DexCom, Inc.
US ˙ NasdaqGS ˙ US2521311074

SecurityDXCM / DexCom, Inc.
InstitutionIng Groep Nv
Latest Disclosed Ownership766,341 shares
Latest Disclosed Value $ 48,126,215
Ing Groep Nv reports 13.75% increase in ownership of DXCM / DexCom, Inc.

On May 11, 2026 - Ing Groep Nv filed a 13F-HR form disclosing ownership of 766,341 shares of DexCom, Inc. (US:DXCM) valued at $48,126,215 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 11, 2026 disclosing 673,692 shares of DexCom, Inc.. This represents a change in shares of 13.75% during the quarter. The current value of the position is $55,766,635 USD.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date		 Effective
Date		Form Security Class ID Avg Price
Paid (Est)		 Reported
Shares		 ΔShares ΔShares
(%)		 Reported
Value
(x1000)		 ΔValue
(%)		 Alloc
(%)		 ΔAlloc ΔAlloc (%) Cost Basis
(x1000)		 Unrealized
Gain/Loss
(x1000)
2026-05-11 2026-03-31 13F DEXCOM COM 252131107 766,341 92,649 13.75 48,126 7.64 0.2943
2026-02-11 2025-12-31 13F DEXCOM COM 252131107 673,692 168,752 33.42 44,713 31.59 0.2697
2025-11-06 2025-09-30 13F DEXCOM COM 252131107 504,940 393,477 353.01 33,977 249.23 0.1838
2025-08-06 2025-06-30 13F DEXCOM COM 252131107 111,463 -96,335 -46.36 9,730 -31.44 0.0592
2025-05-09 2025-03-31 13F DEXCOM COM 252131107 207,798 131,195 171.27 14,191 138.21 0.0984
2025-02-03 2024-12-31 13F DEXCOM COM 252131107 76,603 43,688 132.73 5,957 170.04 0.0401
2024-11-06 2024-09-30 13F DEXCOM COM 252131107 32,915 -56,662 -63.26 2,207 -78.28 0.0128
2024-08-13 2024-06-30 13F DEXCOM COM 252131107 89,577 89,577 10,156 0.0602
2024-02-08 2023-12-31 13F DEXCOM COM 252131107 0 -5,617 -100.00 0 -100.00
2023-10-27 2023-09-30 13F DEXCOM COM 252131107 5,617 -32,946 -85.43 524 -89.42 0.0046
2023-08-07 2023-06-30 13F DEXCOM COM 252131107 38,563 36,137 1,489.57 4,956 1,663.35 0.0376
2023-05-09 2023-03-31 13F DEXCOM COM 252131107 2,426 -88,348 -97.33 282 -97.27 0.0027
2023-02-13 2022-12-31 13F DEXCOM COM 252131107 90,774 90,774 10,279 0.1032
2022-05-13 2022-03-31 13F DEXCOM COM 252131107 0 -16,768 -100.00 0 -100.00
2022-02-11 2021-12-31 13F DEXCOM COM 252131107 16,768 6,942 70.65 9,004 67.58 0.0805
2021-11-02 2021-09-30 13F DEXCOM COM 252131107 9,826 178 1.84 5,373 30.41 0.0690
2021-08-13 2021-06-30 13F DEXCOM COM 252131107 9,648 3,280 51.51 4,120 79.99 0.0657
2021-05-12 2021-03-31 13F DEXCOM COM 252131107 6,368 -1 -0.02 2,289 -2.80 0.0474
2021-02-11 2020-12-31 13F DEXCOM COM 252131107 6,369 4,250 200.57 2,355 169.45 0.0526
2020-11-12 2020-09-30 13F DEXCOM COM 252131107 2,119 1,338 171.32 874 175.71 0.0360
2020-08-13 2020-06-30 13F DEXCOM COM 252131107 781 781 317 0.0137
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.