DexCom, Inc.
MX ˙ BMV ˙ US2521311074
SecurityMX:DXCM / DexCom, Inc.
InstitutionNomura Asset Management Co Ltd
Latest Disclosed Ownership150,119 shares
Latest Disclosed Value $ 9,427,473
Nomura Asset Management Co Ltd reports 4.24% increase in ownership of DXCM / DexCom, Inc.

On May 11, 2026 - Nomura Asset Management Co Ltd filed a 13F-HR form disclosing ownership of 150,119 shares of DexCom, Inc. (MX:DXCM) valued at $9,427,473 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 10, 2026 disclosing 144,019 shares of DexCom, Inc.. This represents a change in shares of 4.24% 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)
2026-05-11 2026-03-31 13F DEXCOM COM 252131107 150,119 6,100 4.24 9,427 -1.37 0.0152
2026-02-10 2025-12-31 13F DEXCOM COM 252131107 144,019 3,040 2.16 9,559 0.76 0.0242
2025-11-12 2025-09-30 13F DEXCOM COM 252131107 140,979 -18,931 -11.84 9,486 -32.04 0.0248
2025-08-11 2025-06-30 13F DEXCOM COM 252131107 159,910 4,568 2.94 13,959 31.58 0.0383
2025-05-12 2025-03-31 13F DEXCOM COM 252131107 155,342 5,866 3.92 10,608 -8.74 0.0325
2025-02-12 2024-12-31 13F DEXCOM COM 252131107 149,476 -4,705 -3.05 11,625 12.46 0.0350
2024-11-15 2024-09-30 13F DEXCOM COM 252131107 154,181 -45,487 -22.78 10,336 -54.34 0.0319
2024-08-14 2024-06-30 13F DEXCOM COM 252131107 199,668 13,828 7.44 22,638 -12.17 0.0772
2024-05-13 2024-03-31 13F DEXCOM COM 252131107 185,840 4,632 2.56 25,776 14.63 0.0936
2024-02-09 2023-12-31 13F DEXCOM COM 252131107 181,208 -31,303 -14.73 22,486 13.41 0.0929
2023-11-03 2023-09-30 13F DEXCOM COM 252131107 212,511 21,033 10.98 19,827 -19.42 0.0929
2023-08-14 2023-06-30 13F DEXCOM COM 252131107 191,478 7,022 3.81 24,607 14.82 0.1133
2025-01-10 2023-03-31 13F/A-1 DEXCOM COM 252131107 184,456 8,138 4.62 21,430 7.33 0.1126
2023-05-11 2023-03-31 13F DEXCOM COM 252131107 184,456 8,138 21,430 0.1126
2025-01-10 2022-12-31 13F/A-1 DEXCOM COM 252131107 176,318 2,549 1.47 19,966 42.67 0.1160
2023-02-14 2022-12-31 13F DEXCOM COM 252131107 176,318 2,549 19,966 0.1160
2025-01-10 2022-09-30 13F/A-3 DEXCOM COM 252131107 173,769 -4,294 -2.41 13,995 5.46 0.0891
2022-11-14 2022-09-30 13F/A-2 DEXCOM COM 252131107 173,769 -4,294 13,995 0.0891
2022-11-10 2022-09-30 13F/A-1 DEXCOM COM 252131107 173,769 -4,294 13,995 0.0891
2022-11-10 2022-09-30 13F DEXCOM COM 252131107 173,769 -4,294 13,995 0.0563
2025-01-10 2022-06-30 13F/A-1 DEXCOM COM 252131107 178,063 140,487 373.87 13,271 -30.96 0.0829
2022-08-12 2022-06-30 13F DEXCOM COM 252131107 178,063 140,487 13,271 0.0819
2025-01-10 2022-03-31 13F/A-1 DEXCOM COM 252131107 37,576 -1,612 -4.11 19,224 -8.64 0.1046
2022-05-13 2022-03-31 13F DEXCOM COM 252131107 37,576 -1,612 19,224 0.1046
2025-01-10 2021-12-31 13F/A-2 DEXCOM COM 252131107 39,188 17,893 84.02 21,042 80.69 0.1063
2022-02-01 2021-12-31 13F DEXCOM COM 252131107 39,188 17,893 21,042 0.1063
2025-01-10 2021-09-30 13F/A-2 DEXCOM COM 252131107 21,295 -2,100 -8.98 11,645 16.58 0.0657
2021-11-12 2021-09-30 13F DEXCOM COM 252131107 21,295 -2,100 11,645 0.0657
2025-01-10 2021-06-30 13F/A-2 DEXCOM COM 252131107 23,395 1,720 7.94 9,990 28.24 0.0578
2021-08-06 2021-06-30 13F DEXCOM COM 252131107 23,395 1,720 9,990 0.0578
2025-01-10 2021-03-31 13F/A-2 DEXCOM COM 252131107 21,675 371 1.74 7,790 -1.10 0.0496
2021-05-14 2021-03-31 13F DEXCOM COM 252131107 21,675 371 7,790 0.0496
2025-01-10 2020-12-31 13F/A-2 DEXCOM COM 252131107 21,304 1,380 6.93 7,877 -4.10 0.0530
2021-02-12 2020-12-31 13F DEXCOM COM 252131107 21,304 1,380 7,876 0.0530
2020-11-12 2020-09-30 13F DEXCOM COM 252131107 19,924 959 5.06 8,213 6.81 0.0630
2020-08-13 2020-06-30 13F DEXCOM COM 252131107 18,965 3,325 21.26 7,689 82.59 0.0651
2020-05-14 2020-03-31 13F DEXCOM COM 252131107 15,640 1,510 10.69 4,211 36.23 0.0435
2020-02-13 2019-12-31 13F DEXCOM COM 252131107 14,130 40 0.28 3,091 46.98 0.0277
2019-11-13 2019-09-30 13F DEXCOM COM 252131107 14,090 340 2.47 2,103 2.09 0.0201
2019-08-13 2019-06-30 13F DEXCOM COM 252131107 13,750 1,300 10.44 2,060 38.91 0.0204
2019-05-10 2019-03-31 13F/A-1 DEXCOM COM 252131107 12,450 0 0.00 1,483 -0.60 0.0146
2019-05-10 2019-03-31 13F DEXCOM COM 252131107 12,450 0 1,483
2019-02-12 2018-12-31 13F DEXCOM COM 252131107 12,450 12,450 0.00 1,492 0.61 0.0167
2018-11-07 2018-09-30 13F DEXCOM COM 252131107 0 0 0 0.0000
2018-08-03 2018-06-30 13F DEXCOM COM 252131107 0 0 0 0.0000
2018-02-14 2017-12-31 13F DEXCOM COM 252131107 0 -10,900 -100.00 0 -100.00
2017-11-13 2017-09-30 13F DEXCOM COM 252131107 10,900 1,500 15.96 533 -22.53 0.0069
2017-08-14 2017-06-30 13F DEXCOM COM 252131107 9,400 100 1.08 688 -12.69 0.0093
2017-06-28 2017-03-31 13F/A-1 DEXCOM COM 252131107 9,300 0 0.00 788 41.98 0.0111
2017-05-12 2017-03-31 13F DEXCOM COM 252131107 9,300 788
2017-02-14 2016-12-31 13F DEXCOM COM 252131107 9,300 9,300 555 0.0100
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.