DexCom, Inc.
US ˙ NasdaqGS ˙ US2521311074

SecurityDXCM / DexCom, Inc.
InstitutionXponance, Inc.
Latest Disclosed Ownership106,088 shares
Latest Disclosed Value $ 6,662,326
Xponance, Inc. reports 8.34% increase in ownership of DXCM / DexCom, Inc.

On May 13, 2026 - Xponance, Inc. filed a 13F-HR form disclosing ownership of 106,088 shares of DexCom, Inc. (US:DXCM) valued at $6,662,326 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 12, 2026 disclosing 97,920 shares of DexCom, Inc.. This represents a change in shares of 8.34% during the quarter. The current value of the position is $7,720,024 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)
2026-05-13 2026-03-31 13F DEXCOM COM 252131107 106,088 8,168 8.34 6,662 2.52 0.0474
2026-02-12 2025-12-31 13F DEXCOM COM 252131107 97,920 5,021 5.40 6,499 3.95 0.0488
2025-11-12 2025-09-30 13F DEXCOM COM 252131107 92,899 -1,094 -1.16 6,251 -23.81 0.0495
2025-08-14 2025-06-30 13F DEXCOM COM 252131107 93,993 3,771 4.18 8,205 33.16 0.0686
2025-05-01 2025-03-31 13F DEXCOM COM 252131107 90,222 1,023 1.15 6,161 -11.19 0.0596
2025-02-11 2024-12-31 13F DEXCOM COM 252131107 89,199 -948 -1.05 6,937 14.79 0.0633
2024-11-12 2024-09-30 13F DEXCOM COM 252131107 90,147 687 0.77 6,043 -40.42 0.0583
2024-08-14 2024-06-30 13F DEXCOM COM 252131107 89,460 2,141 2.45 10,143 -16.26 0.1037
2024-05-13 2024-03-31 13F DEXCOM COM 252131107 87,319 1,594 1.86 12,111 13.86 0.1269
2024-01-31 2023-12-31 13F DEXCOM COM 252131107 85,725 -2,878 -3.25 10,638 28.68 0.1274
2023-10-24 2023-09-30 13F DEXCOM COM 252131107 88,603 1,701 1.96 8,267 -25.98 0.1125
2023-07-14 2023-06-30 13F DEXCOM COM 252131107 86,902 1,842 2.17 11,168 13.00 0.1487
2023-04-18 2023-03-31 13F DEXCOM COM 252131107 85,060 1,245 1.49 9,882 4.12 0.1445
2023-01-24 2022-12-31 13F DEXCOM COM 252131107 83,815 5,389 6.87 9,491 50.27 0.1538
2022-10-24 2022-09-30 13F DEXCOM COM 252131107 78,426 -429 -0.54 6,316 7.47 0.1214
2022-08-02 2022-06-30 13F DEXCOM COM 252131107 78,855 58,640 290.08 5,877 -43.17 0.1181
2022-04-20 2022-03-31 13F DEXCOM COM 252131107 20,215 214 1.07 10,342 -3.71 0.1720
2022-01-31 2021-12-31 13F DEXCOM COM 252131107 20,001 5,242 35.52 10,740 33.07 0.1685
2021-11-05 2021-09-30 13F DEXCOM COM 252131107 14,759 -417 -2.75 8,071 24.55 0.1533
2021-08-12 2021-06-30 13F DEXCOM COM 252131107 15,176 1,479 10.80 6,480 31.63 0.1191
2021-05-10 2021-03-31 13F DEXCOM COM 252131107 13,697 -8 -0.06 4,923 -2.84 0.1043
2021-02-11 2020-12-31 13F DEXCOM COM 252131107 13,705 254 1.89 5,067 -8.62 0.1103
2020-10-26 2020-09-30 13F DEXCOM COM 252131107 13,451 177 1.33 5,545 3.05 0.1363
2020-08-14 2020-06-30 13F DEXCOM COM 252131107 13,274 13,274 5,381 0.1389
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.