Published Research Library
Research Evidence
by Strategy
A curated library of academic and practitioner research organized by strategy type, with key findings, plain-English summaries, and relevance to investment research.
This page is a research library, not an investment recommendation list.
All papers referenced here come from publicly available sources; if you are a rights holder with a copyright concern, please contact us and we will remove the affected paper or link from this library.
How to use this library
findings
Explore academic and practitioner research on each strategy.
limitations
Consider study context, time periods, and real-world constraints.
our work
Learn how the research shapes our analysis and tools.
Featured Research
Key papers that inform our work
These influential studies help shape how we interpret insider activity and integrate it into investment research.
Disclosures of Insider Purchases and the Valuation Implications of Past Earnings Signals
Key finding: Form 4 purchase filings are more informative when information uncertainty and purchase magnitude are greater, and they help investors interpret prior earnings.
Why it matters: Connects insider buying with purchase size, information environment, and earnings context.
Read original paperInformation Content of Insider Trades Before and After the Sarbanes-Oxley Act
Key finding: More timely post-SOX Form 4 disclosure increased market reactions and trading activity around insider-purchase filings.
Why it matters: Establishes why public filing time, rather than the private transaction date, is the relevant starting point for outside investors.
Read original paperInsider Filings as Trading Signals — Does It Pay to Be Fast?
Key finding: Fast post-filing trades produced positive percentage returns, but not scalable positive dollar returns after realistic volume limits—even before transaction costs.
Why it matters: Directly separates a statistical return pattern from an economically practical outside-investor strategy.
Read original paperInsider Trading Research
What published research shows about insider purchases
Key findings from academic and practitioner research, organized by investment insight.
Not all insider purchases are equally informative
Insider history, purchase context, information environment, and economic commitment can materially change what a purchase communicates.
Key point: The literature does not support treating every reported insider purchase as equally informative.
Why it matters: Observable differences can help identify purchases that deserve deeper investigation.
Nuance: Older abnormal-return estimates should not automatically be treated as evidence of current post-SOX tradable alpha.
Public disclosure timing matters
For an outside investor, research should begin when the Form 4 information becomes public—not when the insider originally traded.
Key point: Returns before disclosure reflect information that was not yet available to the public.
Why it matters: Using the transaction date as an entry point can overstate a strategy that relies on public filings.
Nuance: Recent challenge evidence is useful as a timing warning, but should not be treated as the sole answer on insider-purchase profitability.
Purchase magnitude and economic commitment matter
Purchase size is more meaningful when considered relative to ownership, wealth exposure, and the insider's resulting economic risk.
Key point: Relative economic commitment may contain more information than raw purchase dollars alone.
Why it matters: A purchase that materially increases personal exposure may carry different information from a similar-sized routine purchase.
Nuance: Wealth-exposure evidence is promising but remains working-paper evidence rather than an established universal rule.
Primary: Veenman (2012)
Exploratory: Beneish & Markarian (2023 working paper)
Information environment matters
Insider purchases appear more informative in some competitive and information environments than in others.
Key point: Options activity, information uncertainty, analyst coverage, liquidity, and related context can help explain differences in informativeness.
Why it matters: Company and market context can distinguish incremental insider information from activity that prices may already reflect.
Nuance: Evidence about the information mechanism does not replace strict filing-time entry in outside-investor analysis.
Primary: Jeon & Sulaeman (2024 working paper)
Supporting: Veenman (2012); Alldredge & Blank (2019)
Earnings context matters
The earnings setting can affect what insider activity communicates about previously reported and future company performance.
Key point: Insider activity can help investors reassess the persistence and valuation implications of earnings information.
Why it matters: Earnings timing gives an observed purchase a clearer corporate-event context.
Nuance: The current source set provides broader supporting evidence rather than a fully verified purchase-specific lead study for this finding.
Supporting: Veenman (2012); Choi, Faurel & Hillegeist (2023)
Repeated or clustered buying may matter — but evidence is mixed
Repeated purchases and multi-insider clusters are plausible research dimensions, but the evidence is not conclusive.
Key point: Positive studies associate sequences and clustered purchases with stronger subsequent returns.
Why it matters: Repetition and participation may add information beyond one isolated purchase.
Nuance: A recent S&P 500 study finds that significance disappears under dependence-aware inference in its specific 12-week design.
Positive evidence: Biggerstaff, Cicero & Wintoki (2020); Alldredge & Blank (2019)
Challenge: Juranek (2026 working paper) · Frontier: Ahn (2026 working paper)
Statistical alpha is not the same as tradable alpha
A statistically significant return pattern does not automatically become a scalable investment opportunity.
Key point: Filing-time entry, liquidity, available volume, capacity, spreads, slippage, and costs can materially change economic results.
Why it matters: Outside-investor research must evaluate what could realistically be traded after public disclosure.
Nuance: Insider dollar-profit evidence illustrates economic scale, but does not itself test the tradability available to an outside investor.
Primary: Oenschläger & Möllenhoff (2025)
Supporting context: Cziraki & Gider (2021) · Challenge: Özlen & Batumoğlu (2025 independent research)
Explore More
Browse all insider trading papers
Explore the full library of academic and practitioner research on insider trading, with plain-English summaries, key findings, limitations, and links to the original studies.
- Satellite / event-specific: Duong, Pi & Sapp — Betting on My Enemy: Insider Trading Ahead of Hedge Fund 13D Filings
- Background / role evidence: Hvide & Nielsen — Flying Below the Radar: Insider Trading by Executives Below the Top