MAIRS & POWER INC - SONUS NETWORKS INC ownership

SONUS NETWORKS INC's ticker is SONSXXXX and the CUSIP is 835916107. A total of 133 filers reported holding SONUS NETWORKS INC in Q4 2013. The put-call ratio across all filers is 2.21 and the average weighting 0.1%.

Quarter-by-quarter ownership
MAIRS & POWER INC ownership history of SONUS NETWORKS INC
ValueSharesWeighting
Q3 2014$51,000
-5.6%
15,0000.0%0.00%0.0%
Q2 2014$54,000
+5.9%
15,0000.0%0.00%0.0%
Q1 2014$51,000
+8.5%
15,0000.0%0.00%0.0%
Q4 2013$47,000
-7.8%
15,0000.0%0.00%0.0%
Q3 2013$51,000
+13.3%
15,0000.0%0.00%0.0%
Q2 2013$45,00015,0000.00%
Other shareholders
SONUS NETWORKS INC shareholders Q4 2013
NameSharesValueWeighting ↓
Empire Capital Management, L.L.C. 22,000,000$78,980,00014.12%
Archon Capital Management LLC 3,085,034$11,075,0003.72%
CENTRAL SECURITIES CORP 3,000,000$10,770,0002.23%
HARBER ASSET MANAGEMENT LLC 490,361$1,760,0002.03%
BRIGHTFIELD CAPITAL MANAGEMENT LLC 451,800$1,622,0002.01%
IRONWOOD INVESTMENT MANAGEMENT LLC 2,066,773$7,420,0001.18%
Walthausen & Co., LLC 4,036,850$14,492,0001.06%
Grandeur Peak Global Advisors, LLC 1,001,100$3,594,0000.78%
BTG Pactual Global Asset Management Ltd 1,333,750$4,789,0000.67%
Hilltop Park Associates LLC 150,000$539,0000.52%
View complete list of SONUS NETWORKS INC shareholders