TRCT
RBBN icon

Tower Research Capital (TRC)’s Ribbon Communications RBBN Stock Holding History

Tower Research Capital (TRC)’s Portfolio RBBN Stock Details RBBN Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q1 		$16K Sell
7,558
-7,229
-49% -$17.3K ﹤0.01% 3639
2025
Q4 		$42.6K Buy
14,787
+10,480
+243% +$33.8K ﹤0.01% 2553
2025
Q3 		$16.4K Sell
4,307
-5,718
-57% -$22.5K ﹤0.01% 3479
2025
Q2 		$40.2K Buy
10,025
+8,213
+453% +$29.6K ﹤0.01% 3158
2025
Q1 		$7.1K Sell
1,812
-1,248
-41% -$5.26K ﹤0.01% 3980
2024
Q4 		$12.7K Sell
3,060
-6,634
-68% -$25K ﹤0.01% 3588
2024
Q3 		$31.5K Sell
9,694
-6,627
-41% -$21.5K ﹤0.01% 2974
2024
Q2 		$53.7K Buy
16,321
+15,776
+2,895% +$48K ﹤0.01% 3047
2024
Q1 		$1.74K Sell
545
-6,044
-92% -$18.4K ﹤0.01% 5195
2023
Q4 		$19.1K Buy
6,589
+25
+0.4% +$56 ﹤0.01% 3677
2023
Q3 		$17.6K Buy
6,564
+2,953
+82% +$8.63K ﹤0.01% 3492
2023
Q2 		$10.1K Buy
3,611
+917
+34% +$2.54K ﹤0.01% 4171
2023
Q1 		$9K Sell
2,694
-11,548
-81% -$42.2K ﹤0.01% 4531
2022
Q4 		$39K Buy
14,242
+2,836
+25% +$7.35K ﹤0.01% 2533
2022
Q3 		$25K Buy
11,406
+8,369
+276% +$26.5K ﹤0.01% 3765
2022
Q2 		$9K Buy
3,037
+1,740
+134% +$5.25K ﹤0.01% 4579
2022
Q1 		$4K Sell
1,297
-1,051
-45% -$4.31K ﹤0.01% 5240
2021
Q4 		$14K Sell
2,348
-3,460
-60% -$20.5K ﹤0.01% 4098
2021
Q3 		$35K Buy
5,808
+3,204
+123% +$21.6K ﹤0.01% 3244
2021
Q2 		$20K Sell
2,604
-8,471
-76% -$64.8K ﹤0.01% 3892
2021
Q1 		$91K Sell
11,075
-12,022
-52% -$99.5K ﹤0.01% 2661
2020
Q4 		$152K Sell
23,097
-52,313
-69% -$276K ﹤0.01% 1967
2020
Q3 		$292K Buy
75,410
+62,150
+469% +$262K ﹤0.01% 2213
2020
Q2 		$52K Buy
+13,260
New +$48.2K ﹤0.01% 3013
2019
Q4 		– Sell
-881
Closed -$5K – 4220
2019
Q3 		$5K Sell
881
-1,627
-65% -$8.55K ﹤0.01% 3333
2019
Q2 		$12K Buy
2,508
+1,018
+68% +$4.97K ﹤0.01% 2461
2019
Q1 		$8K Buy
1,490
+1,487
+49,567% +$7.96K ﹤0.01% 2821
2018
Q4 		$0 Buy
+3
New +$17 ﹤0.01% 4258
2018
Q3 		– Sell
-284
Closed -$2K – 4161
2018
Q2 		$2K Sell
284
-25,023
-99% -$147K ﹤0.01% 3362
2018
Q1 		$129K Buy
25,307
+16,859
+200% +$109K 0.01% 1110
2017
Q4 		$65K Sell
8,448
-3,436
-29% -$26.4K 0.01% 1136
2017
Q3 		$91K Buy
+11,884
New +$85K 0.01% 1452
2017
Q1 		– Sell
-5,708
Closed -$36K – 3756
2016
Q4 		$36K Buy
+5,708
New +$37.5K ﹤0.01% 1657
2016
Q3 		– Sell
-183
Closed -$2K – 4282
2016
Q2 		$2K Buy
183
+26
+17% +$217 ﹤0.01% 3947
2016
Q1 		$1K Sell
157
-46
-23% -$307 ﹤0.01% 3759
2015
Q4 		$1K Sell
203
-2,140
-91% -$14.4K ﹤0.01% 4144
2015
Q3 		$13K Buy
2,343
+1,643
+235% +$11.1K ﹤0.01% 2102
2015
Q2 		$5K Sell
700
-8,036
-92% -$63K ﹤0.01% 3259
2015
Q1 		$69K Buy
8,736
+7,128
+443% +$117K 0.01% 1210
2014
Q4 		$32K Buy
1,608
+1,488
+1,240% +$26.3K ﹤0.01% 1298
2014
Q3 		$2K Sell
120
-1,608
-93% -$30.7K ﹤0.01% 3850
2014
Q2 		$31K Sell
1,728
-641
-27% -$10.8K ﹤0.01% 1581
2014
Q1 		$39K Buy
2,369
+2,126
+875% +$35.3K 0.01% 1278
2013
Q4 		$4K Sell
243
-1,046
-81% -$16.1K ﹤0.01% 3697
2013
Q3 		$22K Buy
+1,289
New +$21.9K ﹤0.01% 2619

Other funds holding RBBN

JP Morgan Chase
JP Morgan Chase New York $1.56T AUM 27.86% 1-Year Est. Return
Neuberger Berman Group
Neuberger Berman Group New York $131B AUM 28.36% 1-Year Est. Return
PCMI
Paradigm Capital Management Inc Albany, New York $2.61B AUM 78.58% 1-Year Est. Return
BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
Dimensional Fund Advisors
Dimensional Fund Advisors Austin, Texas $481B AUM 30.42% 1-Year Est. Return
RA
Royce & Associates New York $10.1B AUM 42.88% 1-Year Est. Return
VCM
Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM
VPM
Vanguard Portfolio Management Malvern, Pennsylvania $1.91T AUM
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return
Connor, Clark & Lunn Investment Management (CC&L)
Connor, Clark & Lunn Investment Management (CC&L) Vancouver, British Columbia, Canada $43.4B AUM 51.29% 1-Year Est. Return

Tower Research Capital (TRC)'s RBBN Position: Q1 2026 in Review

Tower Research Capital (TRC) reduced its Ribbon Communications (RBBN) stake by 49% in Q1 2026, selling an estimated $17.3K and leaving 7,558 shares worth $16K. The position accounts for ﹤0.01% of the portfolio, ranked #3639.

Tower Research Capital (TRC) first reported a position in RBBN in Q3 2013 and has held it in 45 quarters since. The position peaked at $292K in Q3 2020. 150 funds tracked by Wall St. Rank hold RBBN as of Q1 2026.

  • Tower Research Capital (TRC) held 7,558 shares of Ribbon Communications worth $16K as of Q1 2026.
  • Tower Research Capital (TRC) sold 7,229 Ribbon Communications shares in Q1 2026, an estimated $17.3K.
  • Ribbon Communications made up ﹤0.01% of Tower Research Capital (TRC)'s portfolio in Q1 2026, its #3639 holding.
  • Tower Research Capital (TRC) first reported a position in Ribbon Communications in Q3 2013 and has held it in 45 quarters since.
  • Tower Research Capital (TRC)'s Ribbon Communications position peaked at $292K in Q3 2020.
  • 150 funds tracked by Wall St. Rank held Ribbon Communications as of Q1 2026.

Based on Tower Research Capital (TRC)'s 13F filing for Q1 2026, filed 15 May 2026.