Your LLM’s alpha might be mere memorization
A new benchmark, Look-Ahead-Bench, shows that LLM-based investment strategies can generate spectacular in-sample alpha that collapses once the test window…
Point-in-Time
Why alternative data trials fail
The reality of selling alt data to quant funds Almost every data provider’s pitch includes a chart that looks like…
Why quants pay more for point-in-time data
When quant investors encounter a new dataset, one of the first questions they ask is whether the data is “point-in-time”…
4 reasons people don’t trust your backtest
Systematic traders, asset allocators, and other asset managers often use backtesting, in the form of models and screens, to build…
Financial data must be made point-in-time
Financial data is sometimes recorded in a bitemporal, or point-in-time, fashion, but this remains a minority practice and is not…
3 reasons why GitHub timestamps shouldn’t be trusted
GitHub has become an indispensable tool for collaborating on software development and version control. With robust features and a huge…