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/ATKR/capital-change-brief"
Use Arkolith's capital_change_brief for ATKR. Tell me what changed, whether insider activity corroborates it, and cite the SEC evidence.
| # | Fund | Position value | Shares | Last move | As of | History |
|---|---|---|---|---|---|---|
| 1 | Gates Capital Management, Inc. | $158.2M | 2.7M | ▼−1.7% Reduced · −47K sh | Q1 2026 | |
| 2 | BlackRock, Inc. | $154.7M | 2.6M | ▲+2.8% Added · +71K sh | Q1 2026 | |
| 3 | VANGUARD PORTFOLIO MANAGEMENT LLC | $123.1M | 2.1M | ▲New +2.1M sh | Q1 2026 | |
| 4 | VANGUARD CAPITAL MANAGEMENT LLC | $89.3M | 1.5M | ▲New +1.5M sh | Q1 2026 | |
| 5 | AMERICAN CENTURY COMPANIES INC | $84.8M | 1.4M | ▲+15% Added · +186K sh | Q1 2026 | |
| 6 | DIMENSIONAL FUND ADVISORS LP | $72.3M | 1.2M | ▲+8.6% Added · +98K sh | Q1 2026 | |
| 7 | FIRST TRUST ADVISORS LP | $72.3M | 1.2M | ▼−11% Reduced · −159K sh | Q1 2026 | |
| 8 | Coliseum Capital Management, LLC | $55.8M | 947K | ▲+17% Added · +138K sh | Q1 2026 | |
| 9 | GEODE CAPITAL MANAGEMENT, LLC | $50.4M | 855K | ▲+6.5% Added · +53K sh | Q1 2026 | |
| 10 | STATE STREET CORP | $49.2M | 835K | ▲+0.9% Added · +8K sh | Q1 2026 | |
| 11 | EARNEST PARTNERS LLC | $45.8M | 778K | ▼−0.7% Reduced · −6K sh | Q1 2026 | |
| 12 | Hill City Capital, LP | $42.9M | 728K | —Held | Q1 2026 | |
| 13 | HARDING LOEVNER LP | $41.5M | 705K | ▼−3.8% Reduced · −28K sh | Q1 2026 | |
| 14 | ARROWSTREET CAPITAL, LIMITED PARTNERSHIP | $41.1M | 698K | ▼−0.9% Reduced · −7K sh | Q1 2026 | |
| 15 | MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. | $31.4M | 533K | ▲+52% Added · +182K sh | Q1 2026 | |
| 16 | BANK OF AMERICA CORP /DE/ | $27.2M | 462K | ▲+10% Added · +43K sh | Q1 2026 | |
| 17 | CHARLES SCHWAB INVESTMENT MANAGEMENT INC | $24.6M | 418K | ▲+1.6% Added · +7K sh | Q1 2026 | |
| 18 | GENDELL JEFFREY L | $23.6M | 400K | ▲+3.4% Added · +13K sh | Q1 2026 | |
| 19 | VICTORY CAPITAL MANAGEMENT INC | $22.3M | 379K | ▼−23% Reduced · −113K sh | Q1 2026 | |
| 20 | LONDON CO OF VIRGINIA | $22.2M | 378K | ▼−8.3% Reduced · −34K sh | Q1 2026 | |
| 21 | TWO SIGMA INVESTMENTS, LP | $20.8M | 353K | ▲+61% Added · +134K sh | Q1 2026 | |
| 22 | NEW YORK STATE COMMON RETIREMENT FUND | $20.2M | 344K | ▼−0.7% Reduced · −2K sh | Q1 2026 | |
| 23 | JACOBS LEVY EQUITY MANAGEMENT, INC | $20.2M | 343K | ▲+6.0% Added · +20K sh | Q1 2026 | |
| 24 | MORGAN STANLEY | $19.9M | 338K | ▼−15% Reduced · −58K sh | Q1 2026 | |
| 25 | NORTHERN TRUST CORP | $18.9M | 321K | ▼−12% Reduced · −42K 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 |
|---|---|---|---|---|---|
| May 29, 2026 | Deitzer John Michael | VP, CFO | Grant (A) | 53 | $0 |
| May 29, 2026 | Edmonds Franklin S. Jr. | Director | Grant (A) | 11 | $0 |
| May 29, 2026 | Pregenzer John W | COO & President, Electrical | Grant (A) | 92 | $0 |
| May 29, 2026 | Lowe LeAngela W. | VP, Chief HR Officer | Grant (A) | 41 | $0 |
| May 29, 2026 | Lamps Mark F. | Pres. Safety & Infrastructure | Grant (A) | 53 | $0 |
| May 29, 2026 | Edwards Barbara Joanne | Director | Grant (A) | 20 | $0 |
| May 29, 2026 | Kershaw Justin A | Director | Grant (A) | 74 | $0 |
| May 29, 2026 | James Wilbert W Jr | Director | Grant (A) | 68 | $0 |
| May 29, 2026 | Waltz William E Jr. | President and CEO, Director | Grant (A) | 272 | $0 |
| May 29, 2026 | Kelly Daniel S | VP, General Counsel and Sec. | Grant (A) | 41 | $0 |
| May 29, 2026 | Zeffiro A Mark | Director | Grant (A) | 54 | $0 |
| May 29, 2026 | WYNN BETTY R. | Director | Grant (A) | 31 | $0 |
| Company | Co-held by | Combined value |
|---|---|---|
| MICROSOFT CORPMSFT | 93 funds | $41.5B |
| CUMMINS INCCMI | 92 funds | $2.4B |
| BROADCOM INCAVGO | 91 funds | $21.3B |
| AMAZON.COM INCAMZN | 90 funds | $33.1B |
| NVIDIA CORPNVDA | 89 funds | $58.5B |
| APPLE INCAAPL | 89 funds | $51.3B |
| ALPHABET INC-CL AGOOGL | 89 funds | $27.9B |
| META PLATFORMS INC-CLASS AMETA | 89 funds | $19.9B |
| ELI LILLY & COLLY | 89 funds | $11.3B |
| MICRON TECHNOLOGY INCMU | 89 funds | $7.2B |
| BANK OF AMERICA CORPBAC | 89 funds | $4.4B |
| TESLA INCTSLA | 88 funds | $13.2B |
Ranked by how many of ATKR's institutional holders also hold each name, a cross-fund conviction signal. Via the MCP server (ticker.co_held).
No filings captured for this ticker in the live stream yet.
13F holdings + Form 4 insider transactions + end-of-day price history + the live filing stream, joined for ATKR. 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.