Question 1

What are MTG supply signals?

Accepted Answer

Supply signals detect unusual market activity for Magic cards — dealer inventory drops, buylist price spikes, and listing velocity changes. These shifts often precede price moves, giving you an early warning before the broader market reacts.

Question 2

How do supply signals affect card prices?

Accepted Answer

When dealers raise buylists or pull inventory, it signals rising demand or shrinking supply. Cards showing high-confidence supply signals frequently see price increases within days as the available copies dry up.

Question 3

How often are supply signals updated?

Accepted Answer

Supply signals are computed daily from price spreads, dealer buylist changes, and sales velocity patterns. Each signal includes a confidence level (unusual, alert, or buyout) and a phase (early, active, or late) so you can gauge timing.