D.E. Shaw & Co
RBBN icon

D.E. Shaw & Co’s Ribbon Communications RBBN Stock Holding History

D.E. Shaw & Co’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 		$3.26M Buy
1,538,472
+558,631
+57% +$1.34M ﹤0.01% 2519
2025
Q4 		$2.82M Buy
979,841
+390,949
+66% +$1.26M ﹤0.01% 2770
2025
Q3 		$2.24M Buy
588,892
+172,205
+41% +$677K ﹤0.01% 2884
2025
Q2 		$1.67M Hold
416,687
– – ﹤0.01% 2872
2025
Q1 		$1.63M Sell
416,687
-52,812
-11% -$223K ﹤0.01% 2754
2024
Q4 		$1.95M Buy
469,499
+84,999
+22% +$321K ﹤0.01% 2755
2024
Q3 		$1.25M Sell
384,500
-79,031
-17% -$256K ﹤0.01% 3103
2024
Q2 		$1.53M Buy
463,531
+101,467
+28% +$309K ﹤0.01% 2894
2024
Q1 		$1.16M Sell
362,064
-68,548
-16% -$209K ﹤0.01% 2997
2023
Q4 		$1.25M Sell
430,612
-103,028
-19% -$232K ﹤0.01% 2986
2023
Q3 		$1.43M Sell
533,640
-177,484
-25% -$518K ﹤0.01% 2836
2023
Q2 		$1.98M Sell
711,124
-256,183
-26% -$711K ﹤0.01% 2626
2023
Q1 		$3.31M Buy
967,307
+120,528
+14% +$441K ﹤0.01% 2301
2022
Q4 		$2.36M Sell
846,779
-40,010
-5% -$104K ﹤0.01% 2810
2022
Q3 		$1.97M Sell
886,789
-14,899
-2% -$47.2K ﹤0.01% 3030
2022
Q2 		$2.74M Sell
901,688
-57,600
-6% -$174K ﹤0.01% 2793
2022
Q1 		$2.96M Buy
959,288
+491,397
+105% +$2.01M ﹤0.01% 2910
2021
Q4 		$2.83M Buy
467,891
+60,973
+15% +$362K ﹤0.01% 3027
2021
Q3 		$2.43M Buy
406,918
+9,897
+2% +$66.8K ﹤0.01% 2852
2021
Q2 		$3.02M Sell
397,021
-188,983
-32% -$1.45M ﹤0.01% 2518
2021
Q1 		$4.81M Sell
586,004
-209,293
-26% -$1.73M ﹤0.01% 1881
2020
Q4 		$5.22M Sell
795,297
-30,201
-4% -$159K ﹤0.01% 1841
2020
Q3 		$3.19M Sell
825,498
-227,627
-22% -$960K ﹤0.01% 2024
2020
Q2 		$4.14M Sell
1,053,125
-87,515
-8% -$318K ﹤0.01% 1795
2020
Q1 		$3.46M Sell
1,140,640
-98,401
-8% -$296K 0.01% 1741
2019
Q4 		$3.84M Buy
1,239,041
+205,740
+20% +$819K ﹤0.01% 1942
2019
Q3 		$6.03M Sell
1,033,301
-108,442
-9% -$570K 0.01% 1504
2019
Q2 		$5.58M Buy
1,141,743
+131,472
+13% +$642K 0.01% 1515
2019
Q1 		$5.2M Buy
1,010,271
+102,139
+11% +$547K 0.01% 1520
2018
Q4 		$4.38M Buy
908,132
+12,453
+1% +$72.2K 0.01% 1596
2018
Q3 		$6.12M Sell
895,679
-112,864
-11% -$804K 0.01% 1437
2018
Q2 		$7.18M Sell
1,008,543
-60,725
-6% -$356K 0.01% 1289
2018
Q1 		$5.45M Sell
1,069,268
-47,554
-4% -$308K 0.01% 1352
2017
Q4 		$8.63M Sell
1,116,822
-50,217
-4% -$386K 0.01% 1120
2017
Q3 		$8.93M Buy
1,167,039
+27,964
+2% +$200K 0.01% 1016
2017
Q2 		$8.47M Buy
1,139,075
+67,739
+6% +$499K 0.01% 995
2017
Q1 		$7.06M Buy
1,071,336
+148,097
+16% +$938K 0.01% 1062
2016
Q4 		$5.82M Sell
923,239
-54,199
-6% -$356K 0.01% 1265
2016
Q3 		$7.61M Sell
977,438
-115,336
-11% -$1.01M 0.01% 1044
2016
Q2 		$9.5M Sell
1,092,774
-76,258
-7% -$635K 0.02% 926
2016
Q1 		$8.8M Buy
1,169,032
+492,661
+73% +$3.29M 0.02% 934
2015
Q4 		$4.82M Buy
676,371
+239,514
+55% +$1.61M 0.01% 1429
2015
Q3 		$2.5M Buy
436,857
+21,089
+5% +$142K ﹤0.01% 1929
2015
Q2 		$2.88M Buy
415,768
+4,622
+1% +$36.2K ﹤0.01% 1905
2015
Q1 		$3.24M Buy
411,146
+113,729
+38% +$1.87M 0.01% 1682
2014
Q4 		$5.9M Buy
297,417
+143,256
+93% +$2.53M 0.01% 1445
2014
Q3 		$2.64M Sell
154,161
-66,246
-30% -$1.26M ﹤0.01% 2029
2014
Q2 		$3.96M Buy
220,407
+68,507
+45% +$1.16M 0.01% 1787
2014
Q1 		$2.56M Buy
+151,900
New +$2.53M ﹤0.01% 2144
2013
Q3 		– Sell
-54,805
Closed -$825K – 4427
2013
Q2 		$825K Buy
+54,805
New +$731K ﹤0.01% 2872

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

D.E. Shaw & Co's RBBN Position: Q1 2026 in Review

D.E. Shaw & Co increased its Ribbon Communications (RBBN) stake by 57% in Q1 2026, buying an estimated $1.34M and bringing the position to 1,538,472 shares worth $3.26M. The position accounts for ﹤0.01% of the portfolio, ranked #2519.

D.E. Shaw & Co first reported a position in RBBN in Q2 2013 and has held it in 50 quarters since. The position peaked at $9.5M in Q2 2016. 150 funds tracked by Wall St. Rank hold RBBN as of Q1 2026.

  • D.E. Shaw & Co held 1,538,472 shares of Ribbon Communications worth $3.26M as of Q1 2026.
  • D.E. Shaw & Co bought 558,631 Ribbon Communications shares in Q1 2026, an estimated $1.34M.
  • Ribbon Communications made up ﹤0.01% of D.E. Shaw & Co's portfolio in Q1 2026, its #2519 holding.
  • D.E. Shaw & Co first reported a position in Ribbon Communications in Q2 2013 and has held it in 50 quarters since.
  • D.E. Shaw & Co's Ribbon Communications position peaked at $9.5M in Q2 2016.
  • 150 funds tracked by Wall St. Rank held Ribbon Communications as of Q1 2026.

Based on D.E. Shaw & Co's 13F filing for Q1 2026, filed 15 May 2026.