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Two Sigma Securities’s Ribbon Communications RBBN Stock Holding History

Two Sigma Securities’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 		$48.7K Sell
22,964
-7,782
-25% -$18.6K 0.01% 1270
2025
Q4 		$88.5K Buy
+30,746
New +$99.2K 0.01% 994
2019
Q4 		– Sell
-16,289
Closed -$95K – 2595
2019
Q3 		$95K Buy
+16,289
New +$85.6K ﹤0.01% 1947
2018
Q1 		– Sell
-20,641
Closed -$160K – 2906
2017
Q4 		$160K Buy
+20,641
New +$158K ﹤0.01% 1369

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

Two Sigma Securities's RBBN Position: Q1 2026 in Review

Two Sigma Securities reduced its Ribbon Communications (RBBN) stake by 25% in Q1 2026, selling an estimated $18.6K and leaving 22,964 shares worth $48.7K. The position accounts for 0.01% of the portfolio, ranked #1270.

Two Sigma Securities first reported a position in RBBN in Q4 2017 and has held it in 4 quarters since. The position peaked at $160K in Q4 2017. 150 funds tracked by Wall St. Rank hold RBBN as of Q1 2026.

  • Two Sigma Securities held 22,964 shares of Ribbon Communications worth $48.7K as of Q1 2026.
  • Two Sigma Securities sold 7,782 Ribbon Communications shares in Q1 2026, an estimated $18.6K.
  • Ribbon Communications made up 0.01% of Two Sigma Securities's portfolio in Q1 2026, its #1270 holding.
  • Two Sigma Securities first reported a position in Ribbon Communications in Q4 2017 and has held it in 4 quarters since.
  • Two Sigma Securities's Ribbon Communications position peaked at $160K in Q4 2017.
  • 150 funds tracked by Wall St. Rank held Ribbon Communications as of Q1 2026.

Based on Two Sigma Securities's 13F filing for Q1 2026, filed 15 May 2026.