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Round Rock Advisors’s Ribbon Communications RBBN Stock Holding History

Round Rock Advisors’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
2025
Q4 		– Sell
-74,240
Closed -$256K – 354
2025
Q3 		$256K Buy
+74,240
New +$292K 0.04% 274

Other funds holding RBBN

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PCMI
Paradigm Capital Management Inc Albany, New York $2.61B AUM 78.58% 1-Year Est. Return
Vanguard Group
Vanguard Group Malvern, Pennsylvania $6.9T AUM 27.45% 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
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $2.9T AUM 29.55% 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

Round Rock Advisors's RBBN Position: Q4 2025 in Review

Round Rock Advisors sold out of Ribbon Communications (RBBN) in Q4 2025, closing a stake of 74,240 shares — an estimated $256K sold.

Round Rock Advisors first reported a position in RBBN in Q3 2025 and held it in 1 quarter. The position peaked at $256K in Q3 2025. 153 funds tracked by Wall St. Rank hold RBBN as of Q4 2025.

  • Round Rock Advisors reported no remaining Ribbon Communications position as of Q4 2025 after selling out during the quarter.
  • Round Rock Advisors sold 74,240 Ribbon Communications shares in Q4 2025, an estimated $256K.
  • Round Rock Advisors first reported a position in Ribbon Communications in Q3 2025 and held it in 1 quarter.
  • Round Rock Advisors's Ribbon Communications position peaked at $256K in Q3 2025.
  • 153 funds tracked by Wall St. Rank held Ribbon Communications as of Q4 2025.

Based on Round Rock Advisors's 13F filing for Q4 2025, filed 27 Jan 2026.