BlackRock
· Added
+$120M
Change
+1.9M
Date
Q1 2026
AA
| Investor | Type | Est. change | Change | Δ Own | Date | ||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
|
BlackRock
· Added
+$120M
Change
+1.9M
Date
Q1 2026
|
BlackRock | Added· Q1 2026 | +$120M | +1.9M | – | Q1 2026 | |||||
|
Hawk Ridge Capital Management LP
· Exited
−$109M
Change
−1.7M
Δ Own
−100.0%
Date
Q1 2026
|
Hawk Ridge Capital Management LP | Exited· Q1 2026 | −$109M | −1.7M | −100.0% | Q1 2026 | |||||
|
Invesco Ltd.
· Reduced
−$96M
Change
−1.5M
Δ Own
−42.6%
Date
Q1 2026
|
Invesco Ltd. | Reduced· Q1 2026 | −$96M | −1.5M | −42.6% | Q1 2026 | |||||
|
Value Aligned Research Advisors, LLC
· New
+$81M
Change
+1.3M
Date
Q1 2026
|
Value Aligned Research Advisors, LLC | New· Q1 2026 | +$81M | +1.3M | – | Q1 2026 | |||||
|
JPMorgan Chase & Co
· Added
+$67M
Change
+1.1M
Date
Q1 2026
|
JPMorgan Chase & Co | Added· Q1 2026 | +$67M | +1.1M | – | Q1 2026 | |||||
|
Morgan Stanley
· Reduced
−$62M
Change
−972K
Date
Q1 2026
|
Morgan Stanley | Reduced· Q1 2026 | −$62M | −972K | – | Q1 2026 | |||||
|
BNP Paribas Financial Markets
· Reduced
−$60M
Change
−936K
Date
Q1 2026
|
BNP Paribas Financial Markets | Reduced· Q1 2026 | −$60M | −936K | – | Q1 2026 | |||||
|
D. E. Shaw & Co., Inc.
· Added
+$48M
Change
+750K
Δ Own
+54.9%
Date
Q1 2026
|
D. E. Shaw & Co., Inc. | Added· Q1 2026 | +$48M | +750K | +54.9% | Q1 2026 | |||||
|
T. Rowe Price Investment Management, Inc.
· New
+$41M
Change
+643K
Date
Q1 2026
|
T. Rowe Price Investment Management, Inc. | New· Q1 2026 | +$41M | +643K | – | Q1 2026 | |||||
|
Jane Street Group, LLC
· Added
+$38M
Change
+596K
Date
Q1 2026
|
Jane Street Group, LLC | Added· Q1 2026 | +$38M | +596K | – | Q1 2026 | |||||
|
Renaissance Technologies LLC
· New
+$36M
Change
+565K
Date
Q1 2026
|
Renaissance Technologies LLC | New· Q1 2026 | +$36M | +565K | – | Q1 2026 | |||||
|
Royce & Associates LP
· Reduced
−$35M
Change
−553K
Date
Q1 2026
|
Royce & Associates LP | Reduced· Q1 2026 | −$35M | −553K | – | Q1 2026 | |||||
|
Neuberger Berman Group LLC
· New
+$33M
Change
+517K
Date
Q1 2026
|
Neuberger Berman Group LLC | New· Q1 2026 | +$33M | +517K | – | Q1 2026 | |||||
|
T. Rowe Price Associates
· Reduced
−$32M
Change
−497K
Date
Q1 2026
|
T. Rowe Price Associates | Reduced· Q1 2026 | −$32M | −497K | – | Q1 2026 | |||||
|
Artemis Investment Management LLP
· Reduced
−$28M
Change
−432K
Date
Q1 2026
|
Artemis Investment Management LLP | Reduced· Q1 2026 | −$28M | −432K | – | Q1 2026 | |||||
| Insider | Title | Type | Price | Qty | Value | Owned | ΔOwn | Trade date | Filed date | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
Kuo David C.
· Officer
4 operations
-$389K
|
Kuo David C. | Officer | 4 operations | $119.26 | -3K | -$389K | 146K | −2.2% | Jul 22, 2026 | Jul 23, 2026 | |||||||||
|
Murry Stefan J.
· Officer
4 operations
-$645K
|
Murry Stefan J. | Officer | 4 operations | $119.26 | -5K | -$645K | 375K | −1.4% | Jul 22, 2026 | Jul 23, 2026 | |||||||||
|
Chang Hung-Lun (fred)
· Officer
4 operations
-$558K
|
Chang Hung-Lun (fred) | Officer | 4 operations | $119.26 | -5K | -$558K | 281K | – | Jul 22, 2026 | Jul 23, 2026 | |||||||||
|
Lin Chih-Hsiang (thompson)
· Director
4 operations
-$1.9M
|
Lin Chih-Hsiang (thompson) | Director | 4 operations | $119.26 | -16K | -$1.9M | 1.3M | −1.2% | Jul 22, 2026 | Jul 23, 2026 | |||||||||
|
Yeh Shu-Hua (joshua)
· Officer
4 operations
-$562K
|
Yeh Shu-Hua (joshua) | Officer | 4 operations | $119.26 | -5K | -$562K | 388K | −1.2% | Jul 22, 2026 | Jul 23, 2026 | |||||||||
|
Yeh Shu-Hua (joshua)
· Officer
Sell
−$154K
|
Yeh Shu-Hua (joshua) | Officer | Sell | $120.02 | −1K | −$154K | 393K | −0.3% | Jul 21, 2026 | Jul 23, 2026 | |||||||||
|
Murry Stefan J.
· Officer
Sell
−$488K
|
Murry Stefan J. | Officer | Sell | $122.09 | −4K | −$488K | 381K | −1.0% | Jul 10, 2026 | Jul 14, 2026 | |||||||||
|
Yeh Shu-Hua (joshua)
· Officer
Sell
−$1.0M
|
Yeh Shu-Hua (joshua) | Officer | Sell | $171.89 | −6K | −$1.0M | 394K | – | Jun 18, 2026 | Jun 18, 2026 | |||||||||
|
Chang Hung-Lun (fred)
· Officer
Sell
−$6.9M
|
Chang Hung-Lun (fred) | Officer | Sell | $170.60 | −40K | −$6.9M | 286K | – | Jun 17, 2026 | Jun 18, 2026 | |||||||||
|
Yeh Shu-Hua (joshua)
· Officer
Sell
−$4.8M
|
Yeh Shu-Hua (joshua) | Officer | Sell | $166.53 | −29K | −$4.8M | 400K | – | Jun 12, 2026 | Jun 16, 2026 | |||||||||
|
Yeh Shu-Hua (joshua)
· Officer
Tax withholding or exercise payment (F)
-$4.0M
|
Yeh Shu-Hua (joshua) | Officer | Tax withholding or exercise payment (F) | $172.78 | -23K | -$4.0M | 429K | – | Jun 12, 2026 | Jun 16, 2026 | |||||||||
|
Murry Stefan J.
· CFO
Sell
−$5.5M
|
Murry Stefan J. | CFO | Sell | $166.53 | −33K | −$5.5M | 385K | – | Jun 12, 2026 | Jun 16, 2026 | |||||||||
|
Murry Stefan J.
· CFO
Tax withholding or exercise payment (F)
-$5.2M
|
Murry Stefan J. | CFO | Tax withholding or exercise payment (F) | $172.78 | -30K | -$5.2M | 418K | – | Jun 12, 2026 | Jun 16, 2026 | |||||||||
|
Lin Chih-Hsiang (thompson)
· Director
Sell
−$9.8M
|
Lin Chih-Hsiang (thompson) | Director | Sell | $166.53 | −59K | −$9.8M | 1.3M | – | Jun 12, 2026 | Jun 16, 2026 | |||||||||
|
Lin Chih-Hsiang (thompson)
· Director
Tax withholding or exercise payment (F)
-$15M
|
Lin Chih-Hsiang (thompson) | Director | Tax withholding or exercise payment (F) | $172.78 | -87K | -$15M | 1.4M | – | Jun 12, 2026 | Jun 16, 2026 | |||||||||
N
M
A
M
G
A
380 reporting institutions disclosed AAOI position changes in the Q1 2026 snapshot.
For each manager, WhoBought compares accepted consecutive 13F share counts. Share change is current shares minus prior shares. Estimated dollar change is that signed share change multiplied by the split-adjusted quarter-mean close. The activity table on this page uses Q1 2026.
An investor crossing 5% of a share class generally files Schedule 13D for activist intent or Schedule 13G for a passive position. The technical form names appear here rather than in the activity rows.
Ownership and institutional activity come from SEC Form 13F filings. Insider activity comes from SEC Form 4, and large-shareholder activity from SEC Schedules 13D and 13G. FMP supplies price data only. Company logos use the local verified Parqet cache with one shared fallback.
Form 13F is a quarterly disclosure and is normally filed after the quarter ends. Every ownership and activity value therefore names its represented period; it is not presented as a live position.
A muted dash marks a missing table value. It means the filing omitted the value, comparable data is unavailable, or no prior position exists for comparison.