DexCom, Inc.
MX ˙ BMV ˙ US2521311074
SecurityMX:DXCM / DexCom, Inc.
InstitutionQuadrant Capital Group Llc
Latest Disclosed Ownership13,614 shares
Latest Disclosed Value $ 854,960
Quadrant Capital Group Llc reports 19.08% increase in ownership of DXCM / DexCom, Inc.

On May 13, 2026 - Quadrant Capital Group Llc filed a 13F-HR/A form disclosing ownership of 13,614 shares of DexCom, Inc. (MX:DXCM) valued at $854,960 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 12, 2026 disclosing 11,433 shares of DexCom, Inc.. This represents a change in shares of 19.08% 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)
2026-05-13 2026-03-31 13F/A-1 DEXCOM COM 252131107 13,614 2,181 19.08 855 12.66 0.0256
2026-05-11 2026-03-31 13F DEXCOM COM 252131107 13,614 2,181 49 0.0369
2026-02-12 2025-12-31 13F DEXCOM COM 252131107 11,433 8,350 270.84 759 266.18 0.0229
2025-11-13 2025-09-30 13F DEXCOM COM 252131107 3,083 -6,500 -67.83 207 -75.24 0.0067
2025-08-13 2025-06-30 13F DEXCOM COM 252131107 9,583 2,437 34.10 837 71.31 0.0301
2025-05-13 2025-03-31 13F DEXCOM COM 252131107 7,146 3,933 122.41 488 95.98 0.0181
2025-02-13 2024-12-31 13F DEXCOM COM 252131107 3,213 289 9.88 250 27.04 0.0172
2024-11-12 2024-09-30 13F DEXCOM COM 252131107 2,924 -2,579 -46.87 196 -68.54 0.0136
2024-08-12 2024-06-30 13F DEXCOM COM 252131107 5,503 126 2.34 624 -16.38 0.0463
2024-05-15 2024-03-31 13F DEXCOM COM 252131107 5,377 950 21.46 746 35.70 0.0589
2024-02-08 2023-12-31 13F DEXCOM COM 252131107 4,427 827 22.97 549 63.88 0.0472
2023-11-14 2023-09-30 13F DEXCOM COM 252131107 3,600 -366 -9.23 336 -34.18 0.0336
2023-08-10 2023-06-30 13F DEXCOM COM 252131107 3,966 -131 -3.20 510 7.16 0.0506
2023-05-11 2023-03-31 13F DEXCOM COM 252131107 4,097 53 1.31 476 3.94 0.0496
2023-02-13 2022-12-31 13F DEXCOM COM 252131107 4,044 792 24.35 458 74.43 0.0519
2022-11-10 2022-09-30 13F DEXCOM COM 252131107 3,252 1,428 78.29 262 92.65 0.0346
2022-08-09 2022-06-30 13F DEXCOM COM 252131107 1,824 1,227 205.53 136 -55.56 0.0183
2022-05-06 2022-03-31 13F DEXCOM COM 252131107 597 36 6.42 306 1.66 0.0371
2022-02-01 2021-12-31 13F DEXCOM COM 252131107 561 29 5.45 301 3.44 0.0359
2021-11-12 2021-09-30 13F DEXCOM COM 252131107 532 51 10.60 291 41.95 0.0406
2021-08-09 2021-06-30 13F DEXCOM COM 252131107 481 80 19.95 205 42.36 0.0297
2021-05-12 2021-03-31 13F DEXCOM COM 252131107 401 65 19.35 144 16.13 0.0234
2021-02-16 2020-12-31 13F DEXCOM COM 252131107 336 -81 -19.42 124 -27.91 0.0230
2020-11-13 2020-09-30 13F DEXCOM COM 252131107 417 -33 -7.33 172 -5.49 0.0375
2020-08-13 2020-06-30 13F DEXCOM COM 252131107 450 -269 -37.41 182 -6.19 0.0403
2020-05-15 2020-03-31 13F DexCom Com 252131107 719 83 13.05 194 40.58 0.0325
2020-03-19 2019-12-31 13F/A-1 DexCom Com 252131107 636 5 0.79 138 48.39 0.0166
2020-02-03 2019-12-31 13F DexCom Com 252131107 636 5 138 466.3200
2019-10-24 2019-09-30 13F DexCom COM 252131107 631 0 0.00 93 -1.06 0.0143
2019-07-24 2019-06-30 13F DexCom COM 252131107 631 0 0.00 94 28.77 0.0149
2019-04-29 2019-03-31 13F DexCom COM 252131107 631 449 246.70 73 247.62 0.0128
2019-01-17 2018-12-31 13F DexCom COM 252131107 182 0 0.00 21 -16.00 0.0056
2018-10-29 2018-09-30 13F DexCom COM 252131107 182 0 0.00 25 56.25 0.0071
2018-08-08 2018-06-30 13F DexCom COM 252131107 182 0 0.00 16 33.33 0.0056
2018-05-10 2018-03-31 13F DexCom COM 252131107 182 0 0.00 12 33.33 0.0044
2018-01-31 2017-12-31 13F Dexcom COM 252131107 182 102 127.50 9 200.00 0.0036
2017-10-13 2017-09-30 13F Dexcom COM 252131107 80 -171 -68.13 3 -75.00 0.0012
2017-08-14 2017-06-30 13F Dexcom COM 252131107 251 203 422.92 12 200.00 0.0053
2017-04-10 2017-03-31 13F Dexcom COM 252131107 48 -133 -73.48 4 -55.56 0.0018
2017-01-11 2016-12-31 13F Dexcom COM 252131107 181 -3 -1.63 9 -40.00 0.0045
2016-10-25 2016-09-30 13F Dexcom COM 252131107 184 0 0.00 15 15.38 0.0098
2016-07-28 2016-06-30 13F Dexcom COM 252131107 184 0 0.00 13 8.33 0.0089
2016-04-27 2016-03-31 13F Dexcom COM 252131107 184 -113 -38.05 12 -50.00 0.0078
2016-01-28 2015-12-31 13F Dexcom COM 252131107 297 13 4.58 24 4.35 0.0166
2015-10-28 2015-09-30 13F Dexcom COM 252131107 284 206 264.10 23 283.33 0.0159
2015-08-12 2015-06-30 13F Dexcom COM 252131107 78 78 6 0.0038
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.