Value strategy
Insider Buying / Cluster Buys
When promoters, directors or key management spend their own money buying shares in the open market — especially several at once — it is one of the highest-signal tells available to outside investors.
6–18 months per signalBeginner–Intermediate
Academic grounding from H. Nejat Seyhun's insider-trading research; practiced by special-situations and value investors as a corroborating signal, made trackable in India by SEBI's insider-disclosure regime