Stockbridge Partners LLC
· New
+$117M
Change
+1.0M
Date
Q1 2026
AL
| Investor | Type | Est. change | Change | Δ Own | Date | ||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
|
Stockbridge Partners LLC
· New
+$117M
Change
+1.0M
Date
Q1 2026
|
Stockbridge Partners LLC | New· Q1 2026 | +$117M | +1.0M | – | Q1 2026 | |||||
|
First Trust Advisors LP
· Added
+$106M
Change
+932K
Date
Q1 2026
|
First Trust Advisors LP | Added· Q1 2026 | +$106M | +932K | – | Q1 2026 | |||||
|
Captrust Financial Advisors
· Added
+$76M
Change
+665K
Date
Q1 2026
|
Captrust Financial Advisors | Added· Q1 2026 | +$76M | +665K | – | Q1 2026 | |||||
|
Boston Partners
· Added
+$61M
Change
+540K
Date
Q1 2026
|
Boston Partners | Added· Q1 2026 | +$61M | +540K | – | Q1 2026 | |||||
|
Freestone Grove Partners LP
· Added
+$52M
Change
+456K
Date
Q1 2026
|
Freestone Grove Partners LP | Added· Q1 2026 | +$52M | +456K | – | Q1 2026 | |||||
|
Jain Global LLC
· Added
+$39M
Change
+345K
Date
Q1 2026
|
Jain Global LLC | Added· Q1 2026 | +$39M | +345K | – | Q1 2026 | |||||
|
Jones Financial Companies Lllp
· Added
+$36M
Change
+320K
Date
Q1 2026
|
Jones Financial Companies Lllp | Added· Q1 2026 | +$36M | +320K | – | Q1 2026 | |||||
|
Balyasny Asset Management L.P.
· Added
+$34M
Change
+297K
Date
Q1 2026
|
Balyasny Asset Management L.P. | Added· Q1 2026 | +$34M | +297K | – | Q1 2026 | |||||
|
Marshall Wace, LLP
· Added
+$31M
Change
+272K
Date
Q1 2026
|
Marshall Wace, LLP | Added· Q1 2026 | +$31M | +272K | – | Q1 2026 | |||||
|
Geode
· Added
+$28M
Change
+244K
Date
Q1 2026
|
Geode | Added· Q1 2026 | +$28M | +244K | – | Q1 2026 | |||||
|
Citadel Advisors LLC
· Added
+$27M
Change
+241K
Δ Own
+378.4%
Date
Q1 2026
|
Citadel Advisors LLC | Added· Q1 2026 | +$27M | +241K | +378.4% | Q1 2026 | |||||
|
Victory Capital Management Inc
· Added
+$25M
Change
+220K
Date
Q1 2026
|
Victory Capital Management Inc | Added· Q1 2026 | +$25M | +220K | – | Q1 2026 | |||||
|
Cookson Peirce & Co Inc
· New
+$21M
Change
+185K
Date
Q1 2026
|
Cookson Peirce & Co Inc | New· Q1 2026 | +$21M | +185K | – | Q1 2026 | |||||
|
J. Goldman & Co LP
· New
+$21M
Change
+182K
Date
Q1 2026
|
J. Goldman & Co LP | New· Q1 2026 | +$21M | +182K | – | Q1 2026 | |||||
|
Jacobs Levy Equity Management, Inc
· Added
+$16M
Change
+139K
Date
Q1 2026
|
Jacobs Levy Equity Management, Inc | Added· Q1 2026 | +$16M | +139K | – | Q1 2026 | |||||
| Insider | Title | Type | Price | Qty | Value | Owned | ΔOwn | Trade date | Filed date | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
Bohley G. Frederick
· Officer
4 operations
0
|
Bohley G. Frederick | Officer | 4 operations | – | 0 | – | 170 | – | Jun 4, 2026 | Jun 8, 2026 | |||||||||
|
Bohley G. Frederick
· Officer
Tax withholding or exercise payment (F)
-$29K
|
Bohley G. Frederick | Officer | Tax withholding or exercise payment (F) | $118.38 | -242 | -$29K | 113K | – | Jun 4, 2026 | Jun 8, 2026 | |||||||||
|
Everitt David C.
· Director
Grant (A)
73
|
Everitt David C. | Director | Grant (A) | – | 73 | – | 4K | – | May 29, 2026 | Jun 2, 2026 | |||||||||
|
Scroggins Eric C.
· Officer
Grant (A)
13
|
Scroggins Eric C. | Officer | Grant (A) | – | 13 | – | 50 | – | May 29, 2026 | Jun 2, 2026 | |||||||||
|
Graziosi David S.
· Director
Grant (A)
144
|
Graziosi David S. | Director | Grant (A) | – | 144 | – | 668 | – | May 29, 2026 | Jun 2, 2026 | |||||||||
|
Barbour D. Scott
· Director
Grant (A)
3
|
Barbour D. Scott | Director | Grant (A) | – | 3 | – | 3 | – | May 29, 2026 | Jun 2, 2026 | |||||||||
|
Christman Philip J.
· Director
Grant (A)
3
|
Christman Philip J. | Director | Grant (A) | – | 3 | – | 3 | – | May 29, 2026 | Jun 2, 2026 | |||||||||
|
Bohley G. Frederick
· Officer
Grant (A)
39
|
Bohley G. Frederick | Officer | Grant (A) | – | 39 | – | 180 | – | May 29, 2026 | Jun 2, 2026 | |||||||||
|
Perna Gustave
· Director
Grant (A)
3
|
Perna Gustave | Director | Grant (A) | – | 3 | – | 3 | – | May 29, 2026 | Jun 2, 2026 | |||||||||
|
Price Michael Craig
· Officer
Grant (A)
42
|
Price Michael Craig | Officer | Grant (A) | – | 42 | – | 84 | – | May 29, 2026 | Jun 2, 2026 | |||||||||
|
Ostojic Sasha
· Director
Grant (A)
3
|
Ostojic Sasha | Director | Grant (A) | – | 3 | – | 3 | – | May 29, 2026 | Jun 2, 2026 | |||||||||
|
Haznedar Carolann I.
· Director
Grant (A)
59
|
Haznedar Carolann I. | Director | Grant (A) | – | 59 | – | 2K | – | May 29, 2026 | Jun 2, 2026 | |||||||||
|
Mell Scott A.
· Officer
Grant (A)
31
|
Mell Scott A. | Officer | Grant (A) | – | 31 | – | 102 | – | May 29, 2026 | Jun 2, 2026 | |||||||||
|
Altmaier Judy L.
· Director
Grant (A)
57
|
Altmaier Judy L. | Director | Grant (A) | – | 57 | – | 1K | – | May 29, 2026 | Jun 2, 2026 | |||||||||
|
Shivram Krishna
· Director
Grant (A)
3
|
Shivram Krishna | Director | Grant (A) | – | 3 | – | 3 | – | May 29, 2026 | Jun 2, 2026 | |||||||||
N
A
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A
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521 reporting institutions disclosed ALSN 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.