The public view is the crawlable proof. The same sourced dataset is available through REST and MCP for agents, research scripts, and back-office tools.
This stock page is the Follow view. The Build view lets your agent query TZOO owners, fund changes, insider filings, and source links through REST or MCP.
curl -H "Authorization: Bearer YOUR_API_KEY" \ "https://arkolith.com/api/v1/stocks/TZOO"
Use Arkolith to show who owns TZOO, which funds added or reduced it, and which SEC filings prove each claim.
| # | Fund | Position value | Shares | Last move | As of | History |
|---|---|---|---|---|---|---|
| 1 | VANGUARD GROUP INC | $2.9M | 406K | ▲+0.3% Added · +1K sh | Q4 2025 | |
| 2 | BlackRock, Inc. | $2.4M | 404K | ▼−2.1% Reduced · −9K sh | Q1 2026 | |
| 3 | GEODE CAPITAL MANAGEMENT, LLC | $943K | 159K | ▲+4.5% Added · +7K sh | Q1 2026 | |
| 4 | Hennion & Walsh Asset Management, Inc. | $887K | 150K | ▼−33% Reduced · −75K sh | Q1 2026 | |
| 5 | Man Group plc | $534K | 90K | ▲+193% Added · +59K sh | Q1 2026 | |
| 6 | STATE STREET CORP | $505K | 85K | ▼−1.2% Reduced · −1K sh | Q1 2026 | |
| 7 | JACOBS LEVY EQUITY MANAGEMENT, INC | $307K | 52K | ▼−51% Reduced · −54K sh | Q1 2026 | |
| 8 | VANGUARD FIDUCIARY TRUST CO | $264K | 45K | ▲New +45K sh | Q1 2026 | |
| 9 | BRIDGEWAY CAPITAL MANAGEMENT, LLC | $249K | 42K | —Held | Q1 2026 | |
| 10 | VANGUARD PORTFOLIO MANAGEMENT LLC | $219K | 37K | ▲New +37K sh | Q1 2026 | |
| 11 | EVERGREEN CAPITAL MANAGEMENT LLC | $178K | 30K | —Held | Q1 2026 | |
| 12 | Trexquant Investment LP | $97K | 16K | ▼−16% Reduced · −3K sh | Q1 2026 | |
| 13 | FMR LLC | $80K | 14K | ▲+20% Added · +2K sh | Q1 2026 | |
| 14 | Engineers Gate Manager LP | $65K | 11K | ▼−32% Reduced · −5K sh | Q1 2026 | |
| 15 | PANAGORA ASSET MANAGEMENT INC | $61K | 10K | ▼−53% Reduced · −12K sh | Q1 2026 | |
| 16 | CWM, LLC | $36K | 6K | ▲+500% Added · +5K sh | Q1 2026 | |
| 17 | Police & Firemen's Retirement System of New Jersey | $15K | 2K | —Held | Q1 2026 | |
| 18 | GAMMA Investing LLC | $6K | 1K | ▲New +1K sh | Q1 2026 | |
| 19 | Ameritas Investment Partners, Inc. | $4K | 649 | —Held | Q1 2026 | |
| 20 | ROTHSCHILD INVESTMENT LLC | $918 | 155 | ▲26× Added · +149 sh | Q1 2026 | |
| 21 | NISA INVESTMENT ADVISORS, LLC | $379 | 64 | ▲New +64 sh | Q1 2026 | |
| 22 | Sterling Capital Management LLC | $243 | 41 | —Held | Q1 2026 | |
| 23 | LOS ANGELES CAPITAL MANAGEMENT LLC | $213 | 36 | ▼−99% Reduced · −6K sh | Q1 2026 | |
| 24 | MAI Capital Management | $137 | 23 | ▲+475% Added · +19 sh | Q1 2026 | |
| 25 | SBI Securities Co., Ltd. | $12 | 2 | —Held | 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 |
|---|---|---|---|---|---|
| Feb 24, 2026 | BARTEL HOLGER | Global Chief Executive Officer, Director | Buy (P) | 40K | $217K |
| Feb 23, 2026 | BARTEL HOLGER | Global Chief Executive Officer, Director | Buy (P) | 100K | $549K |
| Feb 20, 2026 | BARTEL HOLGER | Global Chief Executive Officer, Director | Buy (P) | 60K | $311K |
| Dec 26, 2025 | Ralph Bartel 2005 Trust | 10% Owner | Sell (S) | 40K | $279K |
| Dec 23, 2025 | Ralph Bartel 2005 Trust | 10% Owner | Sell (S) | 20K | $140K |
| Dec 22, 2025 | Ralph Bartel 2005 Trust | 10% Owner | Sell (S) | 23K | $159K |
| Dec 15, 2025 | AZZURRO CAPITAL INC | 10% Owner | Sell (S) | 15K | $113K |
| Dec 11, 2025 | AZZURRO CAPITAL INC | 10% Owner | Sell (S) | 5K | $35K |
| Dec 1, 2025 | AZZURRO CAPITAL INC | 10% Owner | Sell (S) | 8K | $53K |
| Nov 26, 2025 | Ralph Bartel 2005 Trust | 10% Owner | Sell (S) | 5K | $35K |
| Nov 12, 2025 | BARTEL RALPH | 10% Owner | Sell (S) | 5K | $38K |
| Nov 4, 2025 | AZZURRO CAPITAL INC | 10% Owner | Sell (S) | 10K | $78K |
| Company | Co-held by | Combined value |
|---|---|---|
| NVIDIA CORPNVDA | 22 funds | $12.0B |
| APPLE INCAAPL | 22 funds | $10.5B |
| MICROSOFT CORPMSFT | 22 funds | $7.5B |
| AMAZON.COM INCAMZN | 22 funds | $4.5B |
| META PLATFORMS INC-CLASS AMETA | 22 funds | $3.1B |
| ELI LILLY & COLLY | 22 funds | $2.0B |
| TESLA INCTSLA | 22 funds | $1.9B |
| JPMORGAN CHASE & COJPM | 22 funds | $1.8B |
| EXXON MOBIL CORPXOM | 22 funds | $1.4B |
| COSTCO WHOLESALE CORPCOST | 22 funds | $1.4B |
| BERKSHIRE HATHAWAY INC-CL BBRK/B | 22 funds | $1.2B |
| PALANTIR TECHNOLOGIES INC-APLTR | 22 funds | $934.8M |
Ranked by how many of TZOO'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 TZOO. 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.