DexCom, Inc.
MX ˙ BMV ˙ US2521311074
SecurityMX:DXCM / DexCom, Inc.
InstitutionJustInvest LLC
Latest Disclosed Ownership34,757 shares
Latest Disclosed Value $ 2,182,740
JustInvest LLC reports 10.95% increase in ownership of DXCM / DexCom, Inc.

On May 14, 2026 - JustInvest LLC filed a 13F-HR form disclosing ownership of 34,757 shares of DexCom, Inc. (MX:DXCM) valued at $2,182,740 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 31,328 shares of DexCom, Inc.. This represents a change in shares of 10.95% during the quarter.

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)
2026-05-14 2026-03-31 13F DEXCOM COM 252131107 34,757 3,429 10.95 2,183 4.95 0.0214
2026-02-13 2025-12-31 13F DEXCOM COM 252131107 31,328 -5,713 -15.42 2,079 -16.61 0.0203
2025-10-31 2025-09-30 13F DEXCOM COM 252131107 37,041 -7,219 -16.31 2,493 -35.48 0.0255
2025-07-25 2025-06-30 13F DEXCOM COM 252131107 44,260 5,763 14.97 3,864 47.03 0.0436
2025-05-14 2025-03-31 13F DEXCOM COM 252131107 38,497 -1,254 -3.15 2,629 -14.98 0.0388
2025-02-10 2024-12-31 13F DEXCOM COM 252131107 39,751 5,700 16.74 3,091 35.45 0.0467
2024-11-12 2024-09-30 13F DEXCOM COM 252131107 34,051 -5,355 -13.59 2,283 -48.85 0.0368
2024-08-12 2024-06-30 13F DEXCOM COM 252131107 39,406 -1,110 -2.74 4,461 -20.61 0.0849
2024-05-09 2024-03-31 13F DEXCOM COM 252131107 40,516 2,544 6.70 5,620 19.27 0.1206
2024-02-08 2023-12-31 13F DEXCOM COM 252131107 37,972 983 2.66 4,712 36.51 0.1223
2023-11-08 2023-09-30 13F DEXCOM COM 252131107 36,989 -2,181 -5.57 3,451 -31.43 0.1032
2023-07-28 2023-06-30 13F DEXCOM COM 252131107 39,170 2,164 5.85 5,034 17.07 0.1542
2023-05-10 2023-03-31 13F DEXCOM COM 252131107 37,006 5,493 17.43 4,299 20.49 0.1493
2023-02-10 2022-12-31 13F DEXCOM COM 252131107 31,513 9,692 44.42 3,569 103.07 0.1473
2022-11-14 2022-09-30 13F DEXCOM COM 252131107 21,821 8,214 60.37 1,757 73.27 0.0795
2022-08-12 2022-06-30 13F/A-1 DEXCOM COM 252131107 13,607 10,538 343.37 1,014 -35.41 0.0470
2022-08-09 2022-06-30 13F DEXCOM COM 252131107 13,607 10,538 1,014 0.0470
2022-05-16 2022-03-31 13F DEXCOM COM 252131107 3,069 800 35.26 1,570 28.90 0.0760
2022-02-23 2021-12-31 13F DEXCOM COM 252131107 2,269 756 49.97 1,218 47.28 0.0718
2021-11-09 2021-09-30 13F DEXCOM COM 252131107 1,513 576 61.47 827 106.75 0.0743
2021-08-11 2021-06-30 13F/A-1 DEXCOM COM 252131107 937 -712 -43.18 400 -32.55 0.0419
2021-07-21 2021-06-30 13F DEXCOM COM 252131107 1,649 0 593 0.0903
2021-04-28 2021-03-31 13F DEXCOM COM 252131107 1,649 668 68.09 593 63.36 0.0898
2021-01-20 2020-12-31 13F/A-1 DEXCOM COM 252131107 981 85 9.49 363 -1.63 0.0790
2020-10-26 2020-09-30 13F DEXCOM COM 252131107 896 136 17.89 369 19.81 0.1035
2020-07-27 2020-06-30 13F DEXCOM COM 252131107 760 760 308 0.1397
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.