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SOPHIE

SOPHIE Daddy Quant Blog

A personal blog and YouTube channel on quantitative finance — AI-assisted research across market analysis, options strategies, and stock insights.

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Explore 226+ articles on quantitative finance, options trading, and market analysis

Duquesne Family Office Q2 2026 13F Analysis: Strategic Rotation in Macro and AI InfrastructuresVideo
Duquesne Family Office Q2 2026 13F Analysis: Strategic Rotation in Macro and AI Infrastructures
August 15, 2026·Google Doc·YouTube
Druckenmiller dumped chipmakers for cloud monopolies and stranded-power crypto miners, barbelled with LatAm commodities and aviation stocks.
YouTubeRead Article
The Hidden Mechanics of Form 13F Disclosures: Microstructure, Copycat Economics, and Systemic RiskVideo
The Hidden Mechanics of Form 13F Disclosures: Microstructure, Copycat Economics, and Systemic Risk
August 13, 2026·Google Doc·YouTube
Inside 13F filings: millisecond XML parsing, copycat trades worth 5.5-6.7% alpha, confidential treatment requests, and front-running's 2.6% drag.
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Quantitative Assessment of the Fixed-Income Market: Identifying Turning Points in the Macroeconomic CycleVideo
Quantitative Assessment of the Fixed-Income Market: Identifying Turning Points in the Macroeconomic Cycle
August 10, 2026·Google Doc·YouTube
Spotting bond-market turning points via stall-speed indicators, yield curve dynamics, term premium decomposition, the r* framework, and OAS spreads.
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The Architecture of Exchange-Traded Funds: Mechanisms, Trading Strategies, and Structural RisksVideo
The Architecture of Exchange-Traded Funds: Mechanisms, Trading Strategies, and Structural Risks
August 7, 2026·Google Doc·YouTube
ETF mechanics unpacked: the dual-market structure, the tax-saving heartbeat trade, low-liquidity execution tactics, and the USO contango anomaly.
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Quantitative Trading of Mean Reversion: Factor Models, Execution Dynamics, and Rigorous Research PracticesVideo
Quantitative Trading of Mean Reversion: Factor Models, Execution Dynamics, and Rigorous Research Practices
August 4, 2026·Google Doc·YouTube
Statistical arbitrage explained: CAPM to Fama-French factors, IPCA and deep-learning extraction, Ornstein-Uhlenbeck models, and overfitting safeguards.
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Decoding the Volatility Surface: Advanced Market Prediction Through Options FlowVideoOptions
Decoding the Volatility Surface: Advanced Market Prediction Through Options Flow
August 1, 2026·Google Doc·YouTube
Read the 3D implied-volatility surface to separate real trends from bubbles — skew morphology, sticky delta regimes, and market-timing signals.
YouTubeRead Article
Advanced GitLab SDLC for Quantitative Development: CI/CD Best PracticesVideo
Advanced GitLab SDLC for Quantitative Development: CI/CD Best Practices
July 30, 2026·Google Doc·YouTube
A quant engineer's guide to Git and CI/CD: branching strategies, Jupyter workflows, DVC data versioning, and continuous compliance for finance.
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Systemic Fragility & Quantitative Contagion: The 2026 South Korean Equity CrisisVideo
Systemic Fragility & Quantitative Contagion: The 2026 South Korean Equity Crisis
July 27, 2026·Google Doc·YouTube·Podcast
Inside the 2026 Korean equity crisis: retail leverage, single-stock leveraged ETFs, index concentration, and the mechanical deleveraging cascade.
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The Mathematics & Microstructure of the Cboe VIXVideo
The Mathematics & Microstructure of the Cboe VIX
July 24, 2026·Google Doc·YouTube
The VIX beyond the headlines: stochastic variance replication, market microstructure dynamics, the derivatives ecosystem, and the 2024 liquidity shock.
YouTubeRead Article
The SpaceX Public Market Integration: Index Weighting, Structural Drawdown Vulnerabilities, and Systemic Failure Consequences of the $1.77 Trillion Mega-IPOVideo
The SpaceX Public Market Integration: Index Weighting, Structural Drawdown Vulnerabilities, and Systemic Failure Consequences of the $1.77 Trillion Mega-IPO
July 21, 2026·Google Doc·YouTube
Inside the $1.77T SpaceX IPO: Starlink-xAI bundling, index tracking-error risk, 4.2% float scarcity, and its systemic aerospace dependencies.
YouTubeRead Article
Mastering SPX Option Selling Strategies: A Quantitative Guide to Harvesting the Variance Risk PremiumVideoOptions
Mastering SPX Option Selling Strategies: A Quantitative Guide to Harvesting the Variance Risk Premium
July 18, 2026·Google Doc·YouTube
Harvesting the Variance Risk Premium via SPX options: VIX/VXV ratios, Morning VVIX anomalies, and dynamic position sizing for risk-adjusted returns.
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Quantitative Foundations of Long-Short Equity PortfoliosVideo
Quantitative Foundations of Long-Short Equity Portfolios
July 16, 2026·Google Doc·YouTube
The architecture of long-short equity: the Fundamental Law of Active Management, market-neutral vs. 130/30, factor models, and convex optimization.
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Showing 12 of 218 articles

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About SOPHIE

SOPHIE is an open quantitative finance platform designed for students and amateurs to build systematic foundations, and for industry practitioners like SOPHIE Daddy to discuss market news, micro/macro views, and deep-dive research. Every topic connects in-depth articles, YouTube video walkthroughs, primary research papers, and live market tools — and we warmly welcome your topic requests for upcoming blogs and videos.

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Disclaimer: This application is a personal proof of concept created for study and research purposes only. All analysis, suggestions, and content are generated by AI models using publicly available data and tools, and should not be considered as financial advice. Past performance is not indicative of future results. Always conduct your own research and consult with qualified financial professionals before making investment decisions. The app's AI models may have limitations and may not account for all market factors or recent developments. Users are solely responsible for their investment decisions and should understand that all investments involve risk.