DexCom, Inc.
MX ˙ BMV ˙ US2521311074
SecurityMX:DXCM / DexCom, Inc.
InstitutionLazard Asset Management Llc
Latest Disclosed Ownership81,156 shares
Latest Disclosed Value $ 5,096,597
Lazard Asset Management Llc reports 37.15% increase in ownership of DXCM / DexCom, Inc.

On May 15, 2026 - Lazard Asset Management Llc filed a 13F-HR form disclosing ownership of 81,156 shares of DexCom, Inc. (MX:DXCM) valued at $5,096,597 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 59,174 shares of DexCom, Inc.. This represents a change in shares of 37.15% 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 81,156 21,982 37.15 5,097 29.77 0.0044
2026-02-17 2025-12-31 13F DEXCOM COM 252131107 59,174 6,607 12.57 3,927 11.03 0.0067
2025-11-14 2025-09-30 13F DEXCOM COM 252131107 52,567 8,999 20.66 3,537 117,800.00 0.0048
2025-08-14 2025-06-30 13F DEXCOM Common Stock 252131107 43,568 464 1.08 4 50.00 0.0052
2025-05-15 2025-03-31 13F DEXCOM Common Stock 252131107 43,104 -4,894 -10.20 3 -33.33 0.0045
2025-02-14 2024-12-31 13F DEXCOM Common Stock 252131107 47,998 6,814 16.55 4 50.00 0.0055
2024-11-14 2024-09-30 13F DEXCOM Common Stock 252131107 41,184 7,761 23.22 3 -33.33 0.0037
2024-08-14 2024-06-30 13F DEXCOM Common Stock 252131107 33,423 1,000 3.08 4 -25.00 0.0048
2024-07-09 2024-03-31 13F/A-1 DEXCOM Common Stock 252131107 32,423 -14,582 -31.02 4 -20.00 0.0055
2024-05-14 2024-03-31 13F DEXCOM Common Stock 252131107 32,423 -14,582 4 0.0055
2024-02-14 2023-12-31 13F DEXCOM Common Stock 252131107 47,005 640 1.38 6 25.00 0.0074
2023-11-14 2023-09-30 13F DEXCOM Common Stock 252131107 46,365 -828 -1.75 4 -33.33 0.0059
2023-08-15 2023-06-30 13F DEXCOM Common Stock 252131107 47,193 747 1.61 6 20.00 0.0075
2023-05-15 2023-03-31 13F DEXCOM Common Stock 252131107 46,446 -31,357 -40.30 5 -99.94 0.0071
2023-02-15 2022-12-31 13F DEXCOM Common Stock 252131107 77,803 -58,635 -42.98 8,810 -19.81 0.0121
2022-11-14 2022-09-30 13F DEXCOM Common Stock 252131107 136,438 327 0.24 10,987 8.31 0.0161
2022-08-09 2022-06-30 13F DEXCOM Common Stock 252131107 136,111 113,769 509.22 10,144 -11.25 0.0137
2022-05-13 2022-03-31 13F DEXCOM Common Stock 252131107 22,342 3,907 21.19 11,430 15.49 0.0132
2022-02-09 2021-12-31 13F DEXCOM Common Stock 252131107 18,435 5,798 45.88 9,897 43.23 0.0105
2021-11-15 2021-09-30 13F DEXCOM Common Stock 252131107 12,637 -1,613 -11.32 6,910 13.58 0.0078
2021-08-12 2021-06-30 13F DEXCOM Common Stock 252131107 14,250 12,647 788.96 6,084 958.09 0.0068
2021-05-14 2021-03-31 13F DEXCOM Common Stock 252131107 1,603 439 37.71 575 34.03 0.0007
2021-02-11 2020-12-31 13F DEXCOM Common Stock 252131107 1,164 112 10.65 429 -0.92 0.0005
2020-11-13 2020-09-30 13F DEXCOM Common Stock 252131107 1,052 0 0.00 433 1.64 0.0006
2020-08-13 2020-06-30 13F DEXCOM Common Stock 252131107 1,052 974 1,248.72 426 1,928.57 0.0007
2020-05-14 2020-03-31 13F DEXCOM Common Stock 252131107 78 78 -92.59 21 -95.07 0.0000
2020-02-13 2019-12-31 13F DEXCOM Common Stock 252131107 0 -3,512 -100.00 0 -100.00
2019-11-14 2019-09-30 13F DEXCOM Common Stock 252131107 3,512 -2,043 -36.78 524 -37.02 0.0009
2019-08-14 2019-06-30 13F DEXCOM Common Stock 252131107 5,555 0 0.00 832 25.87 0.0013
2019-08-28 2019-03-31 13F/A-1 DEXCOM Common Stock 252131107 5,555 5,555 0.00 661 -20.55 0.0011
2019-05-13 2019-03-31 13F DEXCOM Common Stock 252131107 5,555 5,555 661
2019-08-30 2018-06-30 13F/A-1 DEXCOM Common Stock 252131107 0 -14,201 -100.00 0 -100.00
2019-08-28 2018-03-31 13F/A-1 DEXCOM Common Stock 252131107 14,201 14,201 1,053 0.0018
2018-05-14 2018-03-31 13F DEXCOM Common Stock 252131107 14,201 14,201 1,053
2016-05-12 2016-03-31 13F DEXCOM Common Stock 252131107 0 0 0 0.0000
2019-07-15 2015-09-30 13F/A-1 DEXCOM Common Stock 252131107 0 -900 -100.00 0 -100.00
2019-07-08 2015-06-30 13F/A-1 DEXCOM Common Stock 252131107 900 85 10.43 71 42.00 0.0001
2015-08-13 2015-06-30 13F DEXCOM Common Stock 252131107 900 85 71
2015-06-09 2015-03-31 13F/A-1 DEXCOM Common Stock 252131107 815 725 805.56 50 1,150.00 0.0001
2015-05-15 2015-03-31 13F DEXCOM Common Stock 252131107 815 50
2019-08-29 2014-12-31 13F/A-3 DEXCOM Common Stock 252131107 90 0 0.00 4 33.33 0.0000
2015-05-20 2014-12-31 13F/A-1 DEXCOM Common Stock 252131107 90 0 4 0.0000
2015-06-09 2014-12-31 13F/A-2 DEXCOM Common Stock 252131107 90 0 4 0.0000
2015-02-12 2014-12-31 13F DEXCOM Common Stock 252131107 90 4
2014-11-07 2014-09-30 13F DEXCOM Common Stock 252131107 90 90 3 0.0000
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.