Card Portfolio Stress Test
How would your card collection survive a market crash? Build your portfolio, pick a scenario, and see exactly which cards are vulnerable and which are resilient.
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Frequently Asked Questions
How does the card portfolio stress test work?
Build a portfolio of up to 20 cards from our 6,200+ card database (or pick a preset like Top Rookies or Vintage Collection). Then select one of 8 market scenarios — such as Market Crash, Rookie Bubble Pop, or Grading Scandal — to see how your portfolio would be affected. The tool calculates per-card impact based on factors like card era, rookie status, sport, grade, and value tier. You get a total portfolio impact percentage, resilience letter grade (S through F), risk score out of 100, and personalized hedging recommendations.
What market scenarios can I test against?
There are 8 scenarios spanning different risk types: Market Crash (broad 30-40% downturn), Sport Lockout (single sport drops 25-35%), Star Player Injury (top player cards drop 40-60%), Grading Scandal (graded premiums drop 20-30%), Rookie Bubble Pop (speculative rookies crash 40%), Vintage Surge (pre-1980 cards gain 25-50%), Rookie Boom (hot class drives 30-60% gains), and Off-Season Dip (predictable seasonal 15% dip). Each scenario affects different card types differently.
How can I make my card portfolio more resilient to market downturns?
The most resilient card portfolios share four traits: multi-sport diversification (3+ sports reduces lockout and seasonal risk), vintage allocation (10-25% pre-1980 cards provide stability), balanced rookie exposure (30-50% rookies instead of 70%+), and mixed grading status (some raw cards hedge against grading company risk). The single most impactful change is adding vintage cards — they consistently hold value through market corrections because supply is permanently fixed.
Are the stress test results based on real market data?
The scenario impacts are modeled on historical card market patterns. For example, the 2020-2022 card market bubble and correction saw modern rookies drop 40-60% while vintage cards held or gained. The 2021 PSA authentication concerns caused a temporary 15-20% drop in graded premiums. NBA lockouts historically depressed basketball card prices 20-30%. The tool applies these patterns proportionally based on each card's characteristics — era, sport, grade status, rookie status, and value tier.
What does the resilience grade mean?
The resilience grade rates your portfolio's ability to withstand the selected scenario. S grade means virtually no impact (risk score 0-10), A means minimal impact (10-20), B means moderate impact (20-30), C means significant impact (30-45), D means severe impact (45-60), and F means devastating impact (60+). A well-diversified portfolio with vintage cards, multiple sports, and balanced rookie exposure typically earns an A or B grade across most scenarios.