CHARLES SCHWAB INVESTMENT MANAGEMENT INC
Position in RBBN — Ribbon Communications Inc.
CIK 884546
SAN FRANCISCO, CA
Position in RBBN
as of Mar 31, 2026
· filed May 15, 2026
Position Value
$1,501,305
-$713,628 QoQ
Shares Held
708,163
-7.9% QoQ
Ownership
0.402%
of shares outstanding
% of Portfolio
0.00%
of 13F equity value
Holder Rank
—
not a current holder
Holding Since
Mar 2020
25 quarters on record
Voting authority
Sole 100.ToString("F0")%
Shared 0.ToString("F0")%
None 0.ToString("F0")%
Common Shares in RBBN Over Time
Shares Held
Position Value (USD)
Position in Software - Application
Technology · as of Mar 31, 2026CHARLES SCHWAB INVESTMENT MANAGEMENT INC holds $13,352,634,052 across 137 Software - Application names. RBBN ranks #108 (0.0% of the industry book) .
| # | Ticker | Company | Shares | Value (USD) | Open |
|---|---|---|---|---|---|
| 1 | ADP |
Automatic Data Processing Inc
|
11,561,745 | $2,349,115,349 | |
| 2 | CRM |
Salesforce, Inc.
|
7,001,546 | $1,306,978,591 | |
| 3 | UBER |
Uber Technologies, Inc
|
14,905,928 | $1,072,183,401 | |
| 4 | INTU |
Intuit Inc.
|
2,067,005 | $893,731,621 | |
| 5 | PAYX |
Paychex Inc
|
9,375,253 | $863,648,306 | |
| 6 | NOW |
ServiceNow, Inc.
|
7,607,165 | $795,329,100 | |
| 7 | ADBE |
Adobe Inc.
|
3,185,754 | $774,393,082 | |
| 8 | CDNS |
Cadence Design Systems Inc
|
2,013,314 | $559,439,561 |
All Filings in RBBN
Export CSV
25 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-03-31 | $1,501,305 | 708,163 | Shares | Sole | 2026-05-15 | |
| 2025-12-31 | $2,214,933 | 769,074 | Shares | Sole | 2026-02-13 | |
| 2025-09-30 | $2,924,050 | 769,487 | Shares | Sole | 2025-11-10 | |
| 2025-06-30 | $3,072,453 | 766,198 | Shares | Sole | 2025-08-12 | |
| 2025-03-31 | $2,931,301 | 747,781 | Shares | Sole | 2025-09-15 | |
| 2024-12-31 | $3,164,790 | 760,767 | Shares | Sole | 2025-02-06 | |
| 2024-09-30 | $2,479,399 | 762,892 | Shares | Sole | 2024-11-12 | |
| 2024-06-30 | $2,463,907 | 748,908 | Shares | Sole | 2024-08-12 | |
| 2024-03-31 | $2,221,804 | 694,314 | Shares | Sole | 2024-05-09 | |
| 2023-12-31 | $2,001,762 | 690,263 | Shares | Sole | 2024-02-06 | |
| 2023-09-30 | $1,826,414 | 681,498 | Shares | Sole | 2023-11-08 | |
| 2023-06-30 | $1,840,071 | 659,524 | Shares | Sole | 2023-08-10 | |
| 2023-03-31 | $2,125,177 | 621,397 | Shares | Sole | 2023-05-12 | |
| 2022-12-31 | $1,795,130 | 643,416 | Shares | Sole | 2023-02-13 | |
| 2022-09-30 | $1,168,008 | 526,130 | Shares | Sole | 2022-11-14 | |
| 2022-06-30 | $2,277,321 | 749,119 | Shares | Sole | 2022-08-15 | |
| 2022-03-31 | $2,373,564 | 768,144 | Shares | Sole | 2022-05-13 | |
| 2021-12-31 | $4,435,678 | 733,170 | Shares | Sole | 2022-02-11 | |
| 2021-09-30 | $4,283,444 | 716,295 | Shares | Sole | 2021-11-16 | |
| 2021-06-30 | $5,423,920 | 712,736 | Shares | Sole | 2021-08-16 | |
| 2021-03-31 | $5,695,432 | 693,719 | Shares | Sole | 2021-05-17 | |
| 2020-12-31 | $4,356,692 | 664,130 | Shares | Sole | 2021-02-16 | |
| 2020-09-30 | $2,613,798 | 675,400 | Shares | Sole | 2020-11-13 | |
| 2020-06-30 | $2,202,670 | 560,476 | Shares | Sole | 2020-08-20 | |
| 2020-03-31 | $1,533,343 | 506,054 | Shares | Sole | 2020-05-15 | |
| No filing history on record for this holder in this stock. | ||||||