“This used to be called insider trading!” – the rise of online prediction markets

from Brendan O'Connor · host RTÉ Radio 1

Online prediction markets are in the news at the moment with people betting big on particular outcomes in global affairs. Liz Carolan, publisher of TheBriefing.ie, talks Brendan through how sites such as Kalshi and Polymarket differ from traditional gambling, and the new perils they present.

Episode metadata supplied by the publisher feed · Published Mar 21, 2026

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“This used to be called insider trading!” – the rise of online prediction markets

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