238 tracked 13F filers disclose a position in ZD as of the latest SEC 13F filings, a combined $1.7B 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 | 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 Ltd. | $148.0M | 3.5M | ▲+2.7% Added · +92K sh | Q1 2026 | |
| 3 | Pale Fire Capital SE | $139.3M | 2.7M | ▼−4.4% Reduced · −123K sh | Q2 2026 | |
| 4 | VANGUARD PORTFOLIO MANAGEMENT LLC | $95.0M | 2.3M | →First observed position No prior filed position | Q1 2026 | |
| 5 | DIMENSIONAL FUND ADVISORS LP | $86.9M | 2.1M | ▼−1.2% Reduced · −26K sh | Q1 2026 | |
| 6 | Legal & General Group Plc | $82.9M | 2.0M | ▼−11% Reduced · −237K sh | Q1 2026 | |
| 7 | VANGUARD CAPITAL MANAGEMENT LLC | $71.2M | 1.7M | →First observed position No prior filed position | Q1 2026 | |
| 8 | STATE STREET CORP | $84.7M | 1.6M | ▼−3.8% Reduced · −63K sh | Q2 2026 | |
| 9 | FIRST TRUST ADVISORS LP | $40.9M | 975K | ▲+690% Added · +851K sh | Q1 2026 | |
| 10 | GEODE CAPITAL MANAGEMENT, LLC | $50.6M | 966K | ▼−4.0% Reduced · −40K sh | Q2 2026 | |
| 11 | CHARLES SCHWAB INVESTMENT MANAGEMENT INC | $35.3M | 841K | ▲+0.7% Added · +6K sh | Q1 2026 | |
| 12 | RICE HALL JAMES & ASSOCIATES, LLC | $43.0M | 821K | ▲+2.7% Added · +22K sh | Q2 2026 | |
| 13 | Nuveen, LLC | $32.4M | 772K | ▼−4.5% Reduced · −37K sh | Q1 2026 | |
| 14 | D. E. Shaw & Co., Inc. | $28.4M | 676K | ▲+4.3% Added · +28K sh | Q1 2026 | |
| 15 | MORGAN STANLEY | $25.7M | 612K | ▼−6.7% Reduced · −44K sh | Q1 2026 | |
| 16 | NORDEA INVESTMENT MANAGEMENT AB | $24.7M | 595K | ▼−22% Reduced · −171K sh | Q1 2026 | |
| 17 | GOLDMAN SACHS GROUP INC | $22.2M | 529K | ▼−11% Reduced · −68K sh | Q1 2026 | |
| 18 | NORTHERN TRUST CORP | $20.3M | 485K | ▲+2.7% Added · +13K sh | Q1 2026 | |
| 19 | BRAVE ASSET MANAGEMENT INC | $24.6M | 470K | —Held | Q2 2026 | |
| 20 | CDAM | $23.7M | 454K | ▼−20% Reduced · −110K sh | Q2 2026 | |
| 21 | CastleKnight Management LP | $17.7M | 422K | ▲+33% Added · +104K sh | Q1 2026 | |
| 22 | Allianz Asset Management GmbH | $17.0M | 406K | ▲+54% Added · +142K sh | Q1 2026 | |
| 23 | Bank of New York Mellon Corp | $13.4M | 320K | ▼−5.7% Reduced · −19K sh | Q1 2026 | |
| 24 | AQR CAPITAL MANAGEMENT LLC | $13.2M | 314K | ▼−21% Reduced · −86K sh | Q1 2026 | |
| 25 | FORT WASHINGTON INVESTMENT ADVISORS INC /OH/ | $13.1M | 313K | ▼−41% Reduced · −220K 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, 6 funds opened a new position in ZD and 21 added to an existing one, while 27 reduced and 0 exited entirely — 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 | Combined value |
|---|---|---|
| MICROSOFT CORPMSFT | 124 funds | $219.6B |
| AMAZON.COM INCAMZN | 122 funds | $157.3B |
| ALPHABET INC-CL AGOOGL | 121 funds | $129.7B |
| APPLE INCAAPL | 120 funds | $242.4B |
| ELI LILLY & COLLY | 120 funds | $65.3B |
| JPMORGAN CHASE & COJPM | 120 funds | $50.1B |
| CHEVRON CORPCVX | 119 funds | $24.3B |
| BROADCOM INCAVGO | 118 funds | $127.7B |
| META PLATFORMS INC-CLASS AMETA | 118 funds | $91.2B |
| MERCK & CO. INC.MRK | 118 funds | $23.8B |
| AMERICAN EXPRESS COAXP | 118 funds | $13.7B |
| NVIDIA CORPNVDA | 117 funds | $322.2B |
Ranked by how many of ZD's institutional holders also hold each name, a cross-fund conviction signal.
| Date | Insider | Role | Action | Shares | Value |
|---|---|---|---|---|---|
| Aug 18, 2026 | KRETZMER W BRIAN | Director | Sell (S) | 3K | $139K |
| Aug 12, 2026 | TANSLEY LORI A. | Chief Accounting Officer | Sell (S) | 1K | $77K |
| Aug 10, 2026 | ROSSEN JEREMY | EVP/General Counsel | Sell (S) | 4K | $210K |
| 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 |
| Sep 15, 2025 | FAY SARAH ANN | Director | Buy (P) | 1K | $50K |
| Mar 6, 2025 | KRETZMER W BRIAN | Director | Buy (P) | 653 | $25K |
| Class | 13F holders | Value held |
|---|---|---|
| ZDthis pagecs | 238 funds | $1.7B |
| ZD 1.75 11/01/26NOTE 1.750pcnt11/0 | 23 funds | $153.0M |
| ZD 3.625 03/01/28Sovereign/Corporate | 20 funds | $235.7M |
Same issuer, multiple share classes. The consensus leaderboards count this company once across all classes; this is the per-class detail.
Connected entities for ZD
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.
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.