Vanguard
· New
Change
+404K
Date
Q1 2026
AT
| Investor | Type | Est. change | Change | Δ Own | Date | ||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
|
Vanguard
· New
Change
+404K
Date
Q1 2026
|
Vanguard | New· Q1 2026 | – | +404K | – | Q1 2026 | |||||
|
Ameriprise Financial Inc
· New
Change
+255K
Date
Q1 2026
|
Ameriprise Financial Inc | New· Q1 2026 | – | +255K | – | Q1 2026 | |||||
|
BlackRock
· New
Change
+133K
Date
Q1 2026
|
BlackRock | New· Q1 2026 | – | +133K | – | Q1 2026 | |||||
|
Change
+109K
Date
Q1 2026
|
Renaissance Technologies LLC | New· Q1 2026 | – | +109K | – | Q1 2026 | |||||
|
Geode
· New
Change
+97K
Date
Q1 2026
|
Geode | New· Q1 2026 | – | +97K | – | Q1 2026 | |||||
|
UBS Group AG
· New
Change
+92K
Date
Q1 2026
|
UBS Group AG | New· Q1 2026 | – | +92K | – | Q1 2026 | |||||
|
Millennium Management LLC
· New
Change
+67K
Date
Q1 2026
|
Millennium Management LLC | New· Q1 2026 | – | +67K | – | Q1 2026 | |||||
|
State Street
· New
Change
+40K
Date
Q1 2026
|
State Street | New· Q1 2026 | – | +40K | – | Q1 2026 | |||||
|
Marshall Wace, LLP
· Exited
Change
−28K
Δ Own
−100.0%
Date
Q1 2026
|
Marshall Wace, LLP | Exited· Q1 2026 | – | −28K | −100.0% | Q1 2026 | |||||
|
Northern Trust
· New
Change
+19K
Date
Q1 2026
|
Northern Trust | New· Q1 2026 | – | +19K | – | Q1 2026 | |||||
|
Morgan Stanley
· New
Change
+16K
Date
Q1 2026
|
Morgan Stanley | New· Q1 2026 | – | +16K | – | Q1 2026 | |||||
|
Jones Financial Companies Lllp
· New
Change
+2K
Date
Q1 2026
|
Jones Financial Companies Lllp | New· Q1 2026 | – | +2K | – | Q1 2026 | |||||
|
Tower Research Capital LLC (trc)
· New
Change
+863
Date
Q1 2026
|
Tower Research Capital LLC (trc) | New· Q1 2026 | – | +863 | – | Q1 2026 | |||||
|
Royal Bank of Canada
· New
Change
+644
Date
Q1 2026
|
Royal Bank of Canada | New· Q1 2026 | – | +644 | – | Q1 2026 | |||||
|
Group One Trading LLC
· New
Change
+609
Date
Q1 2026
|
Group One Trading LLC | New· Q1 2026 | – | +609 | – | Q1 2026 | |||||
| Insider | Title | Type | Price | Qty | Value | Owned | ΔOwn | Trade date | Filed date | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
Steinhart Richard I.
· Director
Grant (A)
10K
|
Steinhart Richard I. | Director | Grant (A) | – | 10K | – | 10K | – | May 12, 2026 | May 14, 2026 | |||||||||
|
Chen Shu-Chih
· Director
Grant (A)
10K
|
Chen Shu-Chih | Director | Grant (A) | – | 10K | – | 10K | – | May 12, 2026 | May 14, 2026 | |||||||||
|
Remmel H. Lawrence
· Director
Grant (A)
10K
|
Remmel H. Lawrence | Director | Grant (A) | – | 10K | – | 11K | – | May 12, 2026 | May 14, 2026 | |||||||||
|
Finn Jonathan
· Director
Grant (A)
10K
|
Finn Jonathan | Director | Grant (A) | – | 10K | – | 12K | – | May 12, 2026 | May 14, 2026 | |||||||||
|
Galli Stephen J.
· Director
Grant (A)
10K
|
Galli Stephen J. | Director | Grant (A) | – | 10K | – | 10K | – | May 12, 2026 | May 14, 2026 | |||||||||
|
Cigler Tessa
· Director
Grant (A)
10K
|
Cigler Tessa | Director | Grant (A) | – | 10K | – | 10K | – | May 12, 2026 | May 14, 2026 | |||||||||
|
Quay Steven C.
· Director, Officer
Grant (A)
65K
|
Quay Steven C. | Director, Officer | Grant (A) | – | 65K | – | 88K | – | Mar 27, 2026 | Mar 31, 2026 | |||||||||
|
Daniel Mark James
· Officer
Grant (A)
63K
|
Daniel Mark James | Officer | Grant (A) | – | 63K | – | 63K | – | Mar 26, 2026 | Mar 30, 2026 | |||||||||
|
Quay Steven C.
· Director, Officer
2 operations
1.3M
|
Quay Steven C. | Director, Officer | 2 operations | $0.60 | 1.3M | – | 950K | – | Jan 20, 2026 | Jan 22, 2026 | |||||||||
|
Daniel Mark James
· Officer
Grant (A)
578K
|
Daniel Mark James | Officer | Grant (A) | – | 578K | – | 578K | – | Oct 14, 2025 | Oct 21, 2025 | |||||||||
U
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32 reporting institutions disclosed ATOS 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.