The chances of SpaceX Starship Flight Test 13 launching by July 17 dropped sharply on Polymarket, with the YES price falling 31.9 percentage points over 24 hours to just 0.05%, down from an estimated 32.0% a day earlier.
Despite this steep decline in market-implied probability, whale activity diverged from the price move. Across 56 unique whales, net flow into YES contracts totaled $18K, fueled by $33K in whale buy volume against $15K in sell volume. This contrasts with the overall market volume of $38K in the same period, suggesting whales accounted for a significant portion of trading but moved counter to the prevailing price direction.
With a lifetime market volume of $54K and 172 unique traders, the contract has attracted moderate participation. The divergence between whale buying and the collapsing odds indicates a split in sentiment between large traders and the broader market consensus.
This mismatch signals uncertainty among informed participants about the likelihood of a timely launch. While the market price reflects a near-certain delay past July 17, whale buying suggests some remain positioned for the event to occur on schedule, highlighting ongoing debate within the prediction market.
| Market | Will SpaceX Starship Flight Test 13 launch by July 17? |
|---|---|
| Market ID | 2911983 |
| 24h price change | +31.9 pp |
| YES now (PM Breaking) | 0.05% |
| YES ~24h ago (est.) | 32.0% |
| YES (Polydata overview) | 0.05% |
| Whale net flow (24h) | $18K |
| Whale buy / sell (24h) | $33K / $15K |
| Unique whales (24h) | 56 |
| Volume 24h (PM) | $38K |
| Unique traders (Polydata) | 172 |
Source: Polydata API v3 · /whales/flow + Polymarket Breaking · snapshot 2026-07-18. 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.