Secondary Market Velocity
'Secondary Market Velocity' is the broader, aggregate rate at which an issue's copies clear across every aftermarket conduit combined -- auction houses, marketplace listings, and private broker/dealer sales -- as distinct from Auction Velocity, which looks only at auction-house clearing. A spike in secondary market velocity following a media adaptation or publisher catalyst event signals demand moving through the entire ecosystem, not just through auctions.
The rate at which transactions clear across all available trading venues for an asset class, aggregated across every channel through which it can be bought and sold, reflects that asset's overall market liquidity.
Real-World Comic Market Application
Following a film announcement, an issue may see a surge in eBay listings, private sales, and dealer inquiries even before its next scheduled major auction appearance -- that broader surge is captured by secondary market velocity, not auction velocity alone.
Domain Guardrails & Anti-Patterns
Do not substitute auction-only data for secondary market velocity when eBay or private-sale activity is a material share of an issue's actual trading volume.
Trade or Inspect Related Assets
Explore comic equity issues governed by this valuation standard.