American Assets Trust, Inc.
US ˙ NYSE ˙ US0240131047

SecurityAAT / American Assets Trust, Inc.
InstitutionMercer Global Advisors Inc /adv
Latest Disclosed Ownership32,117 shares
Latest Disclosed Value $ 591,274
Mercer Global Advisors Inc /adv reports 12.42% increase in ownership of AAT / American Assets Trust, Inc.

On May 15, 2026 - Mercer Global Advisors Inc /adv filed a 13F-HR form disclosing ownership of 32,117 shares of American Assets Trust, Inc. (US:AAT) valued at $591,274 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 28,568 shares of American Assets Trust, Inc.. This represents a change in shares of 12.42% during the quarter. The current value of the position is $759,888 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)
2026-05-15 2026-03-31 13F AMERICAN ASSETS TR COM 024013104 32,117 3,549 12.42 591 9.44 0.0009
2026-02-17 2025-12-31 13F AMERICAN ASSETS TR COM 024013104 28,568 -11,386 -28.50 541 -33.42 0.0008
2025-11-14 2025-09-30 13F AMERICAN ASSETS TR COM 024013104 39,954 12,227 44.10 812 48.26 0.0014
2025-08-14 2025-06-30 13F AMERICAN ASSETS TR COM 024013104 27,727 -8,128 -22.67 548 -24.24 0.0011
2025-05-15 2025-03-31 13F AMERICAN ASSETS TR COM 024013104 35,855 -18,126 -33.58 722 -49.05 0.0017
2025-02-14 2024-12-31 13F AMERICAN ASSETS TR COM 024013104 53,981 53,981 1,418 0.0035
2024-05-15 2024-03-31 13F AMERICAN ASSETS TR COM 024013104 0 -9,209 -100.00 0 0.0000
2024-02-15 2023-12-31 13F AMERICAN ASSETS TR COM 024013104 9,209 9,209 0 0.0006
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.