Among active 13F managers last quarter, 6 opened and 22 added, while 12 reduced; the largest holder to move was Elgethun Capital Management (+0.3%). Over the last 180 days, 2 insiders bought and none sold, a net +$1.2M in open-market trades.
Funds lean in and no leg opposes.
125 tracked 13F filers disclose a position in BOC as of the latest SEC 13F filings, a combined $271.5M 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 | Magnolia Group, LLC | 5.6M | $76.2M | —Held | Q2 2026 | |
| 2 | Massachusetts Institute Of Technology | 2.4M | $33.3M | —Held | Q2 2026 | |
| 3 | BlackRock, Inc. | 1.8M | $24.4M | ▲+15% Added · +238K sh | Q2 2026 | |
| 4 | Dimensional Fund Advisors LP | 1.6M | $18.3M | ▼−0.1% Reduced · −2K sh | Q1 2026 | |
| 5 | Elgethun Capital Management | 1.5M | $19.9M | ▲+0.3% Added · +4K sh | Q2 2026 | |
| 6 | Vanguard Capital Management LLC | 968K | $13.2M | ▼−8.3% Reduced · −88K sh | Q2 2026 | |
| 7 | Private Management Group Inc | 935K | $12.8M | ▲+1.9% Added · +17K sh | Q2 2026 | |
| 8 | Fenimore Asset Management Inc | 930K | $10.9M | ▲+0.4% Added · +4K sh | Q1 2026 | |
| 9 | Geode Capital Management, LLC | 563K | $7.7M | ▲+3.6% Added · +19K sh | Q2 2026 | |
| 10 | State Street Corp | 535K | $7.3M | ▲+4.9% Added · +25K sh | Q2 2026 | |
| 11 | Nitor Capital Management LLC | 416K | $5.7M | ▲+14% Added · +52K sh | Q2 2026 | |
| 12 | First Manhattan Co. LLC. | 394K | $5.4M | ▼−4.4% Reduced · −18K sh | Q2 2026 | |
| 13 | Stevens Capital Partners | 364K | $5.0M | ▼−20% Reduced · −93K sh | Q2 2026 | |
| 14 | Vanguard Portfolio Management LLC | 231K | $3.2M | ▲+5.3% Added · +12K sh | Q2 2026 | |
| 15 | Northern Trust Corp | 171K | $2.0M | ▲+3.2% Added · +5K sh | Q1 2026 | |
| 16 | Vanguard Fiduciary Trust Co | 145K | $2.0M | ▲+1.2% Added · +2K sh | Q2 2026 | |
| 17 | Goldman Sachs Group Inc | 143K | $1.7M | ▲+62% Added · +55K sh | Q1 2026 | |
| 18 | Two Sigma Investments, LP | 143K | $1.7M | ▲+30% Added · +33K sh | Q1 2026 | |
| 19 | George Kaiser Family Foundation | 141K | $1.9M | —Held | Q2 2026 | |
| 20 | Citadel Advisors LLC | 131K | $1.8M | ▲+19% Added · +21K sh | Q2 2026 | |
| 21 | Meixler Investment Management, Ltd. | 96K | $1.3M | ▼−5.8% Reduced · −6K sh | Q2 2026 | |
| 22 | Ironvine Capital Partners, LLC | 90K | $1.2M | ▼−79% Reduced · −336K sh | Q2 2026 | |
| 23 | UBS Group AG | 70K | $822K | ▼−13% Reduced · −10K sh | Q1 2026 | |
| 24 | Trexquant Investment LP | 60K | $816K | ▲+3.6% Added · +2K sh | Q2 2026 | |
| 25 | American Century Companies Inc | 60K | $695K | ▼−0.9% Reduced · −520 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. 1 value row is withheld because the reported units disagree with same-security peers; share counts are unchanged.
Last quarter, 6 funds opened a new position in BOC and 22 added to an existing one, while 12 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 | 61 funds | $199.9B |
| Apple IncAAPL | 61 funds | $141.2B |
| Amazon.com IncAMZN | 61 funds | $93.4B |
| Alphabet Inc-CL AGOOGL | 61 funds | $85.0B |
| JPMorgan Chase & CoJPM | 61 funds | $28.3B |
| Berkshire Hathaway Inc-CL BBRK/B | 61 funds | $19.4B |
| Costco Wholesale CorpCOST | 61 funds | $17.7B |
| Microsoft CorpMSFT | 60 funds | $122.1B |
| Visa Inc-Class A SharesV | 60 funds | $28.9B |
| Chevron CorpCVX | 60 funds | $10.4B |
| Tesla IncTSLA | 59 funds | $34.8B |
| Meta Platforms Inc-Class AMETA | 58 funds | $51.4B |
Ranked by how many of BOC's tracked holders also hold each name. The last column is those co-holders' combined reported position in that name, not in BOC.
| Date | Insider | Role | Action | Shares | Value |
|---|---|---|---|---|---|
| Jun 1, 2026 | Kenan Frank H. II | Director | Buy (P) | 6K | $78K |
| May 29, 2026 | Kenan Frank H. II | Director | Buy (P) | 10K | $129K |
| May 28, 2026 | Kenan Frank H. II | Director | Buy (P) | 35K | $464K |
| May 27, 2026 | Royal Jeffrey C | Director | Buy (P) 2 lots, same day | 20K | $255K |
| May 26, 2026 | Royal Jeffrey C | Director | Buy (P) | 11K | $142K |
| May 22, 2026 | Royal Jeffrey C | Director | Buy (P) | 10K | $124K |
| Dec 11, 2025 | Burt Thomas | Director | Buy (P) | 15K | $201K |
| Dec 3, 2025 | Kenan Frank H. II | Director | Buy (P) 2 lots, same day | 25K | $320K |
| Dec 2, 2025 | Kenan Frank H. II | Director | Buy (P) 2 lots, same day | 11K | $139K |
| Dec 1, 2025 | Royal Jeffrey C | Director | Buy (P) | 10K | $127K |
| Dec 1, 2025 | Kenan Frank H. II | Director | Buy (P) | 44K | $560K |
| Jun 14, 2024 | Peterson Adam K | Chief Executive Officer, Director, 10% Owner | Buy (P) | 9K | $124K |
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 | 35 | 37 | – |
Insiders Form 4 open-market | 2 | 0 | +$1.2M |
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.
Connected entities for BOC
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/BOC/capital-change-brief"
Use Arkolith's capital_change_brief for BOC. 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 BOC. Filings are public domain, sourced to SEC EDGAR; price series derived from end-of-day closes.