Investing
A high backtest Sharpe ratio proves little: what real validation requires
Reported Sharpe ratios inflate with every unreported trial, and the corrections that account for this are arithmetic, not opinion.
Author
Karim Al-Rashid
Karim Al-Rashid tracks company results and property markets, with a habit of looking past the loudest number in the room.
Articles by Karim Al-Rashid
Investing
How many signals were tested before this one worked?
Multiple testing turns luck into apparent skill. What the correction procedures control, the hurdles the replication literature settled on, and what a corrected…
Business News
AI-washing is not a model failure: what the SEC's enforcement actually measured
The SEC's first AI-washing settlements penalized false marketing about artificial intelligence, not a model's forecasting accuracy — a distinction that matters…