XT
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XTX Topco’s Ribbon Communications RBBN Stock Holding History

XTX Topco’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 		$341K Buy
160,942
+58,057
+56% +$139K 0.01% 2373
2025
Q4 		$296K Sell
102,885
-47,473
-32% -$153K 0.01% 2082
2025
Q3 		$571K Buy
150,358
+92,363
+159% +$363K 0.03% 970
2025
Q2 		$233K Sell
57,995
-99,833
-63% -$360K 0.01% 1601
2025
Q1 		$619K Buy
+157,828
New +$665K 0.03% 865
2024
Q3 		– Sell
-79,802
Closed -$263K – 2505
2024
Q2 		$263K Buy
79,802
+4,746
+6% +$14.4K 0.02% 1048
2024
Q1 		$240K Buy
75,056
+64,352
+601% +$196K 0.03% 1030
2023
Q4 		$31K Sell
10,704
-57,949
-84% -$131K 0.01% 1304
2023
Q3 		$184K Sell
68,653
-75,363
-52% -$220K 0.03% 1043
2023
Q2 		$402K Buy
144,016
+16,911
+13% +$46.9K 0.07% 517
2023
Q1 		$435K Sell
127,105
-58,109
-31% -$212K 0.09% 381
2022
Q4 		$517K Buy
185,214
+109,557
+145% +$284K 0.11% 284
2022
Q3 		$168K Buy
75,657
+38,920
+106% +$123K 0.04% 838
2022
Q2 		$112K Sell
36,737
-39,257
-52% -$119K 0.05% 619
2022
Q1 		$235K Buy
+75,994
New +$311K 0.1% 361
2021
Q2 		– Sell
-13,723
Closed -$113K – 1040
2021
Q1 		$113K Buy
+13,723
New +$114K 0.05% 555

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

XTX Topco's RBBN Position: Q1 2026 in Review

XTX Topco increased its Ribbon Communications (RBBN) stake by 56% in Q1 2026, buying an estimated $139K and bringing the position to 160,942 shares worth $341K. The position accounts for 0.01% of the portfolio, ranked #2373.

XTX Topco first reported a position in RBBN in Q1 2021 and has held it in 16 quarters since. The position peaked at $619K in Q1 2025. 150 funds tracked by Wall St. Rank hold RBBN as of Q1 2026.

  • XTX Topco held 160,942 shares of Ribbon Communications worth $341K as of Q1 2026.
  • XTX Topco bought 58,057 Ribbon Communications shares in Q1 2026, an estimated $139K.
  • Ribbon Communications made up 0.01% of XTX Topco's portfolio in Q1 2026, its #2373 holding.
  • XTX Topco first reported a position in Ribbon Communications in Q1 2021 and has held it in 16 quarters since.
  • XTX Topco's Ribbon Communications position peaked at $619K in Q1 2025.
  • 150 funds tracked by Wall St. Rank held Ribbon Communications as of Q1 2026.

Based on XTX Topco's 13F filing for Q1 2026, filed 15 May 2026.