At Vega North we write about investments and portfolio construction for readers who care more about process than predictions. We test ideas with open data (FRED, filings, index/factor libraries) and reproducible notebooks, focusing on position sizing, regime-aware risk, and the psychology of holding through drawdowns. Each piece moves from base rates to a simple model—returns, volatility, and correlations—then ends with a decision checklist: what to own, how much, when to rebalance, and what could go wrong. ...