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Ribbon Communications

Name Holding Trade Value Shares
Change
Change in
Stake
Arrowstreet Capital
151
Arrowstreet Capital
Massachusetts
-$2.55M -151,527 Closed
PCM
152
Pentwater Capital Management
Florida
-$1.94M -114,840 Closed
UOC
153
UBS O'Connor
Illinois
-$1.69M -100,000 Closed
GIPM
154
G2 Investment Partners Management
New York
-$1.12M -66,483 Closed
KSC
155
Kendall Square Capital
California
-$1.04M -61,960 Closed
EC
156
EJF Capital
Virginia
-$910K -54,000 Closed
HCM
157
Highbridge Capital Management
New York
-$496K -29,414 Closed
BMCMI
158
Bryn Mawr Capital Management Inc
Pennsylvania
-$406K -24,101 Closed
SKK
159
Shepherd Kaplan Krochuk
Massachusetts
-$263K -15,586 Closed
ACI
160
AMP Capital Investors
Australia
-$227K -13,690 Closed
SCA
161
SAC Capital Advisors
Connecticut
-$211K -12,509 Closed
QIM
162
Quantitative Investment Management
Virginia
-$185K -11,000 Closed
PP
163
Paloma Partners
Connecticut
-$173K -10,259 Closed
DTL
164
Dynamic Technology Lab
Singapore
-$119K -7,073 Closed
JG
165
Jefferies Group
New York
-$84K -4,990 Closed
Comerica Bank
166
Comerica Bank
Texas
-$64K -3,827 Closed
SB
167
Suntrust Banks
Georgia
-$58K -3,461 Closed
CAM
168
Capstone Asset Management
Texas
-$48K -2,830 Closed
WA
169
Winfield Associates
Ohio
-$24K -1,400 Closed
RNS
170
Robert N. Shapiro
-$10K -620 Closed
AWM
171
Avior Wealth Management
Nebraska
-$5K -323 Closed
Parallax Volatility Advisers
172
Parallax Volatility Advisers
California
-$1K -37 Closed