Tracked funds
5Unique WSM-tracked managers; table rows may include common shares and optionsWRB
Ticker case file
WRB
BERKLEY W R CORP
$65.29+0.17%NYQ
Politicians active
2Recent transactions disclosed via House Clerk / Senate eFD13F notional
$238.5M2026-03-31Top conviction
0.01%max % across any fund's portfolioThis page is the WSM tracked universe, not market-wide ownership. 13F rows are quarterly snapshots, about 45 days delayed; PTR rows are event-based public disclosures.
13F filing
Funds holding this ticker
| Manager | 13F value | Conviction | Class | Option | Reported | SEC filing |
|---|---|---|---|---|---|---|
| Citadel Advisors LLCOther | $92.4M | 0.01% | SH | — | 2026-03-31 | SEC filing |
| FMR LLCOther | $92.1M | 0.00% | SH | — | 2026-03-31 | SEC filing |
| Millennium Management LLCOther | $30.4M | 0.01% | SH | — | 2026-03-31 | SEC filing |
| Two Sigma Investments, LPOther | $18.1M | 0.01% | SH | — | 2026-03-31 | SEC filing |
| Citadel Advisors LLCOther | $2.8M | 0.00% | SH | CALL | 2026-03-31 | SEC filing |
| Citadel Advisors LLCHedge | $1.7M | 0.00% | SH | PUT | 2026-03-31 | SEC filing |
| Balyasny Asset Management L.P.Other | $901.9K | 0.00% | SH | — | 2026-03-31 | SEC filing |
Politician
Politician PTR activity
| Public date | Politician | Action | Owner | Amount range | Filing |
|---|---|---|---|---|---|
| 2026-04-07 | Gilbert Cisneros HouseholdD · CA-31 | Sale (Partial) | Self | $1K–$15K | 20034285 |
| 2026-02-13 | Gilbert Cisneros HouseholdD · CA-31 | Sale (Partial) | Self | $1K–$15K | 20033983 |
| 2026-02-13 | Gilbert Cisneros HouseholdD · CA-31 | Sale (Partial) | Self | $1K–$15K | 20033983 |
| 2025-11-21 | Lisa Mcclain HouseholdR · MI-09 | Sale | Self | $1K–$15K | 20033446 |
| 2025-11-21 | Lisa Mcclain HouseholdR · MI-09 | Sale | Self | $1K–$15K | 20033446 |
| 2025-11-21 | Lisa Mcclain HouseholdR · MI-09 | Purchase | Self | $1K–$15K | 20033446 |
| 2025-08-14 | Gilbert Cisneros HouseholdD · CA-31 | Sale (Partial) | Self | $1K–$15K | 20030901 |
| 2025-08-13 | Lisa Mcclain HouseholdR · MI-09 | Purchase | Self | $1K–$15K | 20030891 |
| 2025-05-06 | Gilbert Cisneros HouseholdD · CA-31 | Sale (Partial) | Self | $1K–$15K | 20030288 |
| 2025-05-06 | Gilbert Cisneros HouseholdD · CA-31 | Sale (Partial) | Self | $1K–$15K | 20030288 |
| 2025-05-06 | Gilbert Cisneros HouseholdD · CA-31 | Sale (Partial) | Self | $1K–$15K | 20030288 |
| 2025-04-07 | Gilbert Cisneros HouseholdD · CA-31 | Sale (Partial) | Self | $1K–$15K | 20029026 |
| 2025-04-07 | Gilbert Cisneros HouseholdD · CA-31 | Sale (Partial) | Self | $1K–$15K | 20029026 |
Combined activity
13F filings + PTR transactions, newest first
- 13F filing2026-05-15Citadel Advisors LLC · $92.4M↗
- 13F filing2026-05-15FMR LLC · $92.1M↗
- 13F filing2026-05-15Millennium Management LLC · $30.4M↗
- 13F filing2026-05-15Two Sigma Investments, LP · $18.1M↗
- 13F filing2026-05-15Citadel Advisors LLC · $2.8M↗
- 13F filing2026-05-15Citadel Advisors LLC · $1.7M↗
- 13F filing2026-05-15Balyasny Asset Management L.P. · $901.9K↗
- PTR2026-04-07Gilbert Cisneros Household · Sale (Partial) · $1K–$15K↗
- PTR2026-02-13Gilbert Cisneros Household · Sale (Partial) · $1K–$15K↗
- PTR2026-02-13Gilbert Cisneros Household · Sale (Partial) · $1K–$15K↗
- PTR2025-11-21Lisa Mcclain Household · Sale · $1K–$15K↗
- PTR2025-11-21Lisa Mcclain Household · Sale · $1K–$15K↗
- PTR2025-11-21Lisa Mcclain Household · Purchase · $1K–$15K↗
- PTR2025-08-14Gilbert Cisneros Household · Sale (Partial) · $1K–$15K↗
- PTR2025-08-13Lisa Mcclain Household · Purchase · $1K–$15K↗
- PTR2025-05-06Gilbert Cisneros Household · Sale (Partial) · $1K–$15K↗
- PTR2025-05-06Gilbert Cisneros Household · Sale (Partial) · $1K–$15K↗
- PTR2025-05-06Gilbert Cisneros Household · Sale (Partial) · $1K–$15K↗
- PTR2025-04-07Gilbert Cisneros Household · Sale (Partial) · $1K–$15K↗
- PTR2025-04-07Gilbert Cisneros Household · Sale (Partial) · $1K–$15K↗
Often co-held with