What liquidity means here
Liquidity is how quickly and reliably you can turn a card into cash near its fair value. Popular, frequently traded cards are liquid; thin-market, niche, or ultra-high-end cards can take time and a haircut to move.
Why it matters
If you ever need to raise cash — or simply rebalance — illiquid holdings cost you in time and price. A collection heavy in hard-to-sell cards carries a hidden risk a paper total does not show.
Measure it
Slabline scores liquidity as one of its five factors (10% of the Slabline Score), using how readily your holdings convert to cash — so you can see, at a glance, how sellable your collection really is.