State Street Corporation
MX ˙ BMV ˙ US8574771031
SecurityMX:STT / State Street Corporation
InstitutionSei Investments Co
Latest Disclosed Ownership600,691 shares
Latest Disclosed Value $ 77,495,845
Sei Investments Co reports 38.25% increase in ownership of STT / State Street Corporation

On February 13, 2026 - Sei Investments Co filed a 13F-HR form disclosing ownership of 600,691 shares of State Street Corporation (MX:STT) valued at $77,495,845 USD as of December 31, 2025. The entity filed a previous 13F-HR on November 13, 2025 disclosing 434,482 shares of State Street Corporation. This represents a change in shares of 38.25% 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.

Upgrade to unlock premium data and export to Excel .

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 STATE STR COM 857477103 600,691 166,209 38.25 77,496 53.75 0.0765
2025-11-13 2025-09-30 13F STATE STR COM 857477103 434,482 -8,442 -1.91 50,403 7.01 0.0542
2025-08-14 2025-06-30 13F STATE STR COM 857477103 442,924 15,335 3.59 47,102 23.04 0.0546
2025-05-14 2025-03-31 13F/A-1 STATE STR COM 857477103 427,589 -7,718 -1.77 38,280 -10.40 0.0493
2025-05-13 2025-03-31 13F STATE STR COM 857477103 438,602 3,295 42,016 0.0457
2025-02-11 2024-12-31 13F STATE STR COM 857477103 435,307 -49,102 -10.14 42,724 -0.31 0.0549
2024-11-12 2024-09-30 13F STATE STR COM 857477103 484,409 -15,829 -3.16 42,856 15.77 0.0557
2024-08-13 2024-06-30 13F STATE STR COM 857477103 500,238 63,438 14.52 37,017 9.61 0.0524
2024-05-07 2024-03-31 13F STATE STR COM 857477103 436,800 5,668 1.31 33,773 1.13 0.0495
2024-02-14 2023-12-31 13F STATE STR COM 857477103 431,132 8,249 1.95 33,395 17.93 0.0536
2023-11-14 2023-09-30 13F STATE STR COM 857477103 422,883 -5,850 -1.36 28,316 -9.75 0.0509
2023-08-11 2023-06-30 13F STATE STR COM 857477103 428,733 113,343 35.94 31,374 31.42 0.0547
2023-05-12 2023-03-31 13F STATE STR COM 857477103 315,390 21,397 7.28 23,873 4.69 0.0443
2023-02-10 2022-12-31 13F STATE STR COM 857477103 293,993 12,253 4.35 22,805 33.10 0.0507
2022-11-14 2022-09-30 13F STATE STR COM 857477103 281,740 -35,643 -11.23 17,133 -12.36 0.0382
2022-08-15 2022-06-30 13F STATE STR COM 857477103 317,383 37,030 13.21 19,550 -20.00 0.0422
2022-05-13 2022-03-31 13F STATE STR COM 857477103 280,353 10,187 3.77 24,436 -2.71 0.0491
2022-02-14 2021-12-31 13F STATE STR COM 857477103 270,166 -136,375 -33.55 25,117 -27.04 0.0471
2021-11-12 2021-09-30 13F STATE STR COM 857477103 406,541 10,393 2.62 34,425 5.71 0.0722
2021-08-06 2021-06-30 13F STATE STR COM 857477103 396,148 79,237 25.00 32,566 27.42 0.0722
2021-05-12 2021-03-31 13F STATE STR COM 857477103 316,911 -8,814 -2.71 25,559 7.68 0.0644
2021-02-08 2020-12-31 13F STATE STR COM 857477103 325,725 5,083 1.59 23,735 24.91 0.0614
2020-12-04 2020-09-30 13F/A-1 STATE STR COM 857477103 320,642 20,514 6.84 19,002 -0.71 0.0550
2020-11-06 2020-09-30 13F STATE STR COM 857477103 326,669 26,541 19,360 46,614.5755
2020-08-17 2020-06-30 13F/A-1 STATE STR COM 857477103 300,128 -608 -0.20 19,137 19.81 0.0594
2020-08-11 2020-06-30 13F STATE STR COM 857477103 240,392 -60,344 17,661 47,906.4026
2020-05-14 2020-03-31 13F STATE STR COM 857477103 300,736 97,422 47.92 15,973 -0.84 0.0587
2020-02-06 2019-12-31 13F STATE STR COM 857477103 203,314 -215,370 -51.44 16,109 -34.96 0.0481
2019-11-12 2019-09-30 13F STATE STR COM 857477103 418,684 305,472 269.82 24,768 288.94 0.0634
2019-08-14 2019-06-30 13F STATE STR COM 857477103 113,212 -20,310 -15.21 6,368 -27.83 0.0208
2019-05-15 2019-03-31 13F STATE STR COM 857477103 133,522 -101,998 -43.31 8,823 -53.56 0.0296
2019-02-13 2018-12-31 13F STATE STR COM 857477103 235,520 10,852 4.83 19,000 0.52 0.0676
2018-11-08 2018-09-30 13F STATE STR COM 857477103 224,668 -882,762 -79.71 18,902 -81.66 0.0685
2018-08-03 2018-06-30 13F STATE STR COM 857477103 1,107,430 65,761 6.31 103,090 -0.77 0.3504
2018-05-11 2018-03-31 13F STATE STR COM 857477103 1,041,669 98,858 10.49 103,887 12.89 0.3982
2018-02-08 2017-12-31 13F STATE STR COM 857477103 942,811 72,330 8.31 92,028 10.65 0.3196
2017-11-06 2017-09-30 13F STATE STR COM 857477103 870,481 252,106 40.77 83,167 49.88 0.2956
2017-07-31 2017-06-30 13F STATE STR COM 857477103 618,375 105,584 20.59 55,488 35.92 0.2212
2017-05-05 2017-03-31 13F STATE STR COM 857477103 512,791 81,732 18.96 40,824 21.85 0.1789
2017-02-02 2016-12-31 13F STATE STR COM 857477103 431,059 387,725 894.74 33,503 1,010.47 0.1622
2016-11-04 2016-09-30 13F STATE STR COM 857477103 43,334 4,624 11.95 3,017 44.56 0.0153
2016-08-11 2016-06-30 13F STATE STR COM 857477103 38,710 5,687 17.22 2,087 7.97 0.0125
2016-05-10 2016-03-31 13F/A-1 STATE STR COM 857477103 33,023 -1,021 -3.00 1,933 -14.47 0.0120
2016-02-03 2015-12-31 13F STATE STR COM 857477103 34,044 12,177 55.69 2,260 53.74 0.0138
2015-11-02 2015-09-30 13F/A-1 STATE STR COM 857477103 21,867 3,335 18.00 1,470 2.94 0.0135
2015-10-30 2015-09-30 13F STATE STR COM 857477103 21,867 1,471
2015-08-07 2015-06-30 13F/A-1 STATE STR COM 857477103 18,532 1,137 6.54 1,428 11.48 0.0129
2015-08-04 2015-06-30 13F STATE STR COM 857477103 18,532 1,137 1,428 0.0129
2015-05-14 2015-03-31 13F/A-1 STATE STR COM 857477103 17,395 -6,483 -27.15 1,281 -31.46 0.0111
2015-05-01 2015-03-31 13F STATE NATL COS COM 857477103 17,395 1,281
2015-02-10 2014-12-31 13F STATE STR COM 857477103 23,878 23,878 1,869 0.0165
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.