Insider trading means buying or selling a company's shares while having important, non-public information about it that could affect the share price. Trading on such information is illegal because it gives insiders an unfair advantage over ordinary investors.
What insider trading is
Imagine a company's finance team knows that next week's results will be far worse than expected. If one of them sells shares today, before the news is public, they avoid a loss that other shareholders will suffer. That is unfair, and it undermines trust in the market. Insider trading rules exist to make sure everyone trades on the same publicly available information.
How it works in India
India's rules are set by SEBI's Prohibition of Insider Trading Regulations, 2015. The key concept is Unpublished Price Sensitive Information (UPSI): information that is not public and would likely affect the share price, such as financial results, dividends, mergers, acquisitions, major contracts and changes in key management. Insiders include directors, employees and others connected with the company, as well as anyone who receives UPSI, even indirectly.
Companies must close a trading window for designated persons around results and other sensitive events. Insiders must pre-clear trades above certain thresholds and disclose their trades. Insiders who regularly trade can use pre-declared trading plans. Communicating UPSI to others, except for legitimate purposes, is also prohibited.
Penalties
SEBI can impose heavy monetary penalties, order the return of illegal gains, and ban violators from the securities market. Serious cases can also lead to criminal prosecution. SEBI uses market surveillance and data analysis to detect suspicious trading before major announcements.
A simple example
A director learns at a board meeting that the company will announce a large acquisition next week. His friend, whom he tells privately, buys shares the next day. When the announcement lifts the share price, SEBI's surveillance flags unusual buying. Both the director, for sharing UPSI, and the friend, for trading on it, can face action.
Legal trading by insiders
Not all trading by insiders is illegal. Directors and employees can buy or sell their company's shares when the trading window is open, they have no UPSI, and they follow pre-clearance and disclosure rules. These disclosed trades are public, and some investors watch them as one signal of insiders' views.
Why it matters for investors
Insider trading rules protect fairness and confidence in markets. Investors should also be wary of so-called "inside tips" circulating on social media: acting on genuine UPSI is illegal, and most such tips are false.
Front-running and other related offences
A related offence is front-running, where someone with advance knowledge of a large client order, for example at a broker or fund house, trades ahead of it to profit from the expected price move. SEBI also acts against fraudulent and unfair trade practices, such as spreading false information to move prices. Like insider trading, these practices exploit information others do not have and are prohibited.
Protecting yourself
Be sceptical of messages promising guaranteed gains from "inside information". Genuine insiders are prohibited from sharing it, and fraudsters often use such claims to pump up prices before selling.
Common misconceptions
"Only executives can commit insider trading." Anyone trading on UPSI can.
"Insiders can never trade." They can, following the rules.
"Small trades aren't noticed." Surveillance can detect unusual trading of any size.
Frequently asked questions
What is UPSI?
Unpublished price sensitive information that could affect the share price.
What is a trading window?
The period when designated insiders may trade; it closes around sensitive events.
Who regulates insider trading?
SEBI.
Are insider trades disclosed?
Yes, disclosures are filed with the exchanges.
How to use this on PositoAI
SEBI orders, including insider trading cases, can appear as red flags on company pages. Read our guide to SEBI and to corporate announcements.
Summary
Insider trading is trading on unpublished price sensitive information. In India, SEBI's 2015 regulations define UPSI and insiders, require trading window closures, pre-clearance and disclosures, and impose heavy penalties. Insiders can trade legally under these rules, but anyone trading on non-public information breaks the law.