我们来看看路透社报道的时间线:
June 9, 2025 6:00 AM EDT: India regulator probes Jane Street's derivative trades over three years, sources say
July 4, 2025 4:21 AM EDT: Shares of Indian brokers, BSE drop as regulator bars Jane Street
July 4, 2025 4:54 AM EDT: India bars Jane Street from its securities market, citing manipulation of stock indexes
July 4, 2025 5:35 AM EDT: What is Jane Street, the US trading firm facing heat in India?
July 4, 2025 11:23 AM EDT: India markets regulator to widen probe into Jane Street, source says
July 7, 2025 3:03 PM EDT: Jane Street to challenge market manipulation charges by Indian regulator, email shows
July 7, 2025 3:08 AM EDT: India markets regulator to enhance surveillance against derivatives manipulation, chairman says
July 7, 2025 4:44 PM EDT: Indian retail investor losses on derivative trades widened in 2024-25, regulator says
然后我们看看彭博社 Matt Levine 对此事件的分析:
July 7, 2025 at 12:45 PM EDT: Jane Street’s Indian Options Trade Was Too Good
在 2024 年 4 月 18 日的一期通讯中,Levine 就提到了 Jane Street 在印度的量化交易策略的秘密引发的一桩官司。
在 4 月 22 日的通讯中,Levine 点名了交易策略的对象是印度。
Jane Street 和 Millenium Management 的官司在去年底结案。
印度在今年六月初才调查 Jane Street,这算是后知后觉。
根据印度提供的 105 页调查报告,Matt Levine 对 Jane Street 的交易进行了分析(ChatGPT 对分析的解读),认为这天的交易做得很好,增进了市场效率。但是我没有被完全说服。果然,今天早些时候印度方面要对 Jane Street 扩大调查。我会耐心等待调查结果。
我的直观感觉得到了印证,Levine 遭到了很多人的反驳,很多交易员认为 Jane Street 是在操纵市场。Levine 的下文列出了一些反驳:
July 8, 2025 at 2:12 PM EDT Floor Traders Want Their Seats Back
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