Октябрьские достижения: объем торгов Kalshi и Polymarket достиг рекорда в $4,5 млрд Translation: October Achievements: Trading Volume on Kalshi and Polymarket Reaches Record $4.5 Billion

Amid increasing institutional backing, the total monthly trading volume on the prediction platforms Kalshi and Polymarket has soared to $4.5 billion. This marks the second-highest figure on record, according to Artemis.

The previous record was set in November 2024 during the U.S. presidential elections. At that time, fueled by excitement surrounding prediction markets, the volume reached $4.7 billion.

In September, Kalshi captured a significant share of the market—66.59% compared to Polymarket’s 33.41%. This shift was bolstered by a partnership with Robinhood, enabling users to trade directly through the broker’s interface.

Earlier, the prediction platform also secured $300 million in a Series D funding round led by Andreessen Horowitz and Sequoia Capital, raising its valuation to $5 billion.

Polymarket received $2 billion from its parent company, the Intercontinental Exchange (NYSE), resulting in a valuation of $9 billion. Its founder, Shane Copeland, also disclosed two previously unknown funding rounds, including one for $150 million led by Founders Fund.

Norwegian authorities have launched an investigation into Polymarket following suspicious activity ahead of the announcement of the 2025 Nobel Prize winner, as reported by Bloomberg.

According to the publication, several accounts made substantial bets on Venezuelan politician Maria Corina Machado just hours before the official results, collectively earning around $90,000.

Christian Berg Harpviken, the director of the Nobel Institute, confirmed that officials are looking into potential information leaks.

“We are investigating whether someone had access to confidential data and profited from it,” he stated.

This is not the first time Polymarket has faced such challenges. In 2022, the CFTC fined the platform $1.4 million for providing unregistered services. Two years later, it became known that the Department of Justice was investigating the project. The case was closed in 2025.

Currently, the project is preparing to enter the U.S. market. In the summer, Polymarket acquired the regulated derivatives exchange QCEX for $112 million. Recently, the creator of the platform hinted at the launch of a native token called POLY.

It’s worth noting that in October, Polymarket added support for Bitcoin to facilitate account funding.