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
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

D.E. Shaw & Co's RBBN Position: Q2 2026 in Review

D.E. Shaw & Co 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.

D.E. Shaw & Co 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. 161 funds tracked by Wall St. Rank hold RBBN as of Q2 2026.

  • D.E. Shaw & Co held 1,790,375 shares of Ribbon Communications worth $4.19M as of Q2 2026.
  • D.E. Shaw & Co bought 251,903 Ribbon Communications shares in Q2 2026, an estimated $665K.
  • Ribbon Communications made up ﹤0.01% of D.E. Shaw & Co's portfolio in Q2 2026, its #2553 holding.
  • D.E. Shaw & Co first reported a position in Ribbon Communications in Q2 2013 and has held it in 51 quarters since.
  • D.E. Shaw & Co's Ribbon Communications position peaked at $9.5M in Q2 2016.
  • 161 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.