What does CUSIP 084423102 represent in this 13F holders report?

CUSIP 084423102 is the security identifier for WRB - BERKLEY W R CORP - Common Stock, par value $0.20 per share used to aggregate holder disclosures.

How many institutions held WRB - BERKLEY W R CORP - Common Stock, par value $0.20 per share in Q3 2026?

115 institutional investors reported WRB - BERKLEY W R CORP - Common Stock, par value $0.20 per share for Q3 2026. Use the holders table for investor-level position and value details.

BERKLEY W R CORP - Common Stock, par value $0.20 per share (WRB)

CUSIP: 084423102

Q3 2026 13F Holders as of 30 Sep 2026

Security type / class: Equity / Common Stock, par value $0.20 per share
Total 13F shares: 3,040,295
Total 13F value: $206,107,208
Share change: -328,059
SEC-reported price per share: $67.54
Number of holders: 115
Value change: -$22,285,997
Number of buys: 47
Number of sells: 52
Shares outstanding: 372,252,918

Security key

084423102

Report period

Q3 2026

Institutions

115

Top holders

WRB full security history Ownership snapshot Full 13F holder table BERKLEY W R CORP SEC filings BERKLEY W R CORP company facts BERKLEY W R CORP 13D/G history

Broader feeds

Latest 13F filings Latest 13D/G filings Investors directory

Reporting periods

Holder history for CUSIP 084423102

Recent filing periods:

Q3 2026

Ownership snapshot

Top reported holders of WRB - BERKLEY W R CORP - Common Stock, par value $0.20 per share (13F + 13D/G + 3/4/5)

Grouped by holder across the latest SEC ownership disclosures. Start with comparable ownership when available, then verify the linked 13F, 13D/G, or 3/4/5 evidence.

Comparable stake leader

William R. Berkley Jr.

Disclosed value leader

William R. Berkley

Comparable rows

15/15

Latest evidence

03 Aug 2026

13D/G 3/4/5 13F Lead comparable stake: 26% 13D/G row: William R. Berkley Jr. Showing 1-6 of 15 holder rows.

Quick read

William R. Berkley Jr. leads the comparable SEC ownership view at 26%.

15 of 15 rows have a safely comparable ownership percentage. Use this as a filing-backed starting point, then open the detailed table for source links, reporting role, position value, share count, and filing date.

Open SEC evidence Opens William R. Berkley Jr.'s linked filing trail.

Comparable ownership Top 5

William R. Berkley Jr. 26%

William R. Berkley 26%

MITSUI SUMITOMO INSURANCE CO LTD 16%

VANGUARD CAPITAL MANAGEMENT LLC 5.8%

James G. Shiel 0.27%

Ownership % is shown only when SEC disclosures are safely comparable across share classes.

Detailed SEC evidence table Showing 1-6 of 15 holder rows

Holder	Evidence	Ownership %	Position	12M Net Δ	As of
William R. Berkley Jr.	13D/G 3/4/5 W. Robert Berkley, Jr. · Chairman, President and CEO, Director, 10%+ Owner 13D/G 3/4/5	26%	$6,739,658,062 95,557,324 shares	$0	17 Jul 2026
William R. Berkley	13D/G 3/4/5 Executive Chairman, Director, 10%+ Owner 13D/G 3/4/5	26%	$6,835,728,842 95,551,144 shares	$0	04 Mar 2026
MITSUI SUMITOMO INSURANCE CO LTD	3/4/5 13D/G 13F 10%+ Owner · Company 3/4/5 13D/G 13F	16% from 13D/G	$4,262,981,599 58,780,450 shares	+$705,457,909	02 Mar 2026
VANGUARD CAPITAL MANAGEMENT LLC	13D/G 13F Vanguard Capital Management · Company 13D/G 13F	5.8%	$1,440,450,117 21,732,802 shares	$0	31 Mar 2026
James G. Shiel	3/4/5 EVP - Investments 3/4/5	0.27%	$71,844,185 1,018,633 shares	—	03 Aug 2026
Lucille T. Sgaglione	3/4/5 EVP 3/4/5	0.07%	$17,773,023 249,784 shares	—	15 Aug 2025

How to read this table

Rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.

13F holder rows

Institutional holders as of Q3 2026

Investor-level positions for this CUSIP, loaded as an interactive table.

Institutions

115

3,040,295

Rows available

115

Investor	Option	Weight %	Change %	SEC-reported value	* Price	Shares	Share Change	Activity	Report Period

^* SEC-reported price is the security price as of the portfolio date and can indicate the last known price at which the security was still held. The marker flags a reported price that did not pass the local price check.

Compare Q3 2026 vs Q2 2026 Across Filers

Q2 2026 holders

951

Q3 2026 holders

115

Holder diff

-836

Investor	Q2 2026 Shares	Q3 2026 Shares	Share Diff	Share Chg %	Q2 2026 value	Q3 2026 value	Value change	Value Chg %

Trend: ostatnie 8 kwartałów (+ wybrane okresy porównania).

Quarterly Holders Trend

Quarterly Value Trend

Quarterly Shares Trend