RUM · RUM Group Inc. · Holdings
Institutional ownership from SEC Form 13F filings. Investment managers with more than $100 million in U.S. equities must disclose their positions every quarter, within 45 days of quarter-end, so the holdings shown can lag the market by up to a quarter.
Institutional Ownership Trend
Holder Concentration
Across 237 13F filersWho Holds RUM
Last 8 quarters through Sep 30, 2026 (filing window open)Each kind of 13F filer's share of the common shares 13F filers report. Holder type comes from regulatory records, never the filer's name; style, turnover and horizon are measured from each filer's own 13F book. The quarter selector does not change this card.
Jun 30, 2026, the newest closed quarter: 233 filers, like-for-like change +8.8%; actively managed books +15.6%; index-like books -0.2%.
| Holder type | Share | Filers | Change |
|---|---|---|---|
| Registered adviser | 29.1% | 126 | +8.1% |
| Exempt adviser | 2.6% | 4 | -17.4% |
| Adviser | 16.2% | 7 | +64.1% |
| Bank | 9.9% | 15 | -19.7% |
| Insurer | 0.0% | 1 | +12.6% |
| Broker-dealer | 0.2% | 3 | +24.1% |
| Benefit plan | 0.1% | 1 | +14.7% |
| Non-US | 0.4% | 5 | +21.4% |
| Holding company | 17.7% | 5 | -2.9% |
| Unknown | 23.6% | 66 | +14.3% |
| Style | Share | Filers | Change |
|---|---|---|---|
| Index-like | 39.3% | 25 | -0.2% |
| Systematic-like | 4.9% | 16 | +5.1% |
| Concentrated | 18.7% | 43 | +1.3% |
| Diversified active | 37.0% | 149 | +26.3% |
| Not measured | 0.0% | 0 | — |
| Unknown | 0.0% | 0 | — |
| Turnover | Share | Filers | Change |
|---|---|---|---|
| Low turnover | 38.9% | 140 | +3.1% |
| Medium turnover | 22.2% | 43 | -10.9% |
| High turnover | 23.7% | 33 | +62.7% |
| Unknown | 15.2% | 17 | +3.6% |
| Not measured | 0.0% | 0 | — |
| Holding horizon | Share | Filers | Change |
|---|---|---|---|
| Short horizon | 16.2% | 28 | +5.5% |
| Medium horizon | 35.2% | 43 | +4.5% |
| Long horizon | 29.8% | 146 | -0.5% |
| Unknown | 18.9% | 16 | +45.9% |
| Not measured | 0.0% | 0 | — |
| 13F book size | Share | Filers | Change |
|---|---|---|---|
| Under $1B | 2.3% | 58 | +2.7% |
| $1B to $10B | 37.8% | 72 | +22.3% |
| $10B to $100B | 3.0% | 49 | -3.3% |
| $100B or more | 56.9% | 54 | +2.2% |
| Not measured | 0.0% | 0 | — |
| Client base | Share | Filers | Change |
|---|---|---|---|
| Individuals and high net worth | 2.0% | 86 | +40.6% |
| Pooled investment vehicles | 3.4% | 15 | +5.0% |
| Registered funds and BDCs | 20.6% | 9 | +5.2% |
| Pension and profit sharing plans | 0.0% | 1 | +7.2% |
| Insurance companies | 2.2% | 4 | +8.1% |
| Charitable organizations | 0.0% | 1 | new |
| Governments and sovereign funds | 0.2% | 1 | +9.1% |
| Corporations | 0.0% | 1 | 0.0% |
| Other investment advisers | 0.0% | 1 | -35.1% |
| Diversified | 0.7% | 7 | +51.7% |
| Other | 0.0% | 0 | — |
| Unknown | 70.9% | 107 | +9.1% |
| Private funds | Share | Filers | Change |
|---|---|---|---|
| Hedge funds | 6.2% | 21 | +3.7% |
| Private equity funds | 0.4% | 8 | +52.0% |
| Venture capital funds | 0.0% | 1 | +19.5% |
| Real estate funds | 0.0% | 3 | +107.1% |
| Securitized asset funds | 0.2% | 1 | +12.1% |
| Other private funds | 0.5% | 6 | +13.2% |
| Mixed private funds | 0.2% | 1 | -0.5% |
| Private funds, type not stated | 2.5% | 3 | -2.9% |
| No private funds | 21.8% | 86 | +6.1% |
| Unknown | 68.2% | 103 | +10.5% |
| Location | Share | Filers | Change |
|---|---|---|---|
| United States | 94.6% | 204 | +13.7% |
| Outside the US | 5.4% | 29 | -37.5% |
The Sep 30, 2026 filing window is still open, so its bar carries the Jun 30, 2026 positions of filers that have not filed yet.
How the mix is measured
Shares are 13F common shares restated to today's split basis; options and principal amounts are left out. The change compares only filers with a 13F in both quarters and keeps each filer in its bucket of the later quarter on both sides; a filer that continues under a new CIK is compared through its successor. Holder type comes from each filer's current regulatory profile; client base and private funds come from the Form ADV roster current at each quarter end (rosters from December 2019, so an earlier quarter reads Unknown). Style, turnover, horizon and book size are measured from each filer's 13F book in the newest measured quarter, and Not measured means none was. Actively managed books are those measured systematic-like, concentrated or diversified active.
Excluded 2 holders with no observed 2026-03-31 13F and 4 holders with no observed 2026-06-30 13F. Compared across CIK changes: JANUS HENDERSON GROUP PLC continues as Jupiter Topco LLC; Trask Adam Roland continues as Burnham & Co LLC.
Conviction and Crowding
226 13F filers, quarter ended Jun 30, 2026Measured across every 13F filer's common-share book once the quarter's filing window closed. Crowding counts filers with high turnover or that advise private funds on Form ADV.
Managers in the top fifth by current three-year FundScore alpha were net buyers of $0 (0 buying, 0 selling).
Estimated Holder Cost Basis
Quarter ended Jun 30, 2026, on that quarter's share basisEstimated, never filed: each 13F buy is costed at its quarter's average traded price and each sale keeps the average cost, so this is what holders paid on average if they traded evenly through each quarter.
Estimated cost covers 83.2% of the 13F shares; positions already held when a filer's 13F history starts, or bought in a quarter without a trusted average price, have no estimate.
Shared Holders
Companies RUM's active holders also own, quarter ended Jun 30, 2026Shareholder Targets
13F filers that own its peers but not RUM, quarter ended Jun 30, 2026Found through its holder-overlap peers: SHW, AMD, GD, META, MU, NVDA, WMT, AMZN, MSFT, STT, GOOGL, BRK-B, JPM, TJX, TXN, TSLA, AAPL, XOM, LLY, AVGO. 7,136 filers in all.
| # | Filer | In peers | Largest peers |
|---|---|---|---|
| 1 | NORGES BANK Non-US, Index-like | $398,727,648,957 19 held | NVDA, GOOGL, AAPL |
| 2 | Capital Research Global Investors Adviser, Diversified active | $279,280,882,041 19 held | AVGO, NVDA, GOOGL |
| 3 | Capital World Investors Adviser, Diversified active | $265,120,240,384 18 held | AVGO, GOOGL, MU |
| 4 | WELLINGTON MANAGEMENT GROUP LLP Holding company, Diversified active | $160,196,501,014 20 held | NVDA, GOOGL, AVGO |
| 5 | Amundi Holding company, Index-like | $155,324,338,628 20 held | NVDA, AAPL, GOOGL |
| 6 | Capital International Investors Adviser, Diversified active | $152,394,738,919 17 held | AVGO, GOOGL, MSFT |
| 7 | DIMENSIONAL FUND ADVISORS LP Registered adviser, Diversified active | $117,039,850,416 20 held | NVDA, AAPL, MSFT |
| 8 | LILLY ENDOWMENT INC Unknown, Unknown | $108,400,867,760 1 held | LLY |
| 9 | Berkshire Hathaway Inc Insurer, Concentrated | $103,714,385,303 2 held | AAPL, GOOGL |
| 10 | Fisher Asset Management, LLC Adviser, Diversified active | $98,811,974,220 20 held | NVDA, AAPL, GOOGL |
Fund Ownership of RUM by Fund Type
Registered funds' Form N-PORT reports for the quarter ended Jun 30, 2026Index funds and index ETFs hold 3.51% of shares outstanding.
| Fund type | Of shares outstanding | Shares |
|---|---|---|
| Index funds | 0.76% | 3,779,676 |
| Index ETFs | 2.75% | 13,613,065 |
| Active ETFs | 0.00% | 4,748 |
| Active funds | 0.06% | 285,675 |
| Unclassified | 0.00% | 0 |
| All registered funds | 3.57% | 17,683,164 |
How fund types are measured
Each fund series counts once, with its latest Form N-PORT report dated inside the quarter; only long share positions count, restated to today's split basis. The fund type is the series' latest Form N-CEN answer on or before the quarter end (the index-fund box and the exchange-traded flag), never its name. Unclassified funds have no usable N-CEN; unit investment trusts are among them, so index ownership is a floor. Funds sit inside their advisers' 13F reports, so these shares overlap the 13F figures and are never added to them.
| Holder | Value (USD) | % of 13F | Shares | Type | Filed | Open |
|---|---|---|---|---|---|---|
| Mid CANTOR FITZGERALD, L. P. | $59,128,139 | 15.38% | 9,326,205 | Shares | 2026-08-19 | |
| Mid COOPER CREEK PARTNERS MANAGEMENT LLC Adviser | $57,333,089 | 14.92% | 9,043,074 | Shares | 2026-08-14 | |
| Mega BlackRock, Inc. Holding company | $55,147,349 | 14.35% | 8,698,321 | Shares | 2026-08-07 | |
| Mega VANGUARD PORTFOLIO MANAGEMENT LLC Registered adviser | $26,475,003 | 6.89% | 4,175,868 | Shares | 2026-08-13 | |
| Mega VANGUARD CAPITAL MANAGEMENT LLC Registered adviser | $26,117,763 | 6.80% | 4,119,521 | Shares | 2026-08-13 | |
| Mega GEODE CAPITAL MANAGEMENT, LLC Registered adviser | $19,508,350 | 5.08% | 3,077,027 | Shares | 2026-08-12 | |
| Mega STATE STREET CORP Bank | $18,342,437 | 4.77% | 2,893,129 | Shares | 2026-09-22 | |
| Mega GOLDMAN SACHS GROUP INC Holding company | $9,814,496 | 2.55% | 1,548,028 | Shares | 2026-08-14 | |
| Mega CHARLES SCHWAB INVESTMENT MANAGEMENT INC Registered adviser | $6,126,487 | 1.59% | 966,323 | Shares | 2026-08-14 | |
| Mega NORTHERN TRUST CORP Bank | $6,041,244 | 1.57% | 952,878 | Shares | 2026-08-13 | |
| Mega SUSQUEHANNA INTERNATIONAL GROUP, LLP | $5,884,274 | 1.53% | 928,119 | Shares | 2026-08-14 | |
| Mega SUSQUEHANNA INTERNATIONAL GROUP, LLP | $5,473,322 | 1.42% | 863,300 | Call | 2026-08-14 | |
| Mega VANGUARD FIDUCIARY TRUST CO | $5,015,751 | 1.31% | 791,128 | Shares | 2026-08-13 | |
| Mega JANE STREET GROUP, LLC | $4,913,550 | 1.28% | 775,008 | Shares | 2026-08-14 | |
| Large PEAK6 LLC Broker-dealer | $4,706,816 | 1.22% | 742,400 | Call | 2026-08-13 | |
| Mega SUSQUEHANNA INTERNATIONAL GROUP, LLP | $4,586,990 | 1.19% | 723,500 | Put | 2026-08-14 | |
| Mega UBS Group AG Bank | $4,428,717 | 1.15% | 698,536 | Shares | 2026-08-13 | |
| Mega AMERIPRISE FINANCIAL INC Adviser | $4,001,490 | 1.04% | 631,150 | Shares | 2026-08-14 | |
| Mega BANK OF AMERICA CORP /DE/ Bank | $3,519,029 | 0.92% | 555,052 | Shares | 2026-08-14 | |
| Mid BlueCrest Capital Management Ltd | $3,170,000 | 0.82% | 500,000 | Call | 2026-08-14 | |
| Large Caption Management, LLC Registered adviser | $2,631,100 | 0.68% | 415,000 | Call | 2026-08-14 | |
| Mega CITADEL ADVISORS LLC Registered adviser | $2,612,714 | 0.68% | 412,100 | Put | 2026-09-02 | |
| Mega MORGAN STANLEY Holding company | $2,569,714 | 0.67% | 405,318 | Shares | 2026-08-13 | |
| Mega Nuveen, LLC | $2,211,023 | 0.58% | 348,742 | Shares | 2026-08-11 | |
| Mega Bank of New York Mellon Corp Bank | $2,042,257 | 0.53% | 322,123 | Shares | 2026-08-06 | |
| Mega NATIONAL BANK OF CANADA /FI/ Bank | $1,687,708 | 0.44% | 266,200 | Shares | 2026-08-10 | |
| Large Cambridge Investment Research Advisors, Inc. | $1,672,365 | 0.44% | 263,780 | Shares | 2026-07-30 | |
| Large Walleye Trading LLC | $1,585,000 | 0.41% | 250,000 | Call | 2026-08-03 | |
| Mega CITADEL ADVISORS LLC Registered adviser | $1,543,156 | 0.40% | 243,400 | Call | 2026-09-02 | |
| Mega AQR CAPITAL MANAGEMENT LLC Registered adviser | $1,396,641 | 0.36% | 220,291 | Shares | 2026-08-14 | |
| Mid Sigma Planning Corp Registered adviser | $1,348,651 | 0.35% | 212,721 | Shares | 2026-08-07 | |
| Mega CITADEL ADVISORS LLC Registered adviser | $1,332,091 | 0.35% | 210,109 | Shares | 2026-09-02 | |
| Large Quantinno Capital Management LP Registered adviser | $1,054,570 | 0.27% | 166,336 | Shares | 2026-08-13 | |
| Large Walleye Trading LLC | $1,042,099 | 0.27% | 164,369 | Shares | 2026-08-03 | |
| Large ExodusPoint Capital Management, LP Registered adviser | $975,535 | 0.25% | 153,870 | Shares | 2026-08-14 | |
| Mega Swiss National Bank | $960,510 | 0.25% | 151,500 | Shares | 2026-08-11 | |
| Large Walleye Trading LLC | $900,914 | 0.23% | 142,100 | Put | 2026-08-03 | |
| Mid DARK FOREST CAPITAL MANAGEMENT LP Registered adviser | $899,557 | 0.23% | 141,886 | Shares | 2026-08-14 | |
| Mega RHUMBLINE ADVISERS Registered adviser | $892,906 | 0.23% | 140,837 | Shares | 2026-08-12 | |
| Mega JANE STREET GROUP, LLC | $878,724 | 0.23% | 138,600 | Call | 2026-08-14 | |
| Mega D. E. Shaw & Co., Inc. | $824,200 | 0.21% | 130,000 | Call | 2026-08-14 | |
| Mega PRICE T ROWE ASSOCIATES INC /MD/ Registered adviser | $799,061 | 0.21% | 126,035 | Shares | 2026-08-14 | |
| Mega WELLS FARGO & COMPANY/MN Bank | $755,675 | 0.20% | 119,192 | Shares | 2026-08-14 | |
| Mega DEUTSCHE BANK AG\ Non-US | $747,326 | 0.19% | 117,875 | Shares | 2026-08-07 | |
| Mega UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC Registered adviser | $675,817 | 0.18% | 106,596 | Shares | 2026-08-13 | |
| Mega LPL Financial LLC Broker-dealer | $671,069 | 0.17% | 105,847 | Shares | 2026-08-07 | |
| Large MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. | $609,286 | 0.16% | 96,102 | Shares | 2026-08-14 | |
| Mega ALLIANCEBERNSTEIN L.P. Registered adviser | $581,485 | 0.15% | 91,717 | Shares | 2026-08-14 | |
| Mega CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM Benefit plan | $516,881 | 0.13% | 81,527 | Shares | 2026-08-24 | |
| Large OSAIC HOLDINGS, INC. Holding company | $514,997 | 0.13% | 81,230 | Shares | 2026-08-14 | |
| Mid Entropy Technologies, LP Registered adviser | $476,869 | 0.12% | 75,216 | Shares | 2026-08-13 | |
| Mega Creative Planning Registered adviser | $475,233 | 0.12% | 74,958 | Shares | 2026-08-13 | |
| Mid Stratos Wealth Partners, LTD. Registered adviser | $471,429 | 0.12% | 74,358 | Shares | 2026-08-11 | |
| Mega CITIGROUP INC Bank | $466,154 | 0.12% | 73,526 | Shares | 2026-08-03 | |
| Mega JPMORGAN CHASE & CO Bank | $461,570 | 0.12% | 72,803 | Shares | 2026-08-12 | |
| Large FIRST MANHATTAN CO. LLC. Adviser | $442,512 | 0.12% | 69,797 | Shares | 2026-08-14 | |
| Large Zurcher Kantonalbank (Zurich Cantonalbank) Non-US | $432,717 | 0.11% | 68,252 | Shares | 2026-08-12 | |
| Large MetLife Investment Management, LLC Registered adviser | $427,214 | 0.11% | 67,384 | Shares | 2026-08-14 | |
| Mega Invesco Ltd. Adviser | $427,187 | 0.11% | 67,380 | Shares | 2026-08-14 | |
| Large IMC-Chicago, LLC | $407,148 | 0.11% | 64,219 | Shares | 2026-08-06 | |
| Mid Virtu Financial LLC | $398,500 | 0.10% | 62,855 | Shares | 2026-08-13 | |
| Large MARSHALL WACE, LLP Exempt adviser | $392,921 | 0.10% | 61,975 | Shares | 2026-08-13 | |
| Mega Russell Investments Group, Ltd. | $378,320 | 0.10% | 59,672 | Shares | 2026-08-06 | |
| Mega Legal & General Group Plc | $343,120 | 0.09% | 54,120 | Shares | 2026-08-14 | |
| Mega MANUFACTURERS LIFE INSURANCE COMPANY, THE | $343,082 | 0.09% | 54,114 | Shares | 2026-09-09 | |
| Mega VANGUARD ASSET MANAGEMENT, Ltd | $322,915 | 0.08% | 50,933 | Shares | 2026-08-13 | |
| Large MML INVESTORS SERVICES, LLC | $293,776 | 0.08% | 46,337 | Shares | 2026-08-07 | |
| Mid Snowden Capital Advisors LLC Registered adviser | $274,128 | 0.07% | 43,238 | Shares | 2026-08-13 | |
| Large SIH Partners, LLLP | $266,527 | 0.07% | 42,039 | Shares | 2026-08-14 | |
| Mega Vanguard Global Advisers, LLC Registered adviser | $259,565 | 0.07% | 40,941 | Shares | 2026-08-13 | |
| Mid SILVER OAK SECURITIES, INCORPORATED Registered adviser | $252,896 | 0.07% | 39,889 | Shares | 2026-08-07 | |
| Large Handelsbanken Fonder AB Non-US | $250,430 | 0.07% | 39,500 | Shares | 2026-07-10 | |
| Mid Engineers Gate Manager LP | $249,897 | 0.07% | 39,416 | Shares | 2026-08-14 | |
| Large Police & Firemen's Retirement System of New Jersey | $230,788 | 0.06% | 36,402 | Shares | 2026-07-23 | |
| Mid EVERGREEN CAPITAL MANAGEMENT LLC Registered adviser | $224,042 | 0.06% | 35,338 | Shares | 2026-07-23 | |
| Large Private Advisor Group, LLC Registered adviser | $222,343 | 0.06% | 35,070 | Shares | 2026-07-27 | |
| Mega Jupiter Topco LLC | $217,715 | 0.06% | 34,340 | Shares | 2026-08-14 | |
| Large Mariner, LLC Registered adviser | $204,141 | 0.05% | 32,199 | Shares | 2026-08-13 | |
| Large WEALTH ENHANCEMENT ADVISORY SERVICES, LLC | $202,093 | 0.05% | 26,732 | Shares | 2026-10-13 | |
| Large COMMONWEALTH EQUITY SERVICES, LLC Registered adviser | $183,010 | 0.05% | 28,866 | Shares | 2026-07-29 | |
| Mega RAYMOND JAMES FINANCIAL INC | $176,447 | 0.05% | 27,831 | Shares | 2026-08-14 | |
| Large INTECH INVESTMENT MANAGEMENT LLC Registered adviser | $170,336 | 0.04% | 26,867 | Shares | 2026-08-10 | |
| Mega FRANKLIN RESOURCES INC Adviser | $167,127 | 0.04% | 26,361 | Shares | 2026-08-13 | |
| Large PEAK6 LLC Broker-dealer | $166,361 | 0.04% | 26,240 | Shares | 2026-08-13 | |
| Large Corient Private Wealth LLC Registered adviser | $163,793 | 0.04% | 25,835 | Shares | 2026-08-27 | |
| Mid Sculptor Capital LP Registered adviser | $162,304 | 0.04% | 25,600 | Put | 2026-08-14 | |
| Mid Sculptor Capital LP Registered adviser | $162,304 | 0.04% | 25,600 | Shares | 2026-08-14 | |
| Mega JANE STREET GROUP, LLC | $159,134 | 0.04% | 25,100 | Put | 2026-08-14 | |
| Large Brevan Howard Capital Management LP Exempt adviser | $159,045 | 0.04% | 25,086 | Shares | 2026-08-14 | |
| Large NEW YORK STATE COMMON RETIREMENT FUND | $157,866 | 0.04% | 24,900 | Shares | 2026-07-29 | |
| Large MERCER GLOBAL ADVISORS INC /ADV Registered adviser | $157,783 | 0.04% | 24,887 | Shares | 2026-08-19 | |
| Mega BARCLAYS PLC Bank | $155,906 | 0.04% | 24,591 | Shares | 2026-08-14 | |
| Large EP Wealth Advisors, LLC Registered adviser | $150,613 | 0.04% | 23,756 | Shares | 2026-08-12 | |
| Mega ROYAL BANK OF CANADA Bank | $148,773 | 0.04% | 23,466 | Shares | 2026-08-14 | |
| Mega VOYA INVESTMENT MANAGEMENT LLC Registered adviser | $139,898 | 0.04% | 22,066 | Shares | 2026-08-12 | |
| Large IEQ CAPITAL, LLC Registered adviser | $139,816 | 0.04% | 22,053 | Shares | 2026-08-11 | |
| Large Cetera Investment Advisers Registered adviser | $138,998 | 0.04% | 21,924 | Shares | 2026-08-12 | |
| Mid Numerai GP LLC Registered adviser | $137,673 | 0.04% | 21,715 | Shares | 2026-08-14 | |
| Large ARIZONA STATE RETIREMENT SYSTEM | $132,100 | 0.03% | 20,836 | Shares | 2026-08-07 | |
| Small Second Half Financial Partners, LLC | $129,164 | 0.03% | 20,373 | Shares | 2026-07-17 |
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