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/ACU/capital-change-brief"
Use Arkolith's capital_change_brief for ACU. Tell me what changed, whether insider activity corroborates it, and cite the SEC evidence.
| # | Fund | Position value | Shares | Last move | As of | History |
|---|---|---|---|---|---|---|
| 1 | DIMENSIONAL FUND ADVISORS LP | $7.7M | 172K | ▼−0.1% Reduced · −148 sh | Q1 2026 | |
| 2 | BlackRock, Inc. | $7.4M | 166K | ▼−1.1% Reduced · −2K sh | Q1 2026 | |
| 3 | VANGUARD CAPITAL MANAGEMENT LLC | $6.3M | 141K | ▲New +141K sh | Q1 2026 | |
| 4 | RENAISSANCE TECHNOLOGIES LLC | $5.2M | 117K | ▲+0.4% Added · +451 sh | Q1 2026 | |
| 5 | GEODE CAPITAL MANAGEMENT, LLC | $3.5M | 77K | ▲+1.0% Added · +799 sh | Q1 2026 | |
| 6 | Mork Capital Management, LLC | $3.1M | 70K | ▲+17% Added · +10K sh | Q1 2026 | |
| 7 | AMERICAN CENTURY COMPANIES INC | $2.1M | 46K | —Held | Q1 2026 | |
| 8 | STATE STREET CORP | $1.9M | 42K | ▲+4.7% Added · +2K sh | Q1 2026 | |
| 9 | BROWN BROTHERS HARRIMAN & CO | $1.5M | 33K | —Held | Q1 2026 | |
| 10 | ENVESTNET ASSET MANAGEMENT INC | $1.4M | 31K | ▼−12% Reduced · −4K sh | Q1 2026 | |
| 11 | Bank of New York Mellon Corp | $1.4M | 30K | ▼−3.1% Reduced · −972 sh | Q1 2026 | |
| 12 | AE Wealth Management LLC | $1.4M | 30K | ▼−12% Reduced · −4K sh | Q1 2026 | |
| 13 | FIRST MANHATTAN CO. LLC. | $1.2M | 28K | ▼−5.8% Reduced · −2K sh | Q1 2026 | |
| 14 | NORTHERN TRUST CORP | $1.1M | 24K | ▲+3.1% Added · +732 sh | Q1 2026 | |
| 15 | VANGUARD FIDUCIARY TRUST CO | $945K | 21K | ▲New +21K sh | Q1 2026 | |
| 16 | Nantahala Capital Management, LLC | $917K | 20K | —Held | Q1 2026 | |
| 17 | GOLDMAN SACHS GROUP INC | $909K | 20K | ▲+281% Added · +15K sh | Q1 2026 | |
| 18 | VANGUARD PORTFOLIO MANAGEMENT LLC | $870K | 19K | ▲New +19K sh | Q1 2026 | |
| 19 | ROYAL BANK OF CANADA | $865K | 19K | ▲+0.3% Added · +66 sh | Q1 2026 | |
| 20 | DIAMOND HILL CAPITAL MANAGEMENT INC | $849K | 19K | ▼−13% Reduced · −3K sh | Q1 2026 | |
| 21 | O'SHAUGHNESSY ASSET MANAGEMENT, LLC | $816K | 18K | ▲+1.0% Added · +180 sh | Q1 2026 | |
| 22 | Curated Wealth Partners LLC | $489K | 18K | ▲New +18K sh | Q2 2026 | |
| 23 | BRIDGEWAY CAPITAL MANAGEMENT, LLC | $783K | 17K | ▼−22% Reduced · −5K sh | Q1 2026 | |
| 24 | UBS Group AG | $656K | 15K | ▲+13% Added · +2K sh | Q1 2026 | |
| 25 | RITHOLTZ WEALTH MANAGEMENT | $479K | 11K | ▼−0.4% Reduced · −40 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 28, 2026 | OLSCHAN BRIAN S | President and COO, Director | Sell (S) | 5K | $203K |
| May 27, 2026 | JOHNSEN WALTER C | Chairman and CEO, Director, 10% Owner | Gift (G) | 6K | $246K |
| May 21, 2026 | OLSCHAN BRIAN S | President and COO, Director | Option exercise (M) | 20K | $498K |
| May 21, 2026 | OLSCHAN BRIAN S | President and COO, Director | Tax withholding (F) | 15K | $657K |
| May 21, 2026 | OLSCHAN BRIAN S | President and COO, Director | Option exercise (M) | 20K | $498K |
| May 13, 2026 | JOHNSEN WALTER C | Chairman and CEO, Director, 10% Owner | Option exercise (M) | 30K | $720K |
| May 13, 2026 | JOHNSEN WALTER C | Chairman and CEO, Director, 10% Owner | Tax withholding (F) | 24K | $979K |
| May 13, 2026 | JOHNSEN WALTER C | Chairman and CEO, Director, 10% Owner | Option exercise (M) | 30K | $720K |
| Mar 3, 2026 | MURPHY SUSAN H | Director | Gift (G) | 1K | $53K |
| Mar 2, 2026 | JOHNSEN WALTER C | Chairman and CEO, Director, 10% Owner | Grant (A) | 25K | $1.1M |
| Mar 2, 2026 | OLSCHAN BRIAN S | President and COO, Director | Grant (A) | 20K | $895K |
| Mar 2, 2026 | DRISCOLL PAUL G | Chief Financial Officer | Grant (A) | 15K | $672K |
| Company | Co-held by | Combined value |
|---|---|---|
| MICROSOFT CORPMSFT | 17 funds | $7.0B |
| AMAZON.COM INCAMZN | 17 funds | $5.4B |
| BERKSHIRE HATHAWAY INC-CL BBRK/B | 17 funds | $3.8B |
| ALPHABET INC-CL AGOOGL | 17 funds | $3.6B |
| META PLATFORMS INC-CLASS AMETA | 17 funds | $2.4B |
| VISA INC-CLASS A SHARESV | 17 funds | $1.7B |
| SALESFORCE INCCRM | 17 funds | $1.4B |
| CHEVRON CORPCVX | 17 funds | $1.1B |
| BANK OF AMERICA CORPBAC | 17 funds | $728.4M |
| WALT DISNEY CO/THEDIS | 17 funds | $571.9M |
| TJX COMPANIES INCTJX | 17 funds | $569.2M |
| ADOBE INCADBE | 17 funds | $461.8M |
Ranked by how many of ACU'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 ACU. 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.