Among active 13F managers last quarter, 4 opened and 14 added, while 13 reduced; the largest holder to move was Marshall Wace, LLP (+146%). No open-market insider trades in the last 180 days.
Funds lean in and no leg opposes.
207 tracked 13F filers disclose a position in RUM as of the latest SEC 13F filings, a combined $271.7M in reported value. Holders and values reflect the 13F filers Arkolith currently tracks, not the entire institutional universe. Counts and totals are a floor, not the full institutional ownership.
| # | Fund | Shares | Position value | Last move | As of | History |
|---|---|---|---|---|---|---|
| 1 | Cantor Fitzgerald, L. P. | 9.3M | $47.6M | —Held | Q1 2026 | |
| 2 | BlackRock, Inc. | 8.7M | $55.1M | ▲+10% Added · +810K sh | Q2 2026 | |
| 3 | Vanguard Portfolio Management LLC | 4.2M | $26.5M | ▲+3.9% Added · +155K sh | Q2 2026 | |
| 4 | Vanguard Capital Management LLC | 4.1M | $26.1M | ▲+2.5% Added · +102K sh | Q2 2026 | |
| 5 | Geode Capital Management, LLC | 3.1M | $19.5M | ▲+9.7% Added · +273K sh | Q2 2026 | |
| 6 | State Street Corp | 2.9M | $18.3M | ▼−13% Reduced · −443K sh | Q2 2026 | |
| 7 | Goldman Sachs Group Inc | 2.1M | $10.6M | ▲+154% Added · +1.3M sh | Q1 2026 | |
| 8 | UBS Group AG | 1.6M | $8.2M | ▲+92% Added · +769K sh | Q1 2026 | |
| 9 | Morgan Stanley | 1.0M | $5.2M | ▼−59% Reduced · −1.5M sh | Q1 2026 | |
| 10 | Charles Schwab Investment Management Inc | 908K | $4.6M | ▼−0.5% Reduced · −4K sh | Q1 2026 | |
| 11 | National Bank Of Canada | 895K | $4.6M | ▲+69% Added · +364K sh | Q1 2026 | |
| 12 | Northern Trust Corp | 847K | $4.3M | ▲+5.1% Added · +41K sh | Q1 2026 | |
| 13 | Vanguard Fiduciary Trust Co | 791K | $5.0M | ▲+9.0% Added · +65K sh | Q2 2026 | |
| 14 | Ameriprise Financial Inc | 628K | $3.2M | ▲+0.4% Added · +3K sh | Q1 2026 | |
| 15 | Jane Street Group, LLC | 432K | $2.2M | ▲+216% Added · +295K sh | Q1 2026 | |
| 16 | Marshall Wace, LLP | 417K | $2.1M | ▲+146% Added · +248K sh | Q1 2026 | |
| 17 | Bank of New York Mellon Corp | 322K | $1.6M | ▲+0.5% Added · +1K sh | Q1 2026 | |
| 18 | Nuveen, LLC | 223K | $1.1M | ▲+0.5% Added · +1K sh | Q1 2026 | |
| 19 | Sigma Planning Corp | 213K | $1.3M | ▲+31% Added · +50K sh | Q2 2026 | |
| 20 | Citadel Advisors LLC | 210K | $1.3M | ▲Added Added · +210K sh | Q2 2026 | |
| 21 | Barclays PLC | 169K | $864K | ▼−59% Reduced · −248K sh | Q1 2026 | |
| 22 | Bank Of America Corp | 163K | $833K | ▼−48% Reduced · −153K sh | Q1 2026 | |
| 23 | ExodusPoint Capital Management, LP | 154K | $976K | ▲+346% Added · +119K sh | Q2 2026 | |
| 24 | Swiss National Bank | 149K | $758K | —Held | Q1 2026 | |
| 25 | Mirae Asset Global Etfs Holdings Ltd. | 142K | $726K | ▼−8.7% Reduced · −14K sh | Q1 2026 |
Holders and values reflect the 13F filers Arkolith currently tracks, not the entire institutional universe. Counts and totals are a floor, not the full institutional ownership.
Last quarter, 4 funds opened a new position in RUM and 14 added to an existing one, while 13 reduced. Based on 13F filings from active, signal-eligible managers (passive index funds and other mechanical holders are excluded from this count).
| Company | Co-held by | Their position there |
|---|---|---|
| Nvidia CorpNVDA | 101 funds | $213.4B |
| Microsoft CorpMSFT | 101 funds | $123.8B |
| Amazon.com IncAMZN | 100 funds | $95.9B |
| Meta Platforms Inc-Class AMETA | 100 funds | $54.6B |
| Advanced Micro DevicesAMD | 100 funds | $33.2B |
| Berkshire Hathaway Inc-CL BBRK/B | 99 funds | $19.4B |
| Alphabet Inc-CL AGOOGL | 98 funds | $82.8B |
| Intel CorpINTC | 98 funds | $14.6B |
| Wells Fargo & CoWFC | 98 funds | $8.5B |
| Apple IncAAPL | 97 funds | $149.2B |
| JPMorgan Chase & CoJPM | 97 funds | $28.4B |
| Eli Lilly & CoLLY | 96 funds | $46.6B |
Ranked by how many of RUM's tracked holders also hold each name. The last column is those co-holders' combined reported position in that name, not in RUM.
| Date | Insider | Role | Action | Shares | Value |
|---|---|---|---|---|---|
| Feb 6, 2026 | Devasini Giancarlo | 10% Owner | Buy (P) | 44K | $243K |
| Feb 5, 2026 | Devasini Giancarlo | 10% Owner | Buy (P) | 539K | $2.9M |
| Feb 3, 2026 | Devasini Giancarlo | 10% Owner | Buy (P) | 194K | $1.1M |
| Nov 21, 2025 | Devasini Giancarlo | 10% Owner | Buy (P) | 270K | $1.5M |
| Nov 20, 2025 | Devasini Giancarlo | 10% Owner | Buy (P) | 440K | $2.4M |
| Nov 19, 2025 | Devasini Giancarlo | 10% Owner | Buy (P) | 353K | $1.9M |
| Feb 7, 2025 | Hlibowicki Wojciech | Chief Technology Officer | Sell (S) 2 lots, same day | 6.9M | $51.9M |
| Feb 7, 2025 | Alexandroff Brandon | Chief Financial Officer | Sell (S) 2 lots, same day | 8.9M | $66.5M |
| Feb 7, 2025 | Milnes Ryan | Director | Sell (S) | 25.0M | $187.3M |
| Feb 7, 2025 | Pavlovski Christopher | Chief Executive Officer, Director, 10% Owner | Sell (S) 2 lots, same day | 10.0M | $74.9M |
| Feb 7, 2025 | Arsov Robert | Director | Sell (S) | 12.4M | $92.6M |
| Feb 7, 2025 | Hughes Tyler | Chief Operating Officer | Sell (S) | 313K | $2.3M |
One row per insider, day and transaction code; shares and value are summed across the lots. Every lot is on the full insider page and in the filing.
Where institutional funds (13F), corporate insiders (Form 4) and US House members (STOCK Act) are buying or selling the same name in the same window. Green is buying, red is selling.
Insiders and Congress: last 180 days. Funds: latest 13F, top 100 holders incl. passive
| Source | Buying | Selling | Net |
|---|---|---|---|
13F funds Top 100 holders by value, passive included; the hero counts active managers only | 41 | 34 | – |
Insiders Form 4 open-market | 0 | 0 | $0 |
US House STOCK Act trades | 0 | 0 | $0 |
Capital Rotation reports where institutional capital disclosed rotating, as of the latest public SEC 13F filings. It is data, not investment advice, a recommendation, or a prediction. Filings lag about 45 days and cover long US equity positions only. Past disclosed flows do not indicate future prices. Do your own research; consult a licensed advisor.
| Class | 13F holders | Value held |
|---|---|---|
| RUMthis pagecs | 207 funds | $271.7M |
| RUMBW*W EXP 09/16/202 | 10 funds | $11.8M |
Same issuer, multiple share classes. The consensus leaderboards count this company once across all classes; this is the per-class detail.
Connected entities for RUM
This stock page is the public Follow view. For one current, evidence-backed answer, use capital_change_brief through REST or MCP. It compares tracked 13F changes with qualifying Form 4 activity and cites the SEC evidence.
curl -H "Authorization: Bearer YOUR_API_KEY" \ "https://arkolith.com/api/v1/stocks/RUM/capital-change-brief"
Use Arkolith's capital_change_brief for RUM. Tell me what changed, whether insider activity corroborates it, and cite the SEC evidence.
13F holdings + Form 4 insider transactions + end-of-day price history + the live filing stream, joined for RUM. Filings are public domain, sourced to SEC EDGAR; price series derived from end-of-day closes.