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/ACGL/capital-change-brief"
Use Arkolith's capital_change_brief for ACGL. 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. | $3.0B | 31.4M | ▼−1.2% Reduced · −381K sh | Q1 2026 | |
| 2 | Artisan Partners Limited Partnership | $2.2B | 22.7M | ▼−2.5% Reduced · −582K sh | Q1 2026 | |
| 3 | VANGUARD CAPITAL MANAGEMENT LLC | $2.2B | 22.6M | ▲New +22.6M sh | Q1 2026 | |
| 4 | STATE STREET CORP | $1.6B | 16.3M | ▼−1.2% Reduced · −200K sh | Q1 2026 | |
| 5 | VANGUARD PORTFOLIO MANAGEMENT LLC | $1.4B | 14.7M | ▲New +14.7M sh | Q1 2026 | |
| 6 | GEODE CAPITAL MANAGEMENT, LLC | $1.0B | 10.6M | ▲+1.1% Added · +120K sh | Q1 2026 | |
| 7 | JPMORGAN CHASE & CO | $648.5M | 6.8M | ▲+0.6% Added · +40K sh | Q1 2026 | |
| 8 | NORGES BANK | $463.2M | 4.8M | ▼−0.4% Reduced · −20K sh | Q4 2025 | |
| 9 | NORTHERN TRUST CORP | $429.3M | 4.5M | ▼−3.5% Reduced · −162K sh | Q1 2026 | |
| 10 | MORGAN STANLEY | $409.0M | 4.3M | ▼−0.7% Reduced · −29K sh | Q1 2026 | |
| 11 | DIMENSIONAL FUND ADVISORS LP | $400.6M | 4.2M | ▲+2.9% Added · +118K sh | Q1 2026 | |
| 12 | Madison Asset Management, LLC | $391.3M | 4.1M | ▼−5.9% Reduced · −256K sh | Q1 2026 | |
| 13 | Allspring Global Investments Holdings, LLC | $346.8M | 3.6M | ▼−0.9% Reduced · −34K sh | Q1 2026 | |
| 14 | ROYAL BANK OF CANADA | $339.0M | 3.5M | ▲+4.7% Added · +158K sh | Q1 2026 | |
| 15 | Polar Capital Holdings Plc | $316.8M | 3.3M | ▼−0.9% Reduced · −30K sh | Q1 2026 | |
| 16 | Legal & General Group Plc | $315.6M | 3.3M | ▲+12% Added · +344K sh | Q1 2026 | |
| 17 | PRINCIPAL FINANCIAL GROUP INC | $314.3M | 3.3M | ▼−28% Reduced · −1.3M sh | Q1 2026 | |
| 18 | UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AME | $305.2M | 3.2M | ▲+1.2% Added · +39K sh | Q1 2026 | |
| 19 | MARSHFIELD ASSOCIATES | $292.9M | 3.1M | ▲+5.7% Added · +164K sh | Q1 2026 | |
| 20 | GOLDMAN SACHS GROUP INC | $274.5M | 2.9M | ▼−3.1% Reduced · −90K sh | Q1 2026 | |
| 21 | AQR CAPITAL MANAGEMENT LLC | $260.7M | 2.7M | ▲+2.3% Added · +61K sh | Q1 2026 | |
| 22 | FIRST TRUST ADVISORS LP | $252.1M | 2.6M | ▲+320% Added · +2.0M sh | Q1 2026 | |
| 23 | COOKE & BIELER LP | $214.8M | 2.2M | ▼−15% Reduced · −397K sh | Q1 2026 | |
| 24 | ENVESTNET ASSET MANAGEMENT INC | $213.3M | 2.2M | ▲+6.2% Added · +130K sh | Q1 2026 | |
| 25 | CHARLES SCHWAB INVESTMENT MANAGEMENT INC | $206.4M | 2.1M | ▲+5.0% Added · +103K 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 11, 2026 | PASQUESI JOHN M | Director | Gift (G) | 1.0M | $0 |
| Jun 11, 2026 | PASQUESI JOHN M | Director | Gift (G) | 1.0M | $0 |
| Jun 3, 2026 | Posner Brian S | Director | Sell (S) | 3K | $59K |
| May 11, 2026 | Posner Brian S | Director | Sell (S) | 2K | $34K |
| May 5, 2026 | MOCZARSKI ALEXANDER S | Director | Grant (A) | 2K | — |
| May 5, 2026 | Goodman Laurie | Director | Grant (A) | 2K | — |
| May 5, 2026 | Houston Daniel Joseph | Director | Grant (A) | 2K | — |
| May 5, 2026 | Houston Daniel Joseph | Director | Grant (A) | 1K | — |
| May 5, 2026 | KILCOYNE MOIRA A. | Director | Grant (A) | 2K | — |
| May 5, 2026 | KILCOYNE MOIRA A. | Director | Grant (A) | 1K | — |
| May 5, 2026 | Ebong Francis | Director | Grant (A) | 2K | — |
| May 5, 2026 | Triplett Neal F | Director | Grant (A) | 2K | — |
| Company | Co-held by | Combined value |
|---|---|---|
| VISA INC-CLASS A SHARESV | 290 funds | $58.6B |
| MICROSOFT CORPMSFT | 289 funds | $261.0B |
| AMAZON.COM INCAMZN | 288 funds | $194.8B |
| JPMORGAN CHASE & COJPM | 288 funds | $66.4B |
| ALPHABET INC-CL AGOOGL | 287 funds | $166.5B |
| NVIDIA CORPNVDA | 286 funds | $364.6B |
| APPLE INCAAPL | 286 funds | $280.1B |
| MASTERCARD INC - AMA | 286 funds | $52.4B |
| ALPHABET INC-CL CGOOG | 284 funds | $120.2B |
| META PLATFORMS INC-CLASS AMETA | 282 funds | $109.4B |
| APPLIED MATERIALS INCAMAT | 280 funds | $31.2B |
| COSTCO WHOLESALE CORPCOST | 279 funds | $39.5B |
Ranked by how many of ACGL'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 ACGL. 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.