目标收益；对协方差估计敏感。