Kalshi and Polymarket ban insider trading as senators look to curb prediction markets

Top prediction market sites usher in new guardrails after senators introduced bill that could limit booming industry

Kalshi and Polymarket, the two biggest prediction market sites, rushed to institute new industry guardrails and add new surveillance tools on Monday after two key senators announced legislation that could severely curtail the industry’s prospects.

Kalshi said it would ban political candidates from trading on their own campaigns, and it would pre-emptively block anyone involved in college or professional sports from trading contracts related to the sports they play or are employed by.

Continue reading...

Why This Matters

The prediction market industry is facing increased scrutiny as two top sites, Kalshi and Polymarket, implement new measures to curb insider trading. This move comes as US senators introduce a bill that could severely limit the industry's growth. The development highlights the growing concern over the regulation of prediction markets.

In Week 13 2026, UK Politics accounted for 71 related article(s), with Other setting the broader headline context. Coverage of UK Politics decreased by 53 article(s) versus the prior week, but remained material in the weekly agenda.

Coverage Snapshot

Week 13 2026 included 71 UK Politics article(s). Leading outlets for this topic included BBC, Independent, Independent Business. Across that cluster, sentiment showed a mostly neutral skew (avg score 0.01).

Key Insights

Primary keywords: kalshi, polymarket, trading, prediction, senators.
Topic focus: UK Politics coverage with positive sentiment.
Source context: reported by Guardian Business.
Published: 2026-03-24.
Published by Guardian Business, a widely cited major outlet.
Date context: published during Week 13 2026, when Other dominated weekly headlines.

Tone & Sentiment

The article tone is classified as positive, driven by the language and emphasis in the summary. The sentiment score of 0.06 indicates the strength of that tone.

Context

The introduction of the bill by US senators marks the latest development in the ongoing debate over the regulation of prediction markets. The Guardian has reported on the growing popularity of prediction markets, with Kalshi and Polymarket leading the charge. Other outlets, such as Bloomberg and CNBC, have also covered the industry's rapid expansion and the concerns surrounding its regulation.

Key Takeaway

In short, this article underscores key movement in UK Politics and explains why it matters now.

Read Original Article

Guardian Business Kalshi and Polymarket ban insider trading as senators look to curb prediction markets