Marshall Wace, LLP
· New
+$27M
Change
+689K
Date
Q1 2026
IC
| Investor | Type | Est. change | Change | Δ Own | Date | ||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
|
Marshall Wace, LLP
· New
+$27M
Change
+689K
Date
Q1 2026
|
Marshall Wace, LLP | New· Q1 2026 | +$27M | +689K | – | Q1 2026 | |||||
|
Millennium Management LLC
· Added
+$13M
Change
+335K
Date
Q1 2026
|
Millennium Management LLC | Added· Q1 2026 | +$13M | +335K | – | Q1 2026 | |||||
|
Driehaus Capital Management LLC
· New
+$12M
Change
+298K
Date
Q1 2026
|
Driehaus Capital Management LLC | New· Q1 2026 | +$12M | +298K | – | Q1 2026 | |||||
|
Two Sigma Investments, LP
· Added
+$11M
Change
+278K
Δ Own
+385.4%
Date
Q1 2026
|
Two Sigma Investments, LP | Added· Q1 2026 | +$11M | +278K | +385.4% | Q1 2026 | |||||
|
Axiom Investors LLC
· New
+$10M
Change
+266K
Date
Q1 2026
|
Axiom Investors LLC | New· Q1 2026 | +$10M | +266K | – | Q1 2026 | |||||
|
Citadel Advisors LLC
· Added
+$7.8M
Change
+201K
Δ Own
+815.5%
Date
Q1 2026
|
Citadel Advisors LLC | Added· Q1 2026 | +$7.8M | +201K | +815.5% | Q1 2026 | |||||
|
Next Century Growth Investors LLC
· New
+$7.3M
Change
+187K
Date
Q1 2026
|
Next Century Growth Investors LLC | New· Q1 2026 | +$7.3M | +187K | – | Q1 2026 | |||||
|
First Sabrepoint Capital Management LP
· New
+$6.6M
Change
+170K
Date
Q1 2026
|
First Sabrepoint Capital Management LP | New· Q1 2026 | +$6.6M | +170K | – | Q1 2026 | |||||
|
Russell Investments Group, Ltd.
· Added
+$5.4M
Change
+140K
Date
Q1 2026
|
Russell Investments Group, Ltd. | Added· Q1 2026 | +$5.4M | +140K | – | Q1 2026 | |||||
|
Ameriprise Financial Inc
· Added
+$5.3M
Change
+137K
Date
Q1 2026
|
Ameriprise Financial Inc | Added· Q1 2026 | +$5.3M | +137K | – | Q1 2026 | |||||
|
Deutsche Bank AG
· Added
+$4.3M
Change
+110K
Date
Q1 2026
|
Deutsche Bank AG | Added· Q1 2026 | +$4.3M | +110K | – | Q1 2026 | |||||
|
Vanguard
· Added
+$4.1M
Change
+107K
Date
Q1 2026
|
Vanguard | Added· Q1 2026 | +$4.1M | +107K | – | Q1 2026 | |||||
|
D. E. Shaw & Co., Inc.
· Added
+$4.1M
Change
+105K
Δ Own
+7.5%
Date
Q1 2026
|
D. E. Shaw & Co., Inc. | Added· Q1 2026 | +$4.1M | +105K | +7.5% | Q1 2026 | |||||
|
4d Advisors, LLC
· New
+$3.9M
Change
+100K
Date
Q1 2026
|
4d Advisors, LLC | New· Q1 2026 | +$3.9M | +100K | – | Q1 2026 | |||||
|
SG Capital Management LLC
· New
+$3.8M
Change
+96K
Date
Q1 2026
|
SG Capital Management LLC | New· Q1 2026 | +$3.8M | +96K | – | Q1 2026 | |||||
| Insider | Title | Type | Price | Qty | Value | Owned | ΔOwn | Trade date | Filed date | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
Ragsdale Bruce
· Officer
Tax withholding or exercise payment (F)
-$177K
|
Ragsdale Bruce | Officer | Tax withholding or exercise payment (F) | $111.77 | -2K | -$177K | 105K | −1.5% | Jul 1, 2026 | Jul 2, 2026 | |||||||||
|
Swyt Greg
· CFO
Sell
−$456K
|
Swyt Greg | CFO | Sell | $66.81 | −7K | −$456K | 53K | – | Jun 8, 2026 | Jun 9, 2026 | |||||||||
|
Barros Philip Ryan Sr
· Director
Sell
−$962K
|
Barros Philip Ryan Sr | Director | Sell | $70.19 | −14K | −$962K | 165K | – | Jun 4, 2026 | Jun 5, 2026 | |||||||||
|
Barros Philip Ryan Sr
· Director
2 operations
0
|
Barros Philip Ryan Sr | Director | 2 operations | $21.76 | 0 | – | 0 | – | Jun 4, 2026 | Jun 5, 2026 | |||||||||
|
Black Laura A.
· Director
Sell
−$1.5M
|
Black Laura A. | Director | Sell | $75.02 | −20K | −$1.5M | 20K | – | Jun 2, 2026 | Jun 2, 2026 | |||||||||
|
Swyt Greg
· CFO
Tax withholding or exercise payment (F)
-$76K
|
Swyt Greg | CFO | Tax withholding or exercise payment (F) | $70.01 | -1K | -$76K | 60K | – | Jun 1, 2026 | Jun 2, 2026 | |||||||||
|
Swyt Greg
· CFO
Sell
−$1.4M
|
Swyt Greg | CFO | Sell | $70.42 | −20K | −$1.4M | 61K | – | May 28, 2026 | May 29, 2026 | |||||||||
|
Barros Philip Ryan Sr
· Director
Tax withholding or exercise payment (F)
-$74K
|
Barros Philip Ryan Sr | Director | Tax withholding or exercise payment (F) | $68.96 | -1K | -$74K | 177K | – | May 24, 2026 | May 27, 2026 | |||||||||
|
Titinger Jorge
· Director
Sell
−$257K
|
Titinger Jorge | Director | Sell | $64.21 | −4K | −$257K | 12K | – | May 19, 2026 | May 19, 2026 | |||||||||
|
Barros Philip Ryan Sr
· Director
Tax withholding or exercise payment (F)
-881
|
Barros Philip Ryan Sr | Director | Tax withholding or exercise payment (F) | – | -881 | – | 178K | – | May 18, 2026 | May 19, 2026 | |||||||||
|
Ragsdale Bruce
· Officer
Tax withholding or exercise payment (F)
-623
|
Ragsdale Bruce | Officer | Tax withholding or exercise payment (F) | – | -623 | – | 106K | – | May 18, 2026 | May 19, 2026 | |||||||||
|
Swyt Greg
· CFO
Tax withholding or exercise payment (F)
-503
|
Swyt Greg | CFO | Tax withholding or exercise payment (F) | – | -503 | – | 81K | – | May 18, 2026 | May 19, 2026 | |||||||||
|
Swyt Greg
· CFO
Tax withholding or exercise payment (F)
-$54K
|
Swyt Greg | CFO | Tax withholding or exercise payment (F) | $73.27 | -732 | -$54K | 73K | – | May 15, 2026 | May 15, 2026 | |||||||||
|
Barros Philip Ryan Sr
· Director
Tax withholding or exercise payment (F)
-$45K
|
Barros Philip Ryan Sr | Director | Tax withholding or exercise payment (F) | $73.27 | -610 | -$45K | 150K | – | May 15, 2026 | May 15, 2026 | |||||||||
|
Ragsdale Bruce
· Officer
Tax withholding or exercise payment (F)
-$39K
|
Ragsdale Bruce | Officer | Tax withholding or exercise payment (F) | $73.27 | -539 | -$39K | 94K | – | May 15, 2026 | May 15, 2026 | |||||||||
N
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239 reporting institutions disclosed ICHR 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.