CHARLES SCHWAB INVESTMENT MANAGEMENT INC - SONUS NETWORKS INC ownership

SONUS NETWORKS INC's ticker is SONSXXXX and the CUSIP is 835916107. A total of 130 filers reported holding SONUS NETWORKS INC in Q2 2013. The put-call ratio across all filers is 0.02 and the average weighting 0.2%.

Quarter-by-quarter ownership
CHARLES SCHWAB INVESTMENT MANAGEMENT INC ownership history of SONUS NETWORKS INC
ValueSharesWeighting
Q4 2014$2,854,000
+24.6%
718,696
+7.3%
0.00%0.0%
Q3 2014$2,290,000
-2.8%
669,573
+2.1%
0.00%0.0%
Q2 2014$2,355,000
+3.6%
655,956
-2.8%
0.00%0.0%
Q1 2014$2,274,000
+10.5%
674,585
+3.3%
0.00%0.0%
Q4 2013$2,058,000
+0.8%
653,293
+10.5%
0.00%0.0%
Q3 2013$2,041,000
+19.5%
591,321
+4.2%
0.00%0.0%
Q2 2013$1,708,000567,2730.00%
Other shareholders
SONUS NETWORKS INC shareholders Q2 2013
NameSharesValueWeighting ↓
Empire Capital Management, L.L.C. 38,595,000$116,171,00014.01%
CENTRAL SECURITIES CORP 3,000,000$9,030,0002.37%
Robertson Opportunity Capital, LLC 541,200$1,629,0001.25%
IRONWOOD INVESTMENT MANAGEMENT LLC 2,175,254$6,548,0001.16%
Montibus Capital Management LLC 2,091,878$6,296,552,0000.80%
Grandeur Peak Global Advisors, LLC 485,900$1,463,0000.56%
Contour Asset Management LLC 2,480,000$7,465,0000.52%
Roc Capital Management, L.P. 46,668$140,0000.44%
ARTIS CAPITAL MANAGEMENT, L.P. 160,672$484,0000.41%
Cowen Prime Services LLC 262,300$790,0000.33%
View complete list of SONUS NETWORKS INC shareholders