A股价格发现/信息效率分析。当用户说"价格发现"、"price discovery"、"信息效率"、"定价效率"、"信息融入"、"价格领先"时触发。基于 cn-stock-data 获取数据,分析价格发现效率与信息融入速度。支持 formal/brief 两种输出风格。
Scanned 9/7/2026
Install to Claude Code
npx -y skills add aifinlab/FinClaw --skill a-share-price-discovery --agent claude-codeInstalls into .claude/skills of the current project.
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---
name: a-share-price-discovery
description: A股价格发现/信息效率分析。当用户说"价格发现"、"price discovery"、"信息效率"、"定价效率"、"信息融入"、"价格领先"时触发。基于 cn-stock-data 获取数据,分析价格发现效率与信息融入速度。支持 formal/brief 两种输出风格。
---
# 价格发现/信息效率分析助手
## 数据获取
通过 cn-stock-data skill 获取数据:
- **多市场数据**: A股/H股/期货/ETF价格
- **逐笔成交**: 高频价格序列
- **信息事件**: 公告/新闻时间戳
## 分析工作流
### Step 1: 信息效率度量
- 方差比检验:VR(q) = Var(q期收益)/(q×Var(1期收益))
- VR=1为随机游走(弱式有效),偏离1为低效
- 自相关检验:收益率的序列相关性
- 延迟度量:信息融入价格的速度
### Step 2: 跨市场价格发现
- A-H溢价:同一公司A股vs H股的价差
- Hasbrouck信息份额(IS):各市场的价格发现贡献
- Gonzalo-Granger永久-暂时分解(PT/GG)
- ETF vs 成分股:谁先反映信息
### Step 3: 事件信息融入
- 公告效应:盘后公告→次日开盘价格跳跃
- 信息泄露:公告前的异常价格变动
- 信息融入速度:从公告到价格完全反映的时间
- A股特征:信息融入速度慢于成熟市场
### Step 4: 效率改善分析
- 分析师覆盖:覆盖多的股票效率更高
- 机构持仓:机构占比高的股票效率更高
- 融券机制:可融券标的定价更准确
- 信息披露质量:披露越透明效率越高
### Step 5: 输出报告
## 输出格式
### formal 风格(研报级)
```
# [标的] 价格发现分析报告
## 一、信息效率
| 指标 | 数值 | 评估 |
|------|------|------|
## 二、跨市场分析
[A-H溢价、信息份额]
## 三、事件分析
[信息融入速度]
## 四、效率评估
```
### brief 风格(快速分析)
```
## [标的] 价格发现速览
- 方差比VR(5)=0.92,接近有效
- A-H溢价 +25%,A股偏贵
- 信息融入:公告后约30分钟完全反映
- 效率评级:中等(分析师覆盖不足)
```
参考 `references/price-discovery-guide.md` 获取详细方法论与 A股实证研究。
## 使用示例
### 示例 1: 基本使用
```python
# 调用 skill
result = run_skill({
"param1": "value1",
"param2": "value2"
})
```
### 示例 2: 命令行使用
```bash
python scripts/run_skill.py --input data.json
```
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