CSTM	The short sale volume percent (not short interest) for stock ticker CSTM is 15% on Jan 21, 2026. The short sale volume is 69,727. The total volume is 461,874. The short sale volume percent is up 1% compare to Jan 20, 2026.

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Insider Buying

The Volume and short volume are limited. It is not including all volumes from all Market.
Date	Short Volume	Total Volume	Percent
2026-01-21	69,727	461,874	15%
2026-01-20	90,539	631,391	14%
2026-01-16	181,731	614,940	30%
2026-01-15	118,062	647,942	18%
2026-01-14	158,243	595,169	27%
2026-01-13	123,862	506,285	24%
2026-01-12	282,799	856,837	33%
2026-01-09	103,675	847,685	12%
2026-01-08	74,139	609,861	12%
2026-01-07	57,790	385,956	15%

Last 5 days short percent	20.95%
Last 10 days short percent	20.47%
Last 20 days short percent	21.07%
Last 50 days short percent	22.20%

Related Stock Ticker
Date	Ticker	Short Volume	Total Volume	Percent
2026-01-21	AA	861,197	2,626,792	33%
2026-01-21	KALU	27,788	55,860	50%
2026-01-21	PKOH	1,475	2,070	71%