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Sep 7, 2026daily

Negative-Risk Arbitrage Windows Open on Polymarket Binary Pairs

A new research paper formally proves that Polymarket's mutually exclusive binary markets create executable arbitrage opportunities when linked prices diverge from deterministic payoff identities — and critically, not all violations close before settlement. Operators running market-making or arb strategies on correlated outcome pairs should review exposure today.

Negative-Risk Arb Is Real and Executable — Here's What the Paper Actually Says

The most important signal in today's digest is academic but immediately operational. A newly circulating research paper draws a hard line between *payoff-space* no-arbitrage and *protocol-executable* no-arbitrage on Polymarket. The short version: when two binary markets represent mutually exclusive outcomes — think "Candidate A wins" / "Candidate A does not win" — their prices should satisfy a deterministic identity. When they don't, the paper demonstrates that the gap is sometimes genuinely exploitable before settlement, not just theoretically. The constraint is position transformation: you can't always convert your way out of a mis-structured position in time, so some violations are real free money and some are traps. If you're running `poly-arb` or any spread-monitoring bot on related markets, this framework should be your new pricing bible. The paper gives you the exact conditions under which a detected violation is executable. Read it before your competitors do.

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New Bots This Week: 4 Worth Your Time

**`postbot`** — Event-driven strategy targeting social media post-count markets. Almost certainly polling X/Twitter activity against milestone thresholds and fading or chasing prices as counts approach resolution. Niche but clean logic; worth cloning if you cover influencer or social engagement markets.

**`poly-baseball`** — Statistical model layered over real-time MLB game data. Targets mispriced lines on game winners, run totals, and in-game props. Baseball's volume of games and relatively stable statistical priors make this a reasonable edge market. Clone-worthy if you have a data feed.

**`poly-arb`** — Spread and implied probability scanner across related markets. Directly relevant given today's alpha signal on negative-risk structures. The repo appears to implement basic arb detection; pairing it with the new paper's executable-arb conditions would be a meaningful upgrade.

**`Bobby-Agent-Trader`** — Monitor only. Multi-agent AI system ingesting OKX whale flows and Polymarket smart-money signals for high-conviction trades. Concept is interesting but the architecture is opaque. Watch for forks or derivatives before committing.

**`Polymarket-bot`** — Monitor only. Appears to be a generic client or basic automation scaffold. No distinguishing strategy visible.

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Security: Active Malware Campaign in Progress

This section is not optional reading. Three distinct threats are active right now:

**Polymarket Telegram bot clone malware cluster** — A coordinated campaign distributing trojanized Telegram bots packaged to look like legitimate Polymarket trading tools. Do not install anything sourced from Telegram groups claiming to offer trading automation, signal bots, or API helpers. Treat every unsolicited repo link in any Polymarket Telegram channel as compromised until proven otherwise.

**Confirmed malware template — 460KB repos** — A specific file-size fingerprint (approximately 460KB) has been confirmed as a malware template being cloned across multiple GitHub accounts. If you're evaluating repos and see this size on a thin or recently created account, reject it immediately. Flag it to the community.

**Garbled username spam with inflated star counts** — Accounts with randomized username strings and artificially boosted GitHub stars are seeding repos into search results. Star count is not a trust signal right now. Verify commit history, check for real forks from known operators, and audit any dependency imports manually.

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Strategy Intelligence

The HN item "Nothing Ever Happens" — a bot that always buys No on non-sports markets — hit 471 points and is worth reading beyond the joke. The underlying logic (that most speculative political/macro markets resolve No because dramatic predicted events don't materialize) has documented positive expectancy over long time horizons. It's a real strategy with a real Sharpe.

The Spain regulatory block on Polymarket and Kalshi is operationally relevant if any of your infrastructure routes through Spanish jurisdiction or payment rails.

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What to Watch