
Post-mortem culture: learning from bad calls
A structured investment decision review process turns a losing trade into a transferable lesson — if the review separates decision quality from outcome.

A structured investment decision review process turns a losing trade into a transferable lesson — if the review separates decision quality from outcome.

Machine-learning models ingest more data than any econometric equation, but forex remains one of the hardest forecasting problems in finance.
How AI models approach fixed income forecasting, why traditional models struggle, and how to judge any claimed edge.

Every stock exchange sets its own hours on its local clock. Here is what a trading day is, why sessions differ by city, and how holidays change the schedule.

The numbers in the Pepeto announcement are real claims from a real source. That is not the same as verified evidence.
The wire copy sells timing and a 1,500% ROI. The arithmetic inside it tells a more cautious story.

Compound interest pays you on your past gains. See a simple example, the Rule of 72, and why time matters more than clever picks.

Reported Sharpe ratios inflate with every unreported trial, and the corrections that account for this are arithmetic, not opinion.

The headline number is a household survey statistic with a narrow definition of unemployment. Knowing what sits inside it — and what sits outside — changes how…

A plain-language look at how rising prices are measured, what pushed them up after 2021, and why a little inflation is considered healthy.

A fund's duration number looks abstract until rates move. What it measures, Macaulay versus modified, and where the number stops working.

Out-of-sample scoring is the only published test that approximates live trading, and most papers still manage to overstate it.

Two advisers paid penalties in March 2024 for overstating their use of machine learning, and the orders turn on the gap between claimed and actual model use.

Ten trials are enough to yield an in-sample Sharpe ratio of 1.57 from strategies with zero expected out-of-sample performance. What validation, multiple-testing…

Both rules work when they force trade against drift; the measured differences are smaller than the assumptions either way.

The March 18, 2026 statement kept the range at 3.50 to 3.75 percent, trimmed dissents to one — and added language on geopolitical developments worth reading…

Calibration is the match between stated probabilities and observed frequencies — measurable with Brier scores and reliability diagrams, and distinct from…

The thresholds are precise — 7, 13 and 20 percent on the S&P 500 against the prior close — and so are their limits.