ConvexPi

More Than Words: Quantifying Language to Measure Firms' Fundamentals

Paul C. Tetlock, Maytal Saar‐Tsechansky, Sofus A. Macskassy

The Journal of Finance · 2008 · 2245 citations

nlp_text
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Reference replication on ConvexPi


An open, verified replication of this strategy is maintained at convexpi/replications. It recomputes the strategy from underlying building blocks and scores it out of sample (the McLean & Pontiff test):


PeriodAnnualized Sharpe
In-sample (pre-2008)+0.45
Out-of-sample (≥ 2008)+0.03
Last 10 years+0.03

Verdict: decayed. Run it on live data in Colab · view the code


Community-maintained wiki — anyone can suggest an edit or view its revision history. Not peer-reviewed; verify claims against the original paper.

Wiki last updated: July 1, 2026