Wisconsin Department of Justice has filed lawsuits against a group of fintech and crypto platforms, accusing them of facilitating illegal sports betting through the offering of so-called “event contracts,” according to complaints submitted April 23 in Dane County.
The defendants include Kalshi, Robinhood, Coinbase, Polymarket and Crypto.com.
Wisconsin Attorney General Josh Kaul is seeking both preliminary and permanent injunctions to block the companies from offering sports-related contracts to users in the state. The lawsuits also ask the court to declare these operations unlawful under Wisconsin gambling law and classify them as a public nuisance.
State Law vs Federal Classification
At the center of the dispute is whether event contracts — financial instruments that pay out based on real-world outcomes — should be treated as regulated derivatives or illegal wagers.
The complaints argue that, despite their labeling, the contracts function as sports betting products.
“Changing the label to ‘event contracts’ does not alter the underlying activity,” the filings state, emphasizing that most forms of commercial gambling remain illegal in Wisconsin outside limited exceptions.
According to the state, the platforms list contracts that “pay out money based on the outcome of real-world events” and generate revenue by charging trading fees to users, including those based in Wisconsin.
The filings single out Kalshi, alleging that sports-related contracts represent nearly 90% of its business and citing estimates that annualized revenue from those products exceeds $1 billion.
Expanding State-Level Enforcement
The Wisconsin action reflects a broader escalation of state-level enforcement efforts against prediction markets offering sports-linked contracts.
In Nevada, a judge extended an order on April 3 blocking Kalshi from providing sports markets to residents, treating them as unlicensed gambling activities. Arizona regulators have also pursued enforcement actions targeting similar offerings.
At the same time, other states have moved to restrict access. Tennessee’s sports betting regulator issued cease-and-desist orders in January to Kalshi, Polymarket and Crypto.com, instructing them to halt sports event contracts for residents, void outstanding wagers and refund affected users.
Federal Agencies Take a Different View
The state-level push contrasts with positions taken by federal authorities.
The Commodity Futures Trading Commission and the US Department of Justice have, in some instances, supported arguments that certain event contracts fall within the federal derivatives framework rather than state gambling statutes.
That divergence has led to a growing legal conflict as courts begin to weigh in.
On April 6, Kalshi secured a favorable appellate ruling that limited New Jersey’s ability to enforce its gambling laws against certain contracts regulated by the CFTC, strengthening the company’s position at the federal level.
Distribution Deals Draw More Platforms Into Scrutiny
The lawsuits also come as platforms like Robinhood and Coinbase expand their exposure to prediction markets through partnerships with Kalshi.
Robinhood has launched a dedicated hub for trading event contracts, processing billions of dollars in volume and allowing users to speculate on outcomes ranging from sports to macroeconomic data and political events.
Coinbase has similarly integrated Kalshi-powered markets, enabling users across all 50 states to trade on real-world outcomes, a move that has attracted scrutiny from regulators, including New York’s attorney general.
As legal challenges multiply, the classification of event contracts — and whether they fall under derivatives law or gambling restrictions — is emerging as a critical issue for the future of prediction markets in the United States.
Analysis: The “Event Contracts” War Is Really About Who Controls Betting — States or Federal Markets
This isn’t about terminology.
It never was.
Call it “event contracts,” call it “prediction markets,” call it whatever sounds clean enough to pass a compliance review — at the core, this is still betting on outcomes.
And states like Wisconsin aren’t buying the rebrand.
I’ve Seen This Framing Before — It’s a Jurisdiction Fight Disguised as a Product Debate
When I read the complaint, the line that stuck wasn’t about fees or user harm.
It was this idea: “changing the label doesn’t change the activity.”
That’s the whole case.
States are saying: this is gambling.
Platforms are saying: no, it’s a financial instrument.
And the Commodity Futures Trading Commission sits in the middle, effectively giving some of these products a regulatory shield.
That’s where things get messy.
Because once something falls under federal derivatives law, state gambling laws start losing teeth.
Kalshi Is the Real Target — Everyone Else Is Collateral
Let’s not pretend this is evenly distributed.
Kalshi is the core of this entire fight.
Wisconsin calling out that nearly 90% of its business comes from sports contracts?
That’s not a side note. That’s the whole model.
Everything else — Robinhood, Coinbase — they’re distribution layers.
They plugged into Kalshi’s backend and gave it scale.
That’s the part regulators hate.
Because it turns a niche prediction market into something that suddenly looks like a nationwide betting network.
The Timing Feels Intentional
Look at when this is happening.
States aren’t acting randomly. This has been building.
Nevada already moved.
Arizona stepped in.
Tennessee sent cease-and-desists.
Now Wisconsin escalates to full lawsuits.
That’s not coincidence. That’s a coordinated pattern of resistance.
States are drawing a line before this model gets too big to contain.
The Federal vs State Split Is Getting Dangerous
Here’s where I think this gets serious.
You’ve got federal agencies — including the US Department of Justice in some arguments — leaning toward classifying these as derivatives.
Meanwhile, states are going the opposite direction.
That’s not just disagreement. That’s a structural conflict.
And when you get that kind of split, one of two things happens:
- Courts settle it cleanly
- Or the market operates in gray zones until something breaks
We’re clearly in option 2 right now.
Robinhood and Coinbase Know Exactly What They’re Doing
This isn’t accidental expansion.
When Robinhood pushes event contracts into a dedicated hub, processing billions in volume — that’s a strategic move.
Same with Coinbase integrating Kalshi markets across all 50 states.
They’re betting on federal protection.
They’re betting that derivatives classification holds.
And if they’re right, they unlock a massive new revenue stream.
If they’re wrong?
They’re suddenly operating unlicensed betting infrastructure across multiple states.
That’s not a small risk.
Let’s Be Honest — This Looks Like Betting
You can dress it up however you want.
Contracts that pay out based on sports outcomes?
Users placing positions on those outcomes?
Platforms taking fees per trade?
That’s economically identical to betting.
The only difference is structure.
Instead of placing a bet against a sportsbook, you’re trading a contract in a market.
But the user intent?
Exactly the same.
The $1 Billion Question
Wisconsin throwing out that $1 billion annualized revenue estimate for Kalshi’s sports contracts — that’s not random.
That’s a signal.
This isn’t niche anymore.
This is scale.
And once something reaches that level, regulators stop debating and start acting.
What This Turns Into If It Escalates
I don’t think this stays at the state level.
If multiple states keep pushing while federal regulators allow these products to operate, this goes up the chain.
Fast.
We’re talking federal courts.
Possibly the Supreme Court.
Because you can’t have 50 different interpretations of the same financial product.
At some point, someone defines it.
The Real Risk Isn’t Legal — It’s Operational
Here’s what most traders miss.
This isn’t just about whether these platforms win or lose legally.
It’s about disruption.
If states start forcing shutdowns:
- Liquidity disappears overnight
- Positions get voided
- Users get refunded or stuck in limbo
We’ve already seen Tennessee push for voiding wagers and refunds.
That’s not theoretical risk. That’s operational chaos.
What I’d Do Here
I wouldn’t treat these markets as stable infrastructure.
Not yet.
Too many moving parts:
- Legal uncertainty
- Jurisdiction conflict
- Dependency on Kalshi’s regulatory status
You’re not just trading outcomes.
You’re trading inside an unresolved legal experiment.
The Only Thing That Matters Now
Who wins the classification war?
Because everything else — volume, adoption, partnerships — depends on that one answer.
If event contracts hold as derivatives, this space explodes.
If they get classified as gambling?
Half these products disappear overnight.
Disclaimer
This article is for informational and educational purposes only and does not constitute financial, investment, trading, or legal advice. Cryptocurrencies, memecoins, and prediction-market positions are highly speculative and involve significant risk, including the potential loss of all capital.
The analysis presented reflects the author’s opinion at the time of writing and is based on publicly available information, on-chain data, and market observations, which may change without notice. No representation or warranty is made regarding accuracy, completeness, or future performance.
Readers are solely responsible for their investment decisions and should conduct their own independent research and consult a qualified financial professional before engaging in any trading or betting activity. The author and publisher hold no responsibility for any financial losses incurred.