Among active 13F managers last quarter, 3 opened and 18 added, while 10 reduced; the largest holder to move was Beck Mack & Oliver LLC (−33%). Over the last 180 days, 1 insider bought and none sold, a net +$214K in open-market trades.
Funds lean in and no leg opposes.
73 tracked 13F filers disclose a position in DIBS as of the latest SEC 13F filings, a combined $61.9M 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 | BlackRock, Inc. | 1.4M | $6.9M | ▲+387% Added · +1.1M sh | Q2 2026 | |
| 2 | Beck Mack & Oliver LLC | 1.3M | $7.1M | ▼−33% Reduced · −652K sh | Q1 2026 | |
| 3 | Vanguard Capital Management LLC | 1.1M | $5.5M | ▼−8.2% Reduced · −100K sh | Q2 2026 | |
| 4 | Joel Isaacson & Co., LLC | 1.0M | $5.1M | ▲+3.8% Added · +38K sh | Q2 2026 | |
| 5 | FIL Ltd | 1.0M | $5.5M | ▲+18% Added · +150K sh | Q1 2026 | |
| 6 | Geode Capital Management, LLC | 616K | $3.0M | ▲+95% Added · +300K sh | Q2 2026 | |
| 7 | Arrowstreet Capital, Limited Partnership | 523K | $2.9M | ▲+3.8% Added · +19K sh | Q1 2026 | |
| 8 | Two Sigma Investments, LP | 457K | $2.5M | ▲+29% Added · +104K sh | Q1 2026 | |
| 9 | Susquehanna International Group, LLP | 417K | $2.3M | ▲+9.2% Added · +35K sh | Q1 2026 | |
| 10 | Millennium Management LLC | 417K | $2.3M | ▲+34% Added · +105K sh | Q1 2026 | |
| 11 | Dimensional Fund Advisors LP | 336K | $1.8M | ▲+30% Added · +77K sh | Q1 2026 | |
| 12 | Jacobs Levy Equity Management, Inc | 284K | $1.4M | ▲+57% Added · +103K sh | Q2 2026 | |
| 13 | State Street Corp | 282K | $1.4M | ▲+100% Added · +141K sh | Q2 2026 | |
| 14 | Renaissance Technologies LLC | 259K | $1.4M | ▼−24% Reduced · −82K sh | Q1 2026 | |
| 15 | Citadel Advisors LLC | 221K | $1.1M | ▲+240% Added · +156K sh | Q2 2026 | |
| 16 | Bridgeway Capital Management, LLC | 217K | $1.1M | —Held | Q2 2026 | |
| 17 | Allen Operations LLC | 177K | $866K | —Held | Q2 2026 | |
| 18 | Vanguard Fiduciary Trust Co | 166K | $814K | ▲+7.0% Added · +11K sh | Q2 2026 | |
| 19 | Vanguard Portfolio Management LLC | 162K | $795K | ▲New +162K sh | Q2 2026 | |
| 20 | Goldman Sachs Group Inc | 138K | $761K | ▼−45% Reduced · −111K sh | Q1 2026 | |
| 21 | Trexquant Investment LP | 130K | $635K | ▲+395% Added · +103K sh | Q2 2026 | |
| 22 | Qube Research & Technologies Ltd | 123K | $674K | ▲+65% Added · +48K sh | Q1 2026 | |
| 23 | Morgan Stanley | 102K | $561K | ▲+28% Added · +22K sh | Q1 2026 | |
| 24 | G2 Investment Partners Management LLC | 96K | $473K | ▼−79% Reduced · −354K sh | Q2 2026 | |
| 25 | Jane Street Group, LLC | 89K | $489K | ▼−68% Reduced · −193K 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, 3 funds opened a new position in DIBS and 18 added to an existing one, while 10 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 |
|---|---|---|
| Microsoft CorpMSFT | 34 funds | $64.4B |
| Alphabet Inc-CL AGOOGL | 34 funds | $59.4B |
| Alphabet Inc-CL CGOOG | 34 funds | $36.4B |
| Tesla IncTSLA | 34 funds | $18.5B |
| Berkshire Hathaway Inc-CL BBRK/B | 34 funds | $8.9B |
| Costco Wholesale CorpCOST | 34 funds | $7.9B |
| Nvidia CorpNVDA | 33 funds | $114.6B |
| Apple IncAAPL | 33 funds | $80.0B |
| Amazon.com IncAMZN | 33 funds | $53.1B |
| Meta Platforms Inc-Class AMETA | 33 funds | $28.4B |
| Eli Lilly & CoLLY | 33 funds | $23.5B |
| JPMorgan Chase & CoJPM | 33 funds | $16.2B |
Ranked by how many of DIBS's tracked holders also hold each name. The last column is those co-holders' combined reported position in that name, not in DIBS.
| Date | Insider | Role | Action | Shares | Value |
|---|---|---|---|---|---|
| May 12, 2026 | Rosenblatt David S | Chief Executive Officer, Director | Buy (P) 3 lots, same day | 48K | $214K |
| Mar 17, 2026 | Goins Melanie F | General Counsel and CPO | Sell (S) | 24 | $132 |
| Mar 16, 2026 | Goins Melanie F | General Counsel and CPO | Sell (S) | 69 | $380 |
| Mar 13, 2026 | Goins Melanie F | General Counsel and CPO | Sell (S) | 7 | $39 |
| Mar 11, 2026 | Goins Melanie F | General Counsel and CPO | Sell (S) | 36 | $198 |
| Mar 10, 2026 | Goins Melanie F | General Counsel and CPO | Sell (S) | 3K | $14K |
| Mar 9, 2026 | Goins Melanie F | General Counsel and CPO | Sell (S) | 12K | $67K |
| Dec 8, 2025 | Rosenblatt David S | Chief Executive Officer, Director | Sell (S) | 73K | $436K |
| Dec 8, 2025 | Etergino Thomas J | Chief Financial Officer | Sell (S) | 27K | $161K |
| Dec 8, 2025 | Goins Melanie F | General Counsel and CPO | Sell (S) | 11K | $67K |
| Nov 24, 2025 | Rosenblatt David S | Chief Executive Officer, Director | Sell (S) | 595K | $3.0M |
| Sep 8, 2025 | Rosenblatt David S | Chief Executive Officer, Director | Sell (S) | 73K | $205K |
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 | 33 | 20 | – |
Insiders Form 4 open-market | 1 | 0 | +$214K |
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 DIBS
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/DIBS/capital-change-brief"
Use Arkolith's capital_change_brief for DIBS. 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 DIBS. Filings are public domain, sourced to SEC EDGAR; price series derived from end-of-day closes.