Best CS2 Knives to Buy — Ranked by Trend and Liquidity

Two readings, and neither is allowed to speak alone. The first is momentum: how the SteamAnalyst reference price has moved over the last 7 days, weighted against the last 30 so a one-week jump has to be confirmed by the month before it counts. The second is liquidity: whether the item actually trades, measured from real units changing hands over 30 days. Momentum sets the rating and liquidity can only pull it down — because a skin climbing 20% a week is worth nothing to you if there is no way to sell it again.

Because you have to be able to get back out. A rising price in a market where almost nothing trades is a number on a screen, not money — you would be buying into something with no buyers behind it. Thin trading caps how well an item can rate no matter how hard it is climbing, and an item that rarely trades at all cannot rate above "Weak entry".

A falling price plus a market you cannot leave. Those two are worse together than either is alone: a falling price in a deep market is just a bad entry, since you can still sell. A falling price with nobody trading is a trap. So on the "worst to buy" list, thin trading pushes an item further down rather than merely capping it — the reverse of how it works on the buy side.

The 7-day price change weighted at 60%, plus the 30-day change at 40%. Signed, so the two argue with each other: a week up 10% inside a month down 10% blends to about +2% and lands in Neutral, which is the honest reading of a bounce inside a decline. An item needs roughly 8% blended momentum for the top band and 3% for the second.

Because a week carried by its last day is a spike, not a trend — and it is the thing a momentum ranking gets wrong most often, sorting yesterday's jump to the top on the morning it is least likely to continue. When more than 50% of the week's move happened in the final day, the item cannot claim the top band and the row says so.

The SteamAnalyst reference price — the same aggregate price shown in the price column here and on every skin page. That is deliberate: the percentage this page ranks on is the percentage the price beside it actually moved, and clicking through to the skin shows the same number. Three surfaces, one measurement.

One of four reasons, and each is us declining to guess rather than a judgement on the item. We hold fewer than 20 recorded prices for it in the window; its price or trade data has not updated in over 7 days; we have not recorded the 10 trading days needed to rate its liquidity at all; or it is under $5, where a one-cent tick is a whole percentage point and the ranking would be measuring rounding rather than the market.

No. It is a measurement of two things — where a price has been, and how readily the item trades — presented so you can see both and disagree with the conclusion. Neither predicts the future. Game updates, tournament demand and Steam sales all move this market in ways no indicator anticipates. Never spend more than you can afford to lose.