DexCom, Inc.
MX ˙ BMV ˙ US2521311074
SecurityMX:DXCM / DexCom, Inc.
InstitutionAPG Asset Management N.V.
Latest Disclosed Ownership198,909 shares
Latest Disclosed Value $ 10,841,421
APG Asset Management N.V. reports 12.22% decrease in ownership of DXCM / DexCom, Inc.

On May 13, 2026 - APG Asset Management N.V. filed a 13F-HR form disclosing ownership of 198,909 shares of DexCom, Inc. (MX:DXCM) valued at $10,841,421 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 12, 2026 disclosing 226,602 shares of DexCom, Inc.. This represents a change in shares of -12.22% 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 198,909 -27,693 -12.22 10,841 -15.34 0.0344
2026-02-12 2025-12-31 13F DEXCOM COM 252131107 226,602 -10,066 -4.25 12,806 -5.52 0.0363
2025-11-12 2025-09-30 13F DEXCOM COM 252131107 236,668 1,870 0.80 13,554 -22.38 0.0380
2025-08-12 2025-06-30 13F DEXCOM COM 252131107 234,798 7,451 3.28 17,460 21.49 0.0517
2025-05-14 2025-03-31 13F DEXCOM COM 252131107 227,347 -16,235 -6.67 14,373 -21.43 0.0446
2025-02-13 2024-12-31 13F DEXCOM COM 252131107 243,582 207,601 576.97 18,294 746.51 0.0510
2024-11-14 2024-09-30 13F DEXCOM COM 252131107 35,981 -273,519 -88.37 2,161 -93.40 0.0143
2024-08-14 2024-06-30 13F DEXCOM COM 252131107 309,500 17,302 5.92 32,742 -12.75 0.0584
2024-05-14 2024-03-31 13F DEXCOM COM 252131107 292,198 -26,978 -8.45 37,526 4.66 0.0657
2024-02-13 2023-12-31 13F DEXCOM COM 252131107 319,176 -4,796 -1.48 35,854 18.62 0.0699
2023-11-14 2023-09-30 13F DEXCOM COM 252131107 323,972 -67,768 -17.30 30,227 -34.49 0.0618
2023-08-14 2023-06-30 13F DEXCOM COM 252131107 391,740 30,295 8.38 46,143 19.38 0.0931
2023-05-12 2023-03-31 13F DEXCOM COM 252131107 361,445 -63,402 -14.92 38,651 80,422.92 0.0820
2023-02-14 2022-12-31 13F DEXCOM COM 252131107 424,847 350,481 471.29 48 -99.21 0.0915
2022-11-14 2022-09-30 13F DEXCOM COM 252131107 74,366 24,218 48.29 6,114 71.02 0.0158
2022-08-12 2022-06-30 13F DEXCOM COM 252131107 50,148 45,644 1,013.41 3,575 72.62 0.0084
2022-05-12 2022-03-31 13F DEXCOM COM 252131107 4,504 -6,500 -59.07 2,071 -60.14 0.0039
2022-02-11 2021-12-31 13F DEXCOM COM 252131107 11,004 -3,000 -21.42 5,196 -21.37 0.0088
2021-11-15 2021-09-30 13F/A-1 DEXCOM COM 252131107 14,004 -3,900 -21.78 6,608 2.50 0.0117
2021-11-15 2021-09-30 13F DEXCOM COM 252131107 14,004 -3,900 6,608 0.0119
2021-08-13 2021-06-30 13F DEXCOM COM 252131107 17,904 1,820 11.32 6,447 31.09 0.0109
2021-05-14 2021-03-31 13F DEXCOM COM 252131107 16,084 -39,004 -70.80 4,918 -70.46 0.0084
2021-02-12 2020-12-31 13F DEXCOM COM 252131107 55,088 -17,390 -23.99 16,646 -34.67 0.0271
2020-11-12 2020-09-30 13F DEXCOM COM 252131107 72,478 -22,041 -23.32 25,479 -25.32 0.0441
2020-08-14 2020-06-30 13F DEXCOM COM 252131107 94,519 -34,869 -26.95 34,117 -2.08 0.0622
2020-05-19 2020-03-31 13F/A-2 DEXCOM COM 252131107 129,388 10,319 8.67 34,840 50.15 0.0683
2020-05-15 2020-03-31 13F/A-1 DEXCOM COM 252131107 129,388 0 34,840 0.0690
2020-05-14 2020-03-31 13F DEXCOM COM 252131107 13,600 -105,469 1,443 2,699.7988
2020-02-13 2019-12-31 13F DEXCOM COM 252131107 119,069 31,100 35.35 23,203 92.68 0.0377
2019-11-08 2019-09-30 13F DEXCOM COM 252131107 87,969 66,269 305.39 12,042 321.79 0.0198
2019-08-13 2019-06-30 13F DEXCOM COM 252131107 21,700 8,100 59.56 2,855 97.85 0.0049
2019-05-14 2019-03-31 13F DEXCOM COM 252131107 13,600 0 0.00 1,443 1.26 0.0026
2019-02-19 2018-12-31 13F/A-1 DEXCOM COM 252131107 13,600 13,600 0.00 1,425 -1.25 0.0029
2019-02-13 2018-12-31 13F DEXCOM COM 252131107 13,600 13,600 1,425
2018-01-24 2017-12-31 13F DEXCOM COM 252131107 0 -17,600 -100.00 0 -100.00
2017-10-19 2017-09-30 13F DEXCOM COM 252131107 17,600 17,600 861 0.0014
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.