Assurant, Inc.
MX ˙ BMV ˙ US04621X1081
SecurityMX:AIZ / Assurant, Inc.
InstitutionM&t Bank Corp
Latest Disclosed Ownership3,680 shares
Latest Disclosed Value $ 801,541
M&t Bank Corp reports 14.91% decrease in ownership of AIZ / Assurant, Inc.

On May 12, 2026 - M&t Bank Corp filed a 13F-HR form disclosing ownership of 3,680 shares of Assurant, Inc. (MX:AIZ) valued at $801,541 USD as of March 31, 2026. The entity filed a previous 13F-HR/A on January 30, 2026 disclosing 4,325 shares of Assurant, Inc.. This represents a change in shares of -14.91% 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)
2026-05-12 2026-03-31 13F ASSURANT COM 04621X108 3,680 -645 -14.91 802 -23.05 0.0027
2026-01-30 2025-12-31 13F/A-1 ASSURANT COM 04621X108 4,325 897 26.17 1,042 40.30 0.0033
2026-01-28 2025-12-31 13F ASSURANT COM 04621X108 5,424 1,996 624 0.0004
2025-11-14 2025-09-30 13F ASSURANT COM 04621X108 3,428 -52 -1.49 742 8.01 0.0025
2025-08-13 2025-06-30 13F ASSURANT COM 04621X108 3,480 1,339 62.54 688 53.35 0.0024
2025-04-30 2025-03-31 13F ASSURANT COM 04621X108 2,141 785 57.89 449 55.02 0.0016
2025-02-06 2024-12-31 13F ASSURANT COM 04621X108 1,356 120 9.71 289 17.96 0.0010
2024-11-19 2024-09-30 13F/A-1 ASSURANT COM 04621X108 1,236 7 0.57 246 20.10 0.0008
2024-11-15 2024-09-30 13F ASSURANT COM 04621X108 1,236 7 246 0.0001
2024-07-31 2024-06-30 13F ASSURANT COM 04621X108 1,229 -64 -4.95 204 -16.05 0.0007
2024-05-07 2024-03-31 13F ASSURANT COM 04621X108 1,293 -434 -25.13 243 -16.49 0.0008
2024-02-06 2023-12-31 13F ASSURANT COM 04621X108 1,727 37 2.19 291 20.25 0.0011
2023-11-02 2023-09-30 13F ASSURANT COM 04621X108 1,690 -28 -1.63 243 12.56 0.0010
2023-08-09 2023-06-30 13F ASSURANT COM 04621X108 1,718 -110 -6.02 216 -1.83 0.0008
2023-05-11 2023-03-31 13F ASSURANT COM 04621X108 1,828 141 8.36 219 4.29 0.0008
2023-02-13 2022-12-31 13F/A-1 ASSURANT COM 04621X108 1,687 1,687 211 0.0008
2023-02-13 2022-12-31 13F ASPIRA WOMENS HEALTH COM 04621X108 201,600 201,600 267 0.0011
2022-08-05 2022-06-30 13F ASSURANT COM 04621X108 0 -1,213 -100.00 0 -100.00
2022-05-09 2022-03-31 13F ASSURANT COM 04621X108 1,213 -223 -15.53 221 -1.34 0.0010
2022-02-07 2021-12-31 13F ASSURANT COM 04621X108 1,436 0 0.00 224 -1.32 0.0009
2021-10-28 2021-09-30 13F ASSURANT COM 04621X108 1,436 -3 -0.21 227 0.89 0.0010
2021-08-13 2021-06-30 13F ASSURANT COM 04621X108 1,439 -433 -23.13 225 -15.09 0.0010
2021-05-06 2021-03-31 13F ASSURANT COM 04621X108 1,872 179 10.57 265 15.22 0.0011
2021-02-12 2020-12-31 13F ASSURANT COM 04621X108 1,693 0 0.00 230 12.20 0.0010
2020-11-06 2020-09-30 13F ASSURANT COM 04621X108 1,693 1,693 205 0.0010
2020-05-14 2020-03-31 13F ASSURANT COM 04621X108 0 -2,901 -100.00 0 -100.00
2020-02-07 2019-12-31 13F ASSURANT COM 04621X108 2,901 47 1.65 380 5.85 0.0018
2019-11-12 2019-09-30 13F ASSURANT COM 04621X108 2,854 18 0.63 359 18.87 0.0018
2019-08-12 2019-06-30 13F ASSURANT COM 04621X108 2,836 -381 -11.84 302 -0.98 0.0016
2019-05-15 2019-03-31 13F ASSURANT COM 04621X108 3,217 -809 -20.09 305 -15.04 0.0016
2019-02-01 2018-12-31 13F ASSURANT COM 04621X108 4,026 93 2.36 359 -15.53 0.0021
2018-11-09 2018-09-30 13F ASSURANT COM 04621X108 3,933 459 13.21 425 18.06 0.0021
2018-08-10 2018-06-30 13F ASSURANT COM 04621X108 3,474 74 2.18 360 15.76 0.0019
2018-05-04 2018-03-31 13F ASSURANT COM 04621X108 3,400 -636 -15.76 311 -23.77 0.0017
2018-02-06 2017-12-31 13F ASSURANT COM 04621X108 4,036 -20 -0.49 408 5.43 0.0021
2017-11-13 2017-09-30 13F ASSURANT COM 04621X108 4,056 -1,857 -31.41 387 -36.97 0.0021
2017-08-11 2017-06-30 13F ASSURANT COM 04621X108 5,913 -942 -13.74 614 -6.26 0.0036
2017-05-10 2017-03-31 13F ASSURANT COM 04621X108 6,855 -53 -0.77 655 2.18 0.0040
2017-02-14 2016-12-31 13F ASSURANT COM 04621X108 6,908 -3,751 -35.19 641 -34.79 0.0040
2016-11-04 2016-09-30 13F ASSURANT COM 04621X108 10,659 5,646 112.63 983 127.02 0.0063
2016-08-04 2016-06-30 13F ASSURANT COM 04621X108 5,013 -35 -0.69 433 11.31 0.0029
2016-05-11 2016-03-31 13F ASSURANT COM 04621X108 5,048 355 7.56 389 2.91 0.0026
2016-02-12 2015-12-31 13F ASSURANT COM 04621X108 4,693 373 8.63 378 10.85 0.0025
2015-11-13 2015-09-30 13F ASSURANT COM 04621X108 4,320 987 29.61 341 52.91 0.0023
2015-08-14 2015-06-30 13F ASSURANT COM 04621X108 3,333 7 0.21 223 8.78 0.0013
2015-05-14 2015-03-31 13F ASSURANT COM 04621X108 3,326 -1,026 -23.58 205 -30.98 0.0013
2015-02-12 2014-12-31 13F ASSURANT COM 04621X108 4,352 79 1.85 297 8.00 0.0019
2014-11-14 2014-09-30 13F ASSURANT COM 04621X108 4,273 4,273 275 0.0019
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.