Writing on portfolio risk, factor models and research workflow.

Koyfin is the closest thing to an affordable Bloomberg terminal, but its 2026 plan changes and learning curve have investors shopping around. A fair comparison of the best Koyfin alternatives: TIKR, Simply Wall St, Finviz, Morningstar and STOq Terminal, with pricing verified June 2026.

You've done the decomposition and found factor tilts you don't want. Now what? A practical toolkit for funds and serious investors: six methods for reducing unwanted factor exposure without selling positions you want to keep. With worked examples and cost tradeoffs.

If you can't explain why your portfolio moved 2% yesterday, you aren't managing risk. You're watching it. A practical guide to factor risk models for stock pickers, small funds and advisors: what they measure, why “diversified by ticker” usually isn't, and how factor decomposition directly improves your Sharpe ratio.