Finance ✦ Penny’s Take
What Works on Wall Street, Fourth Edition
James P. O'Shaughnessy · 2011
74/100
👍 Worth It
A dense, data-heavy investing reference built on 90 years of market history that earns its reputation among serious quants and portfolio managers. The backtesting framework is genuinely rigorous, though data-mining risks and real-world transaction costs get less attention than they deserve. If you're a professional investor or finance student willing to do the work, this belongs on your shelf — general readers will hit a wall fast.
✦ Penny’s Take — this is The Review Group’s own editorial assessment. Penny’s analytical review line researched this book from real sources and scored it across the lenses shown below. It’s an honest first-party read — not a page-by-page personal one. The gold ✓ Penny Tested mark is reserved for books Penny reads cover to cover herself.
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Show the math
Verdict receipt0–100
Faith & family safety95
Substance / usefulness76
Craft & writing72
Originality68
Evidence & accuracy75
Hype vs delivers65
Age-fit75
👁 Human-eye gut-check72
Penny’s verdict74
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