Inventory Spike Alerts — New Sports Card Listings Rising — May 18, 2026
Fresh inventory is flooding select markets today, with Jordan Love cards showing a 109% new supply spike while prices hold flat, and Nolan Ryan inventory surging 81% as prices retreat 14%. The data suggests sellers are capitalizing on recent strength in Love’s market while Ryan’s vintage supply increase may signal profit-taking ahead of potential softness.
Today’s inventory alerts reveal a concerning pattern for several high-profile players experiencing massive supply influxes despite mixed price signals. Jordan Love’s 109% inventory spike with flat pricing suggests sellers are testing market depth, while Nolan Ryan’s 81% supply increase paired with a 14% price decline indicates potential overvaluation correction among vintage collectors. The outlier worth monitoring is Shai Gilgeous-Alexander, whose 51% inventory surge coinciding with 26% price gains creates an unusual dynamic that historically signals either institutional dumping into retail strength or preparation for a significant market move.
| Player | New Inventory | Price Change | Heat Score |
|---|---|---|---|
| Jordan Love | +109.4% | +0.0% | 44 |
| Nolan Ryan | +81.3% | -14.3% | 53 |
| Aaron Judge | +53.9% | -5.5% | 59 |
| Shai Gilgeous-Alexander | +50.7% | +25.7% | 86 |
| Walter Payton | +30.2% | -5.5% | 43 |
| Jalen Hurts | +26.8% | -0.3% | 52 |
| Caitlin Clark | +24.2% | -5.6% | 53 |
| Shohei Ohtani | +18.1% | +2.0% | 56 |
| Josh Allen | +16.2% | +4.2% | 69 |
| Willie Mays | +16.1% | +1.4% | 67 |
| Paul Skenes | +14.1% | -8.5% | 49 |
| Wilt Chamberlain | +11.1% | -8.0% | 47 |
Featured players: Shai Gilgeous-Alexander, Giannis Antetokounmpo, Justin Jefferson