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RBBN

RIBBON COMMUNICATIONS INC.
Latest close $2.644 of 27 marquee funds currently hold1 CUSIP mapped
Current holders
4
27 funds tracked
Ever held
6
Current + past
New this quarter
0
Exited this quarter
1

Marquee-fund ownership over time

Aug 9, 2024Nov 14, 2024Nov 14, 2025May 15, 2026
Now
4

This quarter's activity

New positions opened

None.

Positions exited

Current holders

Sorted by tenure (longest first)
FundEntry priceLatest closeReturn on entry
Citadel Advisors re-entered$2.94$2.64-10%
D.E. Shaw$2.94$2.64-10%
AQR Capital Management re-entered$2.94$2.64-10%
Millennium Management re-entered$2.94$2.64-10%

“Return on entry” is the price-only move from the fund's first disclosure to today — it ignores any adds, trims, or dividends. A fund that built its position over multiple quarters has a true cost basis somewhere between entry price and latest close; this figure is the upper bound.

Past holders

Funds that exited at some point
FundEntry → ExitReturn
Two Sigma Investments 2× in & out→ $2.57-35%
Renaissance Technologies 2× in & out→ $1.95-61%

Insider activity

Form 4 — officers, directors, 10%+ owners

Filed within two business days of each transaction by anyone with material insider status at Ribbon Communications Inc.. Pair with the holders table above as a sanity check: heavy insider buying alongside marquee-fund accumulation is the strongest accumulation signal; heavy insider selling alongside fund exits is the strongest distribution signal.

Filings · last 30d
4
Filings · last 90d
8
Total on file
436
Recent SEC buffer
Most recent
May 19, 2026

30d / 90d windows measured from May 19, 2026 — the most recent Form 4 on file — not from today.

Showing 15 of 436 recent Form 4 filings. Browse all on EDGAR ↗

Fundamentals

XBRL · RIBBON COMMUNICATIONS INC.

Annual figures sourced directly from RIBBON COMMUNICATIONS INC.'s 10-K / 10-Q filings via SEC EDGAR XBRL. Latest fiscal year and the year-over-year change, with up to ten years of history.

Revenue
$844.56M
FY2025+1% YoY
Net income
$39.64M
FY2025+173% YoY
EPS (diluted)
$0.2200
FY2025+171% YoY
Free cash flow(?)
$26.06M
FY2025-6% YoY

Recent SEC filings

10-K · 10-Q · 8-K · 13D/G · proxy

The most recent material filings for Ribbon Communications Inc. — earnings, material events, ownership disclosures, proxy statements. Form 4 insider activity is shown in the panel above.

Trade history

Every open→close lifecycle across tracked funds
FundOpen dateClose dateOpen priceClose price / currentReturn
Millennium ManagementQ1 2026open$2.05$2.64+29%
Citadel AdvisorsQ4 2025open$3.08$2.64-14%
Two Sigma InvestmentsQ3 2025Q2 2026$3.95$2.57-35%
AQR Capital ManagementQ2 2025open$3.62$2.64-27%
Renaissance TechnologiesQ1 2025Q1 2026$5.00$1.95-61%
Citadel AdvisorsQ3 2024Q2 2025$2.94$3.62+23%
Two Sigma InvestmentsQ3 2024Q2 2025$2.94$3.62+23%
D.E. ShawQ3 2024open$2.94$2.64-10%
AQR Capital ManagementQ3 2024Q4 2024$2.94$3.98+35%
Millennium ManagementQ3 2024Q4 2025$2.94$3.08+5%
Renaissance TechnologiesQ3 2024Q4 2024$2.94$4.02+37%
Caveats
  • Covers only the 27 marquee funds tracked here, not the full institutional universe. A “0 holders” reading does not mean unowned.
  • Heavy funds (Renaissance Technologies, Citadel Advisors, Soros Fund Management, Two Sigma Investments, D.E. Shaw, AQR Capital Management, Millennium Management, Point72 Asset Management) use 8-quarter snapshots, so their pre-2024 history is missing.
  • “Current” reflects each fund's most recent 13F — filings lag the actual trade by up to 45 days; positions shown may have changed since.
  • Cost = price at the entry filing date. Re-entered positions show the most recent open lot.
  • Options, ADRs, and unmapped CUSIPs are excluded from the follower-backtest pipeline that produces these snapshots, so certain holding types won't appear here.