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/ZD/capital-change-brief"
Use Arkolith's capital_change_brief for ZD. Tell me what changed, whether insider activity corroborates it, and cite the SEC evidence.
| # | Fund | Position value | Shares | Last move | As of | History |
|---|---|---|---|---|---|---|
| 1 | BlackRock, Inc. | $257.5M | 6.1M | ▼−0.9% Reduced · −54K sh | Q1 2026 | |
| 2 | JANUS HENDERSON GROUP PLC | $148.0M | 3.5M | ▲+2.7% Added · +92K sh | Q1 2026 | |
| 3 | VANGUARD PORTFOLIO MANAGEMENT LLC | $95.0M | 2.3M | ▲New +2.3M sh | Q1 2026 | |
| 4 | DIMENSIONAL FUND ADVISORS LP | $86.9M | 2.1M | ▼−1.2% Reduced · −26K sh | Q1 2026 | |
| 5 | Legal & General Group Plc | $82.9M | 2.0M | ▼−11% Reduced · −237K sh | Q1 2026 | |
| 6 | VANGUARD CAPITAL MANAGEMENT LLC | $71.2M | 1.7M | ▲New +1.7M sh | Q1 2026 | |
| 7 | STATE STREET CORP | $70.5M | 1.7M | ▼−2.8% Reduced · −48K sh | Q1 2026 | |
| 8 | GEODE CAPITAL MANAGEMENT, LLC | $42.2M | 1.0M | ▼−5.1% Reduced · −54K sh | Q1 2026 | |
| 9 | FIRST TRUST ADVISORS LP | $40.9M | 975K | ▲+690% Added · +851K sh | Q1 2026 | |
| 10 | CHARLES SCHWAB INVESTMENT MANAGEMENT INC | $35.3M | 841K | ▲+0.7% Added · +6K sh | Q1 2026 | |
| 11 | RICE HALL JAMES & ASSOCIATES, LLC | $33.6M | 800K | ▲+7.5% Added · +56K sh | Q1 2026 | |
| 12 | Nuveen, LLC | $32.4M | 772K | ▼−4.5% Reduced · −37K sh | Q1 2026 | |
| 13 | D. E. Shaw & Co., Inc. | $28.4M | 676K | ▲+4.3% Added · +28K sh | Q1 2026 | |
| 14 | MORGAN STANLEY | $25.7M | 612K | ▼−6.7% Reduced · −44K sh | Q1 2026 | |
| 15 | NORDEA INVESTMENT MANAGEMENT AB | $24.7M | 595K | ▼−22% Reduced · −171K sh | Q1 2026 | |
| 16 | GOLDMAN SACHS GROUP INC | $22.2M | 529K | ▼−11% Reduced · −68K sh | Q1 2026 | |
| 17 | NORTHERN TRUST CORP | $20.3M | 485K | ▲+2.7% Added · +13K sh | Q1 2026 | |
| 18 | BRAVE ASSET MANAGEMENT INC | $24.6M | 470K | —Held | Q2 2026 | |
| 19 | CastleKnight Management LP | $17.7M | 422K | ▲+33% Added · +104K sh | Q1 2026 | |
| 20 | Allianz Asset Management GmbH | $17.0M | 406K | ▲+54% Added · +142K sh | Q1 2026 | |
| 21 | Bank of New York Mellon Corp | $13.4M | 320K | ▼−5.7% Reduced · −19K sh | Q1 2026 | |
| 22 | AQR CAPITAL MANAGEMENT LLC | $13.2M | 314K | ▼−21% Reduced · −86K sh | Q1 2026 | |
| 23 | FORT WASHINGTON INVESTMENT ADVISORS INC /OH/ | $13.1M | 313K | ▼−41% Reduced · −220K sh | Q1 2026 | |
| 24 | PRINCIPAL FINANCIAL GROUP INC | $12.7M | 302K | ▲+29% Added · +68K sh | Q1 2026 | |
| 25 | GLENMEDE TRUST CO NA | $12.3M | 293K | ▼−8.1% Reduced · −26K 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.
| Date | Insider | Role | Action | Shares | Value |
|---|---|---|---|---|---|
| Jun 10, 2026 | RICHTER BRET | Chief Financial Officer | Sell (S) | 18K | $844K |
| Jun 8, 2026 | McDonald Kirk P | Director | Sell (S) | 975 | $45K |
| Jun 8, 2026 | McDonald Kirk P | Director | Sell (S) | 100 | $5K |
| Jun 5, 2026 | ROSSEN JEREMY | EVP/General Counsel | Sell (S) | 8K | $376K |
| Jun 3, 2026 | Barsten Jana | Director | Sell (S) | 3K | $151K |
| Jun 2, 2026 | KRETZMER W BRIAN | Director | Sell (S) | 2K | $88K |
| May 28, 2026 | ROSSEN JEREMY | EVP/General Counsel | Sell (S) | 4K | $199K |
| May 7, 2026 | TAYLOR SCOTT C | Director | Option exercise (M) | 8K | $342K |
| May 7, 2026 | McDonald Kirk P | Director | Option exercise (M) | 8K | $342K |
| May 7, 2026 | Harris Teresa A | Director | Option exercise (M) | 8K | $342K |
| May 7, 2026 | KRETZMER W BRIAN | Director | Option exercise (M) | 8K | $342K |
| May 7, 2026 | FAY SARAH ANN | Director | Option exercise (M) | 8K | $342K |
| Company | Co-held by | Combined value |
|---|---|---|
| MICROSOFT CORPMSFT | 84 funds | $34.8B |
| AMAZON.COM INCAMZN | 82 funds | $25.0B |
| NVIDIA CORPNVDA | 80 funds | $48.9B |
| BROADCOM INCAVGO | 80 funds | $18.9B |
| JPMORGAN CHASE & COJPM | 80 funds | $11.4B |
| ELI LILLY & COLLY | 80 funds | $9.1B |
| BERKSHIRE HATHAWAY INC-CL BBRK/B | 80 funds | $7.9B |
| CHEVRON CORPCVX | 80 funds | $5.4B |
| ADVANCED MICRO DEVICESAMD | 80 funds | $3.8B |
| UNITEDHEALTH GROUP INCUNH | 80 funds | $3.6B |
| APPLE INCAAPL | 79 funds | $40.5B |
| ALPHABET INC-CL AGOOGL | 79 funds | $24.3B |
Ranked by how many of ZD's institutional holders also hold each name, a cross-fund conviction signal. Via the MCP server (ticker.co_held).
13F holdings + Form 4 insider transactions + end-of-day price history + the live filing stream, joined for ZD. Filings are public domain, sourced to SEC EDGAR; price series derived from end-of-day closes. Every panel above is one call to the Arkolith API & MCP server.