JY
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Jeff Yass’s Ribbon Communications RBBN Stock Holding History

Jeff Yass’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
2024
Q3 		– Sell
-20,900
Closed -$68.8K – 12846
2024
Q2 		$68.8K Sell
20,900
-16,100
-44% -$49K ﹤0.01% 11261
2024
Q1 		$118K Buy
37,000
+9,400
+34% +$28.6K ﹤0.01% 11104
2023
Q4 		$80K Sell
27,600
-900
-3% -$2.03K ﹤0.01% 11477
2023
Q3 		$76.4K Buy
28,500
+800
+3% +$2.34K ﹤0.01% 11095
2023
Q2 		$77.3K Buy
+27,700
New +$76.9K ﹤0.01% 11124
2021
Q3 		– Sell
-278,200
Closed -$2.12M – 13410
2021
Q2 		$2.12M Sell
278,200
-263,900
-49% -$2.02M ﹤0.01% 5788
2021
Q1 		$4.45M Buy
542,100
+469,600
+648% +$3.89M ﹤0.01% 4138
2020
Q4 		$476K Buy
+72,500
New +$383K ﹤0.01% 8395
2019
Q4 		– Sell
-23,100
Closed -$135K – 10451
2019
Q3 		$135K Buy
23,100
+3,600
+18% +$18.9K ﹤0.01% 9390
2019
Q2 		$95K Sell
19,500
-9,000
-32% -$44K ﹤0.01% 9623
2019
Q1 		$147K Sell
28,500
-61,000
-68% -$327K ﹤0.01% 8065
2018
Q4 		$431K Buy
+89,500
New +$519K ﹤0.01% 6315
2016
Q3 		– Sell
-29,700
Closed -$258K – 8911
2016
Q2 		$258K Buy
+29,700
New +$247K ﹤0.01% 7208
2015
Q3 		– Sell
-117,400
Closed -$812K – 10061
2015
Q2 		$812K Buy
117,400
+50,400
+75% +$395K ﹤0.01% 6633
2015
Q1 		$528K Buy
67,000
+64,740
+2,865% +$1.07M ﹤0.01% 6994
2014
Q4 		$45K Sell
2,260
-5,080
-69% -$89.9K ﹤0.01% 9381
2014
Q3 		$126K Sell
7,340
-4,480
-38% -$85.5K ﹤0.01% 8989
2014
Q2 		$212K Sell
11,820
-25,820
-69% -$437K ﹤0.01% 8961
2014
Q1 		$634K Buy
37,640
+1,760
+5% +$29.3K ﹤0.01% 6339
2013
Q4 		$565K Buy
+35,880
New +$554K ﹤0.01% 6500
2013
Q3 		– Sell
-2,600
Closed -$39K – 8700
2013
Q2 		$39K Buy
+2,600
New +$34.7K ﹤0.01% 8024

Other funds holding RBBN

JP Morgan Chase
JP Morgan Chase New York $1.81T AUM 41.13% 1-Year Est. Return
Neuberger Berman Group
Neuberger Berman Group New York $150B AUM 40.08% 1-Year Est. Return
BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
Dimensional Fund Advisors
Dimensional Fund Advisors Austin, Texas $552B AUM 44.19% 1-Year Est. Return
RA
Royce & Associates New York $12.4B AUM 64.17% 1-Year Est. Return
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
Vanguard Portfolio Management
Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM
PCMI
Paradigm Capital Management Inc Albany, New York $3.67B AUM 121.12% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return
Connor, Clark & Lunn Investment Management (CC&L)
Connor, Clark & Lunn Investment Management (CC&L) Vancouver, British Columbia, Canada $52.8B AUM 58.98% 1-Year Est. Return

Jeff Yass's RBBN Position: Q2 2026 in Review

Jeff Yass reduced its Ribbon Communications (RBBN) stake by 9.7% in Q2 2026, selling an estimated $13.3K and leaving 47,175 shares worth $110K. The position accounts for ﹤0.01% of the portfolio, ranked #12428.

Jeff Yass first reported a position in RBBN in Q2 2013 and has held it in 41 quarters since. The position peaked at $3.22M in Q1 2021. 159 funds tracked by Wall St. Rank hold RBBN as of Q2 2026.

  • Jeff Yass held 47,175 shares of Ribbon Communications worth $110K as of Q2 2026.
  • Jeff Yass sold 5,056 Ribbon Communications shares in Q2 2026, an estimated $13.3K.
  • Ribbon Communications made up ﹤0.01% of Jeff Yass's portfolio in Q2 2026, its #12428 holding.
  • Jeff Yass first reported a position in Ribbon Communications in Q2 2013 and has held it in 41 quarters since.
  • Jeff Yass's Ribbon Communications position peaked at $3.22M in Q1 2021.
  • 159 funds tracked by Wall St. Rank held Ribbon Communications as of Q2 2026.

Based on Susquehanna International Group's 13F filing for Q2 2026, filed 14 Aug 2026.