Rubric Capital Management LP
· Reduced
Change
−637K
Date
Q1 2026
PR
| Investor | Type | Est. change | Change | Δ Own | Date | ||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
|
Rubric Capital Management LP
· Reduced
Change
−637K
Date
Q1 2026
|
Rubric Capital Management LP | Reduced· Q1 2026 | – | −637K | – | Q1 2026 | |||||
|
FMR LLC
· Added
Change
+300K
Δ Own
+245.9%
Date
Q1 2026
|
FMR LLC | Added· Q1 2026 | – | +300K | +245.9% | Q1 2026 | |||||
|
Prudential Financial Inc
· Added
Change
+217K
Date
Q1 2026
|
Prudential Financial Inc | Added· Q1 2026 | – | +217K | – | Q1 2026 | |||||
|
Disciplined Growth Investors Inc
· Reduced
Change
−176K
Date
Q1 2026
|
Disciplined Growth Investors Inc | Reduced· Q1 2026 | – | −176K | – | Q1 2026 | |||||
|
Qube Research & Technologies Ltd
· Added
Change
+134K
Date
Q1 2026
|
Qube Research & Technologies Ltd | Added· Q1 2026 | – | +134K | – | Q1 2026 | |||||
|
Empowered Funds, LLC
· Exited
Change
−113K
Δ Own
−100.0%
Date
Q1 2026
|
Empowered Funds, LLC | Exited· Q1 2026 | – | −113K | −100.0% | Q1 2026 | |||||
|
Vanguard
· Added
Change
+96K
Date
Q1 2026
|
Vanguard | Added· Q1 2026 | – | +96K | – | Q1 2026 | |||||
|
Bridgeway Capital Management, LLC
· Reduced
Change
−92K
Date
Q1 2026
|
Bridgeway Capital Management, LLC | Reduced· Q1 2026 | – | −92K | – | Q1 2026 | |||||
|
Millennium Management LLC
· Reduced
Change
−76K
Date
Q1 2026
|
Millennium Management LLC | Reduced· Q1 2026 | – | −76K | – | Q1 2026 | |||||
|
Marshall Wace, LLP
· New
Change
+68K
Date
Q1 2026
|
Marshall Wace, LLP | New· Q1 2026 | – | +68K | – | Q1 2026 | |||||
|
Informed Momentum Co LLC
· New
Change
+66K
Date
Q1 2026
|
Informed Momentum Co LLC | New· Q1 2026 | – | +66K | – | Q1 2026 | |||||
|
BlackRock
· Added
Change
+59K
Date
Q1 2026
|
BlackRock | Added· Q1 2026 | – | +59K | – | Q1 2026 | |||||
|
Jane Street Group, LLC
· Reduced
Change
−53K
Date
Q1 2026
|
Jane Street Group, LLC | Reduced· Q1 2026 | – | −53K | – | Q1 2026 | |||||
|
Hussman Strategic Advisors, Inc.
· New
Change
+52K
Date
Q1 2026
|
Hussman Strategic Advisors, Inc. | New· Q1 2026 | – | +52K | – | Q1 2026 | |||||
|
Archon Capital Management LLC
· New
Change
+48K
Date
Q1 2026
|
Archon Capital Management LLC | New· Q1 2026 | – | +48K | – | Q1 2026 | |||||
| Insider | Title | Type | Price | Qty | Value | Owned | ΔOwn | Trade date | Filed date | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
Wehrwein Sven
· Director
2 operations
−$155K
|
Wehrwein Sven | Director | 2 operations | $76.91–$78.38 | −2K | −$155K | 33K | – | Jun 2, 2026 | Jun 4, 2026 | |||||||||
|
Krishna Suresh
· Director
Tax withholding or exercise payment (F)
-$89K
|
Krishna Suresh | Director | Tax withholding or exercise payment (F) | $71.36 | -1K | -$89K | 30K | – | May 23, 2026 | May 27, 2026 | |||||||||
|
Schumacher Daniel
· CFO
Tax withholding or exercise payment (F)
-$18K
|
Schumacher Daniel | CFO | Tax withholding or exercise payment (F) | $71.13 | -255 | -$18K | 45K | – | May 20, 2026 | May 22, 2026 | |||||||||
|
Parlange Bernardo
· Officer
2 operations
6K
|
Parlange Bernardo | Officer | 2 operations | – | 6K | – | 4K | – | May 20, 2026 | May 22, 2026 | |||||||||
|
Black Archie C.
· Director
Grant (A)
2K
|
Black Archie C. | Director | Grant (A) | – | 2K | – | 28K | – | May 19, 2026 | May 21, 2026 | |||||||||
|
Chand Sujeet
· Director
Grant (A)
2K
|
Chand Sujeet | Director | Grant (A) | – | 2K | – | 27K | – | May 19, 2026 | May 21, 2026 | |||||||||
|
Chin Moonhie
· Director
Grant (A)
2K
|
Chin Moonhie | Director | Grant (A) | – | 2K | – | 22K | – | May 19, 2026 | May 21, 2026 | |||||||||
|
Gawlick Rainer
· Director
Grant (A)
2K
|
Gawlick Rainer | Director | Grant (A) | – | 2K | – | 46K | – | May 19, 2026 | May 21, 2026 | |||||||||
|
Wehrwein Sven
· Director
Grant (A)
2K
|
Wehrwein Sven | Director | Grant (A) | – | 2K | – | 35K | – | May 19, 2026 | May 21, 2026 | |||||||||
|
Krantz Donald G.
· Director
Grant (A)
2K
|
Krantz Donald G. | Director | Grant (A) | – | 2K | – | 27K | – | May 19, 2026 | May 21, 2026 | |||||||||
|
Kenison Michael R.
· Officer
4 operations
−$1.1M
|
Kenison Michael R. | Officer | 4 operations | $67.58–$70.30 | −16K | −$1.1M | 19K | – | May 12, 2026 | May 13, 2026 | |||||||||
|
Kenison Michael R.
· Officer
6 operations
0
|
Kenison Michael R. | Officer | 6 operations | $33.84–$59.40 | 0 | – | 0 | – | May 12, 2026 | May 13, 2026 | |||||||||
|
Kenison Michael R.
· Officer
Sell
−$522K
|
Kenison Michael R. | Officer | Sell | $70.26 | −7K | −$522K | 27K | – | May 11, 2026 | May 13, 2026 | |||||||||
|
Kenison Michael R.
· Officer
4 operations
0
|
Kenison Michael R. | Officer | 4 operations | $33.52–$33.84 | 0 | – | 4K | – | May 11, 2026 | May 13, 2026 | |||||||||
|
Kenison Michael R.
· Officer
Sell
−$14K
|
Kenison Michael R. | Officer | Sell | $70.00 | −200 | −$14K | 27K | – | May 7, 2026 | May 8, 2026 | |||||||||
N
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218 reporting institutions disclosed PRLB 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.