WRB — BERKLEY W R CORPToday's name, from the SEC's present-day ticker list — a present-day mapping, not the name as of each filing.

Congress trades
30
all time
Members · 12m
2
1 buys · 12 sells · by trade date
Latest filing
07-02
2026-07-02
Rows filed past the STOCK Act's 45-day window, stated on the row, never editorialised; both dates and the receipt stay on every row.
0
every row filed inside 45 days
13F holders
685
top 500 listed · 2026-03-31
Congress: statutory ranges, filed up to 45 days after the trade · 13F: quarter-end snapshots, filed up to 45 days lateras of 2026-10-29
Congress 30Institutional 500

Congress · disclosure timeline

By trade date · 24 months · 20 rows ▲ buy, ▼ sell; height = lower bound (log scale). Trade date, not filing date — the filing lag is in the table below.

20 dated disclosures in the window, placed by trade date; magnitudes are the disclosed lower bounds, against gridlines at $15K, $250K, $5M.

Members active in WRB

12 months · most active first Rows = number of disclosures, not dollars. Net = lower bound of the net range. Committees as of each member's latest trade in the window (roster snapshot 2026-10-29).
Members disclosing WRB in the trailing 12 months
MemberRowsNet disclosed flow for this ticker: purchases minus sales, computed as a net range on the disclosed amounts. A lower bound is provable, never a point.Number of committees the member sat on as of their latest trade date in the window, from the cc0-legislators roster snapshot. Context, never an allegation; jurisdiction overlap needs the sector join.
Gilbert Ray Cisneros, Jr. D–CA-3110−$150K to −$10.0K2
Lisa C. McClain R–MI-93−$29.0K to $13.0K2

2 members

Congressional disclosures

Newest filed firstAll 30 rows ↗
Latest congressional filings mentioning WRB
FiledMemberSide · OwnerTraded · LagAmountRange · FlagsSrc
2026-07-02Gilbert Ray Cisneros, Jr. D–CA-31SELL partial (partial sale)Traded 06-05 +27d$1K–$15K
2026-06-08Gilbert Ray Cisneros, Jr. D–CA-31SELL partial (partial sale)Traded 05-29 +10d$1K–$15K
2026-06-08Gilbert Ray Cisneros, Jr. D–CA-31SELL partial (partial sale)Traded 05-19 +20d$1K–$15K
2026-06-08Gilbert Ray Cisneros, Jr. D–CA-31SELL partial (partial sale)Traded 05-14 +25d$1K–$15K
2026-06-08Gilbert Ray Cisneros, Jr. D–CA-31SELL partial (partial sale)Traded 05-13 +26d$1K–$15K
2026-06-08Gilbert Ray Cisneros, Jr. D–CA-31SELL partial (partial sale)Traded 05-12 +27d$1K–$15K
2026-06-08Gilbert Ray Cisneros, Jr. D–CA-31SELL partial (partial sale)Traded 05-07 +32d$1K–$15K
2026-04-07Gilbert Ray Cisneros, Jr. D–CA-31SELL partial (partial sale)Traded 03-18 +20d$1K–$15K
2026-02-13Gilbert Ray Cisneros, Jr. D–CA-31SELL partial (partial sale)Traded 01-20 +24d$1K–$15K
2026-02-13Gilbert Ray Cisneros, Jr. D–CA-31SELL partial (partial sale)Traded 01-06 +38d$1K–$15K

13F holders · Quarter ended 2026-03-31Newest filing in this build: 2026-07-31. Per-row filing dates are on each receipt. · longs only

All holders ↗
Top institutional holders of WRB for quarter 2026-03-31, 1–25 of 685 holders
#FilerValueSecuritiesFlagsderived by Public Filings from this build's reviewed ticker-mapping holders list for this share class; that list carries each holder's share count, share change and filed date (the full holders view shows them), but no document links — the EDGAR link opens the filer's 13F list·§
1MITSUI SUMITOMO INSURANCE CO LTD$3.9B1
derived ·§ EDGAR ↗
2BlackRock, Inc.$1.5B1
derived ·§ EDGAR ↗
3VANGUARD CAPITAL MANAGEMENT LLC$1.3B1
derived ·§ EDGAR ↗
4VANGUARD PORTFOLIO MANAGEMENT LLC$978M1
derived ·§ EDGAR ↗
5STATE STREET CORP$955M1
derived ·§ EDGAR ↗
6MORGAN STANLEY$690M1
derived ·§ EDGAR ↗
7KAYNE ANDERSON RUDNICK INVESTMENT MANAGEMENT LLC$515M1
derived ·§ EDGAR ↗
8Invesco Ltd.$335M1
derived ·§ EDGAR ↗
9FIRST TRUST ADVISORS LP$263M1
derived ·§ EDGAR ↗
10WELLS FARGO & COMPANY/MN$251M1
derived ·§ EDGAR ↗
11DIMENSIONAL FUND ADVISORS LP$250M1
derived ·§ EDGAR ↗
12UBS Group AG$217M1
derived ·§ EDGAR ↗
13BANK OF AMERICA CORP /DE/$193M1
derived ·§ EDGAR ↗
14NORTHERN TRUST CORP$179M1
derived ·§ EDGAR ↗
15Janus Henderson Group Ltd.$163M1
derived ·§ EDGAR ↗
161832 Asset Management L.P.$152M1
derived ·§ EDGAR ↗
17ROYAL LONDON ASSET MANAGEMENT LTD$151M1
derived ·§ EDGAR ↗
18Polar Capital Holdings Plc$151M1
derived ·§ EDGAR ↗
19UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC$144M1
derived ·§ EDGAR ↗
20PRINCIPAL FINANCIAL GROUP INC$127M1
derived ·§ EDGAR ↗
21CHARLES SCHWAB INVESTMENT MANAGEMENT INC$126M1
derived ·§ EDGAR ↗
22Legal & General Group Plc$124M1
derived ·§ EDGAR ↗
23AQR CAPITAL MANAGEMENT LLC$122M1
derived ·§ EDGAR ↗
24VANGUARD FIDUCIARY TRUST CO$110M1
derived ·§ EDGAR ↗
25CITADEL ADVISORS LLC$92.4M1
derived ·§ EDGAR ↗
Show the top 500 of 685 holders
Truncated by Public Filings. Top 500 of 685 holders shown; the rest are on EDGAR. Method ↗

Crowding — not available in this build. No holder rows for the selected period, so no percentile can be ranked.

Congress ↔ notable managers · WRB

Congress · last 90 days

Buyers
0 — —
Sellers
0 — —

filed 2026-07-31 → 2026-10-29 · statutory ranges

Notable managers · quarter ended 2026-03-31

Adding
1 Tudor Investment Corp $28.3M held
Trimming
1 Gotham Asset Management $11.1M held

by shares · $ = value heldNEW + ADD vs TRIM + EXIT, by share count. $ = reported value now, not the change. · BERKLEY W R CORP

Merged timeline of congressional filings and notable-manager moves on WRB
DateWhoChangeSize
2026-05-15Tudor Investment Corp 13FADD+351,330 sh
2026-05-15Gotham Asset Management 13FTRIM−113,999 sh

2 newest, by filing date · 13F rows are quarter-end snapshots, not trades

Congress vs filers

12 months
Congress net (rows)1 buy / 12 sell
Congress net ($ bound)−$179K to $3.0K
Filersnot computedThe filer side needs per-issuer quarter-over-quarter actions, which the published aggregate does not carry for this issuer. Convergence and divergence are stated only when both sides are computed.