Assurant, Inc.
MX ˙ BMV ˙ US04621X1081
SecurityMX:AIZ / Assurant, Inc.
InstitutionAsset Management One Co., Ltd.
Latest Disclosed Ownership1,842 shares
Latest Disclosed Value $ 401,206
Asset Management One Co., Ltd. reports 2.02% decrease in ownership of AIZ / Assurant, Inc.

On May 8, 2026 - Asset Management One Co., Ltd. filed a 13F-HR form disclosing ownership of 1,842 shares of Assurant, Inc. (MX:AIZ) valued at $401,206 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 27, 2026 disclosing 1,880 shares of Assurant, Inc.. This represents a change in shares of -2.02% 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)
2026-05-08 2026-03-31 13F ASSURANT COM 04621X108 1,842 -38 -2.02 401 -11.48 0.0012
2026-01-27 2025-12-31 13F ASSURANT COM 04621X108 1,880 69 3.81 454 15.56 0.0013
2025-10-22 2025-09-30 13F ASSURANT COM 04621X108 1,811 145 8.70 392 19.15 0.0011
2025-07-31 2025-06-30 13F ASSURANT COM 04621X108 1,666 -21,416 -92.78 329 -93.20 0.0010
2025-04-23 2025-03-31 13F ASSURANT COM 04621X108 23,082 1,169 5.33 4,841 2.74 0.0167
2025-01-30 2024-12-31 13F ASSURANT COM 04621X108 21,913 -1,187 -5.14 4,712 2.59 0.0162
2024-10-30 2024-09-30 13F ASSURANT COM 04621X108 23,100 -567 -2.40 4,594 16.75 0.0163
2024-07-18 2024-06-30 13F ASSURANT COM 04621X108 23,667 868 3.81 3,935 -8.32 0.0151
2024-05-02 2024-03-31 13F ASSURANT COM 04621X108 22,799 436 1.95 4,292 14.18 0.0165
2024-01-24 2023-12-31 13F ASSURANT COM 04621X108 22,363 194 0.88 3,758 18.06 0.0151
2023-10-19 2023-09-30 13F ASSURANT COM 04621X108 22,169 -442 -1.95 3,183 12.00 0.0142
2023-07-31 2023-06-30 13F ASSURANT COM 04621X108 22,611 -884 -3.76 2,843 0.74 0.0120
2023-04-25 2023-03-31 13F ASSURANT COM 04621X108 23,495 3,058 14.96 2,821 9.09 0.0128
2023-02-06 2022-12-31 13F ASSURANT COM 04621X108 20,437 -2,604 -11.30 2,587 -22.74 0.0126
2022-11-04 2022-09-30 13F ASSURANT COM 04621X108 23,041 -6,973 -23.23 3,347 -35.47 0.0170
2022-07-29 2022-06-30 13F ASSURANT COM 04621X108 30,014 118 0.39 5,187 -4.56 0.0244
2022-05-13 2022-03-31 13F ASSURANT COM 04621X108 29,896 1,997 7.16 5,435 25.93 0.0212
2022-02-09 2021-12-31 13F ASSURANT COM 04621X108 27,899 2,705 10.74 4,316 8.61 0.0150
2021-11-02 2021-09-30 13F ASSURANT COM 04621X108 25,194 -919 -3.52 3,974 -2.55 0.0152
2021-08-03 2021-06-30 13F ASSURANT COM 04621X108 26,113 -1,906 -6.80 4,078 2.67 0.0152
2021-05-14 2021-03-31 13F ASSURANT COM 04621X108 28,019 -589 -2.06 3,972 4.69 0.0158
2021-02-12 2020-12-31 13F ASSURANT COM 04621X108 28,608 343 1.21 3,794 10.61 0.0156
2020-11-13 2020-09-30 13F ASSURANT COM 04621X108 28,265 -1,686 -5.63 3,430 10.79 0.0158
2020-08-14 2020-06-30 13F ASSURANT COM 04621X108 29,951 -1,383 -4.41 3,096 -5.03 0.0152
2020-05-14 2020-03-31 13F ASSURANT COM 04621X108 31,334 23 0.07 3,260 -20.57 0.0190
2020-02-14 2019-12-31 13F ASSURANT COM 04621X108 31,311 -118 -0.38 4,104 3.82 0.0185
2019-11-14 2019-09-30 13F ASSURANT COM 04621X108 31,429 -358 -1.13 3,953 16.92 0.0190
2019-08-14 2019-06-30 13F ASSURANT COM 04621X108 31,787 7,428 30.49 3,381 46.43 0.0166
2019-05-15 2019-03-31 13F ASSURANT COM 04621X108 24,359 -64,306 -72.53 2,309 -70.86 0.0125
2019-02-13 2018-12-31 13F ASSURANT COM 04621X108 88,665 156 0.18 7,923 -17.01 0.0189
2018-11-14 2018-09-30 13F ASSURANT COM 04621X108 88,509 -602 -0.68 9,547 3.43 0.0196
2018-08-14 2018-06-30 13F ASSURANT COM 04621X108 89,111 837 0.95 9,230 14.37 0.0202
2018-05-14 2018-03-31 13F ASSURANT COM 04621X108 88,274 104 0.12 8,070 -9.29 0.0182
2018-02-14 2017-12-31 13F ASSURANT COM 04621X108 88,170 -223 -0.25 8,896 5.35 0.0196
2017-11-14 2017-09-30 13F ASSURANT COM 04621X108 88,393 -2,860 -3.13 8,444 -10.79 0.0198
2017-08-14 2017-06-30 13F ASSURANT COM 04621X108 91,253 -4,407 -4.61 9,465 3.43 0.0242
2017-05-11 2017-03-31 13F ASSURANT COM 04621X108 95,660 -15,599 -14.02 9,151 -11.41 0.0240
2017-05-02 2016-12-31 13F/A-1 ASSURANT COM 04621X108 111,259 98,735 788.37 10,330 798.26 0.0264
2017-02-13 2016-12-31 13F ASSURANT COM 04621X108 111,259 10,330
2016-11-07 2016-09-30 13F ASSURANT Com 04621X108 12,524 -2,402 -16.09 1,150 -9.66 0.0171
2016-08-03 2016-06-30 13F ASSURANT Com 04621X108 14,926 -7,826 -34.40 1,273 -28.20 0.0191
2016-05-05 2016-03-31 13F ASSURANT Com 04621X108 22,752 -6,966 -23.44 1,773 -26.64 0.0259
2016-01-28 2015-12-31 13F ASSURANT Com 04621X108 29,718 936 3.25 2,417 7.42 0.0361
2015-11-12 2015-09-30 13F ASSURANT Com 04621X108 28,782 21,471 293.68 2,250 362.01 0.0342
2015-08-06 2015-06-30 13F ASSURANT Com 04621X108 7,311 -32,490 -81.63 487 -80.08 0.0067
2015-05-11 2015-03-31 13F ASSURANT Com 04621X108 39,801 0 0.00 2,445 -10.41 0.0302
2015-02-09 2014-12-31 13F ASSURANT Com 04621X108 39,801 -400 -1.00 2,729 5.53 0.0354
2014-11-05 2014-09-30 13F ASSURANT Com 04621X108 40,201 0 0.00 2,586 -1.82 0.0357
2014-08-12 2014-06-30 13F ASSURANT Com 04621X108 40,201 7,765 23.94 2,634 25.61 0.0393
2014-05-05 2014-03-31 13F ASSURANT Com 04621X108 32,436 -25,482 -44.00 2,097 -45.42 0.0330
2014-02-05 2013-12-31 13F/A-1 ASSURANT COM 04621X108 57,918 -28,282 -32.81 3,842 -17.64 0.0595
2014-01-29 2013-12-31 13F ASSURANT COM 04621X108 57,918 3,842
2014-02-05 2013-09-30 13F/A-1 ASSURANT COM 04621X108 86,200 -5,034 -5.52 4,665 0.43 0.0702
2013-11-06 2013-09-30 13F ASSURANT Com 04621X108 86,200 4,665
2014-02-12 2013-06-30 13F/A-1 ASSURANT COM 04621X108 91,234 91,234 4,645 0.0754
2013-08-05 2013-06-30 13F ASSURANT Com 04621X108 91,234 4,645
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.