DexCom, Inc.
MX ˙ BMV ˙ US2521311074
SecurityMX:DXCM / DexCom, Inc.
InstitutionWeatherly Asset Management L. P.
Latest Disclosed Ownership20,191 shares
Latest Disclosed Value $ 1,268,016
Weatherly Asset Management L. P. ownership in DXCM / DexCom, Inc.

On April 15, 2026 - Weatherly Asset Management L. P. filed a 13F-HR form disclosing ownership of 20,191 shares of DexCom, Inc. (MX:DXCM) valued at $1,268,016 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 16, 2026 disclosing 20,191 shares of DexCom, Inc.. This represents a change in shares of 0.00% 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)
2026-04-15 2026-03-31 13F DEXCOM COMMON 252131107 20,191 0 0.00 1,268 -5.37 0.1026
2026-01-16 2025-12-31 13F DEXCOM COMMON 252131107 20,191 -776 -3.70 1,340 -4.96 0.1031
2025-10-16 2025-09-30 13F DEXCOM COMMON 252131107 20,967 1,588 8.19 1,411 -16.62 0.1162
2025-07-11 2025-06-30 13F DEXCOM COMMON 252131107 19,379 -125 -0.64 1,692 27.05 0.1442
2025-05-01 2025-03-31 13F DEXCOM COMMON 252131107 19,504 -630 -3.13 1,332 -14.95 0.1194
2025-01-29 2024-12-31 13F DEXCOM COMMON 252131107 20,134 -250 -1.23 1,566 14.57 0.1389
2024-10-29 2024-09-30 13F DEXCOM COMMON 252131107 20,384 -140 -0.68 1,367 -41.30 0.1198
2024-07-31 2024-06-30 13F DEXCOM COMMON 252131107 20,524 58 0.28 2,327 -18.01 0.2131
2024-04-19 2024-03-31 13F DEXCOM COMMON 252131107 20,466 -2,152 -9.51 2,839 1.14 0.2746
2024-02-01 2023-12-31 13F DEXCOM COMMON 252131107 22,618 -192 -0.84 2,807 31.86 0.3024
2023-10-10 2023-09-30 13F DEXCOM COMMON 252131107 22,810 -29 -0.13 2,128 -27.50 0.2542
2023-07-21 2023-06-30 13F DEXCOM COMMON 252131107 22,839 -347 -1.50 2,935 8.99 0.3424
2023-04-13 2023-03-31 13F DEXCOM COMMON 252131107 23,186 -730 -3.05 2,694 -0.55 0.3496
2023-01-11 2022-12-31 13F DEXCOM COMMON 252131107 23,916 -800 -3.24 2,708 36.01 0.3696
2022-10-17 2022-09-30 13F DEXCOM COMMON 252131107 24,716 0 0.00 1,991 8.09 0.2861
2022-07-18 2022-06-30 13F DEXCOM COMMON 252131107 24,716 17,907 262.99 1,842 -47.11 0.2565
2022-05-06 2022-03-31 13F DEXCOM COMMON 252131107 6,809 0 0.00 3,483 -4.73 0.4074
2022-01-28 2021-12-31 13F DEXCOM COMMON 252131107 6,809 -39 -0.57 3,656 -2.38 0.4055
2021-11-05 2021-09-30 13F DEXCOM COMMON 252131107 6,848 -10 -0.15 3,745 27.90 0.4557
2021-08-12 2021-06-30 13F DEXCOM COMMON 252131107 6,858 195 2.93 2,928 22.25 0.3692
2021-05-05 2021-03-31 13F DEXCOM COMMON 252131107 6,663 -165 -2.42 2,395 -5.11 0.3323
2021-02-02 2020-12-31 13F DEXCOM COMMON 252131107 6,828 -125 -1.80 2,524 -11.93 0.3626
2020-10-30 2020-09-30 13F DEXCOM COMMON 252131107 6,953 0 0.00 2,866 1.67 0.4624
2020-07-29 2020-06-30 13F DEXCOM COMMON 252131107 6,953 -300 -4.14 2,819 44.34 0.4983
2020-05-01 2020-03-31 13F DEXCOM COMMON 252131107 7,253 0 0.00 1,953 23.06 0.4270
2020-01-23 2019-12-31 13F DEXCOM COMMON 252131107 7,253 -280 -3.72 1,587 41.19 0.3032
2019-11-07 2019-09-30 13F DEXCOM COMMON 252131107 7,533 0 0.00 1,124 -0.44 0.2395
2019-07-31 2019-06-30 13F DEXCOM COMMON 252131107 7,533 0 0.00 1,129 25.86 0.2250
2019-05-01 2019-03-31 13F DEXCOM COMMON 252131107 7,533 0 0.00 897 -0.55 0.1832
2019-02-11 2018-12-31 13F DEXCOM COMMON 252131107 7,533 0 0.00 902 -16.33 0.2136
2018-11-08 2018-09-30 13F DEXCOM COMMON 252131107 7,533 0 0.00 1,078 50.77 0.2212
2018-07-31 2018-06-30 13F DEXCOM COMMON 252131107 7,533 0 0.00 715 27.91 0.1668
2018-05-07 2018-03-31 13F DEXCOM COMMON 252131107 7,533 -150 -1.95 559 26.76 0.1325
2018-01-30 2017-12-31 13F DEXCOM COMMON 252131107 7,683 -1,735 -18.42 441 -4.34 0.1066
2017-10-20 2017-09-30 13F DEXCOM COMMON 252131107 9,418 0 0.00 461 -33.09 0.1223
2017-07-27 2017-06-30 13F DEXCOM COMMON 252131107 9,418 1,295 15.94 689 0.15 0.1940
2017-04-28 2017-03-31 13F DEXCOM COMMON 252131107 8,123 3,938 94.10 688 175.20 0.2032
2017-02-14 2016-12-31 13F DEXCOM COMMON 252131107 4,185 4,185 250 0.0796
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.