Articles on Insider trading

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When senior staff buy their own company’s shares during layoffs, they’re signaling that a turnaround will succeed. AP Photo/Richard Drew

Some kinds of insider trading are perfectly legal – and they offer useful signals about a company’s health

Corporate layoffs cause confusion about a business’s future, but there’s a way for investors and employees alike to see if downsizing could lead to profitability.
People wager on potential Democratic presidential candidates on the predictions market site Polymarket on Feb. 25, 2026. Scott Olson/Getty Images

Prediction markets are opening many new opportunities for unregulated insider trading and unethical bets – in the name of making a game out of politics

The rapidly growing popularity of prediction markets is sparking worries about the markets’ effects on US politics, where campaign staff has bet on its candidate’s electoral performance.
At their best, prediction markets aggregate collective intelligence to weigh the likelihood of future events. Fairfax Media/Getty Images

How polling failures, gambling legalization and political gridlock paved the way for the explosive rise of prediction markets

While media outlets are signing deals with Polymarket and Kalshi for their insights into the wisdom of crowds, gamblers are pouncing on opportunities to wager on geopolitics and celebrity weddings.
The most in-the-know insiders earned three times as much as the typical investor in any given month. Witthaya Prasongsin/Moment via Getty Images

Insider trading − the legal kind − is a lot more profitable if you work for a multinational company

Executives and other high-level inside traders at US companies with global sales earned about three times as much in a month as the average investor, a new study found.
According to the authors, investment banking is a sector particularly prone to unethical behaviour. Timothy A.Clary/AFP

Could better regulation reconcile trading and ethics?

The regulatory apparatus designed to oversee investment banking is structurally flawed. To spawn ethical behaviour within traders will require nothing less than a sector-wide cultural change.
Gordon Gekko of ‘Wall Street’ may be the fictional face of insider trading. Ilona Gaynor/flickr

What’s insider trading and why it’s a big problem

A bipartisan group of US lawmakers is pushing for a ban on active trading by members of Congress following accusations that some of their colleagues may have engaged in insider trading.
Michael Douglas in Wall Street: Money Never Sleeps (2010)

Insider trading has become more subtle

Chief executives have moved on from buying while spreading bad news. They’re buying while spreading uncertainty.
Stockbroker Oliver Curtis leaves at lunchtime with his wife Roxy Jacenko at the Supreme Court of New South Wales in Sydney. David Moir/AAP

Insider trading is greedy, not glamorous, and it hurts us all

It doesn’t matter how much Oliver Curtis and John Hartman stood to gain from insider trading, what matters is what we all lose from market tampering.
Regulators like ASIC are turning to metadata to help make their cases against white collar criminals. Image sourced from Shutterstock.com

White collar crime and metadata: beware of building a new honeypot

Businesses as well as individuals could soon see their metadata retained, making the data storage points even more attractive to criminals.
Screen shot at PM.

Infographic: insider trading in Australia

The typical insider trader is male, aged between 30 and 49, and holds a company director position, according to a new study from researchers at the University of Melbourne. The study analysed all insider…

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