Ecor1 Capital, LLC
· Exited
Change
−2.6M
Δ Own
−100.0%
Date
Q1 2026
AQ
| Investor | Type | Est. change | Change | Δ Own | Date | ||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
|
Ecor1 Capital, LLC
· Exited
Change
−2.6M
Δ Own
−100.0%
Date
Q1 2026
|
Ecor1 Capital, LLC | Exited· Q1 2026 | – | −2.6M | −100.0% | Q1 2026 | |||||
|
Balyasny Asset Management L.P.
· Added
Change
+1.9M
Date
Q1 2026
|
Balyasny Asset Management L.P. | Added· Q1 2026 | – | +1.9M | – | Q1 2026 | |||||
|
Millennium Management LLC
· Reduced
Change
−1.5M
Date
Q1 2026
|
Millennium Management LLC | Reduced· Q1 2026 | – | −1.5M | – | Q1 2026 | |||||
|
Bank of America Corp
· Added
Change
+1.2M
Date
Q1 2026
|
Bank of America Corp | Added· Q1 2026 | – | +1.2M | – | Q1 2026 | |||||
|
Rtw Investments, LP
· Added
Change
+1.2M
Date
Q1 2026
|
Rtw Investments, LP | Added· Q1 2026 | – | +1.2M | – | Q1 2026 | |||||
|
Hrt Financial LP
· Exited
Change
−995K
Δ Own
−100.0%
Date
Q1 2026
|
Hrt Financial LP | Exited· Q1 2026 | – | −995K | −100.0% | Q1 2026 | |||||
|
Sio Capital Management, LLC
· Added
Change
+930K
Date
Q1 2026
|
Sio Capital Management, LLC | Added· Q1 2026 | – | +930K | – | Q1 2026 | |||||
|
D. E. Shaw & Co., Inc.
· Reduced
Change
−923K
Δ Own
−98.1%
Date
Q1 2026
|
D. E. Shaw & Co., Inc. | Reduced· Q1 2026 | – | −923K | −98.1% | Q1 2026 | |||||
|
Federated Hermes, Inc.
· Added
Change
+908K
Date
Q1 2026
|
Federated Hermes, Inc. | Added· Q1 2026 | – | +908K | – | Q1 2026 | |||||
|
Blue Owl Capital Holdings LP
· Added
Change
+823K
Date
Q1 2026
|
Blue Owl Capital Holdings LP | Added· Q1 2026 | – | +823K | – | Q1 2026 | |||||
|
Aberdeen Group PLC
· Exited
Change
−809K
Δ Own
−100.0%
Date
Q1 2026
|
Aberdeen Group PLC | Exited· Q1 2026 | – | −809K | −100.0% | Q1 2026 | |||||
|
Two Sigma Investments, LP
· Added
Change
+758K
Δ Own
+199.0%
Date
Q1 2026
|
Two Sigma Investments, LP | Added· Q1 2026 | – | +758K | +199.0% | Q1 2026 | |||||
|
Perceptive Advisors LLC
· Exited
Change
−747K
Δ Own
−100.0%
Date
Q1 2026
|
Perceptive Advisors LLC | Exited· Q1 2026 | – | −747K | −100.0% | Q1 2026 | |||||
|
Propel Bio Management, LLC
· New
Change
+711K
Date
Q1 2026
|
Propel Bio Management, LLC | New· Q1 2026 | – | +711K | – | Q1 2026 | |||||
|
Trexquant Investment LP
· Exited
Change
−523K
Δ Own
−100.0%
Date
Q1 2026
|
Trexquant Investment LP | Exited· Q1 2026 | – | −523K | −100.0% | Q1 2026 | |||||
| Insider | Title | Type | Price | Qty | Value | Owned | ΔOwn | Trade date | Filed date | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
Barber Daniel
· Officer
Sell
−$82K
|
Barber Daniel | Officer | Sell | $4.00 | −20K | −$82K | 611K | −3.2% | Jul 16, 2026 | Jul 17, 2026 | |||||||||
|
Barber Daniel
· Officer
Sell
−$19K
|
Barber Daniel | Officer | Sell | $4.03 | −5K | −$19K | 631K | −0.7% | Jul 15, 2026 | Jul 17, 2026 | |||||||||
|
Krop Julie
· Director
Sell
−$125K
|
Krop Julie | Director | Sell | $5.02 | −25K | −$125K | 0 | −100.0% | Jun 23, 2026 | Jun 24, 2026 | |||||||||
|
Krop Julie
· Director
2 operations
0
|
Krop Julie | Director | 2 operations | $0.71 | 0 | – | 0 | – | Jun 23, 2026 | Jun 24, 2026 | |||||||||
|
Barber Daniel
· Officer
Sell
−$104K
|
Barber Daniel | Officer | Sell | $4.16 | −25K | −$104K | 636K | – | Jun 15, 2026 | Jun 16, 2026 | |||||||||
|
Morris Timothy E.
· Director
Grant (A)
50K
|
Morris Timothy E. | Director | Grant (A) | – | 50K | – | 50K | – | Jun 10, 2026 | Jun 12, 2026 | |||||||||
|
Krop Julie
· Director
Grant (A)
50K
|
Krop Julie | Director | Grant (A) | – | 50K | – | 50K | – | Jun 10, 2026 | Jun 12, 2026 | |||||||||
|
Jenkins Abigail L.
· Director
Grant (A)
-50K
|
Jenkins Abigail L. | Director | Grant (A) | – | -50K | – | 50K | – | Jun 10, 2026 | Jun 12, 2026 | |||||||||
|
Cochran John
· Director
Grant (A)
50K
|
Cochran John | Director | Grant (A) | – | 50K | – | 50K | – | Jun 10, 2026 | Jun 12, 2026 | |||||||||
|
Brown Gregory B.
· Director
Grant (A)
50K
|
Brown Gregory B. | Director | Grant (A) | – | 50K | – | 50K | – | Jun 10, 2026 | Jun 12, 2026 | |||||||||
|
Taglietti Marco
· Director
Grant (A)
50K
|
Taglietti Marco | Director | Grant (A) | – | 50K | – | 50K | – | Jun 10, 2026 | Jun 12, 2026 | |||||||||
|
Korczynski Sherry
· Officer
Tax withholding or exercise payment (F)
-3K
|
Korczynski Sherry | Officer | Tax withholding or exercise payment (F) | – | -3K | – | 238K | – | Jun 8, 2026 | Jun 9, 2026 | |||||||||
|
Zalewski Thomas A.
· Officer
2 operations
175K
|
Zalewski Thomas A. | Officer | 2 operations | – | 175K | – | 75K | – | May 18, 2026 | May 19, 2026 | |||||||||
|
Barber Daniel
· Officer
Sell
−$35K
|
Barber Daniel | Officer | Sell | $4.29 | −8K | −$35K | 661K | – | May 15, 2026 | May 18, 2026 | |||||||||
|
Cioffi Melina
· Officer
Tax withholding or exercise payment (F)
-$7K
|
Cioffi Melina | Officer | Tax withholding or exercise payment (F) | $4.17 | -2K | -$7K | 273K | – | May 15, 2026 | May 18, 2026 | |||||||||
N
A
M
G
A
A
192 reporting institutions disclosed AQST 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.