Citigroup
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Citigroup’s Ribbon Communications RBBN Stock Holding History

Citigroup’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
2016
Q1 		– Sell
-800
Closed -$6K – 7708
2015
Q4 		$6K Sell
800
-1,000
-56% -$6.71K ﹤0.01% 6981
2015
Q3 		$10K Buy
1,800
+900
+100% +$6.07K ﹤0.01% 6430
2015
Q2 		$6K Buy
+900
New +$7.06K ﹤0.01% 6690

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

Citigroup's RBBN Position: Q1 2026 in Review

Citigroup increased its Ribbon Communications (RBBN) stake by 9.7% in Q1 2026, buying an estimated $7.72K and bringing the position to 36,567 shares worth $77.5K. The position accounts for ﹤0.01% of the portfolio, ranked #4371.

Citigroup first reported a position in RBBN in Q2 2013 and has held it in 52 quarters since. The position peaked at $946K in Q2 2021. 150 funds tracked by Wall St. Rank hold RBBN as of Q1 2026.

  • Citigroup held 36,567 shares of Ribbon Communications worth $77.5K as of Q1 2026.
  • Citigroup bought 3,227 Ribbon Communications shares in Q1 2026, an estimated $7.72K.
  • Ribbon Communications made up ﹤0.01% of Citigroup's portfolio in Q1 2026, its #4371 holding.
  • Citigroup first reported a position in Ribbon Communications in Q2 2013 and has held it in 52 quarters since.
  • Citigroup's Ribbon Communications position peaked at $946K in Q2 2021.
  • 150 funds tracked by Wall St. Rank held Ribbon Communications as of Q1 2026.

Based on Citigroup's 13F filing for Q1 2026, filed 11 May 2026.