Top-5 / Top-10 concentration100.0% / 100.0%
Institutional holdings change
Reducing -1.6%
(-9 sh)
Institutional value change
Down -3.0%
As of Q2 2026, 1 SEC-registered investment managers reported holding WRBPRF (BERKLEY W R CORP CAL) in their latest 13F filings, with a combined reported value of $10.53K across 566 shares. That is -1.6% by share count (-9 shares) versus the previous quarter, while reported value moved -3.0%. Ownership is concentrated: the five largest holders account for 100.0% of reported value and the top ten for 100.0%.
Compared with the prior quarter, 1 trimmed. 13F holdings are quarter-end snapshots, so these moves reflect positioning as of Q2 2026, not real-time trading.
All figures on this page are computed from SEC Form 13F quarterly filings. 13F filers disclose long positions of $100,000 or more within 45 days of quarter end; short positions, options overlays and intra-quarter trades are not included, so treat the numbers as a quarterly snapshot of institutional ownership rather than real-time positioning.