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Butterfly Knife

Butterfly Knife Index

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An index for Butterfly Knife skins.

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The Butterfly Knife Index is the cs2.sh weapon index for Butterfly Knife, covering 81 tracked market rows as of September 11, 2026. The index stands at 1,449.3 (base 1000 in January 2024), down 0.4% over 7 days and 2.6% over 30 days as of September 10, 2026. Measured from its first published level of 997.3 in January 2024, that is a 45.3% gain.

Butterfly Knife market overview

Family
Weapon
Tracked market rows
81
Index level
1,449.3Base 1000 in January 2024
7-day change
-0.4%
Tracked market value
$383.9M
7-day volume
$4.8M
Members covered
81 of 81
Butterfly Knife Index change by period, as of September 10, 2026
PeriodChange
7 days-0.4%
30 days-2.6%
The 10 largest constituents of the Butterfly Knife Index
ItemMarket valuePrice7-day change
★ Butterfly Knife | Fade$34.6M$2,149-0.6%
★ Butterfly Knife | Autotronic$25.8M$815.00-0.2%
★ Butterfly Knife | Lore$20.0M$600.00-1.5%
★ Butterfly Knife | Marble Fade$19.0M$1,315-0.3%
★ Butterfly Knife | Black Laminate$18.5M$621.00-0.1%
★ Butterfly Knife | Slaughter$18.3M$1,178+1.5%
★ Butterfly Knife | Freehand$17.2M$551.38-1.0%
★ Butterfly Knife | Bright Water$15.6M$492.11-1.8%
★ Butterfly Knife | Tiger Tooth$15.1M$1,065+0.5%
★ Butterfly Knife$14.8M$1,204-2.1%

What this index measures

The Butterfly Knife Index measures the blended price movement of the Butterfly Knife market rows cs2.sh prices, weighted by capped market value. Membership is reset at each monthly rebalance, so the 81 rows it covered as of September 11, 2026 were the rows in scope on that date. cs2.sh tracks $383.9 million in market value across its constituents, with $4.8 million in traded volume over the trailing 7 days as of September 11, 2026.

How the index has moved

Levels are index points, not prices: this index starts from a base of 1000 and carries a fixed basket between its monthly rebalances. The latest qualifying observation is 1,449.3 as of September 10, 2026.

What the index holds

The largest tracked market value in the index sits with ★ Butterfly Knife | Fade, ★ Butterfly Knife | Autotronic, and ★ Butterfly Knife | Lore. ★ Butterfly Knife | Fade alone accounts for about $34.6 million of that value. Among its most valuable constituents, the largest 7-day move belongs to ★ Butterfly Knife | Doppler, down 2.4%.

Index coverage

The latest observation used 81 of 81 tracked market rows. Rows without a qualifying price at the rebalance are left out of that figure.

What does the Butterfly Knife Index measure?

The blended price movement of the Butterfly Knife market rows cs2.sh prices, weighted by capped market value. It is an index level, not an average item price.

What does an index level of 1,449.3 mean?

It puts the basket 45.3% above the 1000 base the index started from in January 2024.

How has the Butterfly Knife Index performed?

Down 0.4% over 7 days and 2.6% over 30 days as of September 10, 2026, at an index level of 1,449.3.

What does the Butterfly Knife Index track?

81 Butterfly Knife market rows as of September 11, 2026, led by ★ Butterfly Knife | Fade, ★ Butterfly Knife | Autotronic, and ★ Butterfly Knife | Lore.

Which items carry the most weight in the Butterfly Knife Index?

★ Butterfly Knife | Fade at $34.6 million in tracked market value, then ★ Butterfly Knife | Autotronic at $25.8 million and ★ Butterfly Knife | Lore at $20.0 million.

Does the Butterfly Knife Index include every Butterfly Knife market row?

The latest observation covers 81 of 81 tracked market rows; the rest carried no qualifying price.

About cs2.sh

cs2.sh is the leading price API for Counter-Strike 2 skins. It covers BUFF, Youpin, CSFloat, Skinport, Steam, and C5Game with the best real-time prices, and complete price and sale history nobody else has.

Every price on this site comes from that API: live asking prices, listings, supply, liquidity, price history and 102 market indexes for 50,528 items, refreshed every few minutes and normalized to USD, with sale history back to 2013.

CS2 skin prices · Market indexes · API documentation · Pricing · CS2 price API · Price history API · BUFF163 price API · Youpin price API · CSFloat price API · Skinport price API · Steam market price API · C5Game price API