Slabnomics

Is the PSA 9 dead? Not so fast. Matt digs into three iconic cards across three sports to test a strange pattern: PSA 9s outperforming PSA 10s.

He indexes every sale against player and sport baskets, then walks the data. 2003 Topps Chrome LeBron. 2014 World Cup Prizm Messi. 1999 Base Set Charizard.

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 A 15-month soccer card investment fund, reviewed in real time during the 2026 World Cup. Why demand trickles top-down in illiquid markets, why case hits (Kaboom, Color Blast, Stained Glass) hold a floor, and why Messi, Mbappé, and Haaland moved the market while prospects burned capital. Supply, demand, and the pre-tournament dip. 

Invest, don't gamble. 

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 I looked at all 83 parallels of Victor Wembanyama's 2023 Prizm rookie and indexed every sale against his player market. The best returns did not come from the 1/1s. This episode is a thought dump on that, plus two bigger questions: is vintage cheap relative to modern, and what happens to slab prices now that PSA cut off low-value grading. Your job this week is to tell me which project matters most to you. 

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One Victor Wembanyama rookie card. Sixty-three parallels. Every grade, every grader, tracked from first sale to today. 

Only on Slabnomics will you hear a ranking of all parallels by return percentage AND grader breakdowns.

I broke down the entire 2023 Panini Prizm #136 rainbow to find which colors and which grades actually paid, and the answers cut against what the hobby repeats. The famous Silver underperformed. A PSA 9 beat the PSA 10 in a lot of parallels. 

Listen in for which parallels had the best ROI; a full data teardown of a $138 million card market. 

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 Out of the 10 biggest names in 1952 Topps, only four beat the S&P 500 over 22 years. 

We pulled 9,720 real sales back to 2004, ran every PSA grade through three market cycles, and spoiler alert, the winner isn't the 1952 Mantle.

Plus the first look at RRR, the risk-return ratio built to tell you which cards let you sleep at night. Full grade-by-grade breakdown at slabnomics.com. 

Keep Building. 

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PSA just halted all four of its value grading tiers. The hobby is calling it a failure. We're calling it something else. PSA just acted like a central bank.

This episode breaks down why PSA controlling the supply of grades is the same lever the Federal Reserve pulls when it controls the supply of money. 

We map the full analogy, the dual mandate between volume and grade integrity, and where it breaks down in a way every collector should understand.

Then we run the backtest. PSA did this exact move in 2021, and the data tells us what comes next. 

Supply structure, grade inflation, and what to watch over the next two quarters.

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 Sports card investing through a Wall Street lens. Matthew Worley breaks down supply, demand, and market cap mechanics using three Messi Prizm World Cup Silvers (2014, 2018, 2022). Learn float vs pop report, gem rate math, why hypermodern oversupply breaks and vintage tightens, and how to time entry points. Data-driven card investing from Slabnomics. 

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Here's why it's a bad investment every time. 

Only on Slabnomics.

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174 of my own card flips: 
Vintage won 62.7% of the time. Modern won 40.7%. 

Value Premium, What cards are most like value stocks and growth stocks, and how to tilt a portfolio.

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Seven Card Ladder charts. Three years of price and volume. Seven different cycle stages.

This episode applies the Wyckoff Method, the 100-year-old framework finance uses to read market cycles, to the sports card market. The three laws. The four stages. The Composite Operator. Then chart by chart through Low-End, Mid-End, High-End, Baseball, Basketball, Football, and Soccer. 

By the end you'll know which segments are still early, which are running hot, which are showing distribution warnings, and what to do about each one in your portfolio.

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