Simon Property Group, Inc.
MX ˙ BMV ˙ US8288061091
SecurityMX:SPG / Simon Property Group, Inc.
InstitutionNorthern Trust Corp
Latest Disclosed Ownership5,002,392 shares
Latest Disclosed Value $ 933,096,180
Northern Trust Corp reports 1.17% decrease in ownership of SPG / Simon Property Group, Inc.

On May 14, 2026 - Northern Trust Corp filed a 13F-HR form disclosing ownership of 5,002,392 shares of Simon Property Group, Inc. (MX:SPG) valued at $933,096,180 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 5,061,639 shares of Simon Property Group, Inc.. This represents a change in shares of -1.17% 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)
2026-05-14 2026-03-31 13F SIMON PPTY GROUP INC COM 828806109 5,002,392 -59,247 -1.17 933,096 -0.41 0.0253
2026-02-17 2025-12-31 13F SIMON PPTY GROUP INC COM 828806109 5,061,639 -282,531 -5.29 936,960 -6.58 0.0246
2025-11-14 2025-09-30 13F SIMON PPTY GROUP INC COM 828806109 5,344,170 82,550 1.57 1,002,940 18.57 0.1283
2025-08-13 2025-06-30 13F SIMON PPTY GROUP INC COM 828806109 5,261,620 -297,362 -5.35 845,858 -8.38 0.1163
2025-05-13 2025-03-31 13F SIMON PPTY GROUP INC COM 828806109 5,558,982 96,126 1.76 923,236 -1.86 0.1371
2025-02-14 2024-12-31 13F SIMON PPTY GROUP INC COM 828806109 5,462,856 1,718,398 45.89 940,758 48.65 0.1332
2024-11-13 2024-09-30 13F SIMON PPTY GROUP INC COM 828806109 3,744,458 -190,770 -4.85 632,888 5.95 0.1036
2024-08-14 2024-06-30 13F SIMON PPTY GROUP INC COM 828806109 3,935,228 53,623 1.38 597,368 -1.66 0.1007
2024-05-14 2024-03-31 13F SIMON PPTY GROUP INC COM 828806109 3,881,605 -99,113 -2.49 607,432 6.98 0.1050
2024-02-13 2023-12-31 13F SIMON PPTY GROUP INC COM 828806109 3,980,718 -764,480 -16.11 567,810 10.77 0.1028
2023-11-13 2023-09-30 13F SIMON PPTY GROUP INC COM 828806109 4,745,198 86,778 1.86 512,624 -4.71 0.0993
2023-08-11 2023-06-30 13F SIMON PPTY GROUP INC COM 828806109 4,658,420 -54,873 -1.16 537,954 1.93 0.1034
2023-05-15 2023-03-31 13F SIMON PPTY GROUP INC COM 828806109 4,713,293 183,518 4.05 527,747 -0.83 0.1046
2023-02-13 2022-12-31 13F SIMON PPTY GROUP INC COM 828806109 4,529,775 -187,240 -3.97 532,158 25.70 0.1117
2022-11-14 2022-09-30 13F SIMON PPTY GROUP INC COM 828806109 4,717,015 -48,000 -1.01 423,352 -6.40 0.0967
2022-08-12 2022-06-30 13F SIMON PPTY GROUP INC COM 828806109 4,765,015 -504,914 -9.58 452,295 -34.76 0.0969
2022-05-13 2022-03-31 13F SIMON PPTY GROUP INC COM 828806109 5,269,929 -77,165 -1.44 693,312 -18.85 0.1220
2022-02-08 2021-12-31 13F SIMON PPTY GROUP INC COM 828806109 5,347,094 -209,817 -3.78 854,306 18.29 0.1400
2021-11-15 2021-09-30 13F SIMON PPTY GROUP INC COM 828806109 5,556,911 53,214 0.97 722,232 0.57 0.1278
2021-08-13 2021-06-30 13F SIMON PPTY GROUP INC COM 828806109 5,503,697 -138,162 -2.45 718,121 11.88 0.1265
2021-05-12 2021-03-31 13F SIMON PPTY GROUP INC COM 828806109 5,641,859 -417,810 -6.89 641,874 24.21 0.1194
2021-02-11 2020-12-31 13F SIMON PPTY GROUP INC COM 828806109 6,059,669 172,383 2.93 516,768 35.71 0.1007
2020-11-16 2020-09-30 13F SIMON PPTY GROUP INC COM 828806109 5,887,286 115,935 2.01 380,790 -3.51 0.0835
2020-08-14 2020-06-30 13F SIMON PPTY GROUP INC COM 828806109 5,771,351 117,495 2.08 394,646 27.24 0.0935
2020-05-14 2020-03-31 13F SIMON PPTY GROUP INC COM 828806109 5,653,856 -174,120 -2.99 310,170 -64.27 0.0890
2020-02-14 2019-12-31 13F SIMON PPTY GROUP INC COM 828806109 5,827,976 -212,977 -3.53 868,136 -7.67 0.1943
2019-11-13 2019-09-30 13F SIMON PPTY GROUP INC COM 828806109 6,040,953 32,193 0.54 940,275 -2.05 0.2251
2019-08-13 2019-06-30 13F SIMON PPTY GROUP INC COM 828806109 6,008,760 64,654 1.09 959,960 -11.37 0.2277
2019-05-13 2019-03-31 13F SIMON PPTY GROUP INC COM 828806109 5,944,106 149,589 2.58 1,083,076 11.26 0.2675
2019-02-12 2018-12-31 13F SIMON PPTY GROUP INC COM 828806109 5,794,517 344,212 6.32 973,422 1.05 0.2730
2018-11-14 2018-09-30 13F SIMON PPTY GROUP INC COM 828806109 5,450,305 -122,562 -2.20 963,342 1.57 0.2358
2018-09-18 2018-06-30 13F/A-1 SIMON PPTY GROUP INC COM 828806109 5,572,867 -65,462 -1.16 948,446 8.98 0.2408
2018-08-14 2018-06-30 13F SIMON PPTY GROUP INC COM 828806109 5,597,929 -40,400 952,711
2018-05-09 2018-03-31 13F SIMON PPTY GROUP INC COM 828806109 5,638,329 334,685 6.31 870,277 -4.45 0.2264
2018-02-14 2017-12-31 13F SIMON PPTY GROUP INC COM 828806109 5,303,644 145,745 2.83 910,847 9.68 0.2307
2017-11-13 2017-09-30 13F SIMON PPTY GROUP INC COM 828806109 5,157,899 89,648 1.77 830,474 1.30 0.2164
2017-08-11 2017-06-30 13F SIMON PPTY GROUP INC COM 828806109 5,068,251 -9,037 -0.18 819,839 -6.14 0.2292
2017-05-12 2017-03-31 13F SIMON PPTY GROUP INC COM 828806109 5,077,288 80,750 1.62 873,445 -1.61 0.2519
2017-02-13 2016-12-31 13F SIMON PPTY GROUP INC COM 828806109 4,996,538 -332,752 -6.24 887,735 -19.53 0.2723
2016-11-09 2016-09-30 13F SIMON PPTY GROUP INC COM 828806109 5,329,290 64,200 1.22 1,103,216 -3.40 0.3436
2016-08-12 2016-06-30 13F SIMON PPTY GROUP INC COM 828806109 5,265,090 156,275 3.06 1,141,999 8.72 0.3707
2016-08-19 2016-03-31 13F/A-1 SIMON PPTY GROUP INC COM 828806109 5,108,815 51,348 1.02 1,050,405 6.82 0.3484
2016-05-13 2016-03-31 13F Simon Ppty Group REIT 828806109 5,108,815 1,061,050
2016-02-12 2015-12-31 13F Simon Ppty Group REIT 828806109 5,057,467 -306,029 -5.71 983,374 -0.20 0.3260
2015-11-12 2015-09-30 13F SIMON PPTY GROUP INC COM 828806109 5,363,496 5,363,496 0.00 985,382 0.3288
2015-08-13 2015-06-30 13F Simon Ppty Group REIT 828806109 0 -5,564,089 -100.00 0 -100.00
2015-05-14 2015-03-31 13F Simon Ppty Group REIT 828806109 5,564,089 170,203 3.16 1,088,559 10.82 0.3274
2015-02-12 2014-12-31 13F Simon Ppty Group REIT 828806109 5,393,886 334,046 6.60 982,281 18.07 0.2966
2014-11-13 2014-09-30 13F Simon Ppty Group REIT 828806109 5,059,840 50,458 1.01 831,939 -0.12 0.2613
2014-08-14 2014-06-30 13F SIMON PPTY GROUP INC com 828806109 5,009,382 -185,117 -3.56 832,960 -2.22 0.2596
2014-05-14 2014-03-31 13F SIMON PPTY GROUP INC REIT 828806109 5,194,499 23,292 0.45 851,897 8.27 0.2680
2014-02-21 2013-12-31 13F/A-1 SIMON PPTY GROUP INC COM 828806109 5,171,207 -317,525 -5.79 786,851 -3.29 0.2523
2014-02-12 2013-12-31 13F SIMON PPTY GROUP INC COM 828806109 5,171,207 786,851
2013-11-13 2013-09-30 13F SIMON PPTY GROUP INC COM 828806109 5,488,732 -288,915 -5.00 813,594 -10.83 0.2865
2013-08-09 2013-06-30 13F SIMON PPTY GROUP INC COM 828806109 5,777,647 5,777,647 912,406 0.3306
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.