Polymarket Acquires Brahma to Fix Liquidity Gaps as Valuation Hits $20 Billion and MLB Deal Deepens Regulatory Spotlight

DeFi Integration, Market Imbalance, and Legal Scrutiny Converge as Prediction Platform Expands

TL;DR

• Polymarket acquired Brahma to address liquidity imbalance, integrating a DeFi platform that processed over $1 billion in transactions.
• The platform’s valuation stands around $20 billion, while market share dropped from over 61% to about 32% amid rising competition.
• A new MLB partnership and regulatory scrutiny, including insider trading concerns and CFTC coordination, place the platform under increased oversight.

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Polymarket has acquired decentralized finance startup Brahma as part of a broader effort to resolve structural inefficiencies in its prediction market platform, particularly uneven liquidity distribution across contracts, according to reports released March 19, 2026. The deal, whose financial terms were not disclosed, brings a company founded in 2021 with more than $1 billion in processed transaction volume fully into Polymarket’s ecosystem, with Brahma ceasing external operations and shutting down its existing products within approximately 30 days.

Chief executive Shayne Coplan described the technical scope of the integration, stating, “Building reliable infrastructure across blockchain networks and traditional financial rails is hard—there are no shortcuts.” Brahma’s previous offerings included strategy vaults, smart accounts, and a crypto-linked payment card known as Swype.fun, all of which are set to be phased out as the team transitions to improving wallet creation, deposits, token conversion, and redemption systems inside Polymarket’s platform.

The acquisition targets a persistent imbalance where high-profile markets attract significant capital while smaller contracts struggle to sustain activity, leading to slippage and unreliable pricing. Internal platform data shows a divergence between steadily rising open interest and inconsistent trading volumes, with some niche markets lacking sufficient participation to maintain efficient price discovery.

Polymarket’s valuation has reached approximately $20 billion, following rapid growth tied to heightened activity during the 2024 U.S. election cycle. That surge in user engagement later subsided, with the company’s market share declining from over 61% to about 32% as activity normalized. Rival platform Kalshi gained ground during the same period, capturing about 66% of the market and processing nearly $1 billion in weekly trading volume.

Expansion efforts have extended beyond the Brahma deal, including acquisitions of developer tooling startup Dome and an executive recruitment firm known as Lunch, alongside partnerships with artificial intelligence and data companies to strengthen sports integrity systems. Polymarket is also reportedly exploring the launch of a native token, referred to as POLY, with a potential release targeted for 2026.

A separate development announced March 19, 2026 established an official partnership between Polymarket and Major League Baseball, granting the platform rights to use league branding and integrate official data provided through Sportradar. The agreement allows prediction markets to be incorporated into fan engagement products while enabling access to league-controlled datasets.

Major League Baseball concurrently entered into a memorandum of understanding with the Commodity Futures Trading Commission to facilitate the sharing of confidential information and coordinate efforts to monitor market integrity. Commissioner Rob Manfred said, “Protecting the integrity of the game… is our top priority… while providing fan engagement opportunities.”

Prediction markets continue to face regulatory ambiguity as authorities debate whether such platforms fall under financial derivatives oversight or state-level gambling laws. The Commodity Futures Trading Commission has increased scrutiny of event-based contracts, particularly those tied to sports outcomes, while industry groups such as the American Gaming Association have argued that these platforms may bypass existing gambling regulations.

Legal tensions have escalated across multiple jurisdictions, with some states pursuing enforcement actions against competing platforms, including criminal charges filed in Arizona. Authorities have raised concerns about manipulation risks and the potential for misuse of non-public information in thinly traded or niche markets.

Polymarket has also faced scrutiny over controversial contracts tied to geopolitical events, including betting activity related to Iran, alongside allegations of insider trading and attempts to influence outcomes through external pressure. One reported incident involved users attempting to pressure a journalist to alter coverage tied to a market outcome, after which the platform banned the individuals involved and condemned the conduct.

The platform operates on blockchain infrastructure using USDC-denominated trades, allowing users to buy and sell shares representing probabilities of real-world outcomes. Partnerships across sports leagues including MLB, NHL, MLS, and UFC have expanded its reach, while ongoing debates around legality and classification continue across different jurisdictions.

This article has been refined and enhanced by ChatGPT.