Simon Property Group, Inc.
MX ˙ BMV ˙ US8288061091
SecurityMX:SPG / Simon Property Group, Inc.
InstitutionCostello Asset Management, INC
Latest Disclosed Ownership17 shares
Latest Disclosed Value $ 3,171
Costello Asset Management, INC ownership in SPG / Simon Property Group, Inc.

On April 30, 2026 - Costello Asset Management, INC filed a 13F-HR form disclosing ownership of 17 shares of Simon Property Group, Inc. (MX:SPG) valued at $3,171 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 3, 2026 disclosing 17 shares of Simon Property Group, Inc.. This represents a change in shares of 0.00% 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)
2026-04-30 2026-03-31 13F SIMON PPTY GROUP INC COM 828806109 17 0 0.00 3 0.00 0.0011
2026-02-03 2025-12-31 13F SIMON PPTY GROUP INC COM 828806109 17 0 0.00 3 0.00 0.0010
2025-11-06 2025-09-30 13F SIMON PPTY GROUP INC OM 828806109 17 -79 -82.29 3 -80.00 0.0011
2025-07-24 2025-06-30 13F SIMON PPTY GROUP INC COM 828806109 96 9 10.34 15 7.14 0.0058
2025-05-09 2025-03-31 13F SIMON PPTY GROUP INC COM 828806109 87 24 38.10 14 40.00 0.0059
2025-01-24 2024-12-31 13F SIMON PPTY GROUP INC NEWREIT COM 828806109 63 3 5.00 11 0.00 0.0072
2024-11-01 2024-09-30 13F SIMON PPTY GROUP INC COM 828806109 60 -2 -3.23 10 11.11 0.0068
2024-08-01 2024-06-30 13F SIMON PPTY GROUP INC COM 828806109 62 2 3.33 9 0.00 0.0070
2024-04-24 2024-03-31 13F SIMON PPTY GROUP INC COM 828806109 60 9 17.65 9 28.57 0.0067
2024-01-29 2023-12-31 13F SIMON PPTY GROUP INC COM 828806109 51 1 2.00 7 40.00 0.0060
2023-11-08 2023-09-30 13F SIMON PPTY GROUP INC COM 828806109 50 5 11.11 5 0.00 0.0050
2023-07-28 2023-06-30 13F SIMON PPTY GROUP INC COM 828806109 45 3 7.14 5 25.00 0.0045
2023-05-05 2023-03-31 13F SIMON PPTY GROUP INC COM 828806109 42 2 5.00 5 0.00 0.0048
2023-02-02 2022-12-31 13F SIMON PPTY GROUP INC COM 828806109 40 0 0.00 5 0.00 0.0042
2022-11-03 2022-09-30 13F SIMON PPTY GROUP INC COM 828806109 40 0 0.00 4 0.00 0.0038
2022-07-22 2022-06-30 13F SIMON PPTY GROUP INC COM 828806109 40 -468 -92.13 4 -94.03 0.0035
2022-04-26 2022-03-31 13F SIMON PPTY GROUP INC COM 828806109 508 1 0.20 67 -17.28 0.0460
2022-01-28 2021-12-31 13F SIMON PPTY GROUP INC COM 828806109 507 4 0.80 81 24.62 0.0495
2021-10-29 2021-09-30 13F SIMON PPTY GROUP INC COM 828806109 503 26 5.45 65 4.84 0.0416
2021-08-05 2021-06-30 13F/A-1 SIMON PPTY GROUP INC COM 828806109 477 0 0.00 62 14.81 0.0406
2021-08-05 2021-06-30 13F SIMON PPTY GROUP INC COM 828806109 477 0 54 0.0373
2021-05-03 2021-03-31 13F SIMON PPTY GROUP INC COM 828806109 477 -400 -45.61 54 -28.00 0.0373
2021-02-05 2020-12-31 13F SIMON PPTY GROUP INC COM 828806109 877 0 0.00 75 31.58 0.0567
2020-11-04 2020-09-30 13F SIMON PPTY GROUP INC COM 828806109 877 0 0.00 57 -5.00 0.0502
2020-07-28 2020-06-30 13F SIMON PPTY GROUP INC COM 828806109 877 877 60 0.0590
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.