The Short Answer
- The PSA population report (psacard.com/pop) is a public database showing how many copies of every card PSA has ever graded, broken down by grade from PSA 1 to PSA 10.
- Gem rate = (PSA 10 count / total graded) x 100. Under 10% = real condition scarcity. Under 5% = major pricing factor. Under 1% = trophy asset regardless of raw supply.
- Pop reports count submissions, not unique cards — cracked and resubmitted cards appear more than once, inflating the count slightly.
- A card with 500 PSA 10s out of 1,000 total graded (50% gem rate) is very different from 500 PSA 10s out of 100,000 graded (0.5% gem rate). The gem rate is what separates them.
- Pop growth velocity matters: if total graded is growing more than 5% per month, the gem rate is actively degrading. Under 1% per month means the population is stable.
- For PSA 9s, always check the "higher count" (how many PSA 10s exist above your 9). Under 50 higher-count means the 9 is effectively a top-pop asset. Over 5,000 means the 9 is a commodity.
- Cross-reference pop data with sales data (eBay sold comps, CardLadder, 130point) for a complete market picture. Pop data tells you supply; sales data tells you demand.
What Is a PSA Population Report?
A PSA population report ("pop report") is a public database showing how many copies of a specific card PSA has ever graded, broken down by grade from PSA 1 (Poor) to PSA 10 (Gem Mint). It is the closest thing to a supply ledger the card market has.
Where to find it: psacard.com/pop (free to access, may require login)
PSA, BGS, CGC, and SGC all publish pop reports for free:
- PSA: psacard.com/pop
- BGS: beckett.com/grading/population-report
- CGC: cgccards.com/population-report
- SGC: gosgc.com/population-report
Important: Pop reports only cover cards graded by that specific company. A card's total graded population spans all graders. PSA has the largest population by volume, so PSA pop reports are the most useful reference.
How to Read a PSA Pop Report
A typical pop report entry shows the total population split across grades. Here are the four numbers you need to read:
| Metric | What It Means | How to Use |
|---|---|---|
| Total Graded | All PSA submissions ever for this card | Under 300 = immature pop; gem rate is provisional |
| PSA 10 Count | Copies graded Gem Mint | Lower = more scarce = higher premium |
| PSA 9 Count | Copies graded Mint | Compare to PSA 10 to calculate gem rate |
| Higher Count | How many copies exist above your grade | For PSA 9s: under 50 = top-pop asset; over 5,000 = commodity |
Example: 2003 Topps Chrome LeBron James #111
- PSA 10: 342 copies
- PSA 9: 1,247 copies
- PSA 8: 892 copies
- Total Graded: 3,156
- Gem Rate: 342 / 3,156 = 10.8%
- Interpretation: Moderately difficult to grade PSA 10. 342 PSA 10s = relatively available. PSA 10 commands ~4x PSA 9 premium ($8,000 vs $2,000).
Gem Rate: The Single Most Important Metric
Gem rate is not displayed directly in the pop report — you must calculate it yourself. It is the single best measure of how hard a card fights back against graders.
Formula: Gem Rate = (PSA 10 Population / Total Graded) x 100
Gem rate tiers and what they mean:
| Gem Rate | Scarcity Level | Price Impact | Example |
|---|---|---|---|
| Under 1% | Trophy asset | 20-80x+ PSA 9 | 1993 SP Jeter (0.09%) |
| 1-5% | Major condition scarcity | 8-20x PSA 9 | 1986 Topps Rice (0.17%) |
| 5-10% | Difficult to gem | 4-8x PSA 9 | 1989 UD Griffey (4%) |
| 10-25% | Moderate difficulty | 3-5x PSA 9 | 2003 Chrome LeBron (10.8%) |
| 25-50% | Average | 2-3x PSA 9 | Modern Prizm stars |
| Over 50% | Easy to gem | 1.5-2x PSA 9 | Modern base, well-centered sets |
Key insight: Two cards can have the same PSA 10 population and completely different investment profiles. Pop 500 out of 100,000 gradings is a condition-scarcity trophy. Pop 500 out of 1,200 gradings is a card nobody grades. The gem rate is what separates them.
Scarcity Analysis: Finding Undervalued Cards
Population data reveals scarcity, and scarcity drives value. Here is how to find undervalued cards using pop data:
PSA 10 population and scarcity premiums:
| PSA 10 Population | Scarcity Level | Typical Premium vs PSA 9 |
|---|---|---|
| 1-10 | Ultra-scarce | 5-20x |
| 11-50 | Very scarce | 3-5x |
| 51-200 | Scarce | 2-3x |
| 201-500 | Moderate | 1.5-2x |
| 501-1,000 | Common | 1.2-1.5x |
| 1,000+ | Very common | 1.1-1.3x |
Scarcity is relative to demand. A card with 100 PSA 10s but massive collector demand (e.g., Michael Jordan rookie) still commands premiums. A card with 100 PSA 10s but no demand (role player common) has no premium. Always cross-reference pop data with sales volume on eBay, CardLadder, or 130point.
Pop Growth Velocity: The Degradation Signal
Pop reports are not static — every month, new gems get minted and supply grows. Tracking population changes over time is essential for understanding whether a card's premium is durable or degrading.
How to calculate pop growth velocity:
Monthly Growth = (Current Total Graded - Total Graded 3 Months Ago) / 3
Interpretation:
- Under 1% per month: Stable population. Gem rate is predictive. Safe to trust the premium.
- 1-5% per month: Moderate growth. Gem rate is slowly degrading. Premium may compress over time.
- Over 5% per month: Rapid growth. Gem rate is actively degrading. Wait before submitting — more 10s are coming, which will compress the premium.
The declining gem rate trap: When gem rate is above 60% and total graded is under 500, assume the population is immature. A current-year rookie showing a 68% gem rate on 180 total graded may settle near 35% once a few thousand average-quality copies are submitted. Never treat a high gem rate on a young population as durable.
Investment Signals: Using Pop Data for Grading Decisions
Population data should inform three key decisions: whether to grade, whether to buy, and whether to sell.
Should I grade this card?
- Check the gem rate. Under 10% and you have a clean card? The premium chase is worth it.
- Over 40% gem rate? The premium may not justify the $80 grading fee.
- Check pop growth velocity. If the pop is growing rapidly, more 10s are coming — the premium will compress.
Should I buy this graded card?
- Check the PSA 10 population. Under 50 = scarce, premium is durable. Over 5,000 = common, premium may compress.
- For PSA 9s, check the higher count. Under 50 higher-count means the 9 is effectively a top-pop asset. Over 5,000 means the 9 is a commodity waiting to be repriced by every new gem.
- Cross-reference with sold comps. Scarcity-Price Ratio = PSA 10 FMV / PSA 10 Population. Lower ratio = better value.
Should I sell this graded card?
- If pop growth is accelerating and the gem rate is degrading, sell before the premium compresses further.
- If the population is stable and demand is strong, hold — the premium is durable.
- For cards with pop 1 (only one copy at that grade), the scarcity premium is maximum — sell when demand is peaking.
What Pop Reports Don't Tell You
Pop reports are powerful but have limitations. Use them as one data source, not gospel:
- No raw population: Pop reports don't show how many raw copies are in circulation. A card with 200 PSA 10s might have 100,000 raw copies sitting in binders.
- No other graders' numbers: PSA pop reports only show PSA-graded cards. BGS, CGC, and SGC populations are separate.
- Cracked and resubmitted inflation: A card cracked and resubmitted appears more than once in the pop report, inflating the count slightly.
- No demand data: Pop reports show supply, not demand. A scarce card with no collector interest is not valuable. Always cross-reference with sales data.
- No condition data on raw cards: Pop reports don't tell you what grade a raw card would receive. Use AI pre-grading for that.
- Historical, not real-time: Pop reports update continuously but are not real-time. A card with 200 PSA 10s today might have 250 next month.
Frequently Asked Questions
What is a PSA population report?
How do I calculate gem rate from a pop report?
What is a good PSA gem rate for investing?
How often do PSA pop reports update?
What does "higher count" mean in a pop report?
Can pop reports tell me if a card is worth grading?
Do pop reports include cards graded by BGS, CGC, or SGC?
Sources & Further Reading
- How to Read a PSA Population Report (AgentGrail)
- PSA Pop Report Explained (Graded.World)
- How to Read a Pop Report (Card Shop Finder)
- PSA Population Report Guide (Packz)
- PreGradeCards Pop Report Strategy
The PreGradeCards Research Team combines machine-learning engineers, grading analysts, and collector-education specialists to produce accurate, data-driven guides on AI card grading, professional grading standards, and collecting strategy.
With submission floors rising, pre-screening is no longer optional. Use our AI Pre-Grade Calculator to score a card's PSA 10 odds before you pay, and the Submission Planner to pick the right tier.