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Market InsightsThursday, September 17, 20263 min readPolymarketFlow Research

Market Intelligence — Thursday, September 17, 2026

Today's market overview

Active prediction markets traded $90.1M in the last 24 hours. Here is what moved, where the largest positions sit, and what resolves next.

What moved

Biggest gain

LoL: Top Esports vs Invictus Gaming (BO5) - LPL Regional Finals Playoffs climbed +29.0 points to 74% on $1.5M of 24-hour volume.

Biggest drop

Fed Decision in October? fell -11.0 points to 53% on $1.1M of 24-hour volume. The market asks: Will there be no change in Fed interest rates after the October 2026 meeting?

5 markets with outcomes still in doubt moved at least 5 points today; markets that simply settled are excluded. The full list is on the movers page, and the screener filters by volume and anomaly score.

Where the biggest money sits

Positions below are valued at the current price. Amounts are share counts; each winning share redeems for $1, so "at risk" is shares times price. Parked capital priced at 95¢ or higher and identical-size positions spread across every outcome of one event are excluded, because those are market-making rather than directional bets.

  • VelvetNova27 holds 1.1M shares of NO on "Clarity Act (H.R.3633) signed into law in 2026?" at 92¢ — about $972.3K at risk, paying $1.1M if it resolves that way.
  • TahitiBob holds 1.0M shares of NO on "Clarity Act (H.R.3633) signed into law in 2026?" at 92¢ — about $955.1K at risk, paying $1.0M if it resolves that way.
  • KatsuManager87 holds 809.3K shares of NO on "Clarity Act (H.R.3633) signed into law in 2026?" at 92¢ — about $747.4K at risk, paying $809.3K if it resolves that way.
  • blahblah344 holds 546.8K shares of NO on "Clarity Act (H.R.3633) signed into law in 2026?" at 92¢ — about $505.0K at risk, paying $546.8K if it resolves that way.
  • Full rankings on the biggest bets page, with wallet history in the whale tracker and new positions in the free alerts feed.

    Resolving in the next seven days

  • Sep 20 — Will AfD win the most seats in the 2026 Berlin state elections? (currently 6%, $2.5M traded)
  • Sep 17 — LoL: Top Esports vs Invictus Gaming (BO5) - LPL Regional Finals Playoffs (currently 74%, $1.6M traded)
  • Sep 22 — US announces end of Iranian blockade by September 21, 2026? (currently 3%, $1.1M traded)
  • The full 31-day view is on the resolution calendar.

    Where to look next

    Live trackers for the questions that draw the most attention: Fed decision odds for cut, hold or hike at each remaining FOMC meeting, and 2026 midterm odds for control of Congress. Perpetual futures data, including funding rates, is on the Perps screener.

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    *Generated from PolymarketFlow's ingested Polymarket data. Prices are market prices shown for information only, not advice. Trading availability depends on your jurisdiction.*