Company Events & EarningsExtended setInactiveNew

Activist Pair Revert

Updated eventData needs: mediumlong onlyshort onlylong short

paper

2008

Source

Brav & Jiang (2008) "Hedge Fund Activism, Corporate Governance, and Firm Performance", Journal of Finance 63(4).

Read the paper →

In plain terms

Guarded historical claim; separately named publication hypothesis is evaluated on its own evidence.

How it works

Historical bibliography is provenance only; this legacy implementation does not support the cited return or its named mechanism under current source and execution checks.

Live results

0 times picked on its own · 24 times inside a blend (23 beat the stock) · updated 2026-07-06

This strategy is a frequent ingredient in blends that combine a few strategies on one stock. It has contributed to 24 such blended picks (23 of which beat simply holding the stock). Picking it on its own is only one of the ways it shows up.

How its picks scored vs. buy & hold

Each pick is graded on a recent year it was never tuned on, against simply owning the same stock

Where its edge concentrates

Share of picks in each company-size group that beat buy & hold

How often it trades

Active vs. patient. Bars on the left mean it waits for rare setups; bars on the right mean it trades often

Return vs. buy & hold

How much each pick beat or trailed simply owning the stock over the test year (extreme microcap moves trimmed)

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Data dependencies

Daily prices
Adjusted-close OHLCV for every US-listed ticker; primary price feed.
SEC 13d filings
A data feed this strategy reads, refreshed on its normal schedule.
Sector ETF prices
A data feed this strategy reads, refreshed on its normal schedule.

Expected edge

See the source research for the original effect size; a modern replication on new data may be weaker.

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G13 To D13 Conversion LongCompany Events & Earnings

When a previously-quiet large shareholder switches to declaring activist intent on a stock, the stock tends to outperform for the next 12 months.

Explore Activist Pair Revert on alphactor.ai

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