DexCom, Inc.
US ˙ NasdaqGS ˙ US2521311074

SecurityDXCM / DexCom, Inc.
InstitutionFirst Horizon Advisors, Inc.
Latest Disclosed Ownership2,281 shares
Latest Disclosed Value $ 199,107
First Horizon Advisors, Inc. reports 44.18% increase in ownership of DXCM / DexCom, Inc.

On August 6, 2025 - First Horizon Advisors, Inc. filed a 13F-HR form disclosing ownership of 2,281 shares of DexCom, Inc. (US:DXCM) valued at $199,108 USD as of June 30, 2025. The entity filed a previous 13F-HR on April 28, 2025 disclosing 1,582 shares of DexCom, Inc.. This represents a change in shares of 44.18% during the quarter. The current value of the position is $165,578 USD.

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)
2025-08-06 2025-06-30 13F DEXCOM COMMON STOCK 252131107 2,281 699 44.18 199 84.26 0.0052
2025-04-28 2025-03-31 13F DEXCOM COMMON STOCK 252131107 1,582 320 25.36 108 10.20 0.0030
2025-02-03 2024-12-31 13F DEXCOM COMMON STOCK 252131107 1,262 -294 -18.89 98 -5.77 0.0027
2024-11-08 2024-09-30 13F DEXCOM COMMON STOCK 252131107 1,556 89 6.07 104 -37.35 0.0029
2024-07-19 2024-06-30 13F DEXCOM COMMON STOCK 252131107 1,467 465 46.41 166 20.29 0.0051
2024-04-26 2024-03-31 13F DEXCOM COMMON STOCK 252131107 1,002 55 5.81 139 17.95 0.0043
2024-02-06 2023-12-31 13F DEXCOM COMMON STOCK 252131107 947 41 4.53 118 39.29 0.0039
2023-10-27 2023-09-30 13F DEXCOM COMMON STOCK 252131107 906 46 5.35 85 -23.64 0.0031
2023-08-03 2023-06-30 13F DEXCOM COMMON STOCK 252131107 860 -50 -5.49 111 4.76 0.0038
2023-05-15 2023-03-31 13F DEXCOM COMMON STOCK 252131107 910 -50 -5.21 106 -2.78 0.0038
2023-02-10 2022-12-31 13F DEXCOM COMMON STOCK 252131107 960 86 9.84 109 56.52 0.0040
2022-11-09 2022-09-30 13F DEXCOM COMMON STOCK 252131107 874 23 2.70 69 11.29 0.0028
2022-08-02 2022-06-30 13F DEXCOM COMMON STOCK 252131107 851 778 1,065.75 62 67.57 0.0022
2022-05-10 2022-03-31 13F DEXCOM COMMON STOCK 252131107 73 -145 -66.51 37 -68.10 0.0016
2022-02-09 2021-12-31 13F DEXCOM COMMON STOCK 252131107 218 -19 -8.02 116 -9.37 0.0035
2021-11-15 2021-09-30 13F/A-1 DEXCOM COMMON STOCK 252131107 237 30 14.49 128 45.45 0.0042
2021-11-09 2021-09-30 13F DEXCOM COMMON STOCK 252131107 7,141 6,934 1,129 0.0165
2021-08-09 2021-06-30 13F DEXCOM COMMON STOCK 252131107 207 46 28.57 88 54.39 0.0047
2021-05-11 2021-03-31 13F DEXCOM COMMON STOCK 252131107 161 161 -22.22 57 -35.23 0.0033
2021-02-11 2020-12-31 13F DEXCOM COMMON STOCK 252131107 0 -11 -100.00 0 -100.00
2020-11-12 2020-09-30 13F DEXCOM COMMON STOCK 252131107 11 -5 -31.25 4 -33.33 0.0003
2020-07-31 2020-06-30 13F DEXCOM COMMON STOCK 252131107 16 -8 -33.33 6 0.00 0.0005
2020-05-05 2020-03-31 13F DEXCOM Common Stock 252131107 24 24 50.00 6 0.00 0.0006
2018-01-25 2017-12-31 13F DEXCOM COMMON STOCK 252131107 0 -280 -100.00 0 -100.00
2017-11-09 2017-09-30 13F DEXCOM COMMON STOCK 252131107 280 0 0.00 13 -31.58 0.0013
2017-08-14 2017-06-30 13F DEXCOM COMMON STOCK 252131107 280 -3,500 -92.59 19 -94.03 0.0021
2017-05-02 2017-03-31 13F DEXCOM COMMON STOCK 252131107 3,780 0 0.00 318 -3.34 0.0362
2017-02-13 2016-12-31 13F DEXCOM COMMON STOCK 252131107 3,780 0 0.00 329 0.00 0.0418
2016-10-28 2016-09-30 13F DEXCOM COMMON STOCK 252131107 3,780 0 0.00 329 10.03 0.0418
2016-07-29 2016-06-30 13F DEXCOM COMMON STOCK 252131107 3,780 0 0.00 299 17.25 0.0405
2016-05-09 2016-03-31 13F DEXCOM COMMON STOCK 252131107 3,780 52 1.39 255 -16.39 0.0284
2016-02-08 2015-12-31 13F DEXCOM COMMON STOCK 252131107 3,728 3,396 1,022.89 305 989.29 0.0542
2015-11-06 2015-09-30 13F DEXCOM COMMON STOCK 252131107 332 0 0.00 28 7.69 0.0043
2015-08-03 2015-06-30 13F/A-1 DEXCOM COMMON STOCK 252131107 332 12 3.75 26 36.84 0.0038
2015-07-31 2015-06-30 13F DEXCOM COMMON STOCK 252131107 5 26
2015-05-04 2015-03-31 13F DEXCOM COMMON STOCK 252131107 320 320 -3.61 19 -26.92 0.0027
2015-02-05 2014-12-31 13F DEXCOM COMMON STOCK 252131107 0 -320 -100.00 0 -100.00
2014-11-13 2014-09-30 13F/A-1 DEXCOM COMMON STOCK 252131107 320 320 12 0.0019
2014-11-13 2014-09-30 13F DEXCOM COMMON STOCK 252131107 320 320 12 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.