The Signal

The CFTC is telegraphing a shift from case-by-case fights to formal rulemaking for event contracts—and that’s a direct threat to the industry’s current “gray-zone by design” growth loop. Speaking at Milken, CFTC Chair Michael Selig said the agency is planning to write rules and issue guidance for prediction markets, explicitly signaling it’s not limiting its strategy to courtroom battles with states. Source: The Block.

If the CFTC actually moves, the near-term winners aren’t “who lists the hottest market first,” but who can survive a definitional regime: what counts as an event contract, what counts as gaming, what categories are per se prohibited, and what surveillance/AML standards attach. The rulemaking threat lands as Kalshi is taking heat for contract design and Polymarket is printing record volume in the exact “sensitive” categories regulators cite when arguing for tighter boundaries.

The Mechanism

• Rulemaking is leverage over the entire stack, not just one platform. Enforcement actions and state preemption suits are platform-specific; CFTC rules would set category-level constraints (or safe harbors) that flow downstream to listing committees, market makers, banks, and app distribution.

• The biggest delta is definitional: “event contract” vs “gaming” vs “public interest.” Expect the CFTC to harden tests around “economic purpose,” “susceptibility to manipulation,” and “public interest” framing—standards that can be used to bless rate/crypto/commodity-adjacent contracts while restricting violence/death/war-adjacent ones.

• Regulated venues get a potential moat—but also a compliance bill. Kalshi (as a CFTC-regulated venue) benefits if rules tighten around who can legally offer real-money event contracts in the U.S. But bright-line rules also raise costs: surveillance, attestations around market integrity, and more formalized product approval workflows.

• Offshore liquidity won’t disappear; it will re-route. If U.S. rules narrow permissible categories, the “hot” volume (geopolitics, conflict, assassination-adjacent) likely concentrates further offshore—while onshore platforms pivot toward “sanitized” macro/sports-like event structures with clearer settlement sources.

• Market makers and data partners will care more than CT does. Formal rules reduce counterparty ambiguity—unlocking institutional participation if the rulebook is permissive. Conversely, strict rules could strand investment in onshore market-making infrastructure if listing scope shrinks.

• This is also a distribution story. Payment processors, banks, and app platforms tend to treat “pending rulemaking” as a risk flag. A clear CFTC framework can either de-risk partnerships—or freeze them if the agency signals impending restrictions.

The Landscape

Market position: Polymarket’s growth continues to be defined by break-news politics/geopolitics spikes (including the recent single-day notional record), while Kalshi is working the opposite angle: regulated legitimacy + contract governance, even when it has to spend on reputational repair (fee reimbursements) to keep that positioning intact. The competitive question is whether “regulated” becomes a growth advantage (distribution, partnerships, institutional flow) or a speed handicap (slower listings, narrower categories) as the market’s attention economy rewards immediacy.

Regulatory environment: States are still trying to pull prediction markets into gambling frameworks, but the CFTC signaling rulemaking is the more consequential pivot because it suggests the agency wants to affirmatively define its jurisdiction rather than just defend it. At the same time, an organized push for state crackdowns is forming (political operators staffing up and messaging hard), increasing the odds that CFTC rules—if they arrive—will be shaped as much by headline-risk categories as by market-structure theory. Sources: The Hill, WIRED.

Key Data

• Regulatory signal: CFTC Chair Selig says rulemaking + guidance is coming for prediction markets/event contracts, beyond litigation with states. The Block
• Volume benchmark (context for scrutiny): Polymarket reported $478M single-day notional volume; $220M from politics in that day’s mix. Yahoo Finance
• Governance cost (regulated venue): Kalshi committed to reimburse all fees on the controversial Khamenei-related market after backlash. The Block

What’s Next

Watch for the CFTC to preview how it intends to draw lines—either via an ANPRM (early-stage concept release) or targeted guidance that effectively creates a whitelist/blacklist by category. The industry catalyst isn’t the next viral contract; it’s whether platforms start preemptively narrowing listings, upgrading surveillance, and tightening settlement-source standards before rules drop—because once rulemaking is public, counterparties (market makers, banking rails, enterprise customers) will demand “rulebook-ready” compliance posture rather than platform-by-platform assurances.

Predict This covers the evolution of prediction markets — platforms, regulation, volume, and methodology. For questions or tips: reply to this email.

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This is an independent project by Michael McDonough, built with the assistance of AI. Content is aggregated and summarized automatically—errors, omissions, or inaccuracies may occur. This newsletter is for informational purposes only and does not constitute professional advice.