Insider trading involves the buying or selling of a company’s stock by individuals who possess non-public, significant information about that company. While the term is frequently linked to illegal actions, there is also a legal dimension. Corporate insiders, including executives, directors, and major shareholders, are obligated to report their trades to regulatory authorities. This reporting offers important insights into their perceptions of the company’s future prospects.
Investors can gain an edge by tracking legal insider transactions. When company insiders frequently buy shares, it often signals confidence in future performance. However, understanding these actions requires context, discipline, and data, as not all insider trades indicate meaningful trends.
In my recent article on Medium, I have analysed thousands of insider trades and published my results.
My findings were very interesting:
- Not all insider trades carry predictive value, context matters, particularly who is trading, the size of trades, and the timing relative to major events.
- Insider buying showed a stronger correlation with future outperformance than insider selling, as sales often reflect diversification or personal liquidity needs rather than lack of confidence.
- Clusters of insider buying (multiple executives buying around the same period) tended to be more reliable than single trades.
- Insider trading, while useful as a signal, should complement rather than replace fundamental or quantitative analysis.
- The overall conclusion: insider transactions contain valuable information, but their effectiveness depends on filtering, context awareness, and integration into a disciplined investment process.
For more details, as well as Python code used, visit my article on Medium.