Ranked by reported Q1 2026 13F market value
Share of total reported institutional value in AAT held by the largest 10 / 25 filers.
| # | Institution | Shares Held | Market Value | QoQ Change | Ownership % | % of Fund |
|---|---|---|---|---|---|---|
| 1 | BlackRock, Inc. | 9.5M | $174.0M | +1.5% | 15.397% | 0.00% |
| 2 | AMERICAN ASSETS INC | 7.4M | $135.8M | 0.0% | 12.012% | 45.49% |
| 3 | VANGUARD PORTFOLIO MANAGEMENT LLC | 5.4M | $99.4M | — | 8.791% | 0.01% |
| 4 | Senvest Management, LLC | 3.6M | $65.9M | +22.1% | 5.827% | 2.18% |
| 5 | STATE STREET CORP | 2.8M | $52.4M | -1.8% | 4.633% | 0.00% |
| 6 | VANGUARD CAPITAL MANAGEMENT LLC | 2.1M | $39.0M | — | 3.451% | 0.00% |
| 7 | American Assets Investment Management, LLC | 1.5M | $27.2M | 0.0% | 2.406% | 1.85% |
| 8 | GEODE CAPITAL MANAGEMENT, LLC | 1.3M | $24.6M | +0.9% | 2.177% | 0.00% |
| 9 | CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 1.3M | $23.2M | +16.6% | 2.055% | 0.00% |
| 10 | ARROWSTREET CAPITAL, LIMITED PARTNERSHIP | 961K | $17.7M | -7.2% | 1.565% | 0.01% |
| 11 | AMERIPRISE FINANCIAL INC | 953K | $17.5M | -25.8% | 1.552% | 0.00% |
| 12 | MORGAN STANLEY | 883K | $16.3M | -7.5% | 1.439% | 0.00% |
| 13 | PRIVATE MANAGEMENT GROUP INC | 807K | $14.8M | — | 1.314% | 0.43% |
| 14 | Invesco Ltd. | 806K | $14.8M | +24.0% | 1.312% | 0.00% |
| 15 | NORTHERN TRUST CORP | 775K | $14.3M | +0.8% | 1.262% | 0.00% |
| 16 | DIMENSIONAL FUND ADVISORS LP | 617K | $11.4M | -14.1% | 1.005% | 0.00% |
| 17 | FULLER & THALER ASSET MANAGEMENT, INC. | 596K | $11.0M | +47.2% | 0.970% | 0.04% |
| 18 | TWO SIGMA INVESTMENTS, LP | 543K | $10.0M | +292.7% | 0.884% | 0.01% |
| 19 | HOTCHKIS & WILEY CAPITAL MANAGEMENT LLC | 466K | $8.6M | +13.4% | 0.759% | 0.03% |
| 20 | Bank of New York Mellon Corp | 459K | $8.5M | -7.7% | 0.749% | 0.00% |
| 21 | MILLENNIUM MANAGEMENT LLC | 450K | $8.3M | +66.5% | 0.733% | 0.01% |
| 22 | UBS Group AG | 425K | $7.8M | +368.0% | 0.693% | 0.00% |
| 23 | GOLDMAN SACHS GROUP INC | 418K | $7.7M | +19.1% | 0.681% | 0.00% |
| 24 | FIRST TRUST ADVISORS LP | 411K | $7.6M | +2.7% | 0.669% | 0.01% |
| 25 | AQR CAPITAL MANAGEMENT LLC | 358K | $6.6M | -28.4% | 0.583% | 0.00% |
denotes a marquee investor (Buffett, Burry, ARK, Tiger Global, Pershing Square, Baupost and other widely-followed managers). “% of Fund” shows how much of that investor’s total 13F portfolio is invested in AAT — a direct measure of their conviction.
Filings activity in AAT during Q1 2026, grouped by how each filer changed its position.
8 quarters of 13F filings · Δ columns show change vs prior quarter
| Quarter | Inst. Holders | Δ Holders | Ownership % | Δ Ownership | Total 13F Value | Δ Value |
|---|---|---|---|---|---|---|
| Q1 2026 | 232 | +2.7% | 65.42% | 3.06 pp | $980M | 4.5% |
| Q4 2025 | 226 | 1.3% | 68.48% | 4.12 pp | $1.03B | 5.7% |
| Q3 2025 | 229 | +2.2% | 72.60% | +4.81 pp | $1.09B | +7.1% |
| Q2 2025 | 224 | +1.8% | 67.79% | +1.45 pp | $1.02B | +2.2% |
| Q1 2025 | 220 | +1.9% | 66.34% | 22.43 pp | $994M | 25% |
| Q4 2024 | 216 | +1.9% | 88.77% | 0.13 pp | $1.33B | 0.1% |
| Q3 2024 | 212 | +7.6% | 88.90% | +14.04 pp | $1.33B | +19% |
| Q2 2024 | 197 | — | 74.86% | — | $1.12B | — |
Source: SEC 13F institutional filings. Ownership % requires market cap data and will show once linked. Δ columns compare to the immediately prior filed quarter.
Latest Form 4 transactions by company officers and directors. Insider buys are widely viewed as the highest-conviction signal because executives are risking personal capital.
| Date | Insider | Action | Shares | Price | Value |
|---|---|---|---|---|---|
| Jun 15, 2026 | RADY ERNEST S | Buy | 10K | $24.21 | $242K |
| Jun 10, 2026 | RADY ERNEST S | Buy | 10K | $24.64 | $246K |
| May 19, 2026 | RADY ERNEST S | Buy | 17K | $21.15 | $366K |
| May 12, 2026 | RADY ERNEST S | Buy | 15K | $21.01 | $308K |
Quick answers to the most common questions about buying AAT stock.
Based on Q1 2026 13F filings, institutional ownership of American Assets Trust, Inc. stands at 65.4%, held across 232 reporting institutions.
BlackRock, Inc. is the largest reported institutional holder of AAT, with approximately 9,452,442 shares worth $0.17B as of Q1 2026.
Yes — 2 widely-followed marquee investors appear among the top 25 institutional holders of AAT, including TWO SIGMA INVESTMENTS, LP, MILLENNIUM MANAGEMENT LLC.
Our composite Smart Money Score for AAT is 46 out of 100 (Neutral). It combines net institutional buying activity, ownership shift, marquee investor presence, and holder-count growth.
37 institutions opened new positions in AAT during Q1 2026, while 31 fully exited. 68 added to existing positions and 127 trimmed.
AAT institutional ownership fell by 3.06 percentage points quarter-over-quarter, with a net change of +6 holders.
The top 10 institutions account for 67.2% of all reported 13F value in AAT, and the top 25 account for 84.1%.
All data is sourced from SEC Form 13F filings, which institutional investment managers with at least $100M in assets are required to file each quarter. We process every 13F filing from EDGAR and recompute the aggregates after each cycle. Insider transactions are sourced from Form 4 filings.
American Assets Trust, Inc. (AAT) Institutional Ownership