Ranked by reported Q1 2026 13F market value
Share of total reported institutional value in AAOI held by the largest 10 / 25 filers.
| # | Institution | Shares Held | Market Value | QoQ Change | Ownership % | % of Fund |
|---|---|---|---|---|---|---|
| 1 | BlackRock, Inc. | 7.2M | $608.4M | +35.5% | 9.111% | 0.01% |
| 2 | SUSQUEHANNA INTERNATIONAL GROUP, LLP | 4.1M | $348.7M | +3.2% | 5.221% | 0.04% |
| 3 | VANGUARD CAPITAL MANAGEMENT LLC | 3.1M | $259.0M | — | 3.878% | 0.01% |
| 4 | D. E. Shaw & Co., Inc. | 2.6M | $222.5M | +23.1% | 3.332% | 0.21% |
| 5 | CITADEL ADVISORS LLC | 2.5M | $210.7M | — | 3.156% | 0.10% |
| 6 | OBERWEIS ASSET MANAGEMENT INC/ | 2.3M | $198.8M | +15.2% | 2.977% | 5.87% |
| 7 | Invesco Ltd. | 2.0M | $170.4M | -42.6% | 2.552% | 0.03% |
| 8 | VANGUARD PORTFOLIO MANAGEMENT LLC | 1.8M | $152.4M | — | 2.283% | 0.01% |
| 9 | STATE STREET CORP | 1.6M | $139.1M | +2.4% | 2.083% | 0.00% |
| 10 | GEODE CAPITAL MANAGEMENT, LLC | 1.6M | $137.2M | +7.2% | 2.054% | 0.01% |
| 11 | Value Aligned Research Advisors, LLC | 1.3M | $109.4M | — | 1.638% | 0.54% |
| 12 | Hood River Capital Management LLC | 1.3M | $107.9M | -0.0% | 1.616% | 1.08% |
| 13 | GOLDMAN SACHS GROUP INC | 1.1M | $91.8M | +12.1% | 1.374% | 0.01% |
| 14 | UBS Group AG | 1.0M | $87.9M | +9.2% | 1.316% | 0.01% |
| 15 | RAYMOND JAMES FINANCIAL INC | 734K | $62.2M | +93.5% | 0.929% | 0.02% |
| 16 | MORGAN STANLEY | 728K | $61.5M | -57.2% | 0.922% | 0.00% |
| 17 | DRIEHAUS CAPITAL MANAGEMENT LLC | 632K | $53.5M | +24.6% | 0.801% | 0.39% |
| 18 | NORTHERN TRUST CORP | 583K | $49.4M | +10.7% | 0.739% | 0.01% |
| 19 | RENAISSANCE TECHNOLOGIES LLC | 565K | $47.8M | — | 0.716% | 0.07% |
| 20 | CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 532K | $45.0M | +0.7% | 0.674% | 0.01% |
| 21 | TUDOR INVESTMENT CORP ET AL | 523K | $44.2M | +337.6% | 0.663% | 0.16% |
| 22 | Neuberger Berman Group LLC | 517K | $44.0M | — | 0.655% | 0.03% |
| 23 | Point72 Asset Management, L.P. | 501K | $42.4M | — | 0.635% | 0.06% |
| 24 | Squarepoint Ops LLC | 496K | $41.9M | +156.7% | 0.628% | 0.05% |
| 25 | BALYASNY ASSET MANAGEMENT LLC | 469K | $39.7M | — | 0.594% | 0.14% |
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 AAOI — a direct measure of their conviction.
Filings activity in AAOI during Q1 2026, grouped by how each filer changed its position.
Institutions that opened a new AAOI position in Q1 2026
Institutions that fully closed their AAOI position in Q1 2026
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 | 363 | +70% | 34.34% | +21.83 pp | $4.58B | +174% |
| Q4 2025 | 213 | +22% | 12.51% | +3.36 pp | $1.67B | +37% |
| Q3 2025 | 174 | +20% | 9.15% | +2.40 pp | $1.22B | +36% |
| Q2 2025 | 145 | +2.1% | 6.75% | +3.23 pp | $901M | +92% |
| Q1 2025 | 142 | 8.4% | 3.52% | 4.92 pp | $470M | 58% |
| Q4 2024 | 155 | +12% | 8.44% | +5.22 pp | $1.13B | +162% |
| Q3 2024 | 139 | +4.5% | 3.22% | +1.38 pp | $430M | +75% |
| Q2 2024 | 133 | — | 1.84% | — | $246M | — |
Source: SEC 13F institutional filings. Ownership % requires market cap data and will show once linked. Δ columns compare to the immediately prior filed quarter.
Quick answers to the most common questions about buying AAOI stock.
Based on Q1 2026 13F filings, institutional ownership of Applied Optoelectronics, Inc. stands at 34.3%, held across 363 reporting institutions.
BlackRock, Inc. is the largest reported institutional holder of AAOI, with approximately 7,192,329 shares worth $0.61B as of Q1 2026.
Yes — 4 widely-followed marquee investors appear among the top 25 institutional holders of AAOI, including SUSQUEHANNA INTERNATIONAL GROUP, LLP, CITADEL ADVISORS LLC, RENAISSANCE TECHNOLOGIES LLC, Point72 Asset Management, L.P..
Our composite Smart Money Score for AAOI is 90 out of 100 (Strong Smart Money). It combines net institutional buying activity, ownership shift, marquee investor presence, and holder-count growth.
182 institutions opened new positions in AAOI during Q1 2026, while 32 fully exited. 155 added to existing positions and 24 trimmed.
AAOI institutional ownership rose by 21.83 percentage points quarter-over-quarter, with a net change of +150 holders.
The top 10 institutions account for 53.4% of all reported 13F value in AAOI, and the top 25 account for 73.7%.
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.
Applied Optoelectronics, Inc. (AAOI) Institutional Ownership