ConvexPi

Operating profitability R&D adjusted

✓ alive
OperProfRDQuality· Accounting data

Revenue (revt) minus cost (cogs) - (administrative expenses (xsga) - R&D expenses (xrd)), all divided by total assets (at) in year t. Replace all variables in the numerator with 0 if they are missing. Exclude if share code is greater 11, market value of equity, BM or total assets are missing, or if SIC code between 6000 and 6999.

IS Sharpe (1963–2015)

0.285

+4.3% p.a.

OOS Sharpe (2016–2024)

0.545

+10.8% p.a.

Sharpe decay

-91.2%

(IS − OOS) / |IS|

IS vol

14.9%

annualized

Cumulative return (last 40 years, monthly)

+2519%
1984-012024-12

Publication details

AuthorsBall et al.
PaperBall et al. (2016)
JournalJournal of Financial Economics
Publication year2016
Original sample1963–2014
IS T-statistic1.84
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