Assurant, Inc.
US ˙ NYSE ˙ US04621X1081

SecurityAIZ / Assurant, Inc.
InstitutionSei Investments Co
Latest Disclosed Ownership61,808 shares
Latest Disclosed Value $ 14,886,449
Sei Investments Co ownership in AIZ / Assurant, Inc.

On February 13, 2026 - Sei Investments Co filed a 13F-HR form disclosing ownership of 61,808 shares of Assurant, Inc. (US:AIZ) valued at $14,886,457 USD as of December 31, 2025. The entity filed a previous 13F-HR on November 13, 2025 disclosing 50,399 shares of Assurant, Inc.. This represents a change in shares of 22.64% during the quarter. The current value of the position is $15,354,343 USD.

Sei Investments Co has a history of taking positions in derivatives of the underlying security (AIZ) in the form of stock options.

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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Institutional Put/Call Ratios
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In addition to reporting standard equity and debt issues, institutions with more than 100MM assets under management must also disclose their put and call option holdings. Since put options generally indicate negative sentiment, and call options indicate positive sentiment, we can get a sense of the overall institutional sentiment by plotting the ratio of puts to calls. The chart to the right plots the historical put/call ratio for this instrument.

Using Put/Call Ratio as an indicator of investor sentiment overcomes one of the key deficiencies of using total institutional ownership, which is that a significant amount of assets under management are invested passively to track indices. Passively-managed funds do not typically buy options, so the put/call ratio indicator more closely tracks the sentiment of actively-managed funds.

AIZ / Assurant, Inc. Historical Put/Call Ratio
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)
2026-02-13 2025-12-31 13F ASSURANT COM 04621X108 61,808 11,409 22.64 14,886 36.37 0.0147
2025-11-13 2025-09-30 13F ASSURANT COM 04621X108 50,399 8,300 19.72 10,917 31.31 0.0117
2025-08-14 2025-06-30 13F ASSURANT COM 04621X108 42,099 770 1.86 8,314 -4.11 0.0096
2025-05-14 2025-03-31 13F/A-1 ASSURANT COM 04621X108 41,329 1,468 3.68 8,669 2.00 0.0112
2025-05-13 2025-03-31 13F ASSURANT COM 04621X108 40,271 410 8,573 0.0093
2025-02-11 2024-12-31 13F ASSURANT COM 04621X108 39,861 -3,083 -7.18 8,499 -0.48 0.0109
2024-11-12 2024-09-30 13F ASSURANT COM 04621X108 42,944 18,192 73.50 8,540 107.53 0.0111
2024-08-13 2024-06-30 13F ASSURANT COM 04621X108 24,752 468 1.93 4,115 -9.98 0.0058
2024-05-07 2024-03-31 13F ASSURANT COM 04621X108 24,284 9,346 62.57 4,571 81.68 0.0067
2024-02-14 2023-12-31 13F ASSURANT COM 04621X108 14,938 -2,369 -13.69 2,517 1.25 0.0040
2023-11-14 2023-09-30 13F ASSURANT COM 04621X108 17,307 1,336 8.37 2,485 23.82 0.0045
2023-08-11 2023-06-30 13F ASSURANT COM 04621X108 15,971 -343 -2.10 2,008 2.50 0.0035
2023-05-12 2023-03-31 13F ASSURANT COM 04621X108 16,314 -5,161 -24.03 1,959 -27.08 0.0036
2023-02-10 2022-12-31 13F ASSURANT COM 04621X108 21,475 -10,913 -33.69 2,686 -42.92 0.0060
2022-11-14 2022-09-30 13F ASSURANT COM 04621X108 32,388 2,254 7.48 4,704 -9.73 0.0105
2022-08-15 2022-06-30 13F ASSURANT COM 04621X108 30,134 -4,042 -11.83 5,211 -16.13 0.0113
2022-05-13 2022-03-31 13F ASSURANT COM 04621X108 34,176 -8,401 -19.73 6,213 -6.39 0.0125
2022-02-14 2021-12-31 13F ASSURANT COM 04621X108 42,577 16,232 61.61 6,637 59.70 0.0125
2021-11-12 2021-09-30 13F ASSURANT COM 04621X108 26,345 -7,358 -21.83 4,156 -20.66 0.0087
2021-08-06 2021-06-30 13F ASSURANT COM 04621X108 33,703 7,034 26.38 5,238 38.53 0.0116
2021-05-12 2021-03-31 13F ASSURANT COM 04621X108 26,669 263 1.00 3,781 5.12 0.0095
2021-02-08 2020-12-31 13F ASSURANT COM 04621X108 26,406 -3,142 -10.63 3,597 0.36 0.0093
2020-12-04 2020-09-30 13F/A-1 ASSURANT COM 04621X108 29,548 -13,707 -31.69 3,584 -19.79 0.0104
2020-11-06 2020-09-30 13F ASSURANT COM 04621X108 31,788 -11,467 3,856 9,284.3907
2020-08-17 2020-06-30 13F/A-1 ASSURANT COM 04621X108 43,255 -6,077 -12.32 4,468 -13.38 0.0139
2020-08-11 2020-06-30 13F ASSURANT COM 04621X108 40,552 -8,780 5,255 14,254.4672
2020-05-14 2020-03-31 13F ASSURANT COM 04621X108 49,332 4,134 9.15 5,158 -14.40 0.0189
2020-02-06 2019-12-31 13F ASSURANT COM 04621X108 45,198 17,400 62.59 6,026 72.32 0.0180
2019-11-12 2019-09-30 13F ASSURANT COM 04621X108 27,798 5,151 22.74 3,497 45.16 0.0089
2019-08-14 2019-06-30 13F ASSURANT COM 04621X108 22,647 6,433 39.68 2,409 56.53 0.0079
2019-05-15 2019-03-31 13F ASSURANT COM 04621X108 16,214 -16,789 -50.87 1,539 -53.52 0.0052
2019-02-13 2018-12-31 13F ASSURANT COM 04621X108 33,003 -7,642 -18.80 3,311 -25.16 0.0118
2018-11-08 2018-09-30 13F ASSURANT COM 04621X108 40,645 -351 -0.86 4,424 4.29 0.0160
2018-08-03 2018-06-30 13F ASSURANT COM 04621X108 40,996 3,597 9.62 4,242 24.07 0.0144
2018-05-11 2018-03-31 13F ASSURANT COM 04621X108 37,399 -29,965 -44.48 3,419 -49.68 0.0131
2018-02-08 2017-12-31 13F ASSURANT COM 04621X108 67,364 -1,897 -2.74 6,794 2.69 0.0236
2017-11-06 2017-09-30 13F ASSURANT COM 04621X108 69,261 5,987 9.46 6,616 0.84 0.0235
2017-07-31 2017-06-30 13F ASSURANT COM 04621X108 63,274 6,202 10.87 6,561 20.16 0.0262
2017-05-05 2017-03-31 13F ASSURANT COM 04621X108 57,072 -2,294 -3.86 5,460 -0.96 0.0239
2017-02-02 2016-12-31 13F ASSURANT COM 04621X108 59,366 -12,021 -16.84 5,513 -16.29 0.0267
2016-11-04 2016-09-30 13F ASSURANT COM 04621X108 71,387 2,431 3.53 6,586 10.63 0.0335
2016-08-11 2016-06-30 13F ASSURANT COM 04621X108 68,956 589 0.86 5,953 12.87 0.0357
2016-05-10 2016-03-31 13F/A-1 ASSURANT COM 04621X108 68,367 23,026 50.78 5,274 44.37 0.0328
2016-02-03 2015-12-31 13F ASSURANT COM 04621X108 45,341 42,029 1,268.99 3,653 1,294.27 0.0223
2015-11-02 2015-09-30 13F/A-1 ASSURANT COM 04621X108 3,312 81 2.51 262 20.74 0.0024
2015-10-30 2015-09-30 13F ASSURANT COM 04621X108 3,312 263
2015-08-07 2015-06-30 13F/A-1 ASSURANT COM 04621X108 3,231 -2,774 -46.19 217 -40.87 0.0020
2015-08-04 2015-06-30 13F ASSURANT COM 04621X108 3,231 -2,774 217 0.0020
2015-05-14 2015-03-31 13F/A-1 ASSURANT COM 04621X108 6,005 -2,909 -32.63 367 -40.33 0.0032
2015-05-01 2015-03-31 13F ASSOCIATED ESTATES RLTY PUT 04621X108 6,005 6,005 367 0.0032
2015-02-10 2014-12-31 13F ASSURANT COM 04621X108 8,914 8,914 615 0.0054
Disclosed Put Options
File
Date
Effective
Date
Form Security Class ID Opt Avg Share Price Shares ΔShares
(%)
Value
(x1000)
ΔValue
(%)
Prior Allocation
(%)
Allocation
(%)
ΔAllocation
(%)
Cost Basis
(x1000)
Profit
(x1000)
Return
(%)
2015-05-01 2015-03-31 13F ASSOCIATED ESTATES RLTY PUT 6,005 367 n/a n/a n/a
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.