Simon Property Group, Inc.
MX ˙ BMV ˙ US8288061091
SecurityMX:SPG / Simon Property Group, Inc.
InstitutionWinton Capital Group Ltd
Latest Disclosed Ownership2,800 shares
Latest Disclosed Value $ 522,284
Winton Capital Group Ltd ownership in SPG / Simon Property Group, Inc.

On May 12, 2026 - Winton Capital Group Ltd filed a 13F-HR form disclosing ownership of 2,800 shares of Simon Property Group, Inc. (MX:SPG) valued at $522,284 USD as of March 31, 2026. The entity filed a previous 13F-HR on August 14, 2023 disclosing 0 shares of Simon Property Group, Inc..

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 SIMON PPTY GROUP INC COM 828806109 2,800 2,800 522 0.0183
2023-08-14 2023-06-30 13F SIMON PPTY GROUP INC COM 828806109 0 -8,726 -100.00 0 -100.00
2023-05-12 2023-03-31 13F SIMON PPTY GROUP INC COM 828806109 8,726 8,726 977 0.0596
2022-02-10 2021-12-31 13F SIMON PPTY GROUP INC COM 828806109 0 -5,281 -100.00 0 -100.00
2021-10-28 2021-09-30 13F SIMON PPTY GROUP INC COM 828806109 5,281 3,216 155.74 686 155.02 0.0384
2021-08-10 2021-06-30 13F SIMON PPTY GROUP INC COM 828806109 2,065 -3,786 -64.71 269 -59.61 0.0144
2021-07-21 2021-03-31 13F SIMON PPTY GROUP INC COM 828806109 5,851 353 6.42 666 42.00 0.0380
2021-02-12 2020-12-31 13F SIMON PPTY GROUP INC COM 828806109 5,498 -23,775 -81.22 469 -75.22 0.0339
2020-10-30 2020-09-30 13F SIMON PPTY GROUP INC COM 828806109 29,273 29,273 1,893 0.0615
2020-08-05 2020-06-30 13F SIMON PPTY GROUP INC COM 828806109 0 -82,193 -100.00 0 -100.00
2020-05-11 2020-03-31 13F SIMON PPTY GROUP INC COM 828806109 82,193 -9,095 -9.96 4,509 -66.84 0.1190
2020-02-13 2019-12-31 13F SIMON PPTY GROUP INC COM 828806109 91,288 65,357 252.04 13,598 236.92 0.1908
2019-11-08 2019-09-30 13F SIMON PPTY GROUP INC COM 828806109 25,931 4,309 19.93 4,036 16.85 0.0477
2019-07-08 2019-06-30 13F SIMON PPTY GROUP INC COM 828806109 21,622 3,906 22.05 3,454 7.00 0.0671
2019-05-13 2019-03-31 13F SIMON PPTY GROUP INC COM 828806109 17,716 16,056 967.23 3,228 1,056.99 0.0649
2019-02-05 2018-12-31 13F SIMON PPTY GROUP INC COM 828806109 1,660 -1,133 -40.57 279 -43.52 0.0060
2018-11-02 2018-09-30 13F SIMON PPTY GROUP INC COM 828806109 2,793 -138 -4.71 494 -1.00 0.0103
2018-08-20 2018-06-30 13F SIMON PPTY GROUP INC COM 828806109 2,931 -309 -9.54 499 -0.20 0.0128
2018-05-21 2018-03-31 13F SIMON PPTY GROUP INC COM 828806109 3,240 810 33.33 500 19.90 0.0141
2018-02-13 2017-12-31 13F SIMON PPTY GROUP INC COM 828806109 2,430 -820 -25.23 417 -20.27 0.0121
2017-11-13 2017-09-30 13F SIMON PPTY GROUP INC COM 828806109 3,250 -846 -20.65 523 -21.12 0.0167
2017-08-17 2017-06-30 13F SIMON PPTY GROUP INC COM 828806109 4,096 -20,512 -83.36 663 -86.98 0.0195
2017-05-12 2017-03-31 13F SIMON PPTY GROUP INC COM 828806109 24,608 24,608 5,094 0.0875
2017-02-13 2016-12-31 13F SIMON PPTY GROUP INC COM 828806109 0 -24,608 -100.00 0 -100.00
2016-11-08 2016-09-30 13F SIMON PPTY GROUP INC COM 828806109 24,608 24,608 0.00 5,094 0.0875
2016-05-06 2016-03-31 13F SIMON PPTY GROUP INC COM 828806109 0 0 0 0.0000
2016-02-08 2015-12-31 13F SIMON PPTY GROUP INC COM 828806109 0 -76,058 -100.00 0 -100.00
2015-11-10 2015-09-30 13F SIMON PPTY GROUP INC COM 828806109 76,058 76,058 0.00 13,973 0.1105
2015-08-06 2015-06-30 13F SIMON PPTY GROUP INC COM 828806109 0 -9,444 -100.00 0 -100.00
2015-05-12 2015-03-31 13F SIMON PPTY GROUP INC COM 828806109 9,444 -18,835 -66.60 1,848 -64.12 0.0147
2015-03-16 2014-12-31 13F/A-1 SIMON PPTY GROUP INC COM 828806109 28,279 15,839 127.32 5,150 151.83 0.0638
2015-02-13 2014-12-31 13F SIMON PPTY GROUP INC COM 828806109 31,196 5,681
2014-10-28 2014-09-30 13F SIMON PPTY GROUP INC COM 828806109 12,440 12,440 2,045 0.0146
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.