GI
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GAMMA Investing’s Ribbon Communications RBBN Stock Holding History

GAMMA Investing’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 		– Sell
-52
Closed -$150 – 4209
2025
Q4 		$150 Buy
52
+42
+420% +$136 ﹤0.01% 4031
2025
Q3 		$38 Hold
10
– – ﹤0.01% 3838
2025
Q2 		$40 Buy
+10
New +$36 ﹤0.01% 3763

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

GAMMA Investing's RBBN Position: Q1 2026 in Review

GAMMA Investing sold out of Ribbon Communications (RBBN) in Q1 2026, closing a stake of 52 shares — an estimated $150 sold.

GAMMA Investing first reported a position in RBBN in Q2 2025 and held it in 3 quarters. The position peaked at $150 in Q4 2025. 150 funds tracked by Wall St. Rank hold RBBN as of Q1 2026.

  • GAMMA Investing reported no remaining Ribbon Communications position as of Q1 2026 after selling out during the quarter.
  • GAMMA Investing sold 52 Ribbon Communications shares in Q1 2026, an estimated $150.
  • GAMMA Investing first reported a position in Ribbon Communications in Q2 2025 and held it in 3 quarters.
  • GAMMA Investing's Ribbon Communications position peaked at $150 in Q4 2025.
  • 150 funds tracked by Wall St. Rank held Ribbon Communications as of Q1 2026.

Based on GAMMA Investing's 13F filing for Q1 2026, filed 6 Apr 2026.