William Blair Investment Management, LLC
· Reduced
Change
−344K
Date
Q1 2026
CH
| Investor | Type | Est. change | Change | Δ Own | Date | ||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
|
William Blair Investment Management, LLC
· Reduced
Change
−344K
Date
Q1 2026
|
William Blair Investment Management, LLC | Reduced· Q1 2026 | – | −344K | – | Q1 2026 | |||||
|
Kayne Anderson Rudnick Investment Management LLC
· Reduced
Change
−280K
Date
Q1 2026
|
Kayne Anderson Rudnick Investment Management LLC | Reduced· Q1 2026 | – | −280K | – | Q1 2026 | |||||
|
Two Sigma Investments, LP
· Added
Change
+192K
Δ Own
+174.4%
Date
Q1 2026
|
Two Sigma Investments, LP | Added· Q1 2026 | – | +192K | +174.4% | Q1 2026 | |||||
|
Norges
· Exited
Change
−178K
Δ Own
−100.0%
Date
Q1 2026
|
Norges | Exited· Q1 2026 | – | −178K | −100.0% | Q1 2026 | |||||
|
Neuberger Berman Group LLC
· Reduced
Change
−171K
Date
Q1 2026
|
Neuberger Berman Group LLC | Reduced· Q1 2026 | – | −171K | – | Q1 2026 | |||||
|
Ameriprise Financial Inc
· Reduced
Change
−108K
Date
Q1 2026
|
Ameriprise Financial Inc | Reduced· Q1 2026 | – | −108K | – | Q1 2026 | |||||
|
Citadel Advisors LLC
· Added
Change
+96K
Δ Own
+518.3%
Date
Q1 2026
|
Citadel Advisors LLC | Added· Q1 2026 | – | +96K | +518.3% | Q1 2026 | |||||
|
Nomura Holdings Inc
· New
Change
+90K
Date
Q1 2026
|
Nomura Holdings Inc | New· Q1 2026 | – | +90K | – | Q1 2026 | |||||
|
AQR Capital Management LLC
· Added
Change
+90K
Date
Q1 2026
|
AQR Capital Management LLC | Added· Q1 2026 | – | +90K | – | Q1 2026 | |||||
|
Vanguard
· Added
Change
+89K
Date
Q1 2026
|
Vanguard | Added· Q1 2026 | – | +89K | – | Q1 2026 | |||||
|
Epoch Investment Partners, Inc.
· Reduced
Change
−72K
Date
Q1 2026
|
Epoch Investment Partners, Inc. | Reduced· Q1 2026 | – | −72K | – | Q1 2026 | |||||
|
River Road Asset Management, LLC
· New
Change
+72K
Date
Q1 2026
|
River Road Asset Management, LLC | New· Q1 2026 | – | +72K | – | Q1 2026 | |||||
|
Acadian Asset Management LLC
· Added
Change
+71K
Date
Q1 2026
|
Acadian Asset Management LLC | Added· Q1 2026 | – | +71K | – | Q1 2026 | |||||
|
Impax Asset Management Group PLC
· Reduced
Change
−68K
Date
Q1 2026
|
Impax Asset Management Group PLC | Reduced· Q1 2026 | – | −68K | – | Q1 2026 | |||||
|
Qube Research & Technologies Ltd
· Reduced
Change
−62K
Date
Q1 2026
|
Qube Research & Technologies Ltd | Reduced· Q1 2026 | – | −62K | – | Q1 2026 | |||||
| Insider | Title | Type | Price | Qty | Value | Owned | ΔOwn | Trade date | Filed date | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
Lindell Andrea R.
· Director
Sell
−$603K
|
Lindell Andrea R. | Director | Sell | $447.33 | −1K | −$603K | 5K | – | Jun 9, 2026 | Jun 10, 2026 | |||||||||
|
Walsh George J. III
· Director
Sell
−$219K
|
Walsh George J. III | Director | Sell | $437.83 | −500 | −$219K | 3K | – | May 29, 2026 | May 29, 2026 | |||||||||
|
Walsh George J. III
· Director
Grant (A)
$170K
|
Walsh George J. III | Director | Grant (A) | $440.77 | 386 | $170K | 4K | – | May 18, 2026 | May 19, 2026 | |||||||||
|
Mount John Meredith Jr
· Director
Grant (A)
$170K
|
Mount John Meredith Jr | Director | Grant (A) | $440.77 | 386 | $170K | 1K | – | May 18, 2026 | May 19, 2026 | |||||||||
|
McCarthy Eileen P.
· Director
Grant (A)
$170K
|
McCarthy Eileen P. | Director | Grant (A) | $440.77 | 386 | $170K | 1K | – | May 18, 2026 | May 19, 2026 | |||||||||
|
Lindell Andrea R.
· Director
Grant (A)
$170K
|
Lindell Andrea R. | Director | Grant (A) | $440.77 | 386 | $170K | 6K | – | May 18, 2026 | May 19, 2026 | |||||||||
|
Heaney Christopher J.
· Director
Grant (A)
$170K
|
Heaney Christopher J. | Director | Grant (A) | $440.77 | 386 | $170K | 3K | – | May 18, 2026 | May 19, 2026 | |||||||||
|
Grace Patrick P.
· Director
Grant (A)
$170K
|
Grace Patrick P. | Director | Grant (A) | $440.77 | 386 | $170K | 4K | – | May 18, 2026 | May 19, 2026 | |||||||||
|
Delyons Ron
· Director
Grant (A)
$170K
|
Delyons Ron | Director | Grant (A) | $440.77 | 386 | $170K | 2K | – | May 18, 2026 | May 19, 2026 | |||||||||
|
Grace Patrick P.
· Director
Sell
−$26K
|
Grace Patrick P. | Director | Sell | $425.78 | −60 | −$26K | 3K | – | May 8, 2026 | May 8, 2026 | |||||||||
|
McNamara Kevin J.
· Director
Sell
−$842K
|
McNamara Kevin J. | Director | Sell | $421.13 | −2K | −$842K | 90K | – | May 1, 2026 | May 4, 2026 | |||||||||
|
McNamara Kevin J.
· Director, Officer
Sell
−$554K
|
McNamara Kevin J. | Director, Officer | Sell | $369.37 | −2K | −$554K | 92K | – | Mar 27, 2026 | Mar 30, 2026 | |||||||||
|
McNamara Kevin J.
· Director, Officer
Sell
−$806K
|
McNamara Kevin J. | Director, Officer | Sell | $403.18 | −2K | −$806K | 94K | – | Mar 12, 2026 | Mar 13, 2026 | |||||||||
|
Lee Spencer S.
· Officer
4 operations
-305
|
Lee Spencer S. | Officer | 4 operations | $469.56 | -305 | – | 2K | – | Feb 13, 2026 | Feb 17, 2026 | |||||||||
|
Lee Spencer S.
· Officer
Tax withholding or exercise payment (F)
-$72K
|
Lee Spencer S. | Officer | Tax withholding or exercise payment (F) | $469.56 | -154 | -$72K | 15K | – | Feb 13, 2026 | Feb 17, 2026 | |||||||||
N
A
M
G
A
A
478 reporting institutions disclosed CHE 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.