Latest Period
Q1 2026
Security Snapshot
Ribbon Communications Inc. - Common Stock (RBBN) Institutional Ownership
CUSIP: 762544104
13F Institutional Holders and Ownership History from Q4 2017 to Q1 2026
Institutions Reporting
149
Shares (Excl. Options)
129,256,500
Price
$2.12
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- Security type / class
- Equity / Common Stock
- Symbol
- RBBN on Nasdaq
- All holders as of 31 Mar 2026
- Q1 2026
- Total 13F shares
- 129,256,500
- Total 13F value
- $268,160,669
- Portfolio coverage rank
- 0%
- Share change
- -775,200
- Value change
- -$3,982,239
- Number of holders
- 149
- Shares outstanding
- 174,964,000
- SEC-reported price per share
- $2.78
- Insider filing price
- $2.78
Latest holder snapshot
5 signals
Issuer context
Names, identifiers, and filing context for this profile.
3 identity fields
13F Shares, Excluding Options vs Price
13F Value, Excluding Options
Total Investors
Key facts
- RBBN - Ribbon Communications Inc. - Common Stock is tracked under CUSIP 762544104.
- 149 institutions reported positions in Q1 2026.
- 1 significant owner is listed from Schedule 13D/13G reporting.
Change
- Holder count moved from 153 to 149 between Q4 2025 and Q1 2026.
- SEC-reported value moved from $369,243,520 to $268,160,669.
Research use
- You can quickly see who holds this security, then open quarter and manager detail pages for full evidence.
- 13F and Schedule 13D/13G sections are kept together so you can cross-check institutional and beneficial ownership context.
Evidence
Source: SEC Form 13F
Open SEC evidence
Latest holder context comes from 149 institutions filings for Q1 2026.
Security key
762544104
Latest holder period
Q1 2026
13F holders
149
13D/G owners
1
CIK / CUSIP context first
Open Q1 2026 holders
RBBN full holder history
Ribbon Communications Inc. SEC filings
Ribbon Communications Inc. company facts
Ribbon Communications Inc. insider transactions
Broader feeds
Recent Quarterly Holder Reports
Open recent reporting periods for CUSIP 762544104:
13D/G owners
Significant owners
Large-stake holder rows connected to Schedule 13D/G evidence.
Rows
1
Security
RBBN
| Filer | Ownership | Change % | Holdings Value | Net Change | Nb Shares | Change % | Reporting Name | Report Period |
|---|---|---|---|---|---|---|---|---|
| PARADIGM CAPITAL MANAGEMENT INC/NY | 5% | $36,567,476 | 8,748,200 | PARADIGM CAPITAL MANAGEMENT INC/NY | 30 Jun 2025 |
As of 31 Mar 2026, 149 institutional investors reported holding 129,256,500 shares of Ribbon Communications Inc. - Common Stock (RBBN). This represents 74% of the company’s total 174,964,000 outstanding shares.
13F concentration
Top 25 institutional shareholders
Largest 13F positions for this security by reported shares and value.
Top holder share
70%
| Institution | Ownership % | Shares Held | Share Change % | Portfolio % | Holdings Value |
|---|---|---|---|---|---|
| JPMORGAN CHASE & CO | 30% | 52,043,036 | +0.01% | 0.01% | $107,989,300 |
| NEUBERGER BERMAN GROUP LLC | 9.9% | 17,361,988 | -0.4% | 0.03% | $33,200,090 |
| PARADIGM CAPITAL MANAGEMENT INC/NY | 4.6% | 8,036,335 | -3.4% | 0.65% | $17,037,030 |
| BlackRock, Inc. | 3.8% | 6,724,007 | -12% | 0% | $14,254,896 |
| DIMENSIONAL FUND ADVISORS LP | 3.6% | 6,351,110 | -1.9% | 0% | $13,463,964 |
| ROYCE & ASSOCIATES LP | 2.8% | 4,879,741 | +5.7% | 0.1% | $10,345,051 |
| VANGUARD CAPITAL MANAGEMENT LLC | 2.4% | 4,216,459 | 0% | 0% | $8,938,893 |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 1.9% | 3,335,665 | 0% | 0% | $7,071,610 |
| GEODE CAPITAL MANAGEMENT, LLC | 1.4% | 2,414,560 | +4.9% | 0% | $5,119,979 |
| Connor, Clark & Lunn Investment Management Ltd. | 1.2% | 2,089,722 | +4.7% | 0.01% | $4,430,211 |
| STATE STREET CORP | 1.1% | 1,910,027 | -9% | 0% | $4,049,257 |
| D. E. Shaw & Co., Inc. | 0.88% | 1,538,472 | +57% | 0% | $3,261,561 |
| ACADIAN ASSET MANAGEMENT LLC | 0.82% | 1,438,490 | +89% | 0% | $3,043,000 |
| FIRST WILSHIRE SECURITIES MANAGEMENT INC | 0.8% | 1,407,178 | +11% | 0.67% | $2,983,217 |
| AQR CAPITAL MANAGEMENT LLC | 0.72% | 1,257,347 | +156% | 0% | $2,665,576 |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP | 0.7% | 1,216,876 | +18% | 0% | $2,579,777 |
| MARSHALL WACE, LLP | 0.44% | 769,787 | +343% | 0% | $1,631,949 |
| GOLDMAN SACHS GROUP INC | 0.43% | 744,745 | -5.4% | 0% | $1,578,860 |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 0.4% | 708,163 | -7.9% | 0% | $1,501,306 |
| NORTHERN TRUST CORP | 0.4% | 705,858 | -23% | 0% | $1,496,419 |
| JACOBS LEVY EQUITY MANAGEMENT, INC | 0.39% | 685,310 | -23% | 0.01% | $1,452,857 |
| VANGUARD FIDUCIARY TRUST CO | 0.34% | 587,429 | 0% | 0% | $1,245,349 |
| CITADEL ADVISORS LLC | 0.33% | 574,989 | +967% | 0% | $1,218,977 |
| MILLENNIUM MANAGEMENT LLC | 0.28% | 491,320 | +805% | 0% | $1,041,598 |
| Silverberg Bernstein Capital Management LLC | 0.25% | 438,123 | +0.48% | 0.51% | $928,821 |
Quarter history
Institutional holders across reporting periods
Holder count, reported shares/value, and median price by quarter.
Periods
34
Latest
Q1 2026
Rows shown
1-25 of 34
| Period | 13F Shares, Excl. Options | Value, Excl. Options | Value Change | Price (Median) | Investors |
|---|---|---|---|---|---|
| 2026 Q1 | 129,256,500 | $268,160,669 | -$3,982,239 | $2.12 | 149 |
| 2025 Q4 | 129,650,493 | $369,243,520 | -$1,377,853 | $2.88 | 153 |
| 2025 Q3 | 129,867,806 | $488,625,931 | +$5,422,869 | $3.80 | 151 |
| 2025 Q2 | 128,120,242 | $508,960,472 | +$3,024,776 | $4.01 | 143 |
| 2025 Q1 | 127,416,325 | $495,234,342 | +$5,145,829 | $3.92 | 143 |
| 2024 Q4 | 126,033,231 | $519,827,051 | +$5,503,928 | $4.16 | 131 |
| 2024 Q3 | 124,931,161 | $402,328,649 | +$55,662,098 | $3.25 | 126 |
| 2024 Q2 | 106,348,811 | $349,760,231 | -$58,641,045 | $3.29 | 128 |
| 2024 Q1 | 124,279,238 | $397,693,359 | +$69,195,005 | $3.20 | 131 |
| 2023 Q4 | 104,742,901 | $303,752,097 | +$3,494,147 | $2.90 | 125 |
| 2023 Q3 | 103,163,647 | $276,463,535 | -$1,679,277 | $2.68 | 121 |
| 2023 Q2 | 104,142,185 | $290,540,575 | -$39,834,149 | $2.79 | 125 |
| 2023 Q1 | 117,379,899 | $401,425,056 | +$3,703,828 | $3.42 | 142 |
| 2022 Q4 | 118,148,543 | $329,593,645 | +$734,645 | $2.79 | 124 |
| 2022 Q3 | 118,472,379 | $263,053,703 | +$38,836,428 | $2.22 | 118 |
| 2022 Q2 | 100,809,923 | $306,439,957 | +$3,772,283 | $3.04 | 120 |
| 2022 Q1 | 99,890,118 | $308,842,380 | -$17,676,884 | $3.09 | 124 |
| 2021 Q4 | 99,198,401 | $599,989,032 | +$11,330,479 | $6.05 | 122 |
| 2021 Q3 | 97,071,581 | $580,330,841 | -$7,772,374 | $5.98 | 117 |
| 2021 Q2 | 98,367,370 | $748,413,815 | +$402,949 | $7.61 | 120 |
| 2021 Q1 | 98,033,091 | $804,682,950 | -$5,449,138 | $8.21 | 137 |
| 2020 Q4 | 98,922,454 | $648,838,141 | +$26,001,368 | $6.56 | 121 |
| 2020 Q3 | 94,930,653 | $363,544,758 | -$2,451,038 | $3.87 | 106 |
| 2020 Q2 | 95,545,142 | $375,154,809 | +$13,011,856 | $3.93 | 106 |
| 2020 Q1 | 92,187,027 | $279,312,593 | +$5,561,696 | $3.03 | 109 |