DexCom, Inc.
MX ˙ BMV ˙ US2521311074
SecurityMX:DXCM / DexCom, Inc.
InstitutionProShare Advisors LLC
Latest Disclosed Ownership551,281 shares
Latest Disclosed Value $ 34,620,448
ProShare Advisors LLC reports 19.47% decrease in ownership of DXCM / DexCom, Inc.

On April 24, 2026 - ProShare Advisors LLC filed a 13F-HR form disclosing ownership of 551,281 shares of DexCom, Inc. (MX:DXCM) valued at $34,620,448 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 6, 2026 disclosing 684,608 shares of DexCom, Inc.. This represents a change in shares of -19.47% 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)
2026-04-24 2026-03-31 13F DEXCOM COM 252131107 551,281 -133,327 -19.47 34,620 -23.81 0.0513
2026-02-06 2025-12-31 13F DEXCOM COM 252131107 684,608 190,461 38.54 45,437 36.65 0.0802
2025-11-06 2025-09-30 13F DEXCOM COM 252131107 494,147 -109,640 -18.16 33,251 -36.91 0.0696
2025-08-07 2025-06-30 13F DEXCOM COM 252131107 603,787 28,207 4.90 52,705 34.09 0.1052
2025-05-08 2025-03-31 13F DEXCOM COM 252131107 575,580 69,159 13.66 39,306 -0.20 0.0887
2025-02-14 2024-12-31 13F DEXCOM COM 252131107 506,421 70,303 16.12 39,384 34.71 0.0900
2024-11-14 2024-09-30 13F DEXCOM COM 252131107 436,118 32,376 8.02 29,237 -36.13 0.0717
2024-08-13 2024-06-30 13F DEXCOM COM 252131107 403,742 -30,310 -6.98 45,776 -23.96 0.1225
2024-05-08 2024-03-31 13F DEXCOM COM 252131107 434,052 74,199 20.62 60,203 34.82 0.1601
2024-02-14 2023-12-31 13F DEXCOM COM 252131107 359,853 -65,987 -15.50 44,654 12.39 0.1365
2023-11-13 2023-09-30 13F DEXCOM COM 252131107 425,840 53,215 14.28 39,731 -17.03 0.1239
2023-08-10 2023-06-30 13F DEXCOM COM 252131107 372,625 -25,310 -6.36 47,886 3.58 0.1389
2023-05-26 2023-03-31 13F/A-1 DEXCOM COM 252131107 397,935 49,391 14.17 46,232 17.13 0.1413
2023-05-12 2023-03-31 13F DEXCOM COM 252131107 397,935 49,391 46,232 0.1470
2023-02-02 2022-12-31 13F DEXCOM COM 252131107 348,544 -41,329 -10.60 39,469 25.69 0.1386
2022-11-07 2022-09-30 13F DEXCOM COM 252131107 389,873 -90,153 -18.78 31,403 -12.23 0.1205
2022-08-01 2022-06-30 13F DEXCOM COM 252131107 480,026 301,899 169.49 35,777 -60.74 0.1187
2022-05-10 2022-03-31 13F DEXCOM COM 252131107 178,127 -5,892 -3.20 91,130 -7.77 0.1958
2022-02-08 2021-12-31 13F DEXCOM COM 252131107 184,019 67,413 57.81 98,808 54.95 0.1939
2021-11-12 2021-09-30 13F DEXCOM COM 252131107 116,606 9,887 9.26 63,767 39.94 0.1792
2021-08-13 2021-06-30 13F DEXCOM COM 252131107 106,719 -8,384 -7.28 45,569 10.16 0.1332
2021-05-14 2021-03-31 13F DEXCOM COM 252131107 115,103 18,302 18.91 41,367 15.59 0.1301
2021-02-09 2020-12-31 13F DEXCOM COM 252131107 96,801 16,906 21.16 35,789 8.67 0.1331
2020-11-13 2020-09-30 13F DEXCOM COM 252131107 79,895 14,985 23.09 32,935 25.16 0.1522
2020-08-03 2020-06-30 13F DEXCOM COM 252131107 64,910 63,254 3,819.69 26,315 5,800.22 0.1406
2020-05-15 2020-03-31 13F DEXCOM COM 252131107 1,656 -524 -24.04 446 -6.50 0.0032
2020-02-12 2019-12-31 13F DEXCOM COM 252131107 2,180 35 1.63 477 49.06 0.0022
2019-11-12 2019-09-30 13F DEXCOM COM 252131107 2,145 -70 -3.16 320 -3.61 0.0018
2019-08-13 2019-06-30 13F DEXCOM COM 252131107 2,215 -1,394 -38.63 332 -22.79 0.0020
2019-05-15 2019-03-31 13F DEXCOM COM 252131107 3,609 998 38.22 430 37.38 0.0026
2019-02-14 2018-12-31 13F DEXCOM COM 252131107 2,611 -508 -16.29 313 -29.82 0.0022
2018-11-14 2018-09-30 13F DEXCOM COM 252131107 3,119 1,018 48.45 446 123.00 0.0030
2018-08-13 2018-06-30 13F DEXCOM COM 252131107 2,101 2,101 -32.64 200 -55.16 0.0013
2016-11-10 2016-09-30 13F DEXCOM COM 252131107 0 -2,765 -100.00 0 -100.00
2016-08-12 2016-06-30 13F DEXCOM COM 252131107 2,765 2,765 0.00 219 0.0028
2016-05-06 2016-03-31 13F DEXCOM COM 252131107 0 -3,043 -100.00 0 -100.00
2016-02-05 2015-12-31 13F DEXCOM COM 252131107 3,043 114 3.89 249 -0.80 0.0030
2015-11-06 2015-09-30 13F DEXCOM COM 252131107 2,929 -1,134 -27.91 251 -22.77 0.0035
2015-08-11 2015-06-30 13F DEXCOM COM 252131107 4,063 -14,195 -77.75 325 -71.44 0.0045
2015-05-08 2015-03-31 13F DEXCOM COM 252131107 18,258 18,258 349.37 1,138 250.15 0.0134
2015-01-30 2014-12-31 13F DEXCOM COM 252131107 0 -32,026 -100.00 0 -100.00
2014-11-06 2014-09-30 13F DEXCOM COM 252131107 32,026 -4,483 -12.28 1,281 -11.53 0.0170
2014-08-08 2014-06-30 13F DEXCOM COM 252131107 36,509 -35,065 -48.99 1,448 -51.08 0.0188
2014-05-07 2014-03-31 13F DEXCOM COM 252131107 71,574 71,574 96.04 2,960 104.42 0.0370
2014-02-04 2013-12-31 13F DEXCOM COM 252131107 0 -44,661 -100.00 0 -100.00
2013-11-07 2013-09-30 13F DEXCOM COM 252131107 44,661 34 0.08 1,261 25.85 0.0299
2013-07-25 2013-06-30 13F DEXCOM COM 252131107 44,627 44,627 1,002 0.0197
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.