form13f
The Druckenmiller Doctrine: Mastering Asymmetric Returns
Stanley Druckenmiller's four-pillar framework — macro-centric analysis, concentrated conviction, asymmetric risk management, and psychological discipline — illustrated through Breaking the Bank of England and the 2000 dot-com meltdown.
Unlocking Institutional Portfolios: A Strategic Guide to SEC Form 13F
How to use Form 13F for idea generation, not portfolio replication — the $100M filing threshold, critical limitations (45-day lag, no shorts), and Q1 2025 snapshots from Buffett, Druckenmiller, Klarman, Ackman, Burry, Li Lu, and Pabrai.
Druckenmiller's Q2 2025 Playbook: AI, America, and Aggressive Conviction
Duquesne Family Office's Q2 2025 13F shows total value up 33% to $4.07B with 69 holdings, driven by AI value-chain infrastructure bets, broad U.S. bullishness via SPY/IWM calls, and high-stakes healthcare positions like Insmed ahead of an FDA approval.
The Cassandra Pivot: Reading Michael Burry's Q2 2025 13F
Scion Asset Management's Q2 2025 13F shows a complete reversal from Q1's all-puts bearish 'fortress' to a concentrated book of bullish call options on beaten-down leaders like UnitedHealth, Lululemon, and Estée Lauder.
Political Alpha: Tracking Congressional Stock Trading
Nancy Pelosi's market-beating portfolio and other top congressional traders, the STOCK Act's disclosure flaws, a four-step framework for tracking political trades, and the legislative/crowded-trade risks of following them.
Reading a 13F: Michael Burry's Circular Financing Thesis Against AI
How to read Scion Asset Management's Q3 2025 13F pivot from a bullish call-heavy portfolio to a concentrated short against Nvidia and Palantir, the 'circular financing' thesis behind it, and why 13F filings are always a lagging signal.
Berkshire's Succession: Greg Abel, Insurance Float, and the Conglomerate Model
How Berkshire Hathaway's new triumvirate leadership (Abel, Combs, Weschler) and its ~$175B insurance float set it apart from a mutual fund, plus the bull/bear case on the stock following Buffett's transition to Chairman.