Chubb Limited
US ˙ NYSE ˙ CH0044328745

SecurityCB / Chubb Limited
InstitutionRosenberg Matthew Hamilton
Latest Disclosed Ownership331 shares
Latest Disclosed Value $ 107,883
Rosenberg Matthew Hamilton ownership in CB / Chubb Limited

On April 6, 2026 - Rosenberg Matthew Hamilton filed a 13F-HR form disclosing ownership of 331 shares of Chubb Limited (US:CB) valued at $107,883 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 5, 2026 disclosing 331 shares of Chubb Limited. This represents a change in shares of 0.00% during the quarter. The current value of the position is $107,995 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)
2026-04-06 2026-03-31 13F CHUBB LTD SWITZ COM Stock H1467J104 331 0 0.00 108 3.88 0.0221
2026-01-05 2025-12-31 13F CHUBB LIMITED COM Stock H1467J104 331 -20 -5.70 103 4.04 0.0214
2025-11-10 2025-09-30 13F CHUBB LIMITED COM Stock H1467J104 351 0 0.00 99 -1.98 0.0214
2025-07-28 2025-06-30 13F CHUBB LIMITED COM Stock H1467J104 351 0 0.00 102 -3.81 0.0236
2025-04-28 2025-03-31 13F CHUBB LIMITED COM Stock H1467J104 351 31 9.69 106 19.32 0.0266
2025-01-14 2024-12-31 13F CHUBB LIMITED COM Stock H1467J104 320 153 91.62 88 83.33 0.0230
2024-10-28 2024-09-30 13F CHUBB LIMITED COM Stock H1467J104 167 0 0.00 48 14.29 0.0126
2024-07-26 2024-06-30 13F CHUBB LIMITED COM Stock H1467J104 167 0 0.00 43 0.00 0.0126
2024-04-22 2024-03-31 13F CHUBB LIMITED COM Stock H1467J104 167 -31 -15.66 43 -4.55 0.0124
2024-01-16 2023-12-31 13F CHUBB LIMITED COM Stock H1467J104 198 0 0.00 45 7.32 0.0138
2023-10-11 2023-09-30 13F CHUBB LIMITED COM Stock H1467J104 198 -39 -16.46 41 -8.89 0.0137
2023-07-26 2023-06-30 13F CHUBB LIMITED COM Stock H1467J104 237 1 0.42 46 0.00 0.0154
2023-04-17 2023-03-31 13F CHUBB LIMITED COM Stock H1467J104 236 0 0.00 46 -13.46 0.0148
2023-01-19 2022-12-31 13F CHUBB LIMITED COM Stock H1467J104 236 39 19.80 52 44.44 0.0176
2022-10-21 2022-09-30 13F CHUBB LIMITED COM Stock H1467J104 197 0 0.00 36 -7.69 0.0139
2022-07-15 2022-06-30 13F CHUBB LIMITED COM Stock H1467J104 197 30 17.96 39 8.33 0.0147
2022-04-14 2022-03-31 13F CHUBB LIMITED COM Stock H1467J104 167 55 49.11 36 63.64 0.0126
2022-01-20 2021-12-31 13F CHUBB COM H1467J104 112 0 0.00 22 15.79 0.0078
2021-10-12 2021-09-30 13F CHUBB COM H1467J104 112 54 93.10 19 111.11 0.0075
2021-07-26 2021-06-30 13F CHUBB COM H1467J104 58 0 0.00 9 0.00 0.0047
2021-04-30 2021-03-31 13F CHUBB COM H1467J104 58 0 0.00 9 0.00 0.0051
2021-02-03 2020-12-31 13F CHUBB COM H1467J104 58 0 0.00 9 28.57 0.0056
2020-10-16 2020-09-30 13F CHUBB COM H1467J104 58 0 0.00 7 0.00 0.0051
2020-08-04 2020-06-30 13F CHUBB COM H1467J104 58 58 7 0.0056
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.