DaveManuel.com · Institutional Ownership · Who Owns It
APPLIED OPTOELECTRONICS INC (AAOI)
Institutional ownership reported to the SEC as of Q2 2026, across 32 quarters.
492
Reporting holders
$10.9B
Reported value
60.5%
Of shares outstanding
12.8%
Calls
17.7%
Puts
+108
Holder change
Institutions report 51,131,118 shares against 84,569,237 outstanding. Shares only - option lines are excluded, which is why this can be compared with the company at all. The count comes from the cover page of the company's own most recent report, so it is dated when that was filed rather than at quarter end.
Calls and puts are the parts of reported value carried in derivative lines rather than shares, and they point in opposite directions: a manager holding calls is positioned for the security, one holding puts against it - or hedging shares they already own, which is why index funds carry so many. Most sites add the two together and report one figure, which averages away the only interesting part.
Holders
| Filer | Value | Shares | Their book | Held | Change |
|---|---|---|---|---|---|
| BlackRock, Inc. | $955.7M | 6,450,270 | 0.01% | 8q | -10.3%-$109.9M |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | $895.2M incl. $799.1M options CALL+PUT | 648,986 | 0.07% | 31q | +646.2%+$775.2M |
| Marex Group Ltd | $846.0M incl. $426.7M options CALL+PUT | 2,830,272 | 3.59% | 2q | +878.8%+$759.6M |
| JANE STREET GROUP, LLC | $711.3M incl. $627.8M options CALL+PUT | 563,557 | 0.06% | 13q | -75.3%-$2.2B |
| Invesco Ltd. | $505.9M | 3,414,262 | 0.04% | 11q | +69.5%+$207.4M |
| VANGUARD CAPITAL MANAGEMENT LLC | $498.3M | 3,363,001 | 0.01% | 2q | +9.8%+$44.7M |
| CITADEL ADVISORS LLC | $429.5M incl. $418.8M options CALL+PUT | 72,798 | 0.05% | 31q | -82.7%-$2.1B |
| VANGUARD PORTFOLIO MANAGEMENT LLC | $392.9M | 2,651,718 | 0.02% | 2q | +47.2%+$125.9M |
| IMC-Chicago, LLC | $333.8M incl. $300.7M options CALL+PUT | 223,442 | 0.08% | 10q | +101.5%+$168.1M |
| UBS Group AG | $315.5M incl. $2.7M options CALL | 2,111,464 | 0.04% | 31q | +117.5%+$170.5M |
| OBERWEIS ASSET MANAGEMENT INC/ | $265.4M | 1,791,127 | 5.48% | 12q | -23.8%-$82.8M |
| GEODE CAPITAL MANAGEMENT, LLC | $247.6M | 1,670,936 | 0.01% | 31q | +3.1%+$7.4M |
| Value Aligned Research Advisors, LLC | $240.1M incl. $3.8M options CALL | 1,595,124 | 0.60% | 2q | +25.8%+$49.3M |
| GOLDMAN SACHS GROUP INC | $235.0M | 1,586,453 | 0.02% | 12q | +46.2%+$74.3M |
| STATE STREET CORP | $221.9M | 1,497,617 | 0.01% | 31q | -8.9%-$21.7M |
| Hood River Capital Management LLC | $206.3M | 1,392,510 | 1.50% | 4q | +9.2%+$17.3M |
| Clear Street Group Inc. | $182.4M | 1,231,143 | 0.46% | new | NEW |
| MORGAN STANLEY | $165.2M | 1,115,138 | 0.01% | 35q | +53.3%+$57.4M |
| JPMORGAN CHASE & CO | $161.0M incl. $75.0K options PUT | 1,068,246 | 0.01% | 9q | -3.9%-$6.5M |
| FRONTIER CAPITAL MANAGEMENT CO LLC | $144.5M | 975,318 | 1.35% | 2q | +243.2%+$102.4M |
| Capula Management Ltd | $112.7M incl. $56.3M options PUT | 380,749 | 0.40% | new | NEW |
| D. E. Shaw & Co., Inc. | $103.0M incl. $96.9M options CALL+PUT | 41,056 | 0.05% | 11q | -98.1%-$5.2B |
| GROUP ONE TRADING LLC | $93.5M incl. $77.1M options CALL+PUT | 110,362 | 0.13% | 13q | -18.8%-$21.7M |
| Walleye Trading LLC | $92.6M CALL+PUT | options only | 0.11% | 7q | OPTIONS |
| CITIGROUP INC | $75.7M incl. $66.7M options CALL | 60,912 | 0.03% | 31q | -59.5%-$111.1M |
| WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC | $74.7M | 504,202 | 0.22% | new | NEW |
| VANGUARD FIDUCIARY TRUST CO | $72.4M | 488,922 | 0.02% | 2q | +9.2%+$6.1M |
| SIMPLEX TRADING, LLC | $70.9M incl. $70.9M options CALL+PUT | 419 | 0.04% | 14q | -98.9%-$6.7B |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | $70.5M | 476,027 | 0.01% | 12q | -10.6%-$8.3M |
| NORTHERN TRUST CORP | $61.9M | 417,720 | 0.01% | 31q | -28.4%-$24.6M |
| TUDOR INVESTMENT CORP ET AL | $56.4M incl. $47.4M options CALL+PUT | 60,695 | 0.08% | 7q | -86.3%-$354.8M |
| Point72 Asset Management, L.P. | $51.5M CALL+PUT | options only | 0.06% | 4q | OPTIONS |
| GILDER GAGNON HOWE & CO LLC | $50.8M | 343,014 | 0.52% | 5q | -24.7%-$16.6M |
| DIMENSIONAL FUND ADVISORS LP | $45.9M | 309,932 | 0.01% | 31q | HELD |
| Focus Partners Wealth | $42.4M | 286,179 | 0.04% | 3q | -24.5%-$13.8M |
| NOMURA HOLDINGS INC | $42.0M incl. $29.6M options CALL | 83,298 | 0.05% | new | NEW |
| Steward Partners Investment Advisory, LLC | $40.1M | 270,751 | 0.20% | 4q | HELD |
| MILLENNIUM MANAGEMENT LLC | $39.6M incl. $20.9M options CALL+PUT | 126,326 | 0.01% | 3q | +31.0%+$9.4M |
| BNP PARIBAS FINANCIAL MARKETS | $37.3M | 252,013 | 0.01% | 12q | +1195.8%+$34.5M |
| WESTFIELD CAPITAL MANAGEMENT CO LP | $37.0M | 249,553 | 0.12% | new | NEW |
| WELLINGTON MANAGEMENT GROUP LLP | $36.2M | 244,081 | 0.01% | 2q | -5.3%-$2.0M |
| VICTORY CAPITAL MANAGEMENT INC | $36.0M | 243,197 | 0.02% | 3q | +371.0%+$28.4M |
| NEUBERGER BERMAN GROUP LLC | $35.9M | 242,612 | 0.02% | 2q | -53.1%-$40.7M |
| RAYMOND JAMES FINANCIAL INC | $34.8M | 235,127 | 0.01% | 7q | -68.0%-$73.9M |
| Squarepoint Ops LLC | $34.4M incl. $17.4M options CALL+PUT | 114,429 | 0.04% | 5q | -76.9%-$114.6M |
| BANK OF AMERICA CORP /DE/ | $33.7M | 227,539 | 0.00% | 13q | -5.5%-$2.0M |
| Bank of New York Mellon Corp | $32.6M | 219,812 | 0.01% | 9q | +28.6%+$7.2M |
| EMERALD ADVISERS, LLC | $31.3M | 211,574 | 0.74% | 10q | -51.2%-$32.9M |
| AMERIPRISE FINANCIAL INC | $31.3M | 211,480 | 0.01% | 31q | -22.9%-$9.3M |
| MARSHALL WACE, LLP | $28.0M incl. $1.2M options CALL+PUT | 181,389 | 0.02% | 4q | +1.1%+$304.1K |
| CANADA PENSION PLAN INVESTMENT BOARD | $27.9M | 188,500 | 0.02% | new | NEW |
| Balyasny Asset Management L.P. | $27.9M incl. $1.9M options CALL | 175,683 | 0.03% | 9q | -62.5%-$46.6M |
| Nuveen, LLC | $26.9M | 181,377 | 0.01% | 6q | -52.6%-$29.8M |
| Oak Grove Capital LLC | $25.1M incl. $1.5M options CALL+PUT | 159,150 | 1.19% | 2q | +329.6%+$19.2M |
| VOYA INVESTMENT MANAGEMENT LLC | $24.0M | 162,017 | 0.02% | 9q | -32.7%-$11.7M |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | $23.4M | 158,204 | 0.00% | 9q | +50.0%+$7.8M |
| UNICOM Systems, Inc. | $22.6M | 152,483 | 1.47% | 2q | +122.3%+$12.4M |
| Weiss Asset Management LP | $22.5M | 151,868 | 0.24% | new | NEW |
| Swiss National Bank | $21.9M | 148,000 | 0.01% | 10q | +15.4%+$2.9M |
| Jain Global LLC | $21.6M | 145,938 | 0.08% | 4q | +85.6%+$10.0M |
| Assenagon Asset Management S.A. | $21.4M | 144,328 | 0.01% | 2q | +196.0%+$14.2M |
| KENNEDY CAPITAL MANAGEMENT LLC | $21.2M | 143,000 | 0.38% | 3q | -48.8%-$20.2M |
| Driehaus Capital Management LLC | $20.7M | 139,416 | 0.12% | 5q | -78.0%-$73.0M |
| EMERALD MUTUAL FUND ADVISERS TRUST | $20.3M | 136,959 | 0.71% | 10q | -49.6%-$20.0M |
| NORGES BANK | $19.4M | 131,200 | 0.00% | new | NEW |
| Shellback Capital, LP | $19.4M | 131,004 | 1.70% | 2q | +101.5%+$9.8M |
| FIRST TRUST ADVISORS LP | $19.2M | 129,769 | 0.01% | 5q | -40.0%-$12.8M |
| Funde Sino Life Insurance Co Ltd | $17.8M | 120,306 | 5.81% | new | FIRST |
| ROYAL BANK OF CANADA | $17.0M | 114,758 | 0.00% | 10q | -10.3%-$2.0M |
| PRICE T ROWE ASSOCIATES INC /MD/ | $16.4M | 110,933 | 0.00% | 8q | -93.6%-$240.3M |
| ALGERT GLOBAL LLC | $16.4M | 110,843 | 0.19% | 4q | +3.9%+$623.5K |
| Tidal Investments LLC | $16.3M incl. $14.1M options CALL | 14,843 | 0.03% | 2q | +174.4%+$10.3M |
| Allianz Asset Management GmbH | $16.2M incl. $15.1M options CALL+PUT | 7,803 | 0.01% | new | NEW |
| SILVERCREST ASSET MANAGEMENT GROUP LLC | $15.8M | 106,911 | 0.10% | 8q | -26.6%-$5.8M |
| LORD, ABBETT & CO. LLC | $15.4M | 103,700 | 0.04% | 2q | +89.9%+$7.3M |
| FRED ALGER MANAGEMENT, LLC | $15.1M | 101,831 | 0.05% | new | NEW |
| FEDERATED HERMES, INC. | $14.9M | 100,296 | 0.02% | 2q | +42761.5%+$14.8M |
| Alphadyne Asset Management LP | $14.7M CALL+PUT | options only | 0.14% | 2q | OPTIONS |
| PEAK6 LLC | $14.1M CALL+PUT | options only | 0.03% | 7q | OPTIONS |
| CAPITAL FUND MANAGEMENT S.A. | $13.4M incl. $7.9M options CALL+PUT | 37,487 | 0.06% | 10q | +5.0%+$636.9K |
| SG Americas Securities, LLC | $13.4M incl. $5.3M options PUT | 54,791 | 0.01% | 4q | -72.0%-$34.6M |
| TWO SIGMA INVESTMENTS, LP | $13.3M incl. $10.0M options CALL+PUT | 22,113 | 0.01% | 11q | -93.5%-$192.2M |
| SEI INVESTMENTS CO | $13.3M | 89,584 | 0.01% | 3q | -43.6%-$10.3M |
| CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM | $12.7M | 85,592 | 0.01% | 10q | +21.5%+$2.2M |
| COMMONWEALTH EQUITY SERVICES, LLC | $11.4M | 77,213 | 0.01% | 3q | -13.9%-$1.8M |
| 1492 Capital Management LLC | $11.3M | 76,405 | 3.34% | 3q | -38.9%-$7.2M |
| RHUMBLINE ADVISERS | $11.2M | 75,872 | 0.01% | 9q | -6.5%-$787.0K |
| Zweig-DiMenna Associates LLC | $10.6M | 71,835 | 0.97% | 3q | -10.3%-$1.2M |
| FIFTH THIRD BANCORP | $10.5M | 70,932 | 0.02% | 2q | +267.0%+$7.6M |
| Russell Investments Group, Ltd. | $10.4M | 69,926 | 0.01% | 8q | +95.9%+$5.1M |
| Global Trust Asset Management, LLC | $10.3M | 69,849 | 3.24% | 3q | +17.3%+$1.5M |
| Legal & General Group Plc | $9.4M | 63,555 | 0.00% | 10q | -1.9%-$184.2K |
| AXIOM INVESTORS LLC /DE | $9.4M | 63,178 | 0.08% | 2q | -33.5%-$4.7M |
| STATE BOARD OF ADMINISTRATION OF FLORIDA RETIREMENT SYSTEM | $9.2M | 61,806 | 0.02% | 3q | +311.0%+$6.9M |
| T. Rowe Price Investment Management, Inc. | $8.8M | 59,087 | 0.01% | 2q | -90.8%-$86.5M |
| FirstWave Capital Management LLC | $8.6M | 58,277 | 3.81% | 2q | +199.6%+$5.8M |
| NOMURA ASSET MANAGEMENT INTERNATIONAL INC. | $8.5M | 57,532 | 0.01% | new | NEW |
| Timothy G. Youngquist 2020 Irrevocable Trust | $8.3M | 55,796 | 1.62% | 3q | +16.5%+$1.2M |
| RICE HALL JAMES & ASSOCIATES, LLC | $8.3M | 55,769 | 0.40% | 10q | -43.3%-$6.3M |
| OAK RIDGE INVESTMENTS LLC | $8.3M | 55,730 | 0.47% | 3q | +46.7%+$2.6M |
Five percent filings
Anyone crossing 5% of a company must say so within days - far sooner than the next quarterly holdings report. A 13D declares an intent to influence the company; a 13G is the passive version. See all activist filings →
| Filed | Form | Filer | % of class |
|---|---|---|---|
| 2026-10-30 | 13G | Vanguard Capital Management | 5.1% |
| 2026-10-27 | 13G/A | BlackRock, Inc. | 4.9% |
What the company announced
Form 8-K filings from the last 120 days, showing only the items worth a reader's attention. Earnings releases, exhibit attachments and general disclosures are filed constantly and are left out. Filed is when the SEC received it; event is the date the company says the thing happened.
| Filed | Event date | What | Source |
|---|---|---|---|
| 2026-09-15 | 2026-09-10 | Material agreement entered | filing |
| 2026-09-10 | 2026-09-04 | Material agreement entered | filing |
| 2026-09-01 | 2026-08-31 | Material agreement entered | filing |
| 2026-08-24 | 2026-08-18 | Directors or officers departed or appointed Material agreement entered | filing |
| 2026-08-21 | 2026-08-21 | Material agreement entered | filing |
What the insiders did
Open market purchases and sales reported on Form 4 in the last 180 days. Grants, option exercises and shares surrendered to cover tax are left out: they are compensation rather than a decision to buy or sell. Where a broker filled one order in tranches the lines are summed, because it was one decision.
Officers and directors
| Date | Insider | Role | Side | Shares | Value |
|---|---|---|---|---|---|
| 2026-05-26 | DeLaney Cynthia | Director | Sold | 56,575 | $10.7M |
| 2026-05-19 | Lin Chih-Hsiang (Thompson) | President and CEO | Sold | 58,000 | $10.0M |
| 2026-06-12 | Lin Chih-Hsiang (Thompson) | President and CEO | Sold | 59,000 | $9.8M |
| 2026-06-17 | Chang Hung-Lun (Fred) | *** See Remarks | Sold | 40,329 | $6.9M |
| 2026-05-19 | Yeh Shu-Hua (Joshua) | *** See Remarks | Sold | 39,154 | $6.8M |
| 2026-05-19 | Chang Hung-Lun (Fred) | *** See Remarks | Sold | 33,630 | $5.8M |
| 2026-05-19 | Murry Stefan J. | Chief Financial Officer | Sold | 33,000 | $5.7M |
| 2026-06-12 | Chang Hung-Lun (Fred) | *** See Remarks | Sold | 34,000 | $5.7M |
| 2026-06-12 | Murry Stefan J. | Chief Financial Officer | Sold | 33,000 | $5.5M |
| 2026-06-12 | Kuo David C | *** See Remarks | Sold | 29,227 | $4.9M |
| 2026-06-12 | Yeh Shu-Hua (Joshua) | *** See Remarks | Sold | 28,826 | $4.8M |
| 2026-09-08 | Chang Hung-Lun (Fred) | *** See Remarks | Sold | 32,172 | $3.5M |
Quarter by quarter
Coverage begins with the quarter ending 2018-12-31. Earlier filings exist only as occasional late amendments, too sparse to describe a market, so they are not shown.
| Quarter | Holders | Value | Shares | New | Added | Trimmed | Options |
|---|---|---|---|---|---|---|---|
| Q3 2026 | 112 | $145.3M | 1,450,994 | 28 | 41 | 30 | 0.7% |
| Q2 2026 | 492 | $10.9B | 51,131,118 | 176 | 135 | 144 | 30.5% |
| Q1 2026 | 384 | $5.8B | 53,102,199 | 185 | 95 | 79 | 22.1% |
| Q4 2025 | 224 | $2.1B | 47,748,560 | 61 | 88 | 45 | 19.9% |
| Q3 2025 | 184 | $1.3B | 39,757,830 | 56 | 54 | 42 | 22.0% |
| Q2 2025 | 156 | $964.2M | 33,218,633 | 43 | 62 | 30 | 11.4% |
| Q1 2025 | 150 | $527.2M | 31,114,492 | 27 | 60 | 38 | 9.4% |
| Q4 2024 | 162 | $1.4B | 30,700,610 | 39 | 55 | 39 | 18.7% |
| Q3 2024 | 147 | $472.3M | 29,490,961 | 43 | 41 | 37 | 10.7% |
| Q2 2024 | 138 | $270.5M | 29,459,113 | 42 | 41 | 38 | 9.8% |
| Q1 2024 | 122 | $437.5M | 29,152,287 | 45 | 35 | 29 | 7.8% |
| Q4 2023 | 110 | $518.8M | 24,330,082 | 45 | 22 | 27 | 9.4% |
| Q3 2023 | 82 | $215.9M | 15,670,599 | 34 | 20 | 20 | 20.4% |
| Q2 2023 | 57 | $75.1M | 12,050,426 | 15 | 19 | 10 | 4.4% |
| Q1 2023 | 53 | $19.5M | 8,776,636 | 9 | 12 | 20 | 0.7% |
| Q4 2022 | 61 | $18.3M | 9,275,210 | 12 | 10 | 23 | 3.9% |
| Q3 2022 | 56 | $28.4M | 9,875,578 | 12 | 12 | 23 | 5.5% |
| Q2 2022 | 52 | $16.3M | 10,083,467 | 4 | 15 | 23 | 4.1% |
| Q1 2022 | 62 | $37.3M | 9,776,172 | 5 | 15 | 29 | 4.3% |
| Q4 2021 | 80 | $65.7M | 11,820,735 | 19 | 24 | 26 | 7.6% |
| Q3 2021 | 96 | $122.3M | 16,189,270 | 10 | 38 | 22 | 4.8% |
| Q2 2021 | 106 | $133.5M | 14,870,907 | 20 | 29 | 36 | 5.7% |
| Q1 2021 | 105 | $604.2M | 71,220,866 | 19 | 41 | 23 | 1.5% |
| Q4 2020 | 105 | $155.2M | 16,171,524 | 18 | 31 | 31 | 11.2% |
| Q3 2020 | 106 | $513.0M | 44,103,163 | 11 | 39 | 27 | 3.3% |
| Q2 2020 | 112 | $484.5M | 43,328,467 | 23 | 32 | 24 | 2.8% |
| Q1 2020 | 98 | $254.3M | 32,012,606 | 10 | 33 | 30 | 4.5% |
| Q4 2019 | 117 | $421.5M | 32,990,383 | 19 | 23 | 39 | 7.0% |
| Q3 2019 | 113 | $400.9M | 33,038,607 | 8 | 40 | 28 | 7.5% |
| Q2 2019 | 124 | $456.1M | 40,524,971 | 20 | 50 | 25 | 8.6% |
| Q1 2019 | 131 | $254.8M | 18,781,760 | 22 | 38 | 38 | 10.1% |
| Q4 2018 | 135 | $346.8M | 18,741,251 | 5 | 3 | 1 | 16.6% |