13FPulse
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RB

RBBN RIBBON COMMUNICATIONS INC

2026Q2 · CUSIP 762544104 · Networking · Sector: Technology

Normal

Fund flows are within the usual range

Funds that own it
156
Institutions that reported holding it to the SEC
Net increase in holders
+7
Last quarter 149 → now 156
How unusual is that
Above average
Stronger buying than 62% of US stocks
What the filings say, in one paragraph

156 funds held RBBN at the end of 2026Q2, up 7 from the quarter before. Fund flows are within the usual range — nothing unusual. On the business itself, revenue over the last 12 months was $798M(YoY -7.6%), the P/E is 24.5x, return on equity is 4.0%. RBBN has had 2 buying rushes in its history, and the price moved +10.2% on average over the six months after (that is the raw price move, not how much it beat the market by). It sits in the Technology sector, tagged Networking.

How many funds owned it, quarter by quarter

Bars = net change in institutional holders, positive (green) or negative (red). Line = total institutional holders.

2018Q1: holders=121 2018Q2: holders=102 2018Q3: holders=112 2018Q4: holders=117 2019Q1: holders=117 2019Q2: holders=108 2019Q3: holders=123 2019Q4: holders=116 2020Q1: holders=116 2020Q2: holders=112 2020Q3: holders=111 2020Q4: holders=127 2021Q1: holders=145 2021Q2: holders=127 2021Q3: holders=123 2021Q4: holders=128 2022Q1: holders=136 2022Q2: holders=130 2022Q3: holders=129 2022Q4: holders=130 2023Q1: holders=145 2023Q2: holders=127 2023Q3: holders=121 2023Q4: holders=125 2024Q1: holders=132 2024Q2: holders=129 2024Q3: holders=126 2024Q4: holders=133 2025Q1: holders=144 2025Q2: holders=146 2025Q3: holders=154 2025Q4: holders=153 2026Q1: holders=149 2026Q2: holders=156 -19 -9.5 +0 +9.5 +19 91128164 18Q119Q120Q121Q122Q123Q124Q125Q126Q126Q2 Net change in holders (bars) Total funds holding (line)

What happened after each past buying rush 2 times in its history

Quarter of the rush How unusual then Price, next 3 months Price, next 6 months
2023Q1 Top 20% +2.9% +2.5%
2019Q3 Top 20% +16.4% +17.9%

These are the raw price moves, not how much it beat the market by. Compare them against the market over the same months — in a strong bull market almost everything is up.

Show all the numbers (large funds, value held, options…) ▾
Of them, large funds
91
Change in large funds
+12
Total value they hold
$289M
Funds buying for the first time
23
Funds that sold out entirely
16
Price change that quarter
-25.8%
Funds holding puts (bearish)
0
Funds holding calls (bullish)
3

These are for people who want to dig. Skip them if they do not mean anything to you — the three numbers above are enough.

8,697 institutions have filed for this quarter. 13F permits late filing and a small number arrive in the weeks after the deadline, so the holder counts and changes below may tick up.

Fundamentals

PE (TTM)
24.5
EPS (TTM)
$0.08
EPS YoY
—
Revenue (TTM)
$0.8B
Revenue YoY
-7.6%
Net margin
2.0%
ROE
4.0%
Debt ratio
65.6%
FCF (TTM)
$7M
Dividend (TTM)
No dividend
Quarterly Revenue & EPS
2021-09-30: EPS -0.40 2021-12-31: EPS -0.65 2022-03-31: EPS -0.47 2022-06-30: EPS -0.20 2022-09-30: EPS -0.12 2022-12-31: EPS 0.12 2023-03-31: EPS -0.23 2023-06-30: EPS -0.13 2023-09-30: EPS -0.08 2023-12-31: EPS 0.04 2024-03-31: EPS -0.18 2024-06-30: EPS -0.10 2024-09-30: EPS -0.08 2024-12-31: EPS 0.05 2025-03-31: EPS -0.15 2025-06-30: EPS -0.06 2025-09-30: EPS -0.07 2025-12-31: EPS 0.50 2026-03-31: EPS -0.20 2026-06-30: EPS -0.15 0M 126M 251M $M -0.72 -0.08 0.55 2016201720182019202020212022202320242025202606/26 Revenue EPS

Quarterly figures, revenue up to 10 years back; EPS split-adjusted, early quarters hidden when not calibrable

P/E (TTM) over time
9 18 28 20252026

P/E = close around day 47 after quarter-end ÷ TTM EPS then; this is a consistent valuation date, not the company’s actual filing date; loss quarters hidden

Quarterly free cash flow
-42M6M54M 2017201820192020202120222023202420252026
Latest quarter $-25M (2026-03-31)

FCF = operating cash flow − capex, computed from SEC XBRL; banks/insurers have no standard cash-flow structure and are hidden

As of 2026-06-30 · SEC filings (XBRL)

Email me the next update

2026 Q3 holdings are due 2026-11-16. We will email you when the refreshed lists are live.