NegRisk Arbitrage Confirmed Executable; Spain Blocks Polymarket

NegRisk Arbitrage Has a Formal Proof Now — and Spain Just Pulled the Plug

The most important finding today is not a new bot. It is a research paper that gives operators a rigorous, publishable-grade justification for something the best arb desks have suspected for months: negative-risk markets on Polymarket contain *protocol-executable* arbitrage that is structurally distinct from mere theoretical mispricing. If you are running or building an arb bot, read this paper before you do anything else today.

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New Bots: 8 Found, 6 Worth Cloning, 0 Malware

**`arbitrage`** is the lead repo today. It targets NegRisk cyclical relationships in multi-outcome markets — the classic BTC up/down/flat structure — where combined position cost falls below guaranteed payout. Async scanning and fast execution are present in the codebase. This is the most directly actionable bot of the batch given the alpha signal below.

**`polymarket-quant-bot`** applies quantitative modeling to price and volume data, likely a hybrid mean-reversion/momentum signal with position sizing built in. The risk management layer is what makes it worth cloning over the dozen similar repos that lack one.

**`postbot`** is narrow but clever: it scrapes live post counts for a given event, maps those counts to the implied probability the market is pricing, and buys the discrepancy. Useful for social-media-driven markets like follower milestones or platform engagement questions. Low generalizability, high precision in its lane.

**`polymarketfuturesbot`** does high-frequency-ish scalping tied to US Futures price variance. Targets minimum spread conditions. Worth studying for its execution architecture more than its alpha signal, which is thin as futures-linked Polymarket markets have compressed considerably.

**`skalenetwork/agentpit`** is infrastructure, not a trading bot. It gives AI agents a sandboxed environment to interact with Polymarket without real funds. If you are building LLM-driven trading agents this is the fastest scaffold available right now.

**`postbot`** rounds out the six. No malware found across the full batch of eight. Clean week on security.

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Security

No alerts this week. Standard reminder: always run unknown repos in an isolated environment before connecting any wallet or API key. The zero-malware streak will not hold forever.

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Alpha Signals: 3 Research Papers Worth Operationalizing

**Signal 1 — NegRisk executable arbitrage (highest priority).** The paper distinguishes payoff-space no-arbitrage from protocol-executable no-arbitrage. The key insight: in linked binary markets representing mutually exclusive outcomes, the position transformations Polymarket's negative-risk mechanism permits can open executable arb windows that classical no-arbitrage theory would declare closed. This is not academic noise. Pair it with the `arbitrage` bot above and you have a starting point for a systematic scanner.

**Signal 2 — Mis-specified condition sets as tradable inefficiencies.** A second paper uses a probabilistic forest framework to identify markets where the exhaustive/mutually-exclusive requirement on outcome conditions is violated. When conditions are mis-specified, resolution risk is mispriced. This is a lower-frequency signal but the edge per trade is larger when you find one.

**Signal 3 — LLM merger arbitrage.** A forecasting system using long-context reasoning over M&A filings outperforms short-snippet benchmarks on deal outcome prediction. M&A markets on Polymarket are thin but they exist. This paper is a blueprint for a specialized vertical bot.

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Strategy Intelligence

The "Nothing Ever Happens" HN thread (471 points) is worth reading in full. The strategy — always buy No on non-sports markets — is generating real discussion about base rate neglect on Polymarket. The crowd systematically overprices dramatic outcomes. This is not new, but the visibility the thread is generating may compress the edge faster than expected.

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Regulatory Watch

Spain has blocked both Polymarket and Kalshi citing absence of a gambling licence. This is the first EU member state to take direct blocking action rather than issuing warnings. Watch Italy, France, and the Netherlands for follow-on moves. European operators should be auditing their access methods now, not after the next block order lands.

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What to Watch

• Whether the NegRisk arb paper generates a patch or acknowledgment from Polymarket — if they close the position transformation window the `arbitrage` bot's core strategy changes overnight.
• Regulatory contagion from Spain into other EU markets over the next 30 days.
• The Iran missile story and trader threats (1,606 HN points) is becoming a reputational surface area problem for Polymarket. Watch for press-driven regulatory responses in Q4.