JPST	The short sale volume percent (not short interest) for stock ticker JPST is 59% on Jan 21, 2026. The short sale volume is 4,626,951. The total volume is 7,902,656. 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	4,626,951	7,902,656	59%
2026-01-20	3,198,514	5,803,622	55%
2026-01-16	2,613,504	4,839,639	54%
2026-01-15	4,799,137	6,848,726	70%
2026-01-14	1,639,872	4,284,429	38%
2026-01-13	1,261,648	3,717,626	34%
2026-01-12	2,948,247	6,108,959	48%
2026-01-09	2,366,899	6,263,164	38%
2026-01-08	1,642,562	3,846,652	43%
2026-01-07	2,299,385	4,889,008	47%

Last 5 days short percent	56.87%
Last 10 days short percent	50.27%
Last 20 days short percent	51.90%
Last 50 days short percent	49.02%