DS
RBBN icon

David Shaw’s Ribbon Communications RBBN Stock Holding History

David Shaw’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
2015
Q4 		– Sell
-50,000
Closed -$286K – 3954
2015
Q3 		$286K Hold
50,000
– – ﹤0.01% 3368
2015
Q2 		$346K Buy
+50,000
New +$392K ﹤0.01% 3357

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

David Shaw's RBBN Position: Q2 2026 in Review

David Shaw increased its Ribbon Communications (RBBN) stake by 16% in Q2 2026, buying an estimated $665K and bringing the position to 1,790,375 shares worth $4.19M. The position accounts for ﹤0.01% of the portfolio, ranked #2553.

David Shaw first reported a position in RBBN in Q2 2013 and has held it in 51 quarters since. The position peaked at $9.5M in Q2 2016. 159 funds tracked by Wall St. Rank hold RBBN as of Q2 2026.

  • David Shaw held 1,790,375 shares of Ribbon Communications worth $4.19M as of Q2 2026.
  • David Shaw bought 251,903 Ribbon Communications shares in Q2 2026, an estimated $665K.
  • Ribbon Communications made up ﹤0.01% of David Shaw's portfolio in Q2 2026, its #2553 holding.
  • David Shaw first reported a position in Ribbon Communications in Q2 2013 and has held it in 51 quarters since.
  • David Shaw's Ribbon Communications position peaked at $9.5M in Q2 2016.
  • 159 funds tracked by Wall St. Rank held Ribbon Communications as of Q2 2026.

Based on D.E. Shaw & Co's 13F filing for Q2 2026, filed 14 Aug 2026.