American Assets Trust, Inc.
US ˙ NYSE ˙ US0240131047

SecurityAAT / American Assets Trust, Inc.
InstitutionDimensional Fund Advisors Lp
Latest Disclosed Ownership616,883 shares
Latest Disclosed Value $ 11,356,928
Dimensional Fund Advisors Lp reports 14.07% decrease in ownership of AAT / American Assets Trust, Inc.

On May 7, 2026 - Dimensional Fund Advisors Lp filed a 13F-HR form disclosing ownership of 616,883 shares of American Assets Trust, Inc. (US:AAT) valued at $11,356,816 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 12, 2026 disclosing 717,906 shares of American Assets Trust, Inc.. This represents a change in shares of -14.07% during the quarter. The current value of the position is $14,385,712 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)
2026-05-07 2026-03-31 13F AMERICAN ASSETS TR COM 024013104 616,883 -101,023 -14.07 11,357 -16.44 0.0005
2026-02-12 2025-12-31 13F AMERICAN ASSETS TR COM 024013104 717,906 12,122 1.72 13,590 -5.24 0.0029
2025-11-12 2025-09-30 13F AMERICAN ASSETS TR COM 024013104 705,784 7,547 1.08 14,341 4.00 0.0031
2025-08-12 2025-06-30 13F AMERICAN ASSETS TR COM 024013104 698,237 -6,404 -0.91 13,791 -2.83 0.0032
2025-05-13 2025-03-31 13F AMERICAN ASSETS TR COM 024013104 704,641 -34,085 -4.61 14,191 -26.84 0.0035
2025-02-13 2024-12-31 13F AMERICAN ASSETS TR COM 024013104 738,726 -23,893 -3.13 19,399 -4.80 0.0047
2024-11-07 2024-09-30 13F AMERICAN ASSETS TR COM 024013104 762,619 -16,508 -2.12 20,377 16.87 0.0049
2024-08-09 2024-06-30 13F AMERICAN ASSETS TR COM 024013104 779,127 69,985 9.87 17,436 12.22 0.0046
2024-05-10 2024-03-31 13F AMERICAN ASSETS TR COM 024013104 709,142 -32,366 -4.36 15,537 -6.92 0.0042
2024-02-07 2023-12-31 13F AMERICAN ASSETS TR COM 024013104 741,508 -66,294 -8.21 16,692 6.24 0.0049
2023-11-09 2023-09-30 13F AMERICAN ASSETS TR COM 024013104 807,802 28,913 3.71 15,712 5.07 0.0052
2023-08-09 2023-06-30 13F AMERICAN ASSETS TR COM 024013104 778,889 24,076 3.19 14,955 6.58 0.0048
2023-05-12 2023-03-31 13F AMERICAN ASSETS TR COM 024013104 754,813 40,742 5.71 14,031 77,850.00 0.0047
2023-02-09 2022-12-31 13F AMERICAN ASSETS TR COM 024013104 714,071 -21,075 -2.87 19 -99.90 0.0056
2022-11-10 2022-09-30 13F AMERICAN ASSETS TR COM 024013104 735,146 -6,425 -0.87 18,907 -14.15 0.0073
2022-08-12 2022-06-30 13F AMERICAN ASSETS TR COM 024013104 741,571 1,055 0.14 22,023 -21.51 0.0079
2022-05-13 2022-03-31 13F AMERICAN ASSETS TR COM 024013104 740,516 -13,338 -1.77 28,059 -0.82 0.0086
2022-02-09 2021-12-31 13F AMERICAN ASSETS TR COM 024013104 753,854 -22,120 -2.85 28,292 -2.57 0.0086
2021-11-12 2021-09-30 13F AMERICAN ASSETS TR COM 024013104 775,974 6,080 0.79 29,038 1.15 0.0094
2021-08-12 2021-06-30 13F AMERICAN ASSETS TR COM 024013104 769,894 2,349 0.31 28,709 15.30 0.0091
2021-05-14 2021-03-31 13F AMERICAN ASSETS TR COM 024013104 767,545 -3,439 -0.45 24,900 11.83 0.0082
2021-03-08 2020-12-31 13F/A-2 AMERICAN ASSETS TR COM 024013104 770,984 -21,465 -2.71 22,265 16.63 0.0080
2021-02-11 2020-12-31 13F AMERICAN ASSETS TR COM 024013104 770,984 -21,465 22,265 8,040.9346
2020-11-12 2020-09-30 13F AMERICAN ASSETS TR COM 024013104 792,449 -24,989 -3.06 19,090 -16.12 0.0081
2020-08-13 2020-06-30 13F AMERICAN ASSETS TR COM 024013104 817,438 -6,546 -0.79 22,758 10.48 0.0100
2020-05-14 2020-03-31 13F AMERICAN ASSETS TR COM 024013104 823,984 38,787 4.94 20,599 -42.84 0.0107
2020-02-14 2019-12-31 13F AMERICAN ASSETS TR COM 024013104 785,197 42,983 5.79 36,040 3.89 0.0131
2019-11-12 2019-09-30 13F AMERICAN ASSETS TR COM 024013104 742,214 177,082 31.33 34,691 30.29 0.0135
2019-08-13 2019-06-30 13F AMERICAN ASSETS TR COM 024013104 565,132 16,504 3.01 26,627 5.83 0.0103
2019-08-12 2019-03-31 13F/A-2 AMERICAN ASSETS TR COM 024013104 548,628 -14,053 -2.50 25,161 11.32 0.0100
2019-05-10 2019-03-31 13F AMERICAN ASSETS TR COM 024013104 548,628 -14,053 25,161
2019-02-26 2018-12-31 13F/A-1 AMERICAN ASSETS TR COM 024013104 562,681 -9,990 -1.74 22,603 5.85 0.0102
2019-02-13 2018-12-31 13F AMERICAN ASSETS TR COM 024013104 562,681 -9,990 22,603
2018-11-13 2018-09-30 13F AMERICAN ASSETS TR COM 024013104 572,671 3,370 0.59 21,354 -2.04 0.0081
2018-08-10 2018-06-30 13F AMERICAN ASSETS TR COM 024013104 569,301 6,916 1.23 21,799 16.02 0.0087
2018-05-11 2018-03-31 13F AMERICAN ASSETS TR COM 024013104 562,385 18,249 3.35 18,789 -9.70 0.0078
2018-02-12 2017-12-31 13F AMERICAN ASSETS TR COM 024013104 544,136 30,146 5.87 20,808 1.79 0.0086
2017-11-13 2017-09-30 13F AMERICAN ASSETS TR COM 024013104 513,990 7,984 1.58 20,442 2.56 0.0089
2017-08-11 2017-06-30 13F AMERICAN ASSETS TR COM 024013104 506,006 19,335 3.97 19,932 -2.11 0.0092
2017-05-12 2017-03-31 13F AMERICAN ASSETS TR COM 024013104 486,671 30,115 6.60 20,362 3.53 0.0097
2017-02-09 2016-12-31 13F AMERICAN ASSETS TR COM 024013104 456,556 -5,978 -1.29 19,668 -1.98 0.0098
2016-11-10 2016-09-30 13F AMERICAN ASSETS TR COM 024013104 462,534 5,491 1.20 20,065 3.45 0.0108
2016-08-09 2016-06-30 13F AMERICAN ASSETS TR COM 024013104 457,043 1,938 0.43 19,396 6.77 0.0112
2016-05-13 2016-03-31 13F AMERICAN ASSETS TR COM 024013104 455,105 7,783 1.74 18,167 5.89 0.0109
2016-02-10 2015-12-31 13F AMERICAN ASSETS TR COM 024013104 447,322 55,348 14.12 17,156 7.12 0.0107
2015-11-13 2015-09-30 13F AMERICAN ASSETS TR COM 024013104 391,974 62,480 18.96 16,016 23.97 0.0105
2015-08-14 2015-06-30 13F AMERICAN ASSETS TR COM 024013104 329,494 56,189 20.56 12,919 9.21 0.0079
2015-05-14 2015-03-31 13F AMERICAN ASSETS TR COM 024013104 273,305 40,510 17.40 11,829 27.63 0.0075
2015-02-06 2014-12-31 13F AMERICAN ASSETS TR COM 024013104 232,795 22,411 10.65 9,268 33.60 0.0061
2014-11-13 2014-09-30 13F AMERICAN ASSETS TR COM 024013104 210,384 34,678 19.74 6,937 14.28 0.0049
2014-08-08 2014-06-30 13F AMERICAN ASSETS TR COM 024013104 175,706 46,735 36.24 6,070 39.51 0.0042
2014-05-14 2014-03-31 13F AMERICAN ASSETS TR COM 024013104 128,971 22,925 21.62 4,351 30.54 0.0033
2014-02-12 2013-12-31 13F AMERICAN ASSETS TR COM 024013104 106,046 36,770 53.08 3,333 57.66 0.0026
2013-11-13 2013-09-30 13F AMERICAN ASSETS TR COM 024013104 69,276 33,158 91.80 2,114 89.60 0.0018
2013-08-15 2013-06-30 13F AMERICAN ASSETS TR COM 024013104 36,118 36,118 1,115 0.0011
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.