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AAOI · Applied Optoelectronics, Inc. · Holdings

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$77.88 -0.32 (-0.41%)
Market Cap
$6.60B
Shares
84.57M
Volume · Oct 20 5.7M Avg daily vol (3M) 10.12M

Institutional ownership from SEC Form 13F filings. Investment managers with more than $100 million in U.S. equities must disclose their positions every quarter, within 45 days of quarter-end, so the holdings shown can lag the market by up to a quarter.

Institutional holdings are being reconciled with SEC filings. Holder totals and changes may be incomplete until reconciliation finishes.
The Sep 30, 2026 filing window is still open — showing the latest known positions. Funds that have not filed yet carry their prior-quarter positions; a fund that filed without this stock counts as sold out. Each fund's Change is measured against its own previous reported quarter, shown in the Reported column. Pick a completed quarter in the Quarter selector below to put every fund on one quarter and see the stock-wide activity breakdown.
Holders: 492
Total Value: $10,399,376,548
Total Shares: 70,404,551
Showing 1–100 of 544 holdings by value · page 1 of 6

Institutional Ownership Trend

27 quarters

Holder Concentration

Across 492 13F filers
Top Holder
9.2%
Sep 2023 → Jun 2026 · range 8.3% – 11.8%
of institutional value
Top 5
37.5%
Sep 2023 → Jun 2026 · range 29.9% – 39.6%
of institutional value
Top 10
55.8%
Sep 2023 → Jun 2026 · range 46.4% – 59.4%
of institutional value
HHI
407
Sep 2023 → Jun 2026 · range 331 – 473
Broadly held

Who Holds AAOI

Last 8 quarters through Sep 30, 2026 (filing window open)

Each kind of 13F filer's share of the common shares 13F filers report. Holder type comes from regulatory records, never the filer's name; style, turnover and horizon are measured from each filer's own 13F book. The quarter selector does not change this card.

Jun 30, 2026, the newest closed quarter: 483 filers, like-for-like change -4.3%; actively managed books -7.3%; index-like books +1.7%.

Holder type Share Filers Change
Registered adviser 40.7% 251 -13.7%
Exempt adviser 1.4% 11 +21.4%
Adviser 7.8% 12 +19.0%
Bank 11.5% 20 +13.5%
Insurer 0.1% 3 0.0%
Broker-dealer 0.3% 2 -12.8%
Benefit plan 0.4% 6 +82.6%
Non-US 1.4% 10 +13.1%
Holding company 19.0% 10 -1.8%
Unknown 17.3% 158 -4.4%

The Sep 30, 2026 filing window is still open, so its bar carries the Jun 30, 2026 positions of filers that have not filed yet.

How the mix is measured

Shares are 13F common shares restated to today's split basis; options and principal amounts are left out. The change compares only filers with a 13F in both quarters and keeps each filer in its bucket of the later quarter on both sides; a filer that continues under a new CIK is compared through its successor. Holder type comes from each filer's current regulatory profile; client base and private funds come from the Form ADV roster current at each quarter end (rosters from December 2019, so an earlier quarter reads Unknown). Style, turnover, horizon and book size are measured from each filer's 13F book in the newest measured quarter, and Not measured means none was. Actively managed books are those measured systematic-like, concentrated or diversified active.

Excluded 5 holders with no observed 2026-03-31 13F and 5 holders with no observed 2026-06-30 13F. Compared across CIK changes: JANUS HENDERSON GROUP PLC continues as Jupiter Topco LLC.

Conviction and Crowding

52 13F filers, quarter ended Mar 31, 2023

Measured across every 13F filer's common-share book once the quarter's filing window closed. Crowding counts filers with high turnover or that advise private funds on Form ADV.

Conviction holders
0
0.000% of filers hold it in their top 10
Dec 31, 2022: 0
Holders above 5%
0
median weight 0.000%
Dec 31, 2022: 0
Crowding
9.16%
of shares outstanding, 28th percentile
Dec 31, 2022: 8.67%
Private-fund advisers
8.87%
of shares outstanding
Institutional ownership
30.2%
32.8% of the estimated free float
Top 10 holders
80.4%
of 13F shares, Herfindahl 0.085
Active holders
-7.1%
like-for-like share change of active filers
5% stakes on record
0
0 13D, 0 13G
How long holders have held it value-weighted 9.8 quarters
Under 1 year 20.7% 1 to 3 years 24.0% 3 years or more 55.3% Since coverage start 0.000%

Estimated Holder Cost Basis

Quarter ended Mar 31, 2023, on that quarter's share basis

Estimated, never filed: each 13F buy is costed at its quarter's average traded price and each sale keeps the average cost, so this is what holders paid on average if they traded evenly through each quarter.

Estimated avg cost
$4.24
estimated per share
Dec 31, 2022: $4.33
Quarter-end price
$2.21
implied by 13F values
Estimated gain or loss
-47.9%
price against the estimated cost
Estimated at a loss
100.0%
of costed 13F value

Estimated cost covers 44.5% of the 13F shares; positions already held when a filer's 13F history starts, or bought in a quarter without a trusted average price, have no estimate.

Shareholder Targets

13F filers that own its peers but not AAOI, quarter ended Mar 31, 2023

AAOI has no holder-overlap peers, so these filers hold the largest Technology stocks: AAPL, MSFT, NVDA, AVGO, CSCO, CRM, ADBE, TXN, ACN, AMD, ORCL, INTU, QCOM, ADI, APH, INTC, NOW, AMAT, TSM, ADP. 5,305 filers in all.

# Filer In peers
1 Berkshire Hathaway Inc Insurer, Concentrated $150,975,906,990 1 held
2 PRICE T ROWE ASSOCIATES INC /MD/ Registered adviser, Diversified active $139,295,382,500 20 held
3 BANK OF AMERICA CORP /DE/ Bank, Diversified active $88,732,167,432 20 held
4 NORGES BANK Non-US, Index-like $87,782,190,148 20 held
5 Capital World Investors Adviser, Diversified active $61,660,621,317 14 held
6 Capital International Investors Adviser, Diversified active $59,718,176,954 15 held
7 WELLINGTON MANAGEMENT GROUP LLP Holding company, Diversified active $55,127,663,497 20 held
8 Legal & General Group Plc Unknown, Index-like $54,521,609,204 20 held
9 Capital Research Global Investors Adviser, Diversified active $52,548,232,658 16 held
10 CHARLES SCHWAB INVESTMENT MANAGEMENT INC Registered adviser, Diversified active $51,941,451,838 19 held

Fund Ownership of AAOI by Fund Type

Registered funds' Form N-PORT reports for the quarter ended Jun 30, 2026

Index funds and index ETFs hold 12.54% of shares outstanding.

Fund type Of shares outstanding Shares
Index funds 2.44% 2,063,453
Index ETFs 10.10% 8,544,658
Active ETFs 1.97% 1,668,481
Active funds 7.07% 5,976,038
Unclassified 0.37% 310,104
All registered funds 21.95% 18,562,734
How fund types are measured

Each fund series counts once, with its latest Form N-PORT report dated inside the quarter; only long share positions count, restated to today's split basis. The fund type is the series' latest Form N-CEN answer on or before the quarter end (the index-fund box and the exchange-traded flag), never its name. Unclassified funds have no usable N-CEN; unit investment trusts are among them, so index ownership is a floor. Funds sit inside their advisers' 13F reports, so these shares overlap the 13F figures and are never added to them.

Showing 100 of 544
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Holder Value (USD) % of 13F Shares Open

Showing the top 100 of 544 holders. Create a free account to see every holder, past quarters, search, filters and CSV export.

Key facts CIK 1158114 CUSIP 03823U102 13F (30d) 50 filings 46 filers Visit website Investor relations