Imagine a portfolio that does not just sit there absorbing market shocks, but constantly adjusts its positions based on the collective intuition of thousands of strangers betting on whether the FDA will approve a new drug or if the Fed will cut rates by a quarter point. That is the bet behind the latest integration between Public and Kalshi, a partnership that turns the speculative energy of prediction markets into a real-time signal layer for retail investment.
On September 24, 2026, Public launched AI Agents for Prediction Markets, bridging high-stakes event betting and traditional portfolio management. The mechanism is straightforward, at least in theory. Users can deploy AI agents to trade event contracts directly on Kalshi, a CFTC-regulated exchange that saw $39.7 billion in volume in the year ending February 2026. But the more ambitious play is using those markets as a trigger. If the probability of an earnings miss climbs above 60%, your agent can automatically execute a put option. If the odds of an FDA approval cross the 75% threshold, it can trigger a $5,000 buy order. Automation, but with a speculative pulse.
Leif Abraham, Public’s Co-CEO and Co-Founder, frames this as a tool for the active investor: “Public is built for investors who take an active hand in constructing their portfolios, and our AI agents let them automate those strategies. Prediction markets give those agents a new input: real-world events.”
It is a compelling pitch, provided you trust the signal. Whether those signals are actually predictive or just noise wrapped in a polished interface is a question the market will answer in due time.
This launch is the latest chapter in a familiar story: the relentless march of infrastructure before regulation. We have seen this pattern play out across the financial landscape this week. First came settlement rails with Visa, SoFi, and Mastercard. Then distribution rails via Circle and Binance. Then agent-commerce rails through Meta and Muse. Now, prediction-market rails. The industry is building the plumbing for a new financial architecture while the regulatory framework is still being sketched on a napkin.
The Kalshi partnership is a particularly revealing edge case. While Kalshi holds federal status as a CFTC-regulated Designated Contract Market, it is currently mired in active litigation across roughly a dozen states. Ohio has levied a $5 million fine. The courts are producing conflicting appellate rulings. With no Supreme Court guidance yet, the legal status of these markets remains, to put it mildly, a moving target. The CFTC issued a proposed rule on prediction markets in June 2026, but it is not finalized. It is a classic case of firms deploying infrastructure at scale while the guardrails are still being welded together.
Public is also eager to claim the title of the “world’s first agentic brokerage,” a designation they have been pushing since launching their Agents product on March 31, 2026. It is a bold claim, though one that is predictably contested. TrueNorth, founded by a former Public executive, makes the same assertion. The broader landscape is crowded with others staking territory: Robinhood is experimenting with Agentic Accounts that connect to third-party agents, and eToro is pushing Agent Portfolios. Everyone wants to be first to define the future of the brokerage, even if the definition is still being written by the engineers.
The categories Public is exposing through Kalshi are broad: crypto, commodities, climate, economics, corporate events, markets, indices, tech and science, and politics and elections. Each one is designed to give investors another way to assess potential risks and opportunities relevant to their portfolios — whether that means evaluating the potential impact of a Federal Reserve rate cut, anticipating bitcoin price movements, or assessing the likelihood of a corporate event.
The implications are significant. By embedding prediction-market signals directly into automated stock and bond trading, Public is attempting to normalize the use of speculative event data in everyday portfolio management. It is a shift from passive holding to active, event-driven reaction. Whether this leads to more efficient markets or simply more efficient ways to lose money is, of course, the open question.
For now, the infrastructure is live, the agents are active, and the regulatory reality is lagging a few steps behind. The pattern we have been tracking all week remains consistent: the rails are being laid before the rules are written. Public and Kalshi are just the latest proof that in the race between infrastructure and regulation, the builders are winning.