Plustick Management LLC
· New
Change
+500K
Date
Q1 2026
AT
| Investor | Type | Est. change | Change | Δ Own | Date | ||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
|
Plustick Management LLC
· New
Change
+500K
Date
Q1 2026
|
Plustick Management LLC | New· Q1 2026 | – | +500K | – | Q1 2026 | |||||
|
Jefferies Financial Group Inc.
· Exited
Change
−455K
Δ Own
−100.0%
Date
Q1 2026
|
Jefferies Financial Group Inc. | Exited· Q1 2026 | – | −455K | −100.0% | Q1 2026 | |||||
|
Marshall Wace, LLP
· Exited
Change
−291K
Δ Own
−100.0%
Date
Q1 2026
|
Marshall Wace, LLP | Exited· Q1 2026 | – | −291K | −100.0% | Q1 2026 | |||||
|
Jane Street Group, LLC
· Added
Change
+262K
Date
Q1 2026
|
Jane Street Group, LLC | Added· Q1 2026 | – | +262K | – | Q1 2026 | |||||
|
Potrero Capital Research LLC
· New
Change
+230K
Date
Q1 2026
|
Potrero Capital Research LLC | New· Q1 2026 | – | +230K | – | Q1 2026 | |||||
|
Dg Capital Management, LLC
· Added
Change
+147K
Date
Q1 2026
|
Dg Capital Management, LLC | Added· Q1 2026 | – | +147K | – | Q1 2026 | |||||
|
Panoramic Capital, LLC
· New
Change
+135K
Date
Q1 2026
|
Panoramic Capital, LLC | New· Q1 2026 | – | +135K | – | Q1 2026 | |||||
|
Millennium Management LLC
· Reduced
Change
−132K
Date
Q1 2026
|
Millennium Management LLC | Reduced· Q1 2026 | – | −132K | – | Q1 2026 | |||||
|
Hrt Financial LP
· Added
Change
+132K
Date
Q1 2026
|
Hrt Financial LP | Added· Q1 2026 | – | +132K | – | Q1 2026 | |||||
|
Centerbook Partners LP
· New
Change
+128K
Date
Q1 2026
|
Centerbook Partners LP | New· Q1 2026 | – | +128K | – | Q1 2026 | |||||
|
Tudor Investment Corp Et Al
· Exited
Change
−125K
Δ Own
−100.0%
Date
Q1 2026
|
Tudor Investment Corp Et Al | Exited· Q1 2026 | – | −125K | −100.0% | Q1 2026 | |||||
|
Qube Research & Technologies Ltd
· Exited
Change
−125K
Δ Own
−100.0%
Date
Q1 2026
|
Qube Research & Technologies Ltd | Exited· Q1 2026 | – | −125K | −100.0% | Q1 2026 | |||||
|
Citigroup Inc
· Added
Change
+119K
Date
Q1 2026
|
Citigroup Inc | Added· Q1 2026 | – | +119K | – | Q1 2026 | |||||
|
Ardsley Advisory Partners LP
· New
Change
+110K
Date
Q1 2026
|
Ardsley Advisory Partners LP | New· Q1 2026 | – | +110K | – | Q1 2026 | |||||
|
Man Group PLC
· Exited
Change
−100K
Δ Own
−100.0%
Date
Q1 2026
|
Man Group PLC | Exited· Q1 2026 | – | −100K | −100.0% | Q1 2026 | |||||
| Insider | Title | Type | Price | Qty | Value | Owned | ΔOwn | Trade date | Filed date | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
Marquez Elena
· Officer
Tax withholding or exercise payment (F)
-$23K
|
Marquez Elena | Officer | Tax withholding or exercise payment (F) | $100.96 | -231 | -$23K | 18K | −1.3% | Jul 13, 2026 | Jul 14, 2026 | |||||||||
|
Guttman-McCabe Christopher
· Officer
Tax withholding or exercise payment (F)
-$153K
|
Guttman-McCabe Christopher | Officer | Tax withholding or exercise payment (F) | $100.96 | -2K | -$153K | 76K | −1.9% | Jul 13, 2026 | Jul 14, 2026 | |||||||||
|
Lang Scott A.
· Director
Sell
−$14K
|
Lang Scott A. | Director | Sell | $80.25 | −170 | −$14K | 77K | −0.2% | Jun 18, 2026 | Jun 22, 2026 | |||||||||
|
Marquez Elena
· CFO
Sell
−$341K
|
Marquez Elena | CFO | Sell | $79.50 | −4K | −$341K | 18K | – | Jun 17, 2026 | Jun 18, 2026 | |||||||||
|
Marquez Elena
· CFO
2 operations
0
|
Marquez Elena | CFO | 2 operations | $40.00 | 0 | – | 2K | – | Jun 17, 2026 | Jun 18, 2026 | |||||||||
|
Yazdi Mahvash
· Director
Sell
−$560K
|
Yazdi Mahvash | Director | Sell | $80.00 | −7K | −$560K | 19K | – | Jun 16, 2026 | Jun 17, 2026 | |||||||||
|
Guttman-McCabe Christopher
· Officer
4 operations
−$7.5M
|
Guttman-McCabe Christopher | Officer | 4 operations | $81.32–$84.29 | −91K | −$7.5M | 78K | – | Jun 15, 2026 | Jun 17, 2026 | |||||||||
|
Guttman-McCabe Christopher
· Officer
12 operations
0
|
Guttman-McCabe Christopher | Officer | 12 operations | $25.75–$49.39 | 0 | – | 0 | – | Jun 15, 2026 | Jun 17, 2026 | |||||||||
|
Ashe Gena L.
· Officer
2 operations
−$1.4M
|
Ashe Gena L. | Officer | 2 operations | $81.04–$82.14 | −18K | −$1.4M | 10K | – | Jun 15, 2026 | Jun 17, 2026 | |||||||||
|
Ashe Gena L.
· Officer
4 operations
0
|
Ashe Gena L. | Officer | 4 operations | $34.96–$49.39 | 0 | – | 0 | – | Jun 15, 2026 | Jun 17, 2026 | |||||||||
|
Ashe Gena L.
· Officer
2 operations
-$1.3M
|
Ashe Gena L. | Officer | 2 operations | $82.50 | -16K | -$1.3M | 27K | – | Jun 15, 2026 | Jun 17, 2026 | |||||||||
|
Lang Scott A.
· Director
4 operations
0
|
Lang Scott A. | Director | 4 operations | $30.99–$34.96 | 0 | – | 149K | – | Jun 15, 2026 | Jun 17, 2026 | |||||||||
|
Lang Scott A.
· Director
2 operations
-$7.3M
|
Lang Scott A. | Director | 2 operations | $82.50 | -88K | -$7.3M | 77K | – | Jun 15, 2026 | Jun 17, 2026 | |||||||||
|
Fleischhauer Mark
· Director
Sell
−$279K
|
Fleischhauer Mark | Director | Sell | $79.83 | −4K | −$279K | 13K | – | Jun 15, 2026 | Jun 17, 2026 | |||||||||
|
Ashe Gena L.
· Officer
Tax withholding or exercise payment (F)
-$150K
|
Ashe Gena L. | Officer | Tax withholding or exercise payment (F) | $60.00 | -3K | -$150K | 14K | – | May 22, 2026 | May 26, 2026 | |||||||||
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126 reporting institutions disclosed ATEX 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.