S&P 500 7,757.17 +0.58%
Nasdaq 26,702.86 +1.05%
S&P/TSX 36,324.99 +0.60%
Apple 343.99 +1.32%
Nvidia 221.97 +2.54%
Microsoft 532.95 +0.20%
Shopify 244.93 +0.38%
Royal Bank 283.62 +1.23%
CAD/USD 0.7119 +0.14%
AFTER HRS · 18:25 ET
Market ClerkRecap
Wed Oct 21 · after hours2 signals today106 insider buys this week · $305.5MCIRO short report next: Oct 31The week ahead

AMPH

Amphastar Pharmaceuticals, Inc.
NASDAQ · HEALTH CARE · PHARMACEUTICAL PREPARATIONS
26.20
+0.26 +1.00%
USD · close Oct 21

A free account adds a watchlist, alerts when insiders, Congress or short sellers move on your tickers, and a morning brief. Sign up

Short interest

FINRA · TWICE MONTHLY
Report dateShares shortChange% of shares outAvg daily volumeDays to cover
2026-08-315.1M−251K12.07%334K15.4
2026-08-145.4M+457K12.66%541K10.0
2026-07-314.9M+754K11.59%415K11.9
2026-07-154.2M+329K9.81%374K11.2

Short Watch, all names.

Watch AMPH. Know when insiders buy.
One email the day a filing lands. Free.