Crypto: Kalshi tightens the screws against prediction market insiders

Kalshi toughens its rules against insider traders with three new surveillance measures. The platform wants to protect its predictive markets at a time when their weight is increasing in the crypto ecosystem.

Kalshi wants to cut insider advantage

Kalshi goes on the offensive against the risks of insider trading. The American platform is launching a market scoring system, professional verification for certain traders and new reporting tools. The move comes as the rivalry between Polymarket and Kalshi becomes a central topic in crypto prediction markets.

The message is simple. The higher the volumes, the more fragile the trust becomes. Predictive markets are not just about prices or trends. They sometimes touch on political, economic, geopolitical or regulatory events. In these gray areas, private information can quickly become a weapon.

Kalshi therefore wants to act before the orders are executed. This choice is important. Conventional monitoring often occurs after the fact, once the damage is visible. Here, the platform wants to filter risks earlier, before some traders use an information advantage that is difficult to recover.

Three measures to strengthen market integrity

The first measure is based on a risk score assigned to each new market. Kalshi will analyze several factors before listing a contract. Among them: business metrics risk, concentration of possible outcomes, market size, regulatory compatibility, non-traditional insider risks and national security issues.

The second measure concerns employment verification. In markets deemed sensitive, some users will be required to provide professional information before trading. The objective is to detect people who may have access to non-public information. An employee close to an event, an advisor or an actor linked to the result could thus be identified earlier.

The third measure strengthens reporting. Users will be able to alert Kalshi from the markets themselves. These alerts will be sent to a continuously active monitoring team. This mechanism will not replace internal analysis, but it adds a useful layer. In a fast market, a weak signal can sometimes reveal a major anomaly.

Figures that show real pressure

Kalshi claims to have blocked more than 100 trades potentially linked to insiders in the first quarter. The platform also indicates having carried out more than 150 investigations, transmitted more than 20 files to the authorities and taken five disciplinary sanctions. It is therefore not a decorative reform. The problem already exists.

These figures show a tension specific to predictive markets. Their strength comes from their ability to transform information into prices. But this same force becomes dangerous when certain participants possess information inaccessible to the rest of the market. The price then no longer reflects collective anticipation. It reflects an imbalance.

Robert DeNault, head of enforcement at Kalshi, presents these measures as a way to put the platform ahead on the integrity of regulated markets. The issue goes beyond communication. Kalshi must convince traders, regulators and institutional partners that its markets are not becoming a hunting ground for insiders.

Crypto between innovation and reinforced surveillance

This announcement comes in a broader context. Predictive markets are gaining visibility in the crypto universe, particularly around bitcoin, American politics and major macroeconomic scenarios. Their promise is attractive: to measure in real time what traders think about a future event.

But their growth also attracts suspicion. When a market involves a government decision, a corporate result or a geopolitical event, the line between analysis and privileged information becomes fine. This is precisely where Kalshi wants to tighten the bolts.

The platform also takes a stand against Polymarket, its big rival. Both players are seeking to become global benchmarks, but their future will depend as much on their liquidity as on their credibility. In crypto, speed attracts users. Confidence holds them back.

What happens next will therefore be decisive. Kalshi's independent monitoring committee will now publish quarterly reports. These documents will show whether the new barriers actually reduce abuse. After the restrictions imposed on Polymarket and Kalshi in Spain, the signal is clear: predictive markets are entering a more monitored phase. For crypto, this is perhaps less spectacular than a volume record. But this is often how a market begins to mature.