프로보증 공사
US ˙ NYSE ˙ US74267C1062

SecurityPRA / ProAssurance Corporation
InstitutionJanus Henderson Group Plc
Latest Disclosed Ownership678,775 shares
Latest Disclosed Value $ 16,782,354
Janus Henderson Group Plc reports 35.12% decrease in ownership of PRA / ProAssurance Corporation

On May 18, 2026 - Janus Henderson Group Plc filed a 13F-HR/A form disclosing ownership of 678,775 shares of ProAssurance Corporation (US:PRA) valued at $16,779,318 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 1,046,127 shares of ProAssurance Corporation. This represents a change in shares of -35.12% during the quarter. The current value of the position is $16,772,530 USD.

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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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)
2026-05-18 2026-03-31 13F/A-1 PROASSURANCE COM 74267C106 678,775 -367,352 -35.12 16,782 -33.62 0.0028
2026-05-15 2026-03-31 13F PROASSURANCE COM 74267C106 678,775 -367,352 16,782 0.0031
2026-02-17 2025-12-31 13F PROASSURANCE COM 74267C106 1,046,127 -301,640 -22.38 25,283 -21.80 0.0113
2025-11-14 2025-09-30 13F PROASSURANCE COM 74267C106 1,347,767 -62,017 -4.40 32,330 0.44 0.0148
2025-08-14 2025-06-30 13F PROASSURANCE COM 74267C106 1,409,784 417,928 42.14 32,188 39.05 0.0158
2025-05-15 2025-03-31 13F PROASSURANCE COM 74267C106 991,856 346,498 53.69 23,150 125.47 0.0127
2025-02-14 2024-12-31 13F PROASSURANCE COM 74267C106 645,358 621,935 2,655.23 10,268 2,816.76 0.0052
2024-11-14 2024-09-30 13F PROASSURANCE COM 74267C106 23,423 0 0.00 352 23.08 0.0002
2024-08-14 2024-06-30 13F PROASSURANCE COM 74267C106 23,423 -261 -1.10 286 -5.92 0.0002
2024-05-15 2024-03-31 13F PROASSURANCE COM 74267C106 23,684 -3 -0.01 305 -6.75 0.0002
2024-02-14 2023-12-31 13F PROASSURANCE COM 74267C106 23,687 -41 -0.17 326 -27.23 0.0002
2023-11-14 2023-09-30 13F PROASSURANCE COM 74267C106 23,728 -10 -0.04 449 25.14 0.0003
2023-08-14 2023-06-30 13F PROASSURANCE COM 74267C106 23,738 -28 -0.12 358 -18.26 0.0002
2023-05-15 2023-03-31 13F PROASSURANCE COM 74267C106 23,766 12,822 117.16 439 129.32 0.0003
2023-02-14 2022-12-31 13F PROASSURANCE COM 74267C106 10,944 0 0.00 191 -10.75 0.0001
2023-01-13 2022-09-30 13F/A-1 PROASSURANCE COM 74267C106 10,944 20 0.18 214 -17.37 0.0002
2022-11-14 2022-09-30 13F PROASSURANCE COM 74267C106 10,944 20 214 0.0001
2022-08-15 2022-06-30 13F PROASSURANCE COM 74267C106 10,924 -17 -0.16 259 -11.90 0.0002
2022-05-16 2022-03-31 13F PROASSURANCE COM 74267C106 10,941 0 0.00 294 6.14 0.0001
2022-02-14 2021-12-31 13F PROASSURANCE COM 74267C106 10,941 10,941 277 0.0001
2018-08-10 2018-06-30 13F PROASSURANCE COM 74267C106 0 -7,100 -100.00 0 -100.00
2018-05-14 2018-03-31 13F PROASSURANCE COM 74267C106 7,100 -4,000 -36.04 345 -45.58 0.0002
2018-03-12 2017-12-31 13F/A-1 PROASSURANCE COM 74267C106 11,100 -57,020 -83.71 634 -82.97 0.0004
2018-02-09 2017-12-31 13F PROASSURANCE COM 74267C106 11,100 -57,020 634
2017-11-14 2017-09-30 13F PROASSURANCE COM 74267C106 68,120 -78,200 -53.44 3,723 -58.15 0.0024
2017-08-17 2017-06-30 13F/A-1 PROASSURANCE COM 74267C106 146,320 146,320 8,896 0.0061
2017-08-14 2017-06-30 13F PROASSURANCE COM 74267C106 146,320 8,896
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.