DexCom, Inc.
MX ˙ BMV ˙ US2521311074
SecurityMX:DXCM / DexCom, Inc.
InstitutionAristotle Atlantic Partners, Llc
Latest Disclosed Ownership251,485 shares
Latest Disclosed Value $ 15,793,258
Aristotle Atlantic Partners, Llc reports 6.74% increase in ownership of DXCM / DexCom, Inc.

On May 15, 2026 - Aristotle Atlantic Partners, Llc filed a 13F-HR form disclosing ownership of 251,485 shares of DexCom, Inc. (MX:DXCM) valued at $15,793,258 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 235,611 shares of DexCom, Inc.. This represents a change in shares of 6.74% 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)
2026-05-15 2026-03-31 13F DEXCOM COM 252131107 251,485 15,874 6.74 15,793 1.00 0.4178
2026-02-17 2025-12-31 13F DEXCOM COM 252131107 235,611 42,334 21.90 15,638 20.24 0.7154
2025-11-14 2025-09-30 13F DEXCOM COM 252131107 193,277 193,277 13,006 0.3773
2025-02-14 2024-12-31 13F DEXCOM COM 252131107 0 -199,445 -100.00 0 -100.00
2024-11-14 2024-09-30 13F DEXCOM COM 252131107 199,445 191 0.10 13,371 -40.82 0.4157
2024-08-14 2024-06-30 13F DEXCOM COM 252131107 199,254 -1,208 -0.60 22,591 -18.75 0.7320
2024-05-15 2024-03-31 13F DEXCOM COM 252131107 200,462 -2,692 -1.33 27,804 10.29 0.9075
2024-02-14 2023-12-31 13F DEXCOM COM 252131107 203,154 2,323 1.16 25,209 34.54 0.8872
2023-11-14 2023-09-30 13F DEXCOM COM 252131107 200,831 -1,443 -0.71 18,738 -27.92 0.7503
2023-08-14 2023-06-30 13F DEXCOM COM 252131107 202,274 36,544 22.05 25,994 35.01 0.9789
2023-05-15 2023-03-31 13F DEXCOM COM 252131107 165,730 50 0.03 19,255 2.63 0.9902
2023-02-14 2022-12-31 13F DEXCOM COM 252131107 165,680 -17 -0.01 18,762 40.58 1.0509
2022-11-14 2022-09-30 13F DEXCOM COM 252131107 165,697 1,277 0.78 13,345 8.90 0.8118
2022-08-15 2022-06-30 13F DEXCOM COM 252131107 164,420 124,044 307.22 12,254 -40.68 0.9425
2022-05-16 2022-03-31 13F DEXCOM COM 252131107 40,376 160 0.40 20,656 -4.34 1.2783
2022-02-14 2021-12-31 13F DEXCOM COM 252131107 40,216 194 0.48 21,594 -1.33 1.2536
2021-11-15 2021-09-30 13F DEXCOM COM 252131107 40,022 319 0.80 21,886 29.10 1.4482
2021-08-16 2021-06-30 13F DEXCOM COM 252131107 39,703 39 0.10 16,953 18.93 1.1182
2021-05-17 2021-03-31 13F DEXCOM COM 252131107 39,664 38 0.10 14,255 -2.70 1.0424
2021-02-16 2020-12-31 13F DEXCOM COM 252131107 39,626 924 2.39 14,651 -8.17 1.1306
2020-11-16 2020-09-30 13F DEXCOM COM 252131107 38,702 36 0.09 15,954 1.78 1.4053
2020-08-14 2020-06-30 13F DEXCOM COM 252131107 38,666 10,124 35.47 15,675 103.94 1.5057
2020-05-14 2020-03-31 13F DEXCOM COM 252131107 28,542 28,542 7,686 1.1739
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.