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Feng Yu

Python developer building quantitative risk tools & AI data automation. Creator of Crash Simulator, a market stress-testing tool built on insurance catastrophe modeling.

Location Guangzhou, China Joined Joined on  Personal website https://github.com/fengyuGbt
Ask PyData: A Source-Linked Agent for Python Data Library Decisions

Sanity Challenge Path One Submission

Ask PyData: A Source-Linked Agent for Python Data Library Decisions

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4 min read

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When the Market Learns the Rule: Front-Running the Backstop

When the Market Learns the Rule: Front-Running the Backstop

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5 min read
The Backstop That Listens: Regime Triggers and the Expectations Channel

The Backstop That Listens: Regime Triggers and the Expectations Channel

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5 min read
The Backstop Clock: Pricing the Twenty-Day Window in Code

The Backstop Clock: Pricing the Twenty-Day Window in Code

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4 min read
The Twenty-Day Window: Pricing the Policy Residual

The Twenty-Day Window: Pricing the Policy Residual

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5 min read
The Cascade Runs Ahead of the Flip

The Cascade Runs Ahead of the Flip

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4 min read
Why the Spiral Stops: The Gamma Flip

Why the Spiral Stops: The Gamma Flip

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4 min read
What a Single 3.07x Hides: From Mechanism to Distribution

What a Single 3.07x Hides: From Mechanism to Distribution

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4 min read
Discrete Margin & the Liquidation Window: Why a 10% Print Can Land at 18%

Discrete Margin & the Liquidation Window: Why a 10% Print Can Land at 18%

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5 min read
Endogenous Hazard: The Model Starts Listening to the Market

Endogenous Hazard: The Model Starts Listening to the Market

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4 min read
Short Gamma: The Market-Maker Spiral

Short Gamma: The Market-Maker Spiral

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5 min read
System Dynamics: When the Crash Becomes Its Own Engine

System Dynamics: When the Crash Becomes Its Own Engine

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4 min read
SKEW: The Market's Own Admission of Tail Risk

SKEW: The Market's Own Admission of Tail Risk

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5 min read
Vine Copulas: Why Everything Falls Together When the Market Crashes

Vine Copulas: Why Everything Falls Together When the Market Crashes

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6 min read
I Built a Stock Market Crash Simulator Using Insurance Catastrophe Modeling

I Built a Stock Market Crash Simulator Using Insurance Catastrophe Modeling

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5 min read
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