BLACKROCK ADVISORS LLC - AMPHASTAR PHARMACEUTICALS IN ownership

AMPHASTAR PHARMACEUTICALS IN's ticker is AMPH and the CUSIP is 03209R103. A total of 138 filers reported holding AMPHASTAR PHARMACEUTICALS IN in Q4 2016. The put-call ratio across all filers is - and the average weighting 0.0%.

Quarter-by-quarter ownership
BLACKROCK ADVISORS LLC ownership history of AMPHASTAR PHARMACEUTICALS IN
ValueSharesWeighting
Q4 2016$370,000
-1.3%
20,114
+1.7%
0.00%
Q3 2016$375,000
+26.7%
19,776
+7.6%
0.00%
Q2 2016$296,000
+60.9%
18,379
+20.2%
0.00%
Q1 2016$184,000
+7.6%
15,296
+27.4%
0.00%
Q4 2015$171,000
-2.8%
12,008
-20.5%
0.00%
Q3 2015$176,000
-37.1%
15,096
-5.3%
0.00%
Q2 2015$280,000
+337.5%
15,947
+271.4%
0.00%
Q1 2015$64,000
+60.0%
4,294
+24.5%
0.00%
Q4 2014$40,0000.0%3,4500.0%0.00%
Q3 2014$40,0003,4500.00%
Other shareholders
AMPHASTAR PHARMACEUTICALS IN shareholders Q4 2016
NameSharesValueWeighting ↓
LAM GROUP, INC. 130,250$3,649,6053.75%
SHAKER INVESTMENTS LLC/OH 81,287$2,277,6621.41%
Mesirow Institutional Investment Management, Inc. 374,414$10,491,0801.38%
OBERWEIS ASSET MANAGEMENT INC/ 134,000$3,754,6800.80%
Portolan Capital Management 270,791$7,587,5640.75%
Hillsdale Investment Management Inc. 172,238$4,826,1090.41%
Capital Impact Advisors, LLC 14,669$411,0250.40%
Watershed Asset Management, L.L.C. 9,555$267,7310.34%
Quantedge Capital Pte Ltd 35,153$984,9870.33%
FEDERATED HERMES, INC. 3,284,217$92,023,7600.25%
View complete list of AMPHASTAR PHARMACEUTICALS IN shareholders