State Street Corporation
MX ˙ BMV ˙ US8574771031
SecurityMX:STT / State Street Corporation
InstitutionKidder Stephen W
Latest Disclosed Ownership2,525 shares
Latest Disclosed Value $ 319,564
Kidder Stephen W reports 10.62% decrease in ownership of STT / State Street Corporation

On May 8, 2026 - Kidder Stephen W filed a 13F-HR form disclosing ownership of 2,525 shares of State Street Corporation (MX:STT) valued at $319,564 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 14, 2026 disclosing 2,825 shares of State Street Corporation. This represents a change in shares of -10.62% 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 STATE STREET COM 857477103 2,525 -300 -10.62 320 -12.36 0.0201
2026-02-14 2025-12-31 13F STATE STREET COM 857477103 2,825 0 0.00 364 11.31 0.1028
2025-11-10 2025-09-30 13F STATE STREET COM 857477103 2,825 0 0.00 328 9.00 0.0939
2025-07-23 2025-06-30 13F STATE STREET COM 857477103 2,825 -75 -2.59 300 15.83 0.0903
2025-05-06 2025-03-31 13F STATE STREET COM 857477103 2,900 0 0.00 260 -8.80 0.0809
2025-02-13 2024-12-31 13F STATE STREET COM 857477103 2,900 -50 -1.69 285 9.23 0.0857
2024-11-12 2024-09-30 13F STATE STREET COM 857477103 2,950 0 0.00 261 19.27 0.0771
2024-08-12 2024-06-30 13F STATE STREET COM 857477103 2,950 -600 -16.90 218 -20.44 0.0682
2024-05-14 2024-03-31 13F STATE STREET COM 857477103 3,550 -125 -3.40 274 -3.52 0.0876
2024-02-14 2023-12-31 13F STATE STREET COM 857477103 3,675 -150 -3.92 285 10.94 0.0918
2023-11-14 2023-09-30 13F STATE STREET COM 857477103 3,825 0 0.00 256 -8.24 0.0889
2023-08-11 2023-06-30 13F STATE STREET COM 857477103 3,825 1,000 35.40 280 30.99 0.0916
2023-05-11 2023-03-31 13F STATE STREET COM 857477103 2,825 -50 -1.74 214 -4.48 0.0744
2023-02-09 2022-12-31 13F STATE STREET COM 857477103 2,875 2,875 223 0.0817
2022-11-08 2022-09-30 13F STATE STREET COM 857477103 0 -3,875 -100.00 0 -100.00
2022-07-19 2022-06-30 13F STATE STREET COM 857477103 3,875 -50 -1.27 238 -30.41 0.0921
2022-05-17 2022-03-31 13F STATE STREET COM 857477103 3,925 950 31.93 342 23.91 0.1105
2022-02-08 2021-12-31 13F STATE STREET COM 857477103 2,975 -625 -17.36 276 -9.51 0.0838
2021-11-10 2021-09-30 13F STATE STREET COM 857477103 3,600 0 0.00 305 3.04 0.0957
2021-08-09 2021-06-30 13F STATE STREET COM 857477103 3,600 1,050 41.18 296 38.32 0.0913
2021-05-17 2021-03-31 13F STATE STREET COM 857477103 2,550 2,550 214 0.0691
2020-05-07 2020-03-31 13F STATE STREET COM 857477103 0 -3,740 -100.00 0 -100.00
2020-01-15 2019-12-31 13F STATE STREET COM 857477103 3,740 -350 -8.56 297 22.22 0.1093
2019-11-07 2019-09-30 13F STATE STREET COM 857477103 4,090 325 8.63 243 15.71 0.0957
2019-07-24 2019-06-30 13F STATE STREET COM 857477103 3,765 -725 -16.15 210 -28.81 0.0841
2019-05-01 2019-03-31 13F STATE STREET COM 857477103 4,490 0 0.00 295 4.61 0.1198
2019-01-24 2018-12-31 13F STATE STREET COM 857477103 4,490 0 0.00 282 -25.00 0.1243
2018-10-15 2018-09-30 13F STATE STREET COM 857477103 4,490 -1,310 -22.59 376 -30.24 0.1373
2018-07-30 2018-06-30 13F STATE STREET COM 857477103 5,800 -270 -4.45 539 -10.91 0.2068
2018-04-24 2018-03-31 13F STATE STREET COM 857477103 6,070 -180 -2.88 605 -0.66 0.2310
2018-02-02 2017-12-31 13F STATE STREET COM 857477103 6,250 -2,059 -24.78 609 -23.30 0.2183
2017-10-26 2017-09-30 13F STATE STREET COM 857477103 8,309 -1,345 -13.93 794 -8.42 0.2926
2017-07-26 2017-06-30 13F STATE STREET COM 857477103 9,654 -1,860 -16.15 867 -5.35 0.3284
2017-05-15 2017-03-31 13F STATE STREET COM 857477103 11,514 -2,025 -14.96 916 -12.93 0.3524
2017-02-14 2016-12-31 13F STATE STREET Common Stock 857477103 13,539 -25 -0.18 1,052 11.32 0.4262
2016-11-15 2016-09-30 13F STATE STREET Common Stock 857477103 13,564 -2,535 -15.75 945 8.87 0.3757
2016-08-08 2016-06-30 13F STATE STREET Common Stock 857477103 16,099 -2,260 -12.31 868 -19.18 0.3456
2016-05-27 2016-03-31 13F STATE STREET Common Stock 857477103 18,359 -2,130 -10.40 1,074 -21.03 0.4357
2016-02-12 2015-12-31 13F STATE STREET Common Stock 857477103 20,489 5,500 36.69 1,360 35.05 0.5815
2015-11-13 2015-09-30 13F STATE STREET Common Stock 857477103 14,989 -700 -4.46 1,007 -16.64 0.5045
2015-08-10 2015-06-30 13F STATE STREET Common Stock 857477103 15,689 -100 -0.63 1,208 4.05 0.5453
2015-05-22 2015-03-31 13F STATE STREET Common Stock 857477103 15,789 -405 -2.50 1,161 -8.58 0.5023
2015-02-13 2014-12-31 13F STATE STREET Common Stock 857477103 16,194 0 0.00 1,270 6.54 0.5506
2014-11-24 2014-09-30 13F STATE STREET Common Stock 857477103 16,194 7,935 96.08 1,192 114.77 0.5417
2014-07-24 2014-06-30 13F STATE STREET Common Stock 857477103 8,259 0 0.00 555 -3.31 0.3687
2014-05-30 2014-03-31 13F STATE STREET Common Stock 857477103 8,259 -100 -1.20 574 -6.51 0.3863
2014-05-29 2013-12-31 13F STATE STREET Common Stock 857477103 8,359 0 0.00 614 11.84 0.4223
2013-11-18 2013-09-30 13F STATE STREET Common Stock 857477103 8,359 0 0.00 549 0.73 0.4238
2013-08-19 2013-06-30 13F STATE STREET Common Stock 857477103 8,359 -325 -3.74 545 33.25 0.4389
2013-08-16 2012-12-31 13F STATE STREET Common Stock 857477103 8,684 8,684 409 0.3591
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.