Polymarket must build recurring liquidity

This is the core operating challenge for every prediction market, because liquidity is not a brand metric, it is the product itself. A user only stays if they can enter and exit positions with tight spreads and real size on ordinary days, not just during elections or wars. Polymarket has already shown one answer by pushing into sports, where contracts resolve daily and give market makers a repeatable reason to keep quoting prices between major political cycles.

• Polymarket is entirely user supplied on liquidity and uses maker incentives rather than house risk, so thin markets get worse fast. If there are not enough resting orders on both sides, prices gap, fills get harder, and casual users stop coming back. That makes category breadth a market structure issue, not just a content issue.
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• The cleanest comparable is Kalshi. It also saw post election dropoff, then rebuilt engagement through sports, where weekly game schedules create constant contract supply and repeat trading behavior. By late 2025, sports were over 60% of Polymarket open interest, while Kalshi had become even more sports concentrated, showing that recurring categories are what stabilize exchange volume after headline spikes.
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• The broader ecosystem is moving toward aggregation and specialization at the same time. Builders like Dome are matching equivalent markets across venues so a trader can tap pooled depth, while new entrants are launching vertical products for sports, crypto, or local events. That suggests Polymarket does not need every niche to win, but it does need enough repeat categories to remain a default liquidity venue.
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The next phase is a shift from event driven spikes to habit driven trading. Sports is the first proof point, but the bigger prize is building enough repeat activity in crypto, macro, culture, and specialized local markets that Polymarket feels liquid every day of the year. If that happens, liquidity becomes compounding infrastructure rather than a temporary election season phenomenon.