Observatory
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Hot sets · PSA 9
Card sets ranked by median return across eligible tracked cards.
Eligible PSA 9 cards: 2 of 114 tracked.Sep 4, 2026 to Oct 4, 2026
Rising 0Falling 2Flat 00 shown
No groups with gains
Browse cardsHow these reports work
Return is ((end price - start price) / start price) × 100. Grades are separate cohorts and never mixed. Cards with invalid, stale or missing start or end prices are excluded; prices are not carried forward. Group rankings use the median of equal-weight card returns. Opening a report reads only stored data and makes no provider request.