덱스컴(주)
MX ˙ BMV ˙ US2521311074
SecurityMX:DXCM / DexCom, Inc.
InstitutionComerica Bank
Latest Disclosed Ownership44,154 shares
Latest Disclosed Value $ 2,930,530
Comerica Bank reports 75.54% decrease in ownership of DXCM / DexCom, Inc.

On January 29, 2026 - Comerica Bank filed a 13F-HR form disclosing ownership of 44,154 shares of DexCom, Inc. (MX:DXCM) valued at $2,930,530 USD as of December 31, 2025. The entity filed a previous 13F-HR on November 14, 2025 disclosing 180,494 shares of DexCom, Inc.. This represents a change in shares of -75.54% 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.

Upgrade to unlock premium data and export to Excel .

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)
2026-01-29 2025-12-31 13F DEXCOM COM 252131107 44,154 -136,340 -75.54 2,931 -75.87 0.0117
2025-11-14 2025-09-30 13F DEXCOM COM 252131107 180,494 10,937 6.45 12,145 -17.94 0.0457
2025-08-14 2025-06-30 13F DEXCOM COM 252131107 169,557 -2,702 -1.57 14,801 25.82 0.0574
2025-05-14 2025-03-31 13F DEXCOM COM 252131107 172,259 38,979 29.25 11,764 13.49 0.0494
2025-02-14 2024-12-31 13F/A-1 DEXCOM COM 252131107 133,280 4,167 3.23 10,365 19.76 0.0418
2025-02-14 2024-12-31 13F DEXCOM COM 252131107 133,280 4,167 10,365 0.0347
2024-11-14 2024-09-30 13F DEXCOM COM 252131107 129,113 1,343 1.05 8,656 -40.25 0.0342
2024-08-15 2024-06-30 13F DEXCOM COMMON 252131107 127,770 -471 -0.37 14,486 -18.56 0.0603
2024-05-16 2024-03-31 13F DEXCOM COMMON 252131107 128,241 -9,980 -7.22 17,787 3.71 0.0767
2024-02-14 2023-12-31 13F DEXCOM COMMON 252131107 138,221 -20,872 -13.12 17,152 15.55 0.0790
2023-11-21 2023-09-30 13F DEXCOM COMMON 252131107 159,093 159,093 14,843 0.0773
2023-08-22 2023-06-30 13F DEXCOM COM 252131107 0 -132,429 -100.00 0 -100.00
2023-01-26 2022-12-31 13F DEXCOM COM 252131107 132,429 12,567 10.48 15 -99.88 0.1127
2022-10-28 2022-09-30 13F DEXCOM COM 252131107 119,862 -46 -0.04 11,862 22.68 0.1000
2022-08-02 2022-06-30 13F DEXCOM COM 252131107 119,908 89,696 296.89 9,669 -35.53 0.0794
2022-04-27 2022-03-31 13F DEXCOM COM 252131107 30,212 1,371 4.75 14,997 27.99 0.1088
2022-02-18 2021-12-31 13F DEXCOM COM 252131107 28,841 -127 -0.44 11,717 -28.61 0.0862
2021-11-22 2021-09-30 13F DEXCOM COM 252131107 28,968 -6,028 -17.22 16,412 -7.24 0.0988
2021-08-26 2021-06-30 13F DEXCOM COM 252131107 34,996 367 1.06 17,693 23.12 0.1056
2021-04-28 2021-03-31 13F DEXCOM COM 252131107 34,629 9 0.03 14,371 12.15 0.0857
2021-01-28 2020-12-31 13F DEXCOM COM 252131107 34,620 363 1.06 12,814 -8.99 0.0813
2020-10-30 2020-09-30 13F DEXCOM COM 252131107 34,257 1,558 4.76 14,080 1.05 0.1022
2020-07-31 2020-06-30 13F DEXCOM COM 252131107 32,699 9,569 41.37 13,934 81.20 0.1074
2020-05-01 2020-03-31 13F DEXCOM COM 252131107 23,130 175 0.76 7,690 40.20 0.0705
2020-02-07 2019-12-31 13F DEXCOM COM 252131107 22,955 -3,232 -12.34 5,485 42.50 0.0415
2019-10-31 2019-09-30 13F DEXCOM COM 252131107 26,187 6,982 36.36 3,849 35.82 0.0304
2019-08-02 2019-06-30 13F DEXCOM COM 252131107 19,205 569 3.05 2,834 27.95 0.0227
2019-05-02 2019-03-31 13F DEXCOM COM 252131107 18,636 -508 -2.65 2,215 -17.38 0.0180
2019-02-06 2018-12-31 13F DEXCOM COM 252131107 19,144 309 1.64 2,681 8.54 0.0228
2018-11-01 2018-09-30 13F DEXCOM COM 252131107 18,835 -1,011 -5.09 2,470 22.34 0.0199
2018-08-01 2018-06-30 13F DEXCOM COM 252131107 19,846 -1,181 -5.62 2,019 32.05 0.0141
2018-05-01 2018-03-31 13F DEXCOM COM 252131107 21,027 2,302 12.29 1,529 41.44 0.0109
2018-02-02 2017-12-31 13F DEXCOM COM 252131107 18,725 300 1.63 1,081 29.62 0.0072
2017-11-06 2017-09-30 13F DEXCOM COM 252131107 18,425 839 4.77 834 -31.92 0.0060
2017-08-03 2017-06-30 13F DEXCOM COM 252131107 17,586 1,403 8.67 1,225 -2.85 0.0092
2017-05-03 2017-03-31 13F DEXCOM COM 252131107 16,183 -8,110 -33.38 1,261 -39.02 0.0096
2017-02-08 2016-12-31 13F DEXCOM COM 252131107 24,293 24,293 50.11 2,068 64.00 0.0164
2016-08-11 2016-06-30 13F DEXCOM COM 252131107 0 -3,687 -100.00 0 -100.00
2016-05-11 2016-03-31 13F DEXCOM COM 252131107 3,687 -71 -1.89 246 -17.73 0.0022
2016-02-05 2015-12-31 13F DEXCOM COM 252131107 3,758 1,300 52.89 299 41.71 0.0029
2015-11-12 2015-09-30 13F DEXCOM COM 252131107 2,458 2,458 -34.59 211 -29.43 0.0020
2014-08-12 2014-06-30 13F DEXCOM COM 252131107 0 -6,583 -100.00 0 -100.00
2014-05-15 2014-03-31 13F DEXCOM COM 252131107 6,583 28 0.43 272 17.24 0.0021
2014-02-11 2013-12-31 13F DEXCOM COM 252131107 6,555 6,555 232 0.0018
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.