Slabnomics

 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.  Music licensed through Soundstripe. Co...

 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 matter...

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 Silve...

 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 Bu...

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 i...

 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.  Weekly Newsletter Signup: Slabnomics.com 🎥 Yo...

Here's why it's a bad investment every time.  Only on Slabnomics. Weekly Newsletter Signup: Slabnomics.com 🎥 Youtube 📸 Instagram

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. Weekly Newsletter Signup: Slabnomics.com 🎥 Youtube 📸 Instagram

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...

 This is the first time I've walked through the full Slabnomics process from start to finish. Post-mortem to pattern recognition to filter to hunt to execution decision. End to end, with one real trade as the worked example.  I talk about: Post-mortem methodology and tag-based pattern recognition The four-tag rule for win-rate stacking MLD framework applied to a current superstar's valua...

Every Facebook card group has the post. Cash in hand. Buying at 80% of comp. Same wording, different accounts, every week. Nobody asks where the 80% came from. Today we do. This episode walks through the why of that number, the three cognitive biases that keep sellers accepting, and two practical things to do so we can stop seeing those posts. Why this practice preys on the very people we should s...

Both sides studied the stock market. Nobody applied this to cards. Until now. In this episode of Slabnomics, we introduce the Discoverable Market framework and make the case that the card market is neither efficient nor random. It's exploitable. The information exists. Most people just aren't using it. ✅ What the Efficient Market Hypothesis actually means ✅ The 3 conditions required fo...

 Most card collectors think negotiation is just haggling: subtract from the sticker price, meet in the middle, done. It's not.  In this episode, Matt breaks down the actual framework behind why deals happen and why they don't using Chris Voss's tactical empathy principles applied directly to the card market.  You'll hear both sides of a real card show weekend: a buy that closed...

This episode applies institutional liquidity frameworks to the card market. Three types of liquidity and what each one means for your portfolio. Why soccer trades like a two-buyer auction room despite 91% index gains. How price slippage destroys your comp stack when you hold multiples and list them sequentially. The difference between a market that is moving and a market that is coasting on inerti...

Have you ever been right about a card and watched the market ignore you for months?  This episode breaks down the hidden architecture driving card prices. Not the surface-level "supply and demand" explanation, but the actual forces underneath: the psychological biases that keep incorrect prices in place far longer than they should, the structural mechanics that used to prop up modern set...

Most people walk into a card show with a feeling. A vague sense of what looks good, what seems reasonably priced, what a dealer's enthusiasm is worth.  This episode is about the gap between walking a show with a framework and walking one with a feeling, and what that gap costs you over time.  From there, the episode gets concrete. Nobel Prize-winning economist George Akerlof's "Mark...

Topps Chrome Basketball is back, Fanatics owns the licenses to all three major American sports leagues, and the hobby is generating real noise. But this isn't a hype story. It's a supply structure event, and those play out differently than people expect. In this episode, we walk through the history of Topps Chrome refractors, the gem market cap data behind the LeBron James 2003 rookie, h...

What Gem Market Cap is and why it matters (PSA 10 population × last sale price) Applying stock market logic (market capitalization) to sports cards Analysis of 30 Panini Prizm sets (13 basketball, 13 football, 4 soccer) Total PSA 10 base & silver value across sports (~$75 million) Basketball vs Football vs Soccer capitalization comparison The Grubbs Test (3 standard deviation outlier detection...

Grading has a structural mispricing that represents one of the most compelling arbitrage opportunities in the sports card market. This episode breaks down the population data, valuation multiples, and market mechanics that explain why. Key Analysis: *PSA 10 to BGS 10 Pristine population analysis using 1989 Upper Deck Ken Griffey Jr as case study *Why the 39x rarity differential only translates to...

 I analyzed every trade I made over 10 months in one of my buckets: 311 sales, $55,000 deployed and fed it all into Claude AI to find patterns.  The result was a complete rebuild of how I think about sports card portfolio construction.  Using meta-tags to track performance across player tier, set quality, rarity, and card type, I discovered that sets really do matter, and GOATs matter most in socc...

In this episode of Slabnomics, I pulled every single Panini Prizm base and silver parallel for both players: Lebron James and Lionel Messi.  I compared PSA 10 populations, last sale prices, and a metric I'm calling Gem Market Cap. What I found shook me. This episode covers: How supply, demand & price discovery work differently in cards vs traditional markets The MLD Valuation Framework (M...

 What makes a card valuable—not expensive, but valuable? Matt shares the questions driving his research: Can sets tell us a player's lowest common denominator? Which archetypes have the most seasonal volatility? How do sports card markets mature as alternate assets? From GOAT multipliers to post-hype sleepers, generational prospects to position-specific volatility bands—the frameworks being b...

After breaking down PSA 9 and Beckett findings on Instagram last week, this episode returns to fundamentals: how to actually make money in sports cards. You'll Learn: The MLD Framework (Market, Legacy, Design) for valuing any card in 60 seconds The Rule for Auction vs BIN... and when to break that rule The velocity of money principle: fast nickels vs slow dimes How to identify demand windows...

Is the PSA 9 dead? I dove into the data across three eras (vintage, modern, ultra-modern) and four sports (baseball, basketball, football, soccer) to find out when PSA 9s hold value, and when they're just an expensive failure certificate. The numbers are staggering: PSA created 31 million new 10s since 2020, compared to just 5 million total from 1991-2019. In 2025 alone, 6.5 million new PSA 1...

The market doesn't reward truth, it rewards timing. In this episode of Slabnomics, I break down the concept of DEMAND WINDOWS and why understanding the direction of capital flow is the key to profiting in sports cards in 2026. Key insights from this episode: → Why "a rising tide lifts all boats" is WRONG for card investing → The supply absorption capacity concept explained → Sport-b...