DexCom, Inc.
MX ˙ BMV ˙ US2521311074
SecurityMX:DXCM / DexCom, Inc.
InstitutionFirst Trust Advisors Lp
Latest Disclosed Ownership958,632 shares
Latest Disclosed Value $ 60,202,120
First Trust Advisors Lp reports 8.62% decrease in ownership of DXCM / DexCom, Inc.

On May 13, 2026 - First Trust Advisors Lp filed a 13F-HR form disclosing ownership of 958,632 shares of DexCom, Inc. (MX:DXCM) valued at $60,202,120 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 1,049,086 shares of DexCom, Inc.. This represents a change in shares of -8.62% 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)
2026-05-13 2026-03-31 13F DEXCOM COM 252131107 958,632 -90,454 -8.62 60,202 -13.54 0.0429
2026-02-13 2025-12-31 13F DEXCOM COM 252131107 1,049,086 34,627 3.41 69,628 2.00 0.0506
2025-11-12 2025-09-30 13F DEXCOM COM 252131107 1,014,459 163,818 19.26 68,263 -8.07 0.0507
2025-08-13 2025-06-30 13F DEXCOM COM 252131107 850,641 204,145 31.58 74,252 68.19 0.0597
2025-05-14 2025-03-31 13F DEXCOM COM 252131107 646,496 88,597 15.88 44,149 1.76 0.0391
2025-02-13 2024-12-31 13F DEXCOM COM 252131107 557,899 106,754 23.66 43,388 43.46 0.0382
2024-11-13 2024-09-30 13F DEXCOM COM 252131107 451,145 -9,882 -2.14 30,245 -42.14 0.0288
2024-08-13 2024-06-30 13F DEXCOM COM 252131107 461,027 96,382 26.43 52,271 3.35 0.0533
2024-05-13 2024-03-31 13F DEXCOM COM 252131107 364,645 112,724 44.75 50,576 61.79 0.0513
2024-02-13 2023-12-31 13F DEXCOM COM 252131107 251,921 -274,863 -52.18 31,261 -36.40 0.0341
2023-11-13 2023-09-30 13F DEXCOM COM 252131107 526,784 171,927 48.45 49,149 7.78 0.0583
2023-08-14 2023-06-30 13F DEXCOM COM 252131107 354,857 -131,581 -27.05 45,603 -19.31 0.0519
2023-05-15 2023-03-31 13F DEXCOM COM 252131107 486,438 334,657 220.49 56,514 228.82 0.0653
2023-02-09 2022-12-31 13F DEXCOM COM 252131107 151,781 -28,051 -15.60 17,188 18.66 0.0204
2022-11-14 2022-09-30 13F DEXCOM COM 252131107 179,832 -204,502 -53.21 14,484 -49.43 0.0188
2022-08-12 2022-06-30 13F DEXCOM COM 252131107 384,334 308,522 406.96 28,644 -26.15 0.0354
2022-05-13 2022-03-31 13F DEXCOM COM 252131107 75,812 -40,395 -34.76 38,785 -37.84 0.0397
2022-02-08 2021-12-31 13F DEXCOM COM 252131107 116,207 49,238 73.52 62,397 70.38 0.0607
2021-11-15 2021-09-30 13F DEXCOM COM 252131107 66,969 27,838 71.14 36,623 120.26 0.0394
2021-10-12 2021-06-30 13F/A-1 DEXCOM COM 252131107 39,131 -10,904 -21.79 16,627 -7.54 0.0180
2021-08-16 2021-06-30 13F DEXCOM COM 252131107 40,184 -9,851 17,159 0.0178
2021-05-14 2021-03-31 13F DEXCOM COM 252131107 50,035 -47,260 -48.57 17,982 -50.01 0.0218
2021-02-02 2020-12-31 13F DEXCOM COM 252131107 97,295 -26,568 -21.45 35,972 -29.55 0.0477
2020-11-05 2020-09-30 13F DEXCOM COM 252131107 123,863 -37,626 -23.30 51,060 -22.01 0.0818
2020-07-22 2020-06-30 13F DEXCOM COM 252131107 161,489 -84,012 -34.22 65,468 -0.97 0.1135
2020-05-06 2020-03-31 13F DEXCOM COM 252131107 245,501 74,729 43.76 66,106 76.97 0.1498
2020-02-03 2019-12-31 13F DEXCOM COM 252131107 170,772 -108,349 -38.82 37,355 -10.33 0.0638
2019-11-04 2019-09-30 13F DEXCOM COM 252131107 279,121 218,188 358.08 41,656 356.25 0.0784
2019-07-30 2019-06-30 13F DEXCOM COM 252131107 60,933 -345,796 -85.02 9,130 -81.15 0.0172
2019-06-19 2019-03-31 13F/A-1 DEXCOM COM 252131107 406,729 -17,345 -4.09 48,441 -4.65 0.0963
2019-05-09 2019-03-31 13F DEXCOM COM 252131107 406,729 -17,345 48,441
2019-02-07 2018-12-31 13F DEXCOM COM 252131107 424,074 140,942 49.78 50,804 25.45 0.1205
2018-10-25 2018-09-30 13F DEXCOM COM 252131107 283,132 63,431 28.87 40,499 94.08 0.0754
2018-08-02 2018-06-30 13F DEXCOM COM 252131107 219,701 127,915 139.36 20,867 206.55 0.0433
2018-04-23 2018-03-31 13F DEXCOM COM 252131107 91,786 91,786 -58.22 6,807 -67.38 0.0156
2018-02-08 2017-12-31 13F DEXCOM COM 252131107 0 -9,517 -100.00 0 -100.00
2017-10-24 2017-09-30 13F DEXCOM COM 252131107 9,517 -160,737 -94.41 466 -96.26 0.0012
2017-08-02 2017-06-30 13F DEXCOM COM 252131107 170,254 170,254 1,688.95 12,454 2,572.53 0.0332
2017-05-02 2017-03-31 13F DEXCOM COM 252131107 0 -82,761 -100.00 0 -100.00
2017-02-06 2016-12-31 13F DEXCOM COM 252131107 82,761 -60,669 -42.30 4,941 -60.70 0.0147
2016-11-01 2016-09-30 13F DEXCOM COM 252131107 143,430 72,102 101.09 12,573 122.22 0.0375
2016-08-04 2016-06-30 13F DEXCOM COM 252131107 71,328 -79,608 -52.74 5,658 -44.80 0.0178
2016-05-10 2016-03-31 13F DEXCOM COM 252131107 150,936 -710,191 -82.47 10,250 -85.47 0.0329
2016-05-04 2015-12-31 13F/A-1 DEXCOM COM 252131107 861,127 -298,935 -25.77 70,526 -29.19 0.1830
2016-02-03 2015-12-31 13F DEXCOM COM 252131107 861,127 70,526
2015-11-05 2015-09-30 13F DEXCOM COM 252131107 1,160,062 1,160,062 99,603 0.2885
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.