Public ownership evidence

Arch Capital Group Ltd (ACGL) Ownership Disclosures

Read ACGL insider transactions, institutional 13F filings and Congressional disclosures with report dates, public availability and original receipts.

As of 2026-10-10T12:08:28.848Z

Recent Form 4 activity

2026-08-212026-08-18Morin FrancoisS11,010Not reported

90-day public availability window, up to 50 records.

Recent institutional filing receipts

These are raw ticker-matched positions in recent 13F receipts, including amendments. They are not deduplicated current ownership totals. Open the manager profile to inspect its effective filing book.

Cornerstone Financial Management LLC2026-06-302026-08-2991$8,832None
Cornerstone Financial Management LLC2026-03-312026-08-2962$5,951None
Cornerstone Financial Management LLC2025-12-312026-08-2987$8,345None
B. Riley Wealth Advisors, Inc.2025-03-312026-08-292,751$264,637None
Advisors Asset Management, Inc.2021-12-312026-08-2825,307$1,124,896None
Advisors Asset Management, Inc.2022-12-312026-08-2835,068$2,201,569None
Advisors Asset Management, Inc.2020-06-302026-08-288,376$239,972None
Advisors Asset Management, Inc.2022-06-302026-08-2830,810$1,402,000None
Advisors Asset Management, Inc.2021-09-302026-08-2813,681$522,000None
Corient Private Wealth LP2026-06-302026-08-285,281$512,574None
Corient Private Wealth LP2026-06-302026-08-2834,347$3,333,713None
VELA Investment Management, LLC2026-06-302026-08-2862,029$6,020,535None
VELA Investment Management, LLC2026-03-312026-08-283,000$287,970Put
VELA Investment Management, LLC2026-03-312026-08-2862,618$6,010,702None
VELA Investment Management, LLC2025-12-312026-08-285,000$479,600Put
VELA Investment Management, LLC2025-12-312026-08-2860,457$5,799,035None
Wellington Grp LLC2026-06-302026-08-2711,829$1,148,123None
Principia Wealth Advisory, LLC2026-06-302026-08-2719$1,844None
Principia Wealth Advisory, LLC2026-03-312026-08-2730$2,880None
Advisors Asset Management, Inc.2024-03-312026-08-2716,826$1,555,395None
Advisors Asset Management, Inc.2025-03-312026-08-2714,916$1,434,621None
Advisors Asset Management, Inc.2022-09-302026-08-2732,854$1,496,000None
Advisors Asset Management, Inc.2020-12-312026-08-279,361$338,000None
Advisors Asset Management, Inc.2022-03-312026-08-2725,847$1,251,512None
Advisors Asset Management, Inc.2023-06-302026-08-2716,807$1,258,004None
Advisors Asset Management, Inc.2023-09-302026-08-2716,183$1,289,947None
Advisors Asset Management, Inc.2023-03-312026-08-2732,556$2,209,576None
Advisors Asset Management, Inc.2021-03-312026-08-278,784$337,042None
Advisors Asset Management, Inc.2021-06-302026-08-2710,913$425,000None
Advisors Asset Management, Inc.2020-09-302026-08-279,091$265,912None
Advisors Asset Management, Inc.2025-09-302026-08-2720,938$1,899,705None
Advisors Asset Management, Inc.2023-12-312026-08-2716,595$1,232,511None
Dakota Wealth Management2025-12-312026-08-279,111$873,928None
Dakota Wealth Management2026-03-312026-08-2711,999$1,151,785None
Advisors Asset Management, Inc.2019-12-312026-08-26343$14,711None
VIRGINIA RETIREMENT SYSTEMS ET Al2026-03-312026-08-26209,000$20,061,910None
VIRGINIA RETIREMENT SYSTEMS ET Al2026-06-302026-08-26209,000$20,285,540None
Advisors Asset Management, Inc.2025-06-302026-08-2519,815$1,804,156None
CYBER HORNET ETFs LLC2026-06-302026-08-25947$91,916None
CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM2026-06-302026-08-25491,428$47,698,002None
CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM2026-06-302026-08-2547,698,002$491,428,000None
Advisors Asset Management, Inc.2024-09-302026-08-229,980$1,116,562None
Advisors Asset Management, Inc.2024-06-302026-08-229,090$917,090None
Advisors Asset Management, Inc.2024-12-312026-08-2213,655$1,261,039None
Advisors Asset Management, Inc.2025-12-312026-08-2219,981$1,916,578None
Advisors Asset Management, Inc.2020-03-312026-08-226,973$198,452None
Assenagon Asset Management S.A.2026-06-302026-08-2250,073$4,860,085None
Bullock Wealth Management Group2026-06-302026-08-20396$39,026None
Financial Avengers, Inc.2026-06-302026-08-201,640$159,178None
MERCER GLOBAL ADVISORS INC /ADV2026-06-302026-08-2064,371$6,247,841None

90-day public filing window, up to 50 source positions.

Cornerstone Financial Management LLC ↗Cornerstone Financial Management LLC ↗Cornerstone Financial Management LLC ↗B. Riley Wealth Advisors, Inc. ↗Advisors Asset Management, Inc. ↗Advisors Asset Management, Inc. ↗Advisors Asset Management, Inc. ↗Advisors Asset Management, Inc. ↗Advisors Asset Management, Inc. ↗Corient Private Wealth LP ↗

Recent Congressional disclosures

Ro Khanna2026-10-082026-09-04sale$1,001 - $15,000

Bounded public source preview, up to 25 disclosed events.

How to read the disclosure dates

The tables report different things: insider transactions, institutional positions and Congressional transaction ranges. Read each table with its source dates and units. They cannot be added into a combined ownership percentage.

  1. Company insiders

    SEC Form 4 purchases, sales and awards report transactions and their public filing availability.

  2. Institutional managers

    13F reports disclose delayed quarter-end positions. They are not a record of trades between quarters.

  3. Congressional filers

    Periodic transaction reports disclose transaction dates and amount brackets. Public filing dates determine what researchers could know.

Institutional source directory ↗Congressional source directory ↗

Read the transaction codes

Awards use transaction code A, purchases P and sales S. An acquisition from an award is not the same as an open-market purchase. Joint filers may share a transaction. Use original receipts and availability dates to interpret the events.