ATAI	The short sale volume percent (not short interest) for stock ticker ATAI is 26% on Jan 13, 2026. The short sale volume is 543,800. The total volume is 2,071,352. The short sale volume percent is up 12% compare to Jan 12, 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
2026-01-13	543,800	2,071,352	26%
2026-01-12	425,929	3,066,372	14%
2026-01-09	861,082	2,132,521	40%
2026-01-08	551,893	1,653,885	33%
2026-01-07	698,734	1,627,705	43%
2026-01-06	581,647	1,508,573	39%
2026-01-05	1,262,471	2,167,907	58%
2026-01-02	1,080,485	1,926,479	56%
2025-12-31	716,188	1,646,818	43%
2025-12-30	598,742	1,346,960	44%

Last 5 days short percent	29.20%
Last 10 days short percent	38.23%
Last 20 days short percent	37.28%
Last 50 days short percent	32.45%