What is the most owned Baseball card?

The most owned Baseball card is Royce Lewis [Rainbow Foil] with 1 unique collectors. Based on real portfolio data from Guardian TCG.

How is ownership data collected?

This ranking is based on 3,815+ real collector portfolios on Guardian TCG. Cards are counted by unique owners, not total copies.

Name: Most Owned Baseball Cards
Creator: Guardian TCG
License: https://creativecommons.org/licenses/by-nc/4.0/

The 1 most collected Baseball cards ranked by number of unique collectors. Real portfolio data from 3,815+ collectors.

Ranked by unique collectors who own each card. Based on 3,815 real collector portfolios on Guardian TCG — proprietary data no other site has.

Rank	Card	Game	Set	Price	Collectors
1	Royce Lewis [Rainbow Foil]	Baseball	2025 Topps	$1.68	1

Groudon (Paradox Rift) — $117.30 (+68900.0% this week)
Team Rocket's Mewtwo ex (Destined Rivals) — $542.69 (+45890.7% this week)
Mega Gardevoir ex (Mega Evolution) — $200.33 (+31698.4% this week)
Samurott (White Flare) — $43.29 (+30821.4% this week)
Ethan's Ho-Oh ex (Destined Rivals) — $176.04 (+23689.2% this week)
Exeggcute (Legendary Collection) — $99.99 (+19128.8% this week)
Baxcalibur (Paldea Evolved) — $29.95 (+17517.7% this week)
Mega Venusaur ex (Mega Evolution) — $153.30 (+17320.5% this week)
Milotic ex (Surging Sparks) — $125.27 (+16382.9% this week)
Energy Retrieval (Legendary Collection) — $99.00 (+16129.5% this week)
Spearow (Legendary Collection) — $85.00 (+13834.4% this week)
Seel (Legendary Collection) — $68.87 (+13144.2% this week)
Tentacool (Legendary Collection) — $73.97 (+12228.3% this week)
Geodude (Legendary Collection) — $87.50 (+11724.3% this week)
Gardevoir ex (Scarlet & Violet) — $84.87 (+10508.8% this week)

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