After watching several items for a long stretch, I realized that stability usually comes from skins that people hold for personal reasons rather than profit. Those don’t circulate as often, so their price barely shifts. Somewhere in the middle of comparing those long-term behaviors, I found myself checking
https://dmarket.com/ingame-items/item-list/csgo-skins just to see how the calm skins differed from the ones that moved constantly. It became clear that the “roller coaster” ones are usually the skins that traders flip often, while the stable ones sit in inventories of people who simply like them. That difference in movement creates two very different price patterns, and once you see it, it becomes easier to understand which skins will stay steady and which ones will always react to every bit of market noise.