Two Sigma Investments, LP
· Added
Change
+535K
Δ Own
+97.9%
Date
Q1 2026
AR
| Investor | Type | Est. change | Change | Δ Own | Date | ||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
|
Two Sigma Investments, LP
· Added
Change
+535K
Δ Own
+97.9%
Date
Q1 2026
|
Two Sigma Investments, LP | Added· Q1 2026 | – | +535K | +97.9% | Q1 2026 | |||||
|
Two Sigma Advisers, LP
· Exited
Change
−511K
Δ Own
−100.0%
Date
Q1 2026
|
Two Sigma Advisers, LP | Exited· Q1 2026 | – | −511K | −100.0% | Q1 2026 | |||||
|
Jane Street Group, LLC
· Reduced
Change
−399K
Date
Q1 2026
|
Jane Street Group, LLC | Reduced· Q1 2026 | – | −399K | – | Q1 2026 | |||||
|
Amova Asset Management Americas, Inc.
· Added
Change
+262K
Date
Q1 2026
|
Amova Asset Management Americas, Inc. | Added· Q1 2026 | – | +262K | – | Q1 2026 | |||||
|
Sumitomo Mitsui Trust Group, Inc.
· Added
Change
+262K
Date
Q1 2026
|
Sumitomo Mitsui Trust Group, Inc. | Added· Q1 2026 | – | +262K | – | Q1 2026 | |||||
|
Heartland Advisors Inc
· New
Change
+256K
Date
Q1 2026
|
Heartland Advisors Inc | New· Q1 2026 | – | +256K | – | Q1 2026 | |||||
|
UBS Group AG
· Added
Change
+230K
Date
Q1 2026
|
UBS Group AG | Added· Q1 2026 | – | +230K | – | Q1 2026 | |||||
|
Dimensional
· Reduced
Change
−202K
Date
Q1 2026
|
Dimensional | Reduced· Q1 2026 | – | −202K | – | Q1 2026 | |||||
|
Goldman Sachs Group Inc
· Reduced
Change
−193K
Date
Q1 2026
|
Goldman Sachs Group Inc | Reduced· Q1 2026 | – | −193K | – | Q1 2026 | |||||
|
Millennium Management LLC
· Added
Change
+174K
Date
Q1 2026
|
Millennium Management LLC | Added· Q1 2026 | – | +174K | – | Q1 2026 | |||||
|
Vanguard
· Added
Change
+174K
Date
Q1 2026
|
Vanguard | Added· Q1 2026 | – | +174K | – | Q1 2026 | |||||
|
Ark Investment Management LLC
· Added
Change
+158K
Δ Own
+6.1%
Date
Q1 2026
|
Ark Investment Management LLC | Added· Q1 2026 | – | +158K | +6.1% | Q1 2026 | |||||
|
Point72 Asset Management, L.P.
· Reduced
Change
−158K
Δ Own
−71.3%
Date
Q1 2026
|
Point72 Asset Management, L.P. | Reduced· Q1 2026 | – | −158K | −71.3% | Q1 2026 | |||||
|
D. E. Shaw & Co., Inc.
· Added
Change
+154K
Δ Own
+157.6%
Date
Q1 2026
|
D. E. Shaw & Co., Inc. | Added· Q1 2026 | – | +154K | +157.6% | Q1 2026 | |||||
|
Acadian Asset Management LLC
· Reduced
Change
−147K
Date
Q1 2026
|
Acadian Asset Management LLC | Reduced· Q1 2026 | – | −147K | – | Q1 2026 | |||||
| Insider | Title | Type | Price | Qty | Value | Owned | ΔOwn | Trade date | Filed date | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
Holmes Edward W.
· Director
Grant (A)
15K
|
Holmes Edward W. | Director | Grant (A) | – | 15K | – | 15K | – | Jun 5, 2026 | Jun 15, 2026 | |||||||||
|
Farrell Peter C.
· Director
Grant (A)
15K
|
Farrell Peter C. | Director | Grant (A) | – | 15K | – | 15K | – | Jun 5, 2026 | Jun 15, 2026 | |||||||||
|
Barlow James F.
· Director
Grant (A)
15K
|
Barlow James F. | Director | Grant (A) | – | 15K | – | 15K | – | Jun 5, 2026 | Jun 15, 2026 | |||||||||
|
Markels John
· Director
Grant (A)
15K
|
Markels John | Director | Grant (A) | – | 15K | – | 15K | – | Jun 5, 2026 | Jun 15, 2026 | |||||||||
|
Slaoui Moncef
· Director
Grant (A)
15K
|
Slaoui Moncef | Director | Grant (A) | – | 15K | – | 15K | – | Jun 5, 2026 | Jun 15, 2026 | |||||||||
|
Marquet Magda
· Director
Grant (A)
15K
|
Marquet Magda | Director | Grant (A) | – | 15K | – | 15K | – | Jun 5, 2026 | Jun 15, 2026 | |||||||||
|
Marantz Jing L.
· Director
Grant (A)
15K
|
Marantz Jing L. | Director | Grant (A) | – | 15K | – | 15K | – | Jun 5, 2026 | Jun 15, 2026 | |||||||||
|
Mulroy Dennis
· CFO
Grant (A)
100K
|
Mulroy Dennis | CFO | Grant (A) | – | 100K | – | 100K | – | May 1, 2026 | May 7, 2026 | |||||||||
|
Roberts Joseph
· Officer
Grant (A)
10K
|
Roberts Joseph | Officer | Grant (A) | – | 10K | – | 10K | – | Dec 17, 2025 | Dec 19, 2025 | |||||||||
|
Chivukula Pad
· Officer
Grant (A)
54K
|
Chivukula Pad | Officer | Grant (A) | – | 54K | – | 54K | – | Dec 17, 2025 | Dec 19, 2025 | |||||||||
|
Payne Joseph E.
· Director, Officer
Grant (A)
175K
|
Payne Joseph E. | Director, Officer | Grant (A) | – | 175K | – | 175K | – | Dec 17, 2025 | Dec 19, 2025 | |||||||||
|
Kurata Lance
· Officer
Grant (A)
54K
|
Kurata Lance | Officer | Grant (A) | – | 54K | – | 54K | – | Dec 17, 2025 | Dec 19, 2025 | |||||||||
|
Sassine Andy
· Director, Officer
Buy
+$21K
|
Sassine Andy | Director, Officer | Buy | $16.56 | +1K | +$21K | 222K | – | Aug 15, 2025 | Aug 19, 2025 | |||||||||
N
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132 reporting institutions disclosed ARCT 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.