WR 버클리 공사
US ˙ NYSE ˙ US0844231029

SecurityWRB / W. R. Berkley Corporation
InstitutionUBS Group AG
Latest Disclosed Ownership3,267,776 shares
Latest Disclosed Value $ 216,588,194
UBS Group AG ownership in WRB / W. R. Berkley Corporation

On May 5, 2026 - UBS Group AG filed a 13F-HR form disclosing ownership of 3,267,776 shares of W. R. Berkley Corporation (US:WRB) valued at $216,588,193 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 29, 2026 disclosing 3,505,867 shares of W. R. Berkley Corporation. This represents a change in shares of -6.79% during the quarter. The current value of the position is $216,686,227 USD.

UBS Group AG has a history of taking positions in derivatives of the underlying security (WRB) in the form of stock options. The firm currently holds call options representing 0 of underlying shares valued at $0 USD and put options representing 0 of underlying shares valued at $0 USD .

Note: prior versions of this page mistakenly stated that the share values represented the number of options, not the number of underlying shares. For more information on the data backing these reports, please see the SEC document Frequently Asked Questions About Form 13F.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Institutional Put/Call Ratios
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In addition to reporting standard equity and debt issues, institutions with more than 100MM assets under management must also disclose their put and call option holdings. Since put options generally indicate negative sentiment, and call options indicate positive sentiment, we can get a sense of the overall institutional sentiment by plotting the ratio of puts to calls. The chart to the right plots the historical put/call ratio for this instrument.

Using Put/Call Ratio as an indicator of investor sentiment overcomes one of the key deficiencies of using total institutional ownership, which is that a significant amount of assets under management are invested passively to track indices. Passively-managed funds do not typically buy options, so the put/call ratio indicator more closely tracks the sentiment of actively-managed funds.

WRB / W. R. Berkley Corporation Historical Put/Call Ratio
Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date
Effective
Date
Form Security Class ID Avg Price
Paid (Est)
Reported
Shares
ΔShares ΔShares
(%)
Reported
Value
(x1000)
ΔValue
(%)
Alloc
(%)
ΔAlloc ΔAlloc (%) Cost Basis
(x1000)
Unrealized
Gain/Loss
(x1000)
2026-05-05 2026-03-31 13F BERKLEY W R COM 084423102 3,267,776 -238,091 -6.79 216,588 -11.90 0.0061
2026-01-29 2025-12-31 13F BERKLEY W R COM 084423102 3,505,867 906,100 34.85 245,831 23.41 0.0399
2025-11-13 2025-09-30 13F BERKLEY W R COM 084423102 2,599,767 -14,474 -0.55 199,194 3.71 0.0312
2025-08-14 2025-06-30 13F BERKLEY W R COM 084423102 2,614,241 4,571 0.18 192,068 3.43 0.0333
2025-05-13 2025-03-31 13F BERKLEY W R COM 084423102 2,609,670 904,706 53.06 185,704 86.12 0.0341
2025-02-14 2024-12-31 13F BERKLEY W R COM 084423102 1,704,964 -683,476 -28.62 99,774 -26.36 0.0184
2024-11-14 2024-09-30 13F BERKLEY W R COM 084423102 2,388,440 1,002,570 72.34 135,496 24.42 0.0295
2024-08-14 2024-06-30 13F BERKLEY W R COM 084423102 1,385,870 -91,712 -6.21 108,902 -16.66 0.0269
2024-05-13 2024-03-31 13F BERKLEY W R COM 084423102 1,477,582 216,382 17.16 130,677 46.51 0.0325
2024-02-09 2023-12-31 13F BERKLEY W R COM 084423102 1,261,200 458,840 57.19 89,192 75.09 0.0267
2023-11-09 2023-09-30 13F BERKLEY W R COM 084423102 802,360 296,928 58.75 50,942 69.22 0.0176
2023-08-11 2023-06-30 13F BERKLEY W R COM 084423102 505,432 114,931 29.43 30,104 23.82 0.0102
2023-05-12 2023-03-31 13F BERKLEY W R COM 084423102 390,501 -102,427 -20.78 24,313 -32.03 0.0089
2023-02-08 2022-12-31 13F BERKLEY W R COM 084423102 492,928 109,891 28.69 35,772 44.61 0.0134
2022-11-10 2022-09-30 13F BERKLEY W R COM 084423102 383,037 -103,500 -21.27 24,737 -25.52 0.0108
2022-08-10 2022-06-30 13F BERKLEY W R COM 084423102 486,537 175,909 56.63 33,211 60.56 0.0136
2022-05-16 2022-03-31 13F BERKLEY W R COM 084423102 310,628 101,594 48.60 20,685 20.11 0.0069
2022-02-14 2021-12-31 13F BERKLEY W R COM 084423102 209,034 107,553 105.98 17,222 131.91 0.0049
2021-11-15 2021-09-30 13F BERKLEY W R COM 084423102 101,481 -145,624 -58.93 7,426 -59.62 0.0023
2021-08-13 2021-06-30 13F BERKLEY W R COM 084423102 247,105 -25,755 -9.44 18,392 -10.55 0.0059
2021-05-12 2021-03-31 13F BERKLEY W R COM 084423102 272,860 8,422 3.18 20,561 17.06 0.0068
2021-02-11 2020-12-31 13F BERKLEY W R COM 084423102 264,438 7,365 2.86 17,564 11.73 0.0059
2020-11-12 2020-09-30 13F BERKLEY W R COM 084423102 257,073 81,811 46.68 15,720 56.57 0.0059
2020-07-31 2020-06-30 13F BERKLEY W R COM 084423102 175,262 104,472 147.58 10,040 171.87 0.0042
2020-05-01 2020-03-31 13F BERKLEY W R COM 084423102 70,790 -112,199 -61.31 3,693 -70.80 0.0017
2020-02-14 2019-12-31 13F BERKLEY W R COM 084423102 182,989 61,994 51.24 12,646 44.69 0.0044
2019-11-14 2019-09-30 13F BERKLEY W R COM 084423102 120,995 16,682 15.99 8,740 27.07 0.0034
2019-08-14 2019-06-30 13F BERKLEY W R COM 084423102 104,313 57,768 124.11 6,878 161.62 0.0026
2019-05-14 2019-03-31 13F BERKLEY W R COM 084423102 46,545 5,589 13.65 2,629 -13.15 0.0011
2019-02-14 2018-12-31 13F W R BERKLEY COM 084423102 40,956 -6,128 -13.02 3,027 -19.58 0.0014
2018-11-14 2018-09-30 13F W R BERKLEY COM 084423102 47,084 25,771 120.92 3,764 143.78 0.0015
2018-08-14 2018-06-30 13F W R BERKLEY COM 084423102 21,313 64 0.30 1,544 -0.06 0.0007
2018-05-15 2018-03-31 13F W R BERKLEY COM 084423102 21,249 -33,864 -61.44 1,545 -60.88 0.0007
2018-02-14 2017-12-31 13F BERKLEY W R COM 084423102 55,113 23,235 72.89 3,949 85.57 0.0016
2017-11-14 2017-09-30 13F BERKLEY W R COM 084423102 31,878 13,559 74.02 2,128 67.96 0.0010
2017-11-14 2017-06-30 13F/A-1 BERKLEY W R COM 084423102 18,319 512 2.88 1,267 0.80 0.0007
2017-08-14 2017-06-30 13F BERKLEY W R COM 084423102 18,319 512 1,267
2017-11-14 2017-03-31 13F/A-1 BERKLEY W R COM 084423102 17,807 -1,622 -8.35 1,257 -2.71 0.0007
2017-05-12 2017-03-31 13F BERKLEY W R COM 084423102 17,807 -1,622 1,257
2017-02-14 2016-12-31 13F BERKLEY W R COM 084423102 19,429 683 3.64 1,292 19.41 0.0007
2016-11-14 2016-09-30 13F BERKLEY W R COM 084423102 18,746 -8,143 -30.28 1,082 -32.84 0.0006
2016-08-12 2016-06-30 13F BERKLEY W R COM 084423102 26,889 924 3.56 1,611 10.42 0.0010
2016-05-12 2016-03-31 13F BERKLEY W R COM 084423102 25,965 -17,365 -40.08 1,459 -38.49 0.0010
2016-02-16 2015-12-31 13F BERKLEY W R COM 084423102 43,330 -30,113 -41.00 2,372 -40.61 0.0015
2015-11-13 2015-09-30 13F BERKLEY W R COM 084423102 73,443 27,338 59.30 3,994 66.83 0.0028
2015-08-14 2015-06-30 13F BERKLEY W R COM 084423102 46,105 370 0.81 2,394 3.64 0.0016
2015-05-14 2015-03-31 13F BERKLEY W R COM 084423102 45,735 -409 -0.89 2,310 -2.33 0.0016
2015-02-17 2014-12-31 13F BERKLEY W R COM 084423102 46,144 46,144 2,365 0.0017
Disclosed Call Options
File
Date
Effective
Date
Form Security Class ID Opt Avg Share
Price
Shares ΔShares
(%)
Value
(x1000)
ΔValue
(%)
Prior Allocation
(%)
Allocation
(%)
ΔAllocation
(%)
Cost Basis
(x1000)
Profit
(x1000)
Return
(%)
2025-02-14 2024-12-31 13F BERKLEY W R COM Call 0 -100.00 0 -100.00 n/a n/a n/a
2024-11-14 2024-09-30 13F BERKLEY W R COM Call 7,000 0.00 397 -27.82 n/a n/a n/a
2024-08-14 2024-06-30 13F BERKLEY W R COM Call 7,000 550 n/a n/a n/a
2015-05-14 2015-03-31 13F BERKLEY W R COM Call 0 -100.00 0 -100.00 n/a n/a n/a
2015-02-17 2014-12-31 13F BERKLEY W R COM Call 100 5 n/a n/a n/a
Disclosed Put Options
File
Date
Effective
Date
Form Security Class ID Opt Avg Share Price Shares ΔShares
(%)
Value
(x1000)
ΔValue
(%)
Prior Allocation
(%)
Allocation
(%)
ΔAllocation
(%)
Cost Basis
(x1000)
Profit
(x1000)
Return
(%)
2015-05-14 2015-03-31 13F BERKLEY W R COM Put 0 -100.00 0 -100.00 n/a n/a n/a
2015-02-17 2014-12-31 13F BERKLEY W R COM Put 200 10 n/a n/a n/a
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.