REGN	The short sale volume percent (not short interest) for stock ticker REGN is 27% on Jan 21, 2026. The short sale volume is 75,396. The total volume is 282,418.

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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	75,396	282,418	27%
2026-01-20	70,365	261,492	27%
2026-01-16	120,127	380,693	32%
2026-01-15	79,041	324,788	24%
2026-01-14	82,827	248,560	33%
2026-01-13	137,135	397,351	35%
2026-01-12	225,277	501,644	45%
2026-01-09	156,434	291,939	54%
2026-01-08	250,654	433,877	58%
2026-01-07	261,256	580,107	45%

Last 5 days short percent	28.56%
Last 10 days short percent	39.39%
Last 20 days short percent	42.72%
Last 50 days short percent	49.22%

Related Stock Ticker
Date	Ticker	Short Volume	Total Volume	Percent
2026-01-21	ALNY	275,886	660,112	42%
2026-01-21	AMGN	1,294,598	1,662,969	78%
2026-01-21	BIIB	331,657	534,321	62%
2026-01-21	JNJ	2,951,532	5,699,167	52%
2026-01-21	NVS	568,494	884,238	64%
2026-01-21	SNY	512,990	1,429,504	36%
2026-01-21	XLV	2,420,462	3,532,036	69%