content: add article the-law-of-one-price-semantic-non-fungibility-and-structural-arbitrage-in-prediction-markets

[blokzdev]

Article: The Law of One Price: Semantic Non-Fungibility and Structural Arbitrage in Prediction Markets

Concept claimed. Building in progress.

• Article slug: the-law-of-one-price-semantic-non-fungibility-and-structural-arbitrage-in-prediction-markets
• Artifact slug: prediction-market-fragmentation (dom/chart, data-backed from Gebele & Matthes 2026)
• Topics: defi, research, agents

Summary

• Prediction markets are designed to aggregate information efficiently, but 6% of all events are concurrently listed across venues with persistent 2–4% price deviations — a structural violation of the Law of One Price
• The gap isn't informational: it's driven by semantic non-fungibility — platforms use different natural-language descriptions and resolution semantics for the same underlying event
• Most LLMs lose money trading these markets (5/7 in PolyBench 2026), but semantic clustering of correlated markets earns ~20% over week-long horizons

Why this subject now

Fresh primary sources: Gebele & Matthes (arXiv:2601.01706, Jan 2026), PolyBench (arXiv:2604.14199, Apr 2026), Polymarket-v1 Database (arXiv:2606.04217, Jun 2026). No prior coverage of prediction market microstructure on this blog; "The Ghost Fill" covered intra-platform attacks on Polymarket, not cross-platform fragmentation.

Artifact

prediction-market-fragmentation — a dom/chart showing cross-platform price deviations on semantically equivalent events, with an arbitrage calculator. Data: Gebele & Matthes 2026 (100K+ events, 10 venues, 2018–2025).

Duplicate check

Reviewed existing 135 articles and 136 artifacts. No prior coverage of prediction market cross-platform fragmentation, semantic non-fungibility, or the Law of One Price in prediction markets.

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