Ticker · CUSIP 762544104

RBBN

RIBBON COMMUNICATIONS INC
···Share
Holders (tracked)
7
Combined shares
2,528,855
Combined value
$7.08M
Last close
Quarter
2025Q4
Tracked holders · last 8 quarters
Flat over the last 8 quarters.
772024Q12025Q4

SEC event timeline

15 events
  1. −1,651 shares · 2025Q4
    13F
  2. +390,949 shares · 2025Q4
    13F
  3. +54,306 shares · 2025Q4
    13F
  4. +9,103 shares · 2025Q4
    13F
  5. +322,364 shares · 2025Q4
    13F
  6. −14,016 shares · 2025Q4
    13F
  7. −38,800 shares · 2025Q4
    13F
  8. −171,386 shares · 2025Q4
    13F
  9. −830,148 shares · 2025Q3
    13F
  10. +580 shares · 2025Q3
    13F
  11. +172,205 shares · 2025Q3
    13F
  12. +10,189 shares · 2025Q3
    13F
  13. −55,993 shares · 2025Q3
    13F
  14. +11,300 shares · 2025Q3
    13F
  15. +8,000 shares · 2025Q3
    13F

Insider activity

No insider transactions in the last 30 days.

Who moved on this name in 2025Q4

13F transactions reported for the latest quarter, grouped by direction.
New positions1
Added to3
Exited1

Institutional ownership over time

Distinct super-investors holding this ticker · combined dollar value, by quarter.
QuarterHoldersCombined value
2022Q1
10
$26.8M
2022Q2
9
$24.0M
2022Q3
9
$15K
2022Q4
10
$20.1M
2023Q1
10
$27.6M
2023Q2
11
$24.4M
2023Q3
9
$21.9M
2023Q4
7
$22.5M
2024Q1
7
$23.6M
2024Q2
9
$27.2M
2024Q3
8
$1.9M
2024Q4
8
$6.1M
2025Q1
8
$7.5M
2025Q2
7
$10.2M
2025Q3
7
$7.3M
2025Q4
7
$7.1M

Who owns RBBN

7 super-investors · 2025Q4
Tracked stake
2.53M
shares
Combined value
$7M
% of shares outstanding
shares-out unknown
Quarter action mix
New1Added3Trim3
#ManagerSharesValue
1D.E. Shaw & Co.979.8K$3M
2First Eagle Investment Management862.5K$2M
3AQR Capital Management491.5K$1M
4Izzy Englander
Millennium Mgmt
54.3K$156K
5Ken Griffin
Citadel Advisors
53.9K$155K
6Two Sigma Investments17.0K$49K
7T. Rowe Price69.8K$202

Recent moves

20 transactions
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