Security key
084423102
BERKLEY W R CORP - Common Stock, par value $0.20 per share (WRB)
CUSIP: 084423102
Q4 2025 13F Holders as of 31 Dec 2025
- Security type / class
- Equity / Common Stock, par value $0.20 per share
- Total 13F shares
- 284,305,965
- Total 13F value
- $19,934,297,638
- Share change
- -11,766,674
- Put/Call ratio
- 54%
- SEC-reported price per share
- $70.12
- Number of holders
- 943
- Value change
- -$892,658,557
- Number of buys
- 395
- Number of sells
- 446
- Shares outstanding
- 372,252,918
Holder snapshot
7 signals
Open additional details 1 more signal available
Security identity
Names, identifiers, and filing context for this profile.
1 source field
Report period
Q4 2025
Institutions
943
Top holders
10
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
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
Lucille T. Sgaglione
Disclosed value leader
VANGUARD GROUP INC
Comparable rows
15/15
Latest evidence
30 Sep 2025
3/4/5
13F
Lead comparable stake: 0.07%
Showing 1-6 of 15 holder rows.
Quick read
Lucille T. Sgaglione leads the comparable SEC ownership view at 0.07%.
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 Lucille T. Sgaglione's linked filing trail.
Comparable ownership
Top 5
Lucille T. Sgaglione
0.07%
VANGUARD GROUP INC
9.9%
BlackRock, Inc.
6.7%
STATE STREET CORP
4%
MORGAN STANLEY
3.2%
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 |
|---|---|---|---|---|---|
| Lucille T. Sgaglione |
3/4/5
EVP
|
0.07%
|
$17,773,023
249,784 shares
|
— | 15 Aug 2025 |
| VANGUARD GROUP INC |
13F
Company
|
9.9%
|
$2,813,773,954
36,723,753 shares
|
— | 30 Sep 2025 |
| BlackRock, Inc. |
13F
Company
|
6.7%
|
$1,898,242,872
24,774,770 shares
|
— | 30 Sep 2025 |
| STATE STREET CORP |
13F
Company
|
4%
|
$1,143,255,755
14,921,114 shares
|
— | 30 Sep 2025 |
| MORGAN STANLEY |
13F
Company
|
3.2%
|
$904,466,251
11,804,567 shares
|
— | 30 Sep 2025 |
| KAYNE ANDERSON RUDNICK INVESTMENT MANAGEMENT LLC |
13F
Company
|
2.6%
|
$727,463,906
9,494,438 shares
|
— | 30 Sep 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 Q4 2025
Investor-level positions for this CUSIP, loaded as an interactive table.
Institutions
943
Shares
284,305,965
Rows available
943
| 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 Q4 2025 vs Q3 2025 Across Filers
Q3 2025 holders
918
Q4 2025 holders
943
Holder diff
25
| Investor | Q3 2025 Shares | Q4 2025 Shares | Share Diff | Share Chg % | Q3 2025 value | Q4 2025 value | Value change | Value Chg % |
|---|