The Polymarket contract on whether SpaceX Starship Flight Test 13 will launch by July 20 saw a dramatic shift in odds over the past 24 hours, with the YES price plunging 43.5 percentage points from about 49.5% to just 6.0%.
This steep decline in market-implied probability occurred alongside $7K in trading volume, indicating active engagement despite the sharp move. Notably, whale activity diverged from the price trend: large traders increased their net exposure to YES, moving against the downward price momentum.
This flow divergence suggests that while the broader market rapidly reassessed the likelihood of launch, potentially on new information or shifting sentiment, whales maintained or added positions anticipating a different outcome. The contrast between price action and whale flow highlights a split in conviction between retail and large players.
Overall, the combined pattern of a steep price drop amid countervailing whale buying signals a contested outlook on the launch event, reflecting uncertainty and differing interpretations of the underlying prospects within the market.
| Market | Will SpaceX Starship Flight Test 13 launch by July 20? |
|---|---|
| Market ID | 2954494 |
| 24h price change | +43.5 pp |
| YES now (PM Breaking) | 6.0% |
| YES ~24h ago (est.) | 49.5% |
| YES (Polydata overview) | — |
| Whale net flow (24h) | $0 |
| Whale buy / sell (24h) | — / — |
| Unique whales (24h) | — |
| Volume 24h (PM) | $7K |
| Unique traders (Polydata) | — |
Source: Polydata API v3 · /whales/flow + Polymarket Breaking · snapshot 2026-07-19. Data: Polydata API v3. On-chain figures are public. Realized PnL is computed over resolved markets only and excludes open positions, so it is conservative versus the Polymarket UI. This is not investment advice.