Arrowstreet Capital
RBBN icon

Arrowstreet Capital’s Ribbon Communications RBBN Stock Holding History

Arrowstreet Capital’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 		$2.58M Buy
1,216,876
+187,160
+18% +$448K ﹤0.01% 1341
2025
Q4 		$2.97M Buy
1,029,716
+65,270
+7% +$211K ﹤0.01% 1283
2025
Q3 		$3.66M Buy
964,446
+481,276
+100% +$1.89M ﹤0.01% 1279
2025
Q2 		$1.94M Sell
483,170
-73,154
-13% -$264K ﹤0.01% 1444
2025
Q1 		$2.18M Sell
556,324
-33,432
-6% -$141K ﹤0.01% 1274
2024
Q4 		$2.45M Sell
589,756
-100,314
-15% -$379K ﹤0.01% 1225
2024
Q3 		$2.24M Sell
690,070
-35,203
-5% -$114K ﹤0.01% 1203
2024
Q2 		$2.39M Sell
725,273
-83,980
-10% -$255K ﹤0.01% 1031
2024
Q1 		$2.59M Buy
809,253
+184,900
+30% +$563K ﹤0.01% 1069
2023
Q4 		$1.81M Sell
624,353
-423,093
-40% -$953K ﹤0.01% 987
2023
Q3 		$2.81M Sell
1,047,446
-23,696
-2% -$69.2K ﹤0.01% 776
2023
Q2 		$2.99M Buy
1,071,142
+168,886
+19% +$469K ﹤0.01% 738
2023
Q1 		$3.09M Buy
902,256
+434,742
+93% +$1.59M ﹤0.01% 810
2022
Q4 		$1.3M Hold
467,514
– – ﹤0.01% 967
2022
Q3 		$1.04M Buy
467,514
+37,142
+9% +$118K ﹤0.01% 987
2022
Q2 		$1.31M Buy
430,372
+150,657
+54% +$455K ﹤0.01% 881
2022
Q1 		$864K Sell
279,715
-81,975
-23% -$336K ﹤0.01% 958
2021
Q4 		$2.19M Sell
361,690
-382,018
-51% -$2.27M ﹤0.01% 1000
2021
Q3 		$4.45M Sell
743,708
-311,148
-29% -$2.1M 0.01% 964
2021
Q2 		$8.03M Buy
1,054,856
+216,895
+26% +$1.66M 0.01% 911
2021
Q1 		$6.88M Buy
837,961
+120,754
+17% +$999K 0.01% 1032
2020
Q4 		$4.71M Buy
717,207
+53,696
+8% +$284K 0.01% 1219
2020
Q3 		$2.57M Sell
663,511
-129,270
-16% -$545K ﹤0.01% 1460
2020
Q2 		$3.12M Hold
792,781
– – 0.01% 1264
2020
Q1 		$2.4M Buy
792,781
+69,755
+10% +$210K 0.01% 995
2019
Q4 		$2.24M Buy
723,026
+269,826
+60% +$1.07M 0.01% 1108
2019
Q3 		$2.65M Buy
453,200
+262,884
+138% +$1.38M 0.01% 895
2019
Q2 		$931K Sell
190,316
-312,104
-62% -$1.52M ﹤0.01% 1080
2019
Q1 		$2.59M Buy
502,420
+328,093
+188% +$1.76M 0.01% 1023
2018
Q4 		$840K Buy
+174,327
New +$1.01M ﹤0.01% 1000
2018
Q2 		– Sell
-221,148
Closed -$1.13M – 1271
2018
Q1 		$1.13M Buy
221,148
+94,502
+75% +$611K ﹤0.01% 847
2017
Q4 		$979K Buy
126,646
+96,787
+324% +$743K ﹤0.01% 963
2017
Q3 		$228K Sell
29,859
-268,132
-90% -$1.92M ﹤0.01% 1034
2017
Q2 		$2.22M Sell
297,991
-87,566
-23% -$645K 0.01% 633
2017
Q1 		$2.54M Buy
+385,557
New +$2.44M 0.01% 744
2016
Q4 		– Sell
-522,814
Closed -$4.07M – 2352
2016
Q3 		$4.07M Sell
522,814
-13,132
-2% -$115K 0.01% 708
2016
Q2 		$4.66M Buy
535,946
+40,044
+8% +$333K 0.02% 604
2016
Q1 		$3.73M Sell
495,902
-17,755
-3% -$119K 0.02% 623
2015
Q4 		$3.66M Buy
513,657
+30,874
+6% +$207K 0.02% 631
2015
Q3 		$2.76M Buy
482,783
+18,200
+4% +$123K 0.01% 673
2015
Q2 		$3.21M Buy
464,583
+245,554
+112% +$1.93M 0.02% 525
2015
Q1 		$1.73M Buy
219,029
+204,919
+1,452% +$3.38M 0.01% 620
2014
Q4 		$280K Buy
+14,110
New +$250K ﹤0.01% 1145
2014
Q2 		– Sell
-151,527
Closed -$2.55M – 1143
2014
Q1 		$2.55M Buy
+151,527
New +$2.52M 0.02% 600

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

Arrowstreet Capital's RBBN Position: Q1 2026 in Review

Arrowstreet Capital increased its Ribbon Communications (RBBN) stake by 18% in Q1 2026, buying an estimated $448K and bringing the position to 1,216,876 shares worth $2.58M. The position accounts for ﹤0.01% of the portfolio, ranked #1341.

Arrowstreet Capital first reported a position in RBBN in Q1 2014 and has held it in 44 quarters since. The position peaked at $8.03M in Q2 2021. 150 funds tracked by Wall St. Rank hold RBBN as of Q1 2026.

  • Arrowstreet Capital held 1,216,876 shares of Ribbon Communications worth $2.58M as of Q1 2026.
  • Arrowstreet Capital bought 187,160 Ribbon Communications shares in Q1 2026, an estimated $448K.
  • Ribbon Communications made up ﹤0.01% of Arrowstreet Capital's portfolio in Q1 2026, its #1341 holding.
  • Arrowstreet Capital first reported a position in Ribbon Communications in Q1 2014 and has held it in 44 quarters since.
  • Arrowstreet Capital's Ribbon Communications position peaked at $8.03M in Q2 2021.
  • 150 funds tracked by Wall St. Rank held Ribbon Communications as of Q1 2026.

Based on Arrowstreet Capital's 13F filing for Q1 2026, filed 14 May 2026.