Simon Property Group, Inc.
AT ˙ WBAG ˙ US8288061091
177,00 € ↑1,10 (0,63%)
2026-06-04
DEL PRIS
SecurityAT:SPGR / Simon Property Group, Inc.
InstitutionAsset Management One Co., Ltd.
Latest Disclosed Ownership600,575 shares
Latest Disclosed Value $ 112,025,255
Asset Management One Co., Ltd. reports 1.52% decrease in ownership of SPGR / Simon Property Group, Inc.

On May 8, 2026 - Asset Management One Co., Ltd. filed a 13F-HR form disclosing ownership of 600,575 shares of Simon Property Group, Inc. (AT:SPGR) valued at $95,971,885 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 27, 2026 disclosing 609,861 shares of Simon Property Group, Inc.. This represents a change in shares of -1.52% during the quarter. The current value of the position is $106,301,775 USD.

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 SIMON PPTY GROUP INC COM 828806109 600,575 -9,286 -1.52 112,025 -2.09 0.3304
2026-01-27 2025-12-31 13F SIMON PPTY GROUP INC COM 828806109 609,861 -10,536 -1.70 114,419 -1.73 0.3181
2025-10-22 2025-09-30 13F SIMON PPTY GROUP INC COM 828806109 620,397 26,343 4.43 116,430 21.92 0.3373
2025-07-31 2025-06-30 13F SIMON PPTY GROUP INC COM 828806109 594,054 -7,517 -1.25 95,500 -4.41 0.2994
2025-04-23 2025-03-31 13F SIMON PPTY GROUP INC COM 828806109 601,571 13,638 2.32 99,909 -1.21 0.3455
2025-01-30 2024-12-31 13F SIMON PPTY GROUP INC COM 828806109 587,933 3,990 0.68 101,130 2.46 0.3475
2024-10-30 2024-09-30 13F SIMON PPTY GROUP INC COM 828806109 583,943 -25,411 -4.17 98,698 6.70 0.3512
2024-07-18 2024-06-30 13F SIMON PPTY GROUP INC COM 828806109 609,354 -16,720 -2.67 92,500 -5.59 0.3539
2024-05-02 2024-03-31 13F SIMON PPTY GROUP INC COM 828806109 626,074 -18,551 -2.88 97,974 5.34 0.3776
2024-01-24 2023-12-31 13F SIMON PPTY GROUP INC COM 828806109 644,625 -10,176 -1.55 93,006 31.48 0.3744
2023-10-19 2023-09-30 13F SIMON PPTY GROUP INC COM 828806109 654,801 -28,191 -4.13 70,738 -10.31 0.3149
2023-07-31 2023-06-30 13F SIMON PPTY GROUP INC COM 828806109 682,992 20,199 3.05 78,872 6.28 0.3338
2023-04-25 2023-03-31 13F SIMON PPTY GROUP INC COM 828806109 662,793 -17,052 -2.51 74,213 -6.96 0.3364
2023-02-06 2022-12-31 13F SIMON PPTY GROUP INC COM 828806109 679,845 22,236 3.38 79,760 35.14 0.3887
2022-11-04 2022-09-30 13F SIMON PPTY GROUP INC COM 828806109 657,609 -24,025 -3.52 59,020 -8.78 0.3003
2022-07-29 2022-06-30 13F SIMON PPTY GROUP INC COM 828806109 681,634 15,452 2.32 64,700 -26.18 0.3038
2022-05-13 2022-03-31 13F SIMON PPTY GROUP INC COM 828806109 666,182 -46,129 -6.48 87,646 -22.50 0.3422
2022-02-09 2021-12-31 13F SIMON PPTY GROUP INC COM 828806109 712,311 17,675 2.54 113,091 25.27 0.3940
2021-11-02 2021-09-30 13F SIMON PPTY GROUP INC COM 828806109 694,636 -50,908 -6.83 90,281 -7.19 0.3461
2021-08-03 2021-06-30 13F SIMON PPTY GROUP INC COM 828806109 745,544 -22,436 -2.92 97,278 11.34 0.3620
2021-05-14 2021-03-31 13F SIMON PPTY GROUP INC COM 828806109 767,980 -11,667 -1.50 87,373 34.53 0.3470
2021-02-12 2020-12-31 13F SIMON PPTY GROUP INC COM 828806109 779,647 59,750 8.30 64,946 39.47 0.2675
2020-11-13 2020-09-30 13F SIMON PPTY GROUP INC COM 828806109 719,897 1,628 0.23 46,565 -5.19 0.2140
2020-08-14 2020-06-30 13F SIMON PPTY GROUP INC COM 828806109 718,269 46,334 6.90 49,112 33.22 0.2415
2020-05-14 2020-03-31 13F SIMON PPTY GROUP INC COM 828806109 671,935 -109,075 -13.97 36,866 -68.31 0.2153
2020-02-14 2019-12-31 13F SIMON PPTY GROUP INC COM 828806109 781,010 -7,714 -0.98 116,339 -5.24 0.5244
2019-11-14 2019-09-30 13F SIMON PPTY GROUP INC COM 828806109 788,724 13,088 1.69 122,766 -0.93 0.5914
2019-08-14 2019-06-30 13F SIMON PPTY GROUP INC COM 828806109 775,636 10,726 1.40 123,916 -11.09 0.6086
2019-05-15 2019-03-31 13F SIMON PPTY GROUP INC COM 828806109 764,910 -351,167 -31.46 139,374 -25.52 0.7537
2019-02-13 2018-12-31 13F SIMON PPTY GROUP INC COM 828806109 1,116,077 -43,071 -3.72 187,122 -8.33 0.4460
2018-11-14 2018-09-30 13F SIMON PPTY GROUP INC COM 828806109 1,159,148 7,677 0.67 204,134 3.85 0.4190
2018-08-14 2018-06-30 13F SIMON PPTY GROUP INC COM 828806109 1,151,471 -4,835 -0.42 196,565 10.14 0.4296
2018-05-14 2018-03-31 13F SIMON PPTY GROUP INC COM 828806109 1,156,306 -10,342 -0.89 178,476 -10.76 0.4019
2018-02-14 2017-12-31 13F SIMON PPTY GROUP INC COM 828806109 1,166,648 -21,554 -1.81 200,005 4.35 0.4413
2017-11-14 2017-09-30 13F SIMON PPTY GROUP INC COM 828806109 1,188,202 -13,019 -1.08 191,667 -1.62 0.4499
2017-08-14 2017-06-30 13F SIMON PPTY GROUP INC COM 828806109 1,201,221 -17,224 -1.41 194,821 -6.49 0.4973
2017-05-11 2017-03-31 13F SIMON PROPERTY GROUP COM 828806109 1,218,445 -60,375 -4.72 208,338 -7.84 0.5470
2017-05-02 2016-12-31 13F/A-1 SIMON PROPERTY GROUP COM 828806109 1,278,820 431,790 50.98 226,073 28.58 0.5778
2017-02-13 2016-12-31 13F SIMON PROPERTY GROUP COM 828806109 1,278,820 226,073
2016-11-07 2016-09-30 13F SIMON PROPERTY GROUP Com 828806109 847,030 2,778 0.33 175,824 -3.11 2.6118
2016-08-03 2016-06-30 13F SIMON PROPERTY GROUP Com 828806109 844,252 -11,088 -1.30 181,470 3.11 2.7228
2016-05-05 2016-03-31 13F SIMON PROPERTY GROUP Com 828806109 855,340 3,576 0.42 175,996 5.55 2.5690
2016-01-28 2015-12-31 13F SIMON PROPERTY GROUP Com 828806109 851,764 -16,441 -1.89 166,749 5.27 2.4889
2015-11-12 2015-09-30 13F SIMON PROPERTY GROUP Com 828806109 868,205 -58,042 -6.27 158,403 -0.01 2.4107
2015-08-06 2015-06-30 13F SIMON PROPERTY GROUP Com 828806109 926,247 -66,275 -6.68 158,412 -18.96 2.1950
2015-05-11 2015-03-31 13F SIMON PROPERTY GROUP Com 828806109 992,522 -59,680 -5.67 195,476 -0.35 2.4135
2015-02-09 2014-12-31 13F SIMON PROPERTY GROUP Com 828806109 1,052,202 -113,241 -9.72 196,171 2.37 2.5458
2014-11-05 2014-09-30 13F SIMON PROPERTY GROUP Com 828806109 1,165,443 -33,611 -2.80 191,622 -4.33 2.6460
2014-08-12 2014-06-30 13F SIMON PROPERTY GROUP Com 828806109 1,199,054 -59,980 -4.76 200,300 -2.91 2.9898
2014-05-05 2014-03-31 13F SIMON PROPERTY GROUP Com 828806109 1,259,034 -65,818 -4.97 206,307 1.64 3.2512
2014-02-05 2013-12-31 13F/A-1 SIMON PROPERTY GROUP COM 828806109 1,324,852 -146,976 -9.99 202,975 -8.11 3.1457
2014-01-29 2013-12-31 13F SIMON PROPERTY GROUP COM 828806109 1,324,852 202,975
2014-02-05 2013-09-30 13F/A-1 SIMON PROPERTY GROUP COM 828806109 1,471,828 -49,603 -3.26 220,890 -9.63 3.3241
2013-11-06 2013-09-30 13F SIMON PROPERTY GROUP Com 828806109 1,471,828 220,890
2014-02-12 2013-06-30 13F/A-1 SIMON PROPERTY GROUP COM 828806109 1,521,431 1,521,431 244,426 3.9691
2013-08-05 2013-06-30 13F SIMON PROPERTY GROUP Com 828806109 1,521,431 244,426
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.