ADVISORY RESEARCH INC - AMPHASTAR PHARMACEUTICALS IN ownership

AMPHASTAR PHARMACEUTICALS IN's ticker is AMPH and the CUSIP is 03209R103. A total of 250 filers reported holding AMPHASTAR PHARMACEUTICALS IN in Q3 2023. The put-call ratio across all filers is 1.02 and the average weighting 0.1%.

Quarter-by-quarter ownership
ADVISORY RESEARCH INC ownership history of AMPHASTAR PHARMACEUTICALS IN
ValueSharesWeighting
Q3 2023$684,791
-22.7%
14,890
-3.4%
0.10%
-16.7%
Q2 2023$885,440
+59.8%
15,407
+4.2%
0.11%
+25.3%
Q1 2023$554,212
+30.1%
14,779
-2.4%
0.09%
+116.7%
Q3 2022$426,00015,1480.04%
Other shareholders
AMPHASTAR PHARMACEUTICALS IN shareholders Q3 2023
NameSharesValueWeighting ↓
LAM GROUP, INC. 128,000$5,886,7205.78%
Beacon Harbor Wealth Advisors, Inc. 103,095$4,7411.58%
Capital Impact Advisors, LLC 15,304$703,8311.18%
Quantedge Capital Pte Ltd 36,389$1,673,5300.91%
Mesirow Institutional Investment Management, Inc. 183,805$8,453,1920.86%
Monashee Investment Management LLC 39,461$1,814,8110.76%
OBERWEIS ASSET MANAGEMENT INC/ 152,500$7,013,4750.74%
Granite Investment Partners, LLC 330,911$15,218,5970.64%
Portolan Capital Management 132,850$6,109,7720.57%
SHAKER INVESTMENTS LLC/OH 20,795$956,3620.53%
View complete list of AMPHASTAR PHARMACEUTICALS IN shareholders