A banner for the prediction market platform Kalshi hangs from a building on April 1.
Allison Robbert/Associated Press
hide caption
toggle caption
Allison Robbert/Associated Press
Kalshi says it has blocked "dozens" of trades from campaign insiders, but experts say the company's approach leaves lots of potential loopholes. NPR has found at least one trade that slipped through.
A banner for the prediction market platform Kalshi hangs from a building on April 1.
Allison Robbert/Associated Press
hide caption
toggle caption
Allison Robbert/Associated Press

Penalties come amid calls for greater oversight; company pledges to proactively police 'insider trading' on platforms.

CNBC reached out to 50 companies about what are their trading policies for employees on prediction markets. A handful had an…

The rise of prediction markets has raised concerns about insider trading, in which a wager on an event is placed by bettors who…

The prediction market has banned Mark Moran, Ezekiel Enriquez, and Matt Klein from using the platform for at least five years.

The prediction market took action against a handful of congressional candidates: Ezekiel Enriquez (a Republican running in…

The prediction market has added several new guardrails to weed out insider trading and bad actors.