Prediction Market Whale Activity
Track where the biggest money is flowing. High-volume markets, deep liquidity pools, and suddenly surging activity signal where informed traders and whales are positioning.
Updated Mar 31, 2026 at 07:00 UTC
Biggest Volume Moves LIVE
Markets with the highest 24-hour trading volume — where the most capital is actively deployed right now. High 24h volume often indicates whales or institutional traders taking large positions.
| Market | Leading Odds | 24h Volume | Total Volume |
|---|---|---|---|
| 2026 FIFA World Cup Winner | 16% | $11.6M | $437.3M |
| Democratic Presidential Nominee 2028 | 24% | $10.8M | $947.4M |
| Republican Presidential Nominee 2028 | 49% | $7.0M | $499.0M |
| Will Crude Oil (CL) hit__ by end of March? | 100% | $6.3M | $79.9M |
| Pistons vs. Thunder | 100% | $6.0M | $6.3M |
| Celtics vs. Hawks | 100% | $5.8M | $5.9M |
| US forces enter Iran by..? | 70% | $5.8M | $58.0M |
| 76ers vs. Heat | 100% | $5.6M | $5.9M |
| Presidential Election Winner 2028 | 18% | $5.2M | $476.9M |
| Wizards vs. Lakers | 100% | $3.8M | $3.9M |
| US x Iran ceasefire by...? | 74% | $3.7M | $65.7M |
| Netanyahu out by...? | 42% | $3.3M | $91.0M |
| Bulls vs. Spurs | 100% | $3.2M | $3.2M |
| Suns vs. Grizzlies | 100% | $2.9M | $2.9M |
| Timberwolves vs. Mavericks | 100% | $2.7M | $2.7M |
Liquidity Leaders
Markets with the deepest liquidity pools — where large trades can be placed without significantly moving the price. Deep liquidity attracts sophisticated traders and reduces slippage on big positions.
| Market | Leading Odds | 24h Volume | Total Volume | Liquidity |
|---|---|---|---|---|
| 2026 FIFA World Cup Winner | 16% | $11.6M | $437.3M | $48.5M |
| Democratic Presidential Nominee 2028 | 24% | $10.8M | $947.4M | $39.2M |
| Presidential Election Winner 2028 | 18% | $5.2M | $476.9M | $28.6M |
| Republican Presidential Nominee 2028 | 49% | $7.0M | $499.0M | $27.7M |
| F1 Drivers' Champion | 48% | $2.6M | $69.9M | $10.6M |
| Will Crude Oil (CL) hit__ by end of March? | 100% | $6.3M | $79.9M | $8.7M |
| NFL Champion 2027 | 12% | $62K | $9.8M | $8.4M |
| Eurovision Winner 2026 | 36% | $2.5M | $52.5M | $8.1M |
| 2026 NBA Champion | 38% | $2.6M | $212.6M | $8.0M |
| What price will Bitcoin hit in March? | 100% | $2.0M | $98.3M | $5.3M |
| Augusta National Invitational - Winner | 16% | $1.0M | $62.2M | $4.8M |
| UEFA Champions League Winner | 26% | $330K | $221.5M | $4.8M |
| English Premier League Winner | 88% | $198K | $312.7M | $4.6M |
| Fed decision in April? | 98% | $2.5M | $40.2M | $4.2M |
| 2026 NHL Stanley Cup Champion | 20% | $308K | $59.6M | $4.1M |
New High-Activity Markets SURGING
Markets where 24-hour volume exceeds 50% of total lifetime volume. These are the markets experiencing the most sudden, concentrated activity — a strong signal of breaking news or aggressive new positions.
| Market | Leading Odds | 24h Volume | Total Volume | 24h/Total |
|---|---|---|---|---|
| Pistons vs. Thunder | 100% | $6.0M | $6.3M | 96% |
| Celtics vs. Hawks | 100% | $5.8M | $5.9M | 97% |
| 76ers vs. Heat | 100% | $5.6M | $5.9M | 95% |
| Wizards vs. Lakers | 100% | $3.8M | $3.9M | 98% |
| Bulls vs. Spurs | 100% | $3.2M | $3.2M | 97% |
| Suns vs. Grizzlies | 100% | $2.9M | $2.9M | 99% |
| Timberwolves vs. Mavericks | 100% | $2.7M | $2.7M | 97% |
| LoL: Natus Vincere vs SK Gaming (BO3) - LEC Group Stage | 100% | $2.6M | $2.7M | 99% |
| Maple Leafs vs. Ducks | 100% | $2.5M | $2.5M | 98% |
| Cavaliers vs. Jazz | 100% | $2.4M | $2.4M | 98% |
| Bitcoin above ___ on March 31? | 100% | $2.1M | $2.6M | 82% |
| Indian Premier League: Rajasthan Royals vs Chennai Supe | 100% | $1.6M | $1.6M | 98% |
| LoL: Team Heretics vs Team Vitality (BO3) - LEC Group S | 100% | $1.5M | $1.5M | 99% |
| LoL: Anyone's Legend vs Top Esports (BO3) - Esports Wor | 100% | $1.2M | $1.3M | 96% |
| Penguins vs. Islanders | 100% | $1.1M | $1.1M | 97% |
What is whale activity in prediction markets?
In prediction markets, "whales" are large traders who deploy significant capital — often tens or hundreds of thousands of dollars — into a single market. Their activity is visible through spikes in trading volume, sudden shifts in liquidity, and price movements that outpace the news cycle.
Tracking prediction market whales matters because large traders often have superior information or analytical edge. A sudden surge in Polymarket big trades on a specific market can indicate that informed participants are pricing in something the broader market hasn't yet absorbed. This is why prediction market volume — especially 24h volume relative to total lifetime volume — is one of the most actionable signals available to traders.
PredScope surfaces three types of whale signals: raw 24h volume leaders, liquidity depth (which attracts and accommodates large positions), and surge ratio (markets where recent activity is disproportionately large vs. historical norms). Together, these paint a picture of where sophisticated capital is flowing in real time.
Frequently Asked Questions
What is a prediction market whale?
A prediction market whale is a large trader who places significant capital into a single market, often influencing odds. On Polymarket, whales can move prices by deploying tens or hundreds of thousands of dollars. Tracking whale activity — high 24h volume relative to total volume or large liquidity positions — can signal where informed money is flowing.
How do big trades affect prediction market odds?
Large trades push prices in the direction of the bet because prediction markets use a constant product market maker (CPMM). A whale buying Yes shares drives the Yes price up, signaling higher perceived probability. These moves are often followed by other traders, amplifying the shift. Markets with deep liquidity are more resistant to manipulation than thin markets.
What does high 24h volume versus total volume mean for a market?
When a market's 24-hour volume exceeds 50% of its total lifetime volume, it indicates a sudden surge of new activity — often triggered by breaking news, a major event outcome, or a large position being taken. This ratio is a key signal that whales or informed traders are entering a market aggressively, and the odds may be repricing rapidly.
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