Castleknight Management LP
· Added
Change
+2.9M
Date
Q1 2026
CY
| Investor | Type | Est. change | Change | Δ Own | Date | ||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
|
Castleknight Management LP
· Added
Change
+2.9M
Date
Q1 2026
|
Castleknight Management LP | Added· Q1 2026 | – | +2.9M | – | Q1 2026 | |||||
|
Two Sigma Advisers, LP
· Exited
Change
−1.9M
Δ Own
−100.0%
Date
Q1 2026
|
Two Sigma Advisers, LP | Exited· Q1 2026 | – | −1.9M | −100.0% | Q1 2026 | |||||
|
Aberdeen Group PLC
· Exited
Change
−1.8M
Δ Own
−100.0%
Date
Q1 2026
|
Aberdeen Group PLC | Exited· Q1 2026 | – | −1.8M | −100.0% | Q1 2026 | |||||
|
Goldman Sachs Group Inc
· Added
Change
+1.2M
Date
Q1 2026
|
Goldman Sachs Group Inc | Added· Q1 2026 | – | +1.2M | – | Q1 2026 | |||||
|
Two Sigma Investments, LP
· Added
Change
+1.0M
Δ Own
+51.2%
Date
Q1 2026
|
Two Sigma Investments, LP | Added· Q1 2026 | – | +1.0M | +51.2% | Q1 2026 | |||||
|
Owl Creek Asset Management, L.P.
· Added
Change
+1.0M
Date
Q1 2026
|
Owl Creek Asset Management, L.P. | Added· Q1 2026 | – | +1.0M | – | Q1 2026 | |||||
|
Carronade Capital Management, LP
· Added
Change
+997K
Date
Q1 2026
|
Carronade Capital Management, LP | Added· Q1 2026 | – | +997K | – | Q1 2026 | |||||
|
JPMorgan Chase & Co
· Reduced
Change
−987K
Date
Q1 2026
|
JPMorgan Chase & Co | Reduced· Q1 2026 | – | −987K | – | Q1 2026 | |||||
|
Whitebox Advisors LLC
· Added
Change
+926K
Date
Q1 2026
|
Whitebox Advisors LLC | Added· Q1 2026 | – | +926K | – | Q1 2026 | |||||
|
Saba Capital Management, L.P.
· Added
Change
+881K
Date
Q1 2026
|
Saba Capital Management, L.P. | Added· Q1 2026 | – | +881K | – | Q1 2026 | |||||
|
Jane Street Group, LLC
· Exited
Change
−773K
Δ Own
−100.0%
Date
Q1 2026
|
Jane Street Group, LLC | Exited· Q1 2026 | – | −773K | −100.0% | Q1 2026 | |||||
|
Eversept Partners, LP
· Added
Change
+733K
Date
Q1 2026
|
Eversept Partners, LP | Added· Q1 2026 | – | +733K | – | Q1 2026 | |||||
|
Citadel Advisors LLC
· Reduced
Change
−628K
Δ Own
−50.4%
Date
Q1 2026
|
Citadel Advisors LLC | Reduced· Q1 2026 | – | −628K | −50.4% | Q1 2026 | |||||
|
Allianz Asset Management GMBH
· Added
Change
+451K
Date
Q1 2026
|
Allianz Asset Management GMBH | Added· Q1 2026 | – | +451K | – | Q1 2026 | |||||
|
Assenagon Asset Management S.A.
· Reduced
Change
−440K
Date
Q1 2026
|
Assenagon Asset Management S.A. | Reduced· Q1 2026 | – | −440K | – | Q1 2026 | |||||
| Insider | Title | Type | Price | Qty | Value | Owned | ΔOwn | Trade date | Filed date | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
Krishnan K. Ranga
· Director
2 operations
-1
|
Krishnan K. Ranga | Director | 2 operations | – | -1 | – | 56K | – | Jun 30, 2026 | Jun 30, 2026 | |||||||||
|
Rice David V
· Officer
3 operations
90K
|
Rice David V | Officer | 3 operations | – | 90K | – | 30K | – | Jun 1, 2026 | Jun 1, 2026 | |||||||||
|
Krishnan K. Ranga
· Director
2 operations
0
|
Krishnan K. Ranga | Director | 2 operations | – | 0 | – | 228K | – | Apr 22, 2026 | Apr 22, 2026 | |||||||||
|
Smith Wayne T.
· Director
Gift (G)
-19K
|
Smith Wayne T. | Director | Gift (G) | – | -19K | – | 5.2M | – | Mar 2, 2026 | Mar 3, 2026 | |||||||||
|
Stockton Kevin A.
· Officer
2 operations
0
|
Stockton Kevin A. | Officer | 2 operations | – | 0 | – | 0 | – | Mar 1, 2026 | Mar 3, 2026 | |||||||||
|
Stockton Kevin A.
· Officer
Tax withholding or exercise payment (F)
-$123K
|
Stockton Kevin A. | Officer | Tax withholding or exercise payment (F) | $3.46 | -36K | -$123K | 208K | – | Mar 1, 2026 | Mar 3, 2026 | |||||||||
|
Stockton Kevin A.
· Officer
3 operations
120K
|
Stockton Kevin A. | Officer | 3 operations | – | 120K | – | 30K | – | Mar 1, 2026 | Mar 3, 2026 | |||||||||
|
Posey Phillip A.
· Officer
Tax withholding or exercise payment (F)
-$4K
|
Posey Phillip A. | Officer | Tax withholding or exercise payment (F) | $3.46 | -1K | -$4K | 52K | – | Mar 1, 2026 | Mar 3, 2026 | |||||||||
|
Posey Phillip A.
· Officer
3 operations
75K
|
Posey Phillip A. | Officer | 3 operations | – | 75K | – | 25K | – | Mar 1, 2026 | Mar 3, 2026 | |||||||||
|
Pitt Justin D.
· Officer
2 operations
0
|
Pitt Justin D. | Officer | 2 operations | – | 0 | – | 0 | – | Mar 1, 2026 | Mar 3, 2026 | |||||||||
|
Pitt Justin D.
· Officer
Tax withholding or exercise payment (F)
-$86K
|
Pitt Justin D. | Officer | Tax withholding or exercise payment (F) | $3.46 | -25K | -$86K | 288K | – | Mar 1, 2026 | Mar 3, 2026 | |||||||||
|
Pitt Justin D.
· Officer
3 operations
160K
|
Pitt Justin D. | Officer | 3 operations | – | 160K | – | 40K | – | Mar 1, 2026 | Mar 3, 2026 | |||||||||
|
Johnson Jason K.
· Officer
2 operations
0
|
Johnson Jason K. | Officer | 2 operations | – | 0 | – | 0 | – | Mar 1, 2026 | Mar 3, 2026 | |||||||||
|
Johnson Jason K.
· Officer
Tax withholding or exercise payment (F)
-$82K
|
Johnson Jason K. | Officer | Tax withholding or exercise payment (F) | $3.46 | -24K | -$82K | 268K | – | Mar 1, 2026 | Mar 3, 2026 | |||||||||
|
Johnson Jason K.
· Officer
3 operations
360K
|
Johnson Jason K. | Officer | 3 operations | – | 360K | – | 180K | – | Mar 1, 2026 | Mar 3, 2026 | |||||||||
N
A
M
G
A
A
156 reporting institutions disclosed CYH 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.