DexCom, Inc.
MX ˙ BMV ˙ US2521311074
SecurityMX:DXCM / DexCom, Inc.
InstitutionCommonwealth Equity Services, Llc
Latest Disclosed Ownership31,976 shares
Latest Disclosed Value $ 2,122,229
Commonwealth Equity Services, Llc reports 15.40% increase in ownership of DXCM / DexCom, Inc.

On February 12, 2026 - Commonwealth Equity Services, Llc filed a 13F-HR form disclosing ownership of 31,976 shares of DexCom, Inc. (MX:DXCM) valued at $2,122,229 USD as of December 31, 2025. The entity filed a previous 13F-HR on October 22, 2025 disclosing 27,708 shares of DexCom, Inc.. This represents a change in shares of 15.40% 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)
2026-02-12 2025-12-31 13F DEXCOM COM 252131107 31,976 4,268 15.40 2,122 212,100.00 0.0028
2025-10-22 2025-09-30 13F DEXCOM COM 252131107 27,708 -5,406 -16.33 2 -50.00 0.0024
2025-08-06 2025-06-30 13F DEXCOM COM 252131107 33,114 -14,464 -30.40 3 -33.33 0.0038
2025-05-09 2025-03-31 13F DEXCOM COM 252131107 47,578 3,197 7.20 3 0.00 0.0046
2025-02-10 2024-12-31 13F DEXCOM COM 252131107 44,381 -1,562 -3.40 3 0.00 0.0050
2024-10-18 2024-09-30 13F DEXCOM COM 252131107 45,943 -4,483 -8.89 3 -40.00 0.0047
2024-07-31 2024-06-30 13F DEXCOM COM 252131107 50,426 -1,690 -3.24 6 -28.57 0.0090
2024-04-29 2024-03-31 13F DEXCOM COM 252131107 52,116 4,711 9.94 7 40.00 0.0120
2024-02-06 2023-12-31 13F DEXCOM COM 252131107 47,405 3,636 8.31 6 25.00 0.0108
2023-10-23 2023-09-30 13F DEXCOM COM 252131107 43,769 635 1.47 4 -20.00 0.0085
2023-08-10 2023-06-30 13F DEXCOM COM 252131107 43,134 7,905 22.44 6 25.00 0.0113
2023-05-11 2023-03-31 13F DEXCOM COM 252131107 35,229 -3,451 -8.92 4 0.00 0.0086
2023-02-07 2022-12-31 13F DEXCOM COM 252131107 38,680 -277 -0.71 4 -99.87 0.0105
2022-11-14 2022-09-30 13F DEXCOM COM 252131107 38,957 -1,757 -4.32 3,137 3.39 0.0081
2022-07-19 2022-06-30 13F DEXCOM COM 252131107 40,714 31,412 337.69 3,034 -36.25 0.0079
2022-05-04 2022-03-31 13F DEXCOM COM 252131107 9,302 -2,308 -19.88 4,759 -23.66 0.0109
2022-01-31 2021-12-31 13F DEXCOM COM 252131107 11,610 -458 -3.80 6,234 -5.53 0.0140
2021-10-29 2021-09-30 13F DEXCOM COM 252131107 12,068 3,427 39.66 6,599 78.88 0.0166
2021-08-11 2021-06-30 13F DEXCOM COM 252131107 8,641 44 0.51 3,689 19.42 0.0094
2021-05-04 2021-03-31 13F DEXCOM COM 252131107 8,597 -1,043 -10.82 3,089 -13.33 0.0087
2021-02-11 2020-12-31 13F DEXCOM COM 252131107 9,640 -6,299 -39.52 3,564 -45.75 0.0107
2020-11-05 2020-09-30 13F DEXCOM COM 252131107 15,939 6,781 74.04 6,570 76.99 0.0224
2020-08-12 2020-06-30 13F DEXCOM COM 252131107 9,158 1,850 25.31 3,712 88.71 0.0140
2020-05-11 2020-03-31 13F DEXCOM COM 252131107 7,308 1,377 23.22 1,967 51.66 0.0092
2020-02-05 2019-12-31 13F DEXCOM COM 252131107 5,931 76 1.30 1,297 48.57 0.0049
2019-10-30 2019-09-30 13F DEXCOM COM 252131107 5,855 214 3.79 873 3.31 0.0037
2019-07-19 2019-06-30 13F DEXCOM COM 252131107 5,641 1,688 42.70 845 79.79 0.0037
2019-05-13 2019-03-31 13F DEXCOM COM 252131107 3,953 507 14.71 470 14.08 0.0022
2019-02-11 2018-12-31 13F DEXCOM COM 252131107 3,446 -1,143 -24.91 412 -37.20 0.0022
2018-11-06 2018-09-30 13F DEXCOM COM 252131107 4,589 2,146 87.84 656 182.76 0.0031
2018-07-31 2018-06-30 13F DEXCOM COM 252131107 2,443 2,443 232 0.0012
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.