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Pead Price Trend Confirmation

Updated dailyData needs: mediumlong onlyshort onlylong short
paper
1989
Source
Bernard-Thomas 1989 JAE / 1990 JFE -- Post-Earnings-Announcement Drift.
Read the paper β†’

In plain terms

PEAD drift is stronger when the post-announcement price move aligns with the earnings surprise direction.

How it works

Post-earnings-announcement drift is stronger and more persistent when the price reaction in the first 1-5 days after the announcement confirms the surprise direction. Price trend confirmation filters out noise from the raw surprise and selects the sub-sample where the market is genuinely underreacting.

No live results for this strategy yet. Charts appear once it has earned a top spot on at least one stock, either on its own or as part of a blend of several strategies.
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Data dependencies

  • Daily prices

    Adjusted-close OHLCV for every US-listed ticker; primary price feed.

  • Earnings history

    A data feed this strategy reads, refreshed on its normal schedule.

Expected edge

Reported return
~2% per quarter (confirmed subsample)
Tested over
1974-1986 (Bernard-Thomas)

PEAD confirmed by price trend delivers roughly 2x the raw PEAD return with fewer reversals.

Related families

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For informational and educational purposes only. Not financial advice. Learn more