What are population reports, and how do they affect card values?
A population report lists how many copies of a card a grading company has graded, split by grade. Collectors use it to judge scarcity at each grade. It is a useful tool, but it is not the full picture.
What a population report shows
The report shows counts. For a given card, it might show how many copies received each grade from 1 to 10. A low count at a high grade suggests that few top-condition copies have been graded. Each major grading company publishes its own report.
How population affects value
Scarcity is one driver of price. If demand is steady and few copies exist at a grade, the price can be higher. If many copies exist, buyers have more choice. The effect depends on demand. A rare card nobody wants is still not valuable.
Limits of population reports
Population data counts graded cards only. It has several gaps.
- Resubmissions. An owner may resubmit the same card to try for a higher grade. The card can then appear more than once.
- Crossovers. A card may be moved from one grading company's slab to another's. It can then appear in two reports.
- Unreported raw copies. Many copies were never graded. Ungraded cards do not appear in any report.
- Lost or damaged slabs. Some graded cards no longer exist or were removed from slabs. Reports do not always reflect this.
How to use the data well
Treat the population as one input. Check it next to sold prices and demand. Look at how the population changes over time. A rising count at the top grade can weaken scarcity.
FAQ
Does a low population guarantee a high price?
No. Low supply only matters if buyers want the card.
Are population reports exact?
No. They are counts of submitted cards, not of cards that still exist.
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