Norges
· Exited
−$507M
Change
−7.3M
Δ Own
−100.0%
Date
Q1 2026
DX
| Investor | Type | Est. change | Change | Δ Own | Date | ||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
|
Norges
· Exited
−$507M
Change
−7.3M
Δ Own
−100.0%
Date
Q1 2026
|
Norges | Exited· Q1 2026 | −$507M | −7.3M | −100.0% | Q1 2026 | |||||
|
Wellington Management Group LLP
· Added
+$435M
Change
+6.3M
Δ Own
+203.4%
Date
Q1 2026
|
Wellington Management Group LLP | Added· Q1 2026 | +$435M | +6.3M | +203.4% | Q1 2026 | |||||
|
Jennison Associates LLC
· Reduced
−$330M
Change
−4.7M
Date
Q1 2026
|
Jennison Associates LLC | Reduced· Q1 2026 | −$330M | −4.7M | – | Q1 2026 | |||||
|
Alliancebernstein L.P.
· Added
+$299M
Change
+4.3M
Date
Q1 2026
|
Alliancebernstein L.P. | Added· Q1 2026 | +$299M | +4.3M | – | Q1 2026 | |||||
|
CIBC Bancorp USA Inc.
· Added
+$289M
Change
+4.1M
Date
Q1 2026
|
CIBC Bancorp USA Inc. | Added· Q1 2026 | +$289M | +4.1M | – | Q1 2026 | |||||
|
D. E. Shaw & Co., Inc.
· Reduced
−$272M
Change
−3.9M
Δ Own
−99.3%
Date
Q1 2026
|
D. E. Shaw & Co., Inc. | Reduced· Q1 2026 | −$272M | −3.9M | −99.3% | Q1 2026 | |||||
|
Nuveen, LLC
· Reduced
−$202M
Change
−2.9M
Date
Q1 2026
|
Nuveen, LLC | Reduced· Q1 2026 | −$202M | −2.9M | – | Q1 2026 | |||||
|
UBS Group AG
· Added
+$169M
Change
+2.4M
Date
Q1 2026
|
UBS Group AG | Added· Q1 2026 | +$169M | +2.4M | – | Q1 2026 | |||||
|
Toronto Dominion Bank
· Added
+$156M
Change
+2.2M
Date
Q1 2026
|
Toronto Dominion Bank | Added· Q1 2026 | +$156M | +2.2M | – | Q1 2026 | |||||
|
Ameriprise Financial Inc
· Added
+$147M
Change
+2.1M
Date
Q1 2026
|
Ameriprise Financial Inc | Added· Q1 2026 | +$147M | +2.1M | – | Q1 2026 | |||||
|
Citadel Advisors LLC
· Added
+$140M
Change
+2.0M
Δ Own
+2307.2%
Date
Q1 2026
|
Citadel Advisors LLC | Added· Q1 2026 | +$140M | +2.0M | +2307.2% | Q1 2026 | |||||
|
UBS AM
· Added
+$122M
Change
+1.7M
Date
Q1 2026
|
UBS AM | Added· Q1 2026 | +$122M | +1.7M | – | Q1 2026 | |||||
|
J. Stern & Co. LLP
· Reduced
−$110M
Change
−1.6M
Date
Q1 2026
|
J. Stern & Co. LLP | Reduced· Q1 2026 | −$110M | −1.6M | – | Q1 2026 | |||||
|
Los Angeles Capital Management LLC
· Reduced
−$109M
Change
−1.6M
Date
Q1 2026
|
Los Angeles Capital Management LLC | Reduced· Q1 2026 | −$109M | −1.6M | – | Q1 2026 | |||||
|
SG Americas Securities, LLC
· Added
+$106M
Change
+1.5M
Date
Q1 2026
|
SG Americas Securities, LLC | Added· Q1 2026 | +$106M | +1.5M | – | Q1 2026 | |||||
| Insider | Title | Type | Price | Qty | Value | Owned | ΔOwn | Trade date | Filed date | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
Sayer Kevin R.
· Director
Sell
−$2.0M
|
Sayer Kevin R. | Director | Sell | $76.32 | −27K | −$2.0M | 329K | −7.5% | Jul 20, 2026 | Jul 21, 2026 | |||||||||
|
Brown Michael Jon
· Officer
Sell
−$127K
|
Brown Michael Jon | Officer | Sell | $74.42 | −2K | −$127K | 105K | −1.6% | Jul 15, 2026 | Jul 16, 2026 | |||||||||
|
Sayer Kevin R.
· Director
Sell
−$1.9M
|
Sayer Kevin R. | Director | Sell | $72.00 | −27K | −$1.9M | 356K | −7.0% | Jul 6, 2026 | Jul 7, 2026 | |||||||||
|
Brown Michael Jon
· Officer
Sell
−$128K
|
Brown Michael Jon | Officer | Sell | $75.55 | −2K | −$128K | 106K | – | Jun 15, 2026 | Jun 17, 2026 | |||||||||
|
Foletta Mark G.
· Director
2 operations
−$297K
|
Foletta Mark G. | Director | 2 operations | $74.10–$74.82 | −4K | −$297K | 53K | – | Jun 15, 2026 | Jun 17, 2026 | |||||||||
|
Coleman Jon
· Officer
Sell
−$364K
|
Coleman Jon | Officer | Sell | $74.13 | −5K | −$364K | 95K | – | Jun 4, 2026 | Jun 5, 2026 | |||||||||
|
Coleman Jon
· Officer
Sell
−$359K
|
Coleman Jon | Officer | Sell | $73.00 | −5K | −$359K | 100K | – | Jun 3, 2026 | Jun 5, 2026 | |||||||||
|
Altman Steven R.
· Director
Grant (A)
6K
|
Altman Steven R. | Director | Grant (A) | – | 6K | – | 6K | – | May 28, 2026 | Jun 1, 2026 | |||||||||
|
Malady Kyle
· Director
Grant (A)
6K
|
Malady Kyle | Director | Grant (A) | – | 6K | – | 28K | – | May 28, 2026 | Jun 1, 2026 | |||||||||
|
Augustinos Nicholas
· Director
Grant (A)
6K
|
Augustinos Nicholas | Director | Grant (A) | – | 6K | – | 6K | – | May 28, 2026 | Jun 1, 2026 | |||||||||
|
Foletta Mark G.
· Director
Grant (A)
6K
|
Foletta Mark G. | Director | Grant (A) | – | 6K | – | 6K | – | May 28, 2026 | Jun 1, 2026 | |||||||||
|
Heller Bridgette P.
· Director
Grant (A)
6K
|
Heller Bridgette P. | Director | Grant (A) | – | 6K | – | 31K | – | May 28, 2026 | Jun 1, 2026 | |||||||||
|
Osterloh Albert Frederick IV
· Director
Grant (A)
2K
|
Osterloh Albert Frederick IV | Director | Grant (A) | – | 2K | – | 9K | – | May 28, 2026 | Jun 1, 2026 | |||||||||
|
Driscoll Rimma
· Director
Grant (A)
6K
|
Driscoll Rimma | Director | Grant (A) | – | 6K | – | 17K | – | May 28, 2026 | Jun 1, 2026 | |||||||||
|
Ashley Euan A.
· Director
Grant (A)
6K
|
Ashley Euan A. | Director | Grant (A) | – | 6K | – | 13K | – | May 28, 2026 | Jun 1, 2026 | |||||||||
N
A
M
G
A
A
924 reporting institutions disclosed DXCM 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.