What is insider trading?
Arihant · 15 Oct 2026 · 2 min read

Insider trading means buying or selling shares using important information that the public doesn’t have yet.Key pointsInsider: anyone with access to secret company information, such as directors, employees, auditors, lawyers, or even friends and family they tell.UPSI (Unpublished Price Sensitive Information): news that can move the share price once it’s public, for example:
- Quarterly results
- mergers or acquisitions
- dividends or bonus issues
- big orders or contracts
- changes in top management
Simple example: a manager learns their company will be bought at a premium, buys shares before the news, and sells after the price jumps. That is insider trading.
The law and the penalties
India: SEBI (Prohibition of Insider Trading) Regulations, 2015
- You must not trade while you hold UPSI.
- You must not pass UPSI to anyone else (“tipping”).
- Trading window: insiders can’t trade during closure periods, such as before results.
- Insiders must report their trades above set limits.
- Penalty (SEBI Act, Section 15G): up to ₹25 crore or 3× the profit made, whichever is higher. Criminal cases can also lead to jail time of up to 10 years.
USA: Securities Exchange Act, 1934
- The SEC and the Department of Justice go after insider trading.
- Penalties include civil fines of up to 3× the profit, plus prison.
Legal vs. illegal insider trading
Not every trade by an insider is a crime.Legal
- Directors and employees buying or selling shares after the news is public
- Trades outside the trading window (not near results or big announcements)
- Trades under a pre-approved Trading Plan (allowed under SEBI PIT Regulations)
- Trades disclosed to the company and the stock exchange on time
Illegal
- Trading while holding UPSI
- Tipping: passing secret information to a friend or relative who then trades
- Trading through family members or someone else’s account (a “front”)
- Getting others to trade on your behalf
How SEBI catches it
- Watches for unusual volume or price jumps just before big news
- Tracks call records, emails, and WhatsApp chats
- Links trades to PAN, family members, and related accounts
- Its systems flag suspicious patterns automatically
Real cases and how to stay safe
Famous cases (USA)Raj Rajaratnam (Galleon Group): one of the biggest insider trading cases in US history; 11 years in prison (2011)Rajat Gupta (former McKinsey head and Goldman Sachs board member): passed boardroom information to Rajaratnam; 2 years in prison (2012)
How to stay safe
- Invest on public information only: annual reports, exchange filings, company announcements
- Ignore “sure-shot tips” on WhatsApp, Telegram or social media. Acting on them can make you liable
- If you work at a listed company, follow its code of conduct and trading window rules
- Disclose your trades when the rules require it
- When in doubt, don’t trade. Ask your compliance officer or a CA first
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