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A股价差捕获/做市策略分析。当用户说"价差捕获"、"做市策略"、"spread capture"、"买卖价差交易"、"做市商"、"报价策略"时触发。基于 cn-stock-data 获取数据，分析买卖价差特征、做市收益空间、库存风险。支持 formal/brief 两种输出风格。
Passed 19 of 24 test cases with the skill, and 17 of 24 without it.
2 fixed17 passed either way5 still failing0 broke
Tokens, turns and time describe resource use, not a dollar price.
One of 2 test cases the skill fixed. Same model, same prompt, with and without the skill.
做市商在紫光国微（002371.SZ）盘口双边提供流动性，买卖报价价差为 0.10 元，全天双边匹配成交总量为 500,000 股。请评估做市商的日内做市毛利润。
| Checked | Without skill | With skill |
|---|---|---|
| Calculates gross profit as 25,000 元 | Missed | Passed |
The instructions your model reads when the skill loads.
通过 cn-stock-data skill 获取数据：
test cases passed, vs 17 / 24 without
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