Westfield Capital Management Co LP
· New
+$62M
Change
+208K
Date
Q1 2026
IB
| Investor | Type | Est. change | Change | Δ Own | Date | ||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
|
Westfield Capital Management Co LP
· New
+$62M
Change
+208K
Date
Q1 2026
|
Westfield Capital Management Co LP | New· Q1 2026 | +$62M | +208K | – | Q1 2026 | |||||
|
Invesco Ltd.
· Added
+$59M
Change
+196K
Δ Own
+172.3%
Date
Q1 2026
|
Invesco Ltd. | Added· Q1 2026 | +$59M | +196K | +172.3% | Q1 2026 | |||||
|
BlackRock
· Added
+$41M
Change
+138K
Date
Q1 2026
|
BlackRock | Added· Q1 2026 | +$41M | +138K | – | Q1 2026 | |||||
|
Jane Street Group, LLC
· Added
+$37M
Change
+124K
Date
Q1 2026
|
Jane Street Group, LLC | Added· Q1 2026 | +$37M | +124K | – | Q1 2026 | |||||
|
Bank of America Corp
· Added
+$31M
Change
+102K
Date
Q1 2026
|
Bank of America Corp | Added· Q1 2026 | +$31M | +102K | – | Q1 2026 | |||||
|
Fuller & Thaler Asset Management, Inc.
· Added
+$18M
Change
+60K
Date
Q1 2026
|
Fuller & Thaler Asset Management, Inc. | Added· Q1 2026 | +$18M | +60K | – | Q1 2026 | |||||
|
FMR LLC
· Added
+$18M
Change
+59K
Δ Own
+20.0%
Date
Q1 2026
|
FMR LLC | Added· Q1 2026 | +$18M | +59K | +20.0% | Q1 2026 | |||||
|
Life Cycle Investment Partners Ltd
· Added
+$17M
Change
+58K
Date
Q1 2026
|
Life Cycle Investment Partners Ltd | Added· Q1 2026 | +$17M | +58K | – | Q1 2026 | |||||
|
Td Asset Management Inc
· Added
+$17M
Change
+56K
Date
Q1 2026
|
Td Asset Management Inc | Added· Q1 2026 | +$17M | +56K | – | Q1 2026 | |||||
|
Vanguard
· Added
+$17M
Change
+56K
Date
Q1 2026
|
Vanguard | Added· Q1 2026 | +$17M | +56K | – | Q1 2026 | |||||
|
Td Waterhouse Canada Inc.
· Added
+$15M
Change
+49K
Date
Q1 2026
|
Td Waterhouse Canada Inc. | Added· Q1 2026 | +$15M | +49K | – | Q1 2026 | |||||
|
Artisan Partners Limited Partnership
· Added
+$15M
Change
+49K
Date
Q1 2026
|
Artisan Partners Limited Partnership | Added· Q1 2026 | +$15M | +49K | – | Q1 2026 | |||||
|
Goldman Sachs Group Inc
· Added
+$12M
Change
+40K
Date
Q1 2026
|
Goldman Sachs Group Inc | Added· Q1 2026 | +$12M | +40K | – | Q1 2026 | |||||
|
Geode
· Added
+$11M
Change
+38K
Date
Q1 2026
|
Geode | Added· Q1 2026 | +$11M | +38K | – | Q1 2026 | |||||
|
D. E. Shaw & Co., Inc.
· Added
+$11M
Change
+37K
Δ Own
+384.3%
Date
Q1 2026
|
D. E. Shaw & Co., Inc. | Added· Q1 2026 | +$11M | +37K | +384.3% | Q1 2026 | |||||
| Insider | Title | Type | Price | Qty | Value | Owned | ΔOwn | Trade date | Filed date | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
Miller Michael Thomas
· Director
10 operations
+$199K
|
Miller Michael Thomas | Director | 10 operations | $195.89–$206.74 | +990 | +$199K | 34K | – | Jun 11, 2026 | Jun 15, 2026 | |||||||||
|
Carter Margot Lebenberg
· Director
Grant (A)
855
|
Carter Margot Lebenberg | Director | Grant (A) | – | 855 | – | 8K | – | May 19, 2026 | May 20, 2026 | |||||||||
|
Hilsheimer Lawrence A.
· Director
Grant (A)
855
|
Hilsheimer Lawrence A. | Director | Grant (A) | – | 855 | – | 29K | – | May 19, 2026 | May 20, 2026 | |||||||||
|
Jackson Janet E.
· Director
Grant (A)
855
|
Jackson Janet E. | Director | Grant (A) | – | 855 | – | 6K | – | May 19, 2026 | May 20, 2026 | |||||||||
|
Meuse David R.
· Director
Grant (A)
855
|
Meuse David R. | Director | Grant (A) | – | 855 | – | 7K | – | May 19, 2026 | May 20, 2026 | |||||||||
|
Moore Marchelle E.
· Director
Grant (A)
855
|
Moore Marchelle E. | Director | Grant (A) | – | 855 | – | 3K | – | May 19, 2026 | May 20, 2026 | |||||||||
|
Schottenstein Robert H.
· Director
Grant (A)
855
|
Schottenstein Robert H. | Director | Grant (A) | – | 855 | – | 4K | – | May 19, 2026 | May 20, 2026 | |||||||||
|
Thomas Michael H.
· Director
Grant (A)
855
|
Thomas Michael H. | Director | Grant (A) | – | 855 | – | 9K | – | May 19, 2026 | May 20, 2026 | |||||||||
|
Niswonger Jason R.
· Officer
Gift (G)
-25
|
Niswonger Jason R. | Officer | Gift (G) | – | -25 | – | 17K | – | May 12, 2026 | May 14, 2026 | |||||||||
|
Hilsheimer Lawrence A.
· Director
Buy
+$98K
|
Hilsheimer Lawrence A. | Director | Buy | $206.22 | +475 | +$98K | 28K | – | May 11, 2026 | May 12, 2026 | |||||||||
|
Niswonger Jason R.
· Officer
Buy
+$98K
|
Niswonger Jason R. | Officer | Buy | $214.80 | +455 | +$98K | 17K | – | May 11, 2026 | May 12, 2026 | |||||||||
|
Miller Michael Thomas
· Director
14 operations
+$499K
|
Miller Michael Thomas | Director | 14 operations | $204.10–$217.91 | +2K | +$499K | 33K | – | May 11, 2026 | May 12, 2026 | |||||||||
|
Wheeler Brad A.
· Officer
Buy
+$150K
|
Wheeler Brad A. | Officer | Buy | $209.13 | +716 | +$150K | 15K | – | May 11, 2026 | May 12, 2026 | |||||||||
|
Fry Todd R.
· Officer
Tax withholding or exercise payment (F)
-$234K
|
Fry Todd R. | Officer | Tax withholding or exercise payment (F) | $309.45 | -756 | -$234K | 8K | – | Apr 20, 2026 | Apr 21, 2026 | |||||||||
|
Hire William Jeffrey
· Officer
Tax withholding or exercise payment (F)
-$880K
|
Hire William Jeffrey | Officer | Tax withholding or exercise payment (F) | $309.45 | -3K | -$880K | 32K | – | Apr 20, 2026 | Apr 21, 2026 | |||||||||
N
M
A
M
G
A
419 reporting institutions disclosed IBP 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.