CIEN	The short sale volume percent (not short interest) for stock ticker CIEN is 45% on Jan 21, 2026. The short sale volume is 514,874. The total volume is 1,156,056. The short sale volume percent is up 4% 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	514,874	1,156,056	45%
2026-01-20	502,641	1,233,251	41%

Last 5 days short percent	N/A
Last 10 days short percent	N/A
Last 20 days short percent	N/A
Last 50 days short percent	N/A

Related Stock Ticker
Date	Ticker	Short Volume	Total Volume	Percent
2026-01-21	ADTN	95,418	260,932	37%
2026-01-21	CALX	166,809	227,823	73%
2026-01-21	CSCO	2,249,090	4,775,746	47%
2026-01-21	XLK	1,935,570	4,823,581	40%