브라운앤브라운(주)
MX ˙ BMV ˙ US1152361010
SecurityMX:BRO / Brown & Brown, Inc.
InstitutionMattern Capital Management, Llc
Latest Disclosed Ownership142,695 shares
Latest Disclosed Value $ 9,305,141
Mattern Capital Management, Llc reports 3.86% increase in ownership of BRO / Brown & Brown, Inc.

On May 4, 2026 - Mattern Capital Management, Llc filed a 13F-HR form disclosing ownership of 142,695 shares of Brown & Brown, Inc. (MX:BRO) valued at $9,305,141 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 29, 2026 disclosing 137,386 shares of Brown & Brown, Inc.. This represents a change in shares of 3.86% during the quarter.

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)
2026-05-04 2026-03-31 13F BROWN & BROWN COM 115236101 142,695 5,309 3.86 9,305 -15.02 1.1145
2026-01-29 2025-12-31 13F BROWN & BROWN COM 115236101 137,386 5,007 3.78 10,950 -11.81 1.2928
2025-10-21 2025-09-30 13F BROWN & BROWN COM 115236101 132,379 13,181 11.06 12,416 -6.05 1.4597
2025-07-21 2025-06-30 13F BROWN & BROWN COM 115236101 119,198 636 0.54 13,215 -10.40 1.5876
2025-04-23 2025-03-31 13F BROWN & BROWN COM 115236101 118,562 -8,176 -6.45 14,749 14.08 1.8779
2025-02-03 2024-12-31 13F BROWN & BROWN COM 115236101 126,738 -2,668 -2.06 12,930 -3.56 1.6849
2024-10-24 2024-09-30 13F BROWN & BROWN COM 115236101 129,406 -1,103 -0.85 13,406 14.90 1.6872
2024-08-02 2024-06-30 13F BROWN & BROWN COM 115236101 130,509 -1,238 -0.94 11,669 1.17 1.6121
2024-05-14 2024-03-31 13F BROWN & BROWN COM 115236101 131,747 -1,366 -1.03 11,533 21.85 1.5660
2024-02-14 2023-12-31 13F BROWN & BROWN COM 115236101 133,113 3,293 2.54 9,466 4.40 1.3760
2023-11-08 2023-09-30 13F BROWN & BROWN COM 115236101 129,820 5,564 4.48 9,067 6.00 1.4667
2023-08-08 2023-06-30 13F BROWN & BROWN COM 115236101 124,256 2,909 2.40 8,554 22.76 1.3885
2023-05-12 2023-03-31 13F BROWN & BROWN COM 115236101 121,347 4,299 3.67 6,968 4.48 1.2292
2023-02-06 2022-12-31 13F BROWN & BROWN COM 115236101 117,048 7,166 6.52 6,668 0.33 1.2330
2022-11-08 2022-09-30 13F BROWN & BROWN COM 115236101 109,882 -2,704 -2.40 6,646 1.19 1.3846
2022-08-08 2022-06-30 13F BROWN & BROWN COM 115236101 112,586 -5,228 -4.44 6,568 -22.86 1.2987
2022-05-03 2022-03-31 13F BROWN & BROWN COM 115236101 117,814 1,538 1.32 8,514 4.19 1.5224
2022-02-03 2021-12-31 13F BROWN & BROWN COM 115236101 116,276 -3,080 -2.58 8,172 23.48 1.4294
2021-11-01 2021-09-30 13F BROWN & BROWN COM 115236101 119,356 1,022 0.86 6,618 5.25 1.3063
2021-08-03 2021-06-30 13F BROWN & BROWN COM 115236101 118,334 4,117 3.60 6,288 20.44 1.2433
2021-05-17 2021-03-31 13F BROWN & BROWN COM 115236101 114,217 4,945 4.53 5,221 0.77 1.1291
2021-02-03 2020-12-31 13F BROWN & BROWN COM 115236101 109,272 283 0.26 5,181 5.01 1.2416
2020-11-16 2020-09-30 13F BROWN & BROWN COM 115236101 108,989 266 0.24 4,934 11.33 1.2892
2020-08-07 2020-06-30 13F BROWN & BROWN COM 115236101 108,723 79 0.07 4,432 12.63 1.2863
2020-05-11 2020-03-31 13F BROWN & BROWN COM 115236101 108,644 -5,335 -4.68 3,935 -12.56 1.3391
2020-02-13 2019-12-31 13F BROWN & BROWN COM 115236101 113,979 113,979 4,500 1.2448
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.