RUM Group Inc. (Nasdaq: RUM), an SEC filer in Services-Computer Programming, Data Processing, Etc., closed at $8.98, -4.8%, on 2026-08-28, with a market cap of $2.4B as of 2026-08-27, a net margin of -81.3% and 3-year sales growth of 36.7%. Institutional ownership, earnings history and filed financials are on the tabs below.
| # | Holder | Shares | Value | % of shares out | Δ QoQ |
|---|---|---|---|---|---|
| 1 | CANTOR FITZGERALD, L. P. | 9,326,2059.3M | $48M | 3.66% | — |
| 2 | BlackRock, Inc. | 7,888,1377.9M | $40M | 3.10% | — |
| 3 | COOPER CREEK PARTNERS MANAGEMENT LLC | 5,242,4975.2M | $27M | 2.06% | ADD 54% |
| 4 | VANGUARD PORTFOLIO MANAGEMENT LLC | 4,020,8264.0M | $21M | 1.58% | NEW |
| 5 | VANGUARD CAPITAL MANAGEMENT LLC | 4,017,8144.0M | $20M | 1.58% | NEW |
| 6 | STATE STREET CORP | 3,335,7563.3M | $17M | 1.31% | ADD 8% |
| 7 | GEODE CAPITAL MANAGEMENT, LLC | 2,803,9562.8M | $14M | 1.10% | — |
| 8 | GOLDMAN SACHS GROUP INC | 2,072,6852.1M | $11M | 0.81% | ADD 154% |
| 9 | UBS Group AG | 1,601,9461.6M | $8M | 0.63% | ADD 92% |
| 10 | MORGAN STANLEY | 1,013,5691.0M | $5M | 0.40% | TRIM -59% |
Ranked by each filer’s own reported value, not shares.
2 holders — The filer reported no value for this line, so it carries no dollar figure and is left out of the percentage and value columns.
| Biggest buyers | Δ shares | Δ value | |
|---|---|---|---|
| VANGUARD PORTFOLIO MANAGEMENT LLC | +4,020,826 | $21M | OPEN |
| VANGUARD CAPITAL MANAGEMENT LLC | +4,017,814 | $20M | OPEN |
| COOPER CREEK PARTNERS MANAGEMENT LLC | +1,840,893 | $9M | ADD |
| GOLDMAN SACHS GROUP INC | +1,256,547 | $6M | ADD |
| UBS Group AG | +768,761 | $4M | ADD |
| Biggest sellers | Δ shares | Δ value | |
|---|---|---|---|
| VANGUARD GROUP INC | −8,786,584 | $45M | CLOSE |
| MORGAN STANLEY | −1,450,056 | $7M | TRIM |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | −290,511 | $1M | TRIM |
| BARCLAYS PLC | −248,102 | $1M | TRIM |
| BANK OF AMERICA CORP /DE/ | −153,113 | $780,876 | TRIM |
Prior quarter split-rebased · 13Fs are long, US-listed only.
| Holder | 2024-Q4 | 2025-Q1 | 2025-Q2 | 2025-Q3 | 2025-Q4 | 2026-Q1 | Latest value |
|---|---|---|---|---|---|---|---|
| CANTOR FITZGERALD, L. P. | 9.3M | 9.3M | 9.3M | 9.4M | 9.3M | 9.3M | $48M |
| BlackRock, Inc. | 1.8M | 2.3M | 6.4M | 7.7M | 8.0M | 7.9M | $40M |
| COOPER CREEK PARTNERS MANAGEMENT LLC | — | — | — | — | 3.4M | 5.2M | $27M |
| VANGUARD PORTFOLIO MANAGEMENT LLC | — | — | — | — | — | 4.0M | $21M |
| VANGUARD CAPITAL MANAGEMENT LLC | — | — | — | — | — | 4.0M | $20M |
| STATE STREET CORP | 1.0M | 1.2M | 2.3M | 3.2M | 3.1M | 3.3M | $17M |
| GEODE CAPITAL MANAGEMENT, LLC | 1.0M | 1.5M | 2.4M | 2.7M | 2.8M | 2.8M | $14M |
| GOLDMAN SACHS GROUP INC | 508K | 322K | 651K | 844K | 816K | 2.1M | $11M |
| UBS Group AG | 1.4M | 1.2M | 1.0M | 1.1M | 833K | 1.6M | $8M |
| MORGAN STANLEY | 411K | 234K | 359K | 802K | 2.5M | 1.0M | $5M |
Green = added, red = trimmed, grey = held; a dash is a quarter with no 13F on file — a gap, not an exit.
Breaks = no 13F that quarter.
Short interest has its own tab now — open SI →
SEC Form 13F · ~10,250 filers, 10y · long-only, US-listed, filed ≤45d after quarter-end.
“See the Schedule 13D, as amended, for historical information. Item 4 is amended and supplemented as follows: The Support Closing occurred on June 17, 2026. Pursuant to the terms of the Support Agreement, TINV sold, and the Issuer purchased, all of the ND Shares owned by TINV at the Support Closing (43,512,526 ND Shares) in exchange for an aggregate of 36,703,354 new shares of Class A Common Stock and Pre-Funded Warrants exercisable for an aggregate of 51,544,399 shares of Class A Common Stock. O”
“Item 4 of the Original Schedule 13D is hereby amended and supplemented to include the following: The Reporting Person (a) exchanged (on a 1-for-1 basis) 9,636,434 ExchangeCo Shares for shares of Class A Common Stock and (b) immediately sold (i) such shares of Class A Common Stock and (ii) an additional 354,849 shares of Class A Common Stock, in each case, at a price of $7.50 per share to the Issuer in the Issuer' s self-tender offer that closed on February 7, 2025. In connection with the exchang”
“Item 4 of the Original 13D is hereby amended and supplemented to include the following: On March 4, 2025, the Reporting Person terminated the 10b5-1 trading plan entered into on November 19, 2024, as described in Amendment No. 1 to the Schedule 13D filed on November 22, 2024, intended to satisfy the affirmative defense of Rule 10b5-1(c) under the Securities Exchange Act of 1934, as amended.”
“Item 4 of the Original Schedule 13D is hereby amended and supplemented to include the following: The Reporting Person (a) exercised options for 5,012,242 shares of Class A Common Stock and (b) immediately sold (i) such shares of Class A Common Stock and (ii) an additional 7,337,783 shares of Class A Common Stock, in each case, at a price of $7.50 per share to the Issuer in the Issuer' s self-tender offer that closed on February 11, 2025.”
“Item 4 of the Original Schedule 13D is hereby amended and supplemented to include the following: The Reporting Person (a) (i) exchanged (on a 1-for-1 basis) 2,043,839 ExchangeCo Shares for shares of Class A Common Stock and (ii) exercised options for 6,828,420 shares of Class A Common Stock and (b) immediately sold such shares of Class A Common Stock at a price of $7.50 per share to the Issuer in the Issuer' s self-tender offer that closed on February 7, 2025. In connection with the exchange of ”
“Item 4 of the Original Schedule 13D is hereby amended and supplemented to include the following: The Reporting Person (a) (i) exchanged (on a 1-for-1 basis) 3,096,802 ExchangeCo Shares for shares of Class A Common Stock and (ii) exercised options for 3,817,165 shares of Class A Common Stock and (b) immediately sold such shares of Class A Common Stock at a price of $7.50 per share to the Issuer in the Issuer' s self-tender offer that closed on February 7, 2025. In connection with the exchange of ”
| Holder | % of class | Type | As of | |
|---|---|---|---|---|
| VANGUARD GROUP INC | 4.46% | QII | 2025-03-31 | SEC → |
SEC Schedule 13D/G XML · group aggregate.
