What percent of AMPH is sold short?

37.5% of Amphastar (AMPH) trading volume was short last week. Track days-to-cover and borrow rate against insider and hedge fund flow.

Is AMPH a short squeeze candidate?

Compare short volume, days-to-cover, and borrow rate to insider buying — when insiders accumulate against heavy short interest, the squeeze setup gets stronger.

How is short volume different from short interest?

Short volume is daily shorting activity reported by FINRA; short interest is the bi-monthly snapshot of outstanding short positions. We track both for Amphastar (AMPH).

AMPH Short Volume Hit 37.5%

$18.41

+0.25 (+1.38%)

Weekly Expected Move ±12.5%

$13 $15 $17 $19 $21

NASDAQ · Healthcare · Drug Manufacturers - Specialty & Generic · Alpha Radar Strong Sell · Power 30 · $811.8M mcap · 33M float · 1.89% daily turnover · Short 52% of daily vol

Short Volume Summary

2026-05-21

19.6%

Short Ratio

of total volume

62.5%

20-Day Avg

63.3%

50-Day Avg

▲ Rising

5-Day Trend

0.2M

Short Volume

0.9M

Total Volume

Daily Short Volume Ratio

Short Volume vs Total Volume

Exchange Breakdown

2026-05-21

Exchange	Short Volume	Total Volume	Short %
NASDAQ	159,407	845,422	18.9%
NYSE	8,953	14,812	60.4%
BATS	32	32	100.0%

AMPH NASDAQ

Short Volume Summary

Daily Short Volume Ratio

Short Volume vs Total Volume

Exchange Breakdown

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