DexCom, Inc.
US ˙ NasdaqGS ˙ US2521311074

SecurityDXCM / DexCom, Inc.
InstitutionMacquarie Group Ltd
Latest Disclosed Ownership703,043 shares
Latest Disclosed Value $ 44,151,101
Macquarie Group Ltd reports 772.43% increase in ownership of DXCM / DexCom, Inc.

On May 15, 2026 - Macquarie Group Ltd filed a 13F-HR form disclosing ownership of 703,043 shares of DexCom, Inc. (US:DXCM) valued at $44,151,100 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 80,584 shares of DexCom, Inc.. This represents a change in shares of 772.43% during the quarter. The current value of the position is $51,160,439 USD.

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 703,043 622,459 772.43 44,151 725.56 0.2056
2026-02-13 2025-12-31 13F DEXCOM COM 252131107 80,584 -60,518 -42.89 5,348 -43.67 0.0234
2025-11-13 2025-09-30 13F DEXCOM COM 252131107 141,102 6,430 4.77 9,495 -19.23 0.0111
2025-08-14 2025-06-30 13F DEXCOM COM 252131107 134,672 27,342 25.47 11,756 60.39 0.0144
2025-08-14 2025-03-31 13F/A-1 DEXCOM COM 252131107 107,330 10,757 11.14 7,329 15.76 0.0091
2025-05-15 2025-03-31 13F DEXCOM COM 252131107 129,401 32,828 5,825 0.0048
2025-02-14 2024-12-31 13F DEXCOM COM 252131107 96,573 -1,439,719 -93.71 6,332 -93.85 0.0077
2024-11-14 2024-09-30 13F DEXCOM COM 252131107 1,536,292 -502,679 -24.65 102,993 -55.45 0.1112
2024-08-09 2024-06-30 13F DEXCOM COM 252131107 2,038,971 -177,711 -8.02 231,179 -24.81 0.2651
2024-05-14 2024-03-31 13F DEXCOM COM 252131107 2,216,682 -576,189 -20.63 307,454 -11.29 0.3487
2024-02-14 2023-12-31 13F DEXCOM COM 252131107 2,792,871 -240,608 -7.93 346,567 22.45 0.4003
2023-11-14 2023-09-30 13F DEXCOM COM 252131107 3,033,479 -84,531 -2.71 283,024 -29.37 0.3555
2023-10-27 2023-06-30 13F/A-2 DEXCOM COM 252131107 3,118,010 -181,857 -5.51 400,696 4.52 0.4581
2023-10-12 2023-06-30 13F/A-1 DEXCOM COM 252131107 3,118,010 -181,857 400,696 0.4028
2023-08-14 2023-06-30 13F DEXCOM COM 252131107 3,118,010 -181,857 400,696 0.4065
2023-06-01 2023-03-31 13F/A-1 DEXCOM COM 252131107 3,299,867 -163,524 -4.72 383,378 -2.25 0.4554
2023-05-15 2023-03-31 13F DEXCOM COM 252131107 3,299,867 -163,524 383,378 0.3519
2023-02-21 2022-12-31 13F DEXCOM COM 252131107 3,463,391 -192,010 -5.25 392,194 33.21 0.4631
2022-11-14 2022-09-30 13F DEXCOM COM 252131107 3,655,401 373,898 11.39 294,407 20.33 0.3611
2022-08-17 2022-06-30 13F/A-1 DEXCOM COM 252131107 3,281,503 2,195,727 202.23 244,658 -55.96 0.2747
2022-08-15 2022-06-30 13F DEXCOM COM 252131107 3,281,503 2,195,727 244,658 0.0876
2022-05-16 2022-03-31 13F DEXCOM COM 252131107 1,085,776 -39,753 -3.53 555,483 -8.09 0.4225
2022-02-11 2021-12-31 13F DEXCOM COM 252131107 1,125,529 238,539 26.89 604,353 24.59 0.5036
2021-11-12 2021-09-30 13F DEXCOM COM 252131107 886,990 -63,001 -6.63 485,059 19.58 0.4134
2021-08-13 2021-06-30 13F DEXCOM COM 252131107 949,991 901,709 1,867.59 405,646 2,237.61 0.3331
2021-05-14 2021-03-31 13F DEXCOM COM 252131107 48,282 -1,555 -3.12 17,353 -5.82 0.0245
2021-02-16 2020-12-31 13F DEXCOM COM 252131107 49,837 6,225 14.27 18,426 2.50 0.0269
2020-11-13 2020-09-30 13F DEXCOM COM 252131107 43,612 -2,094 -4.58 17,977 -2.98 0.0304
2020-08-11 2020-06-30 13F DEXCOM COM 252131107 45,706 -109,965 -70.64 18,529 -55.80 0.0319
2020-05-15 2020-03-31 13F DEXCOM COM 252131107 155,671 27,574 21.53 41,917 49.60 0.0861
2020-03-18 2019-12-31 13F/A-2 DEXCOM COM 252131107 128,097 -53,577 -29.49 28,020 3.34 0.0400
2020-02-28 2019-12-31 13F/A-1 DEXCOM COM 252131107 128,097 0 28,020 0.0405
2020-02-14 2019-12-31 13F DEXCOM COM 252131107 128,097 -53,577 28,020 35,162.7254
2019-11-14 2019-09-30 13F DEXCOM COM 252131107 181,674 -3,770 -2.03 27,114 -2.42 0.0454
2019-11-06 2019-06-30 13F/A-2 DEXCOM COM 252131107 185,444 10,617 6.07 27,787 33.45 0.0469
2019-09-24 2019-06-30 13F/A-1 DEXCOM COM 252131107 185,444 0 27,787 0.0473
2019-08-14 2019-06-30 13F DEXCOM COM 252131107 185,444 10,617 27,787
2019-05-15 2019-03-31 13F DEXCOM COM 252131107 174,827 -8,546 -4.66 20,822 -5.22 0.0355
2019-02-15 2018-12-31 13F DEXCOM COM 252131107 183,373 -12,875 -6.56 21,968 -21.74 0.0424
2018-11-15 2018-09-30 13F DEXCOM COM 252131107 196,248 -40,093 -16.96 28,071 25.05 0.0457
2019-03-21 2018-06-30 13F/A-1 DEXCOM COM 252131107 236,341 29,825 14.44 22,448 46.58 0.0387
2018-08-14 2018-06-30 13F DEXCOM COM 252131107 236,341 29,825 22,448
2018-05-11 2018-03-31 13F DEXCOM COM 252131107 206,516 18,339 9.75 15,315 41.82 0.0279
2018-02-14 2017-12-31 13F DEXCOM COM 252131107 188,177 -41,054 -17.91 10,799 -3.71 0.0191
2017-11-08 2017-09-30 13F DEXCOM COM 252131107 229,231 -13,367 -5.51 11,215 -36.80 0.0201
2017-08-14 2017-06-30 13F DEXCOM COM 252131107 242,598 97,479 67.17 17,746 44.32 0.0324
2017-05-15 2017-03-31 13F DexCom COM 252131107 145,119 -16,246 -10.07 12,296 27.64 0.0223
2017-03-30 2016-12-31 13F/A-1 DexCom COMMON 252131107 161,365 -37,456 -18.84 9,633 -44.73 0.0184
2017-02-15 2016-12-31 13F DexCom COMMON 252131107 161,365 9,633
2016-11-15 2016-09-30 13F DEXCOM COMMON 252131107 198,821 -22,519 -10.17 17,429 -0.74 0.0335
2016-09-14 2016-06-30 13F/A-1 DEXCOM COMMON 252131107 221,340 83,185 60.21 17,559 87.16 0.0345
2016-08-15 2016-06-30 13F DEXCOM COMMON 252131107 221,340 17,559
2016-05-16 2016-03-31 13F DEXCOM COMMON 252131107 138,155 65,267 89.54 9,382 57.15 0.0189
2016-02-16 2015-12-31 13F DEXCOM COMMON 252131107 72,888 43,530 148.27 5,970 136.81 0.0123
2015-11-16 2015-09-30 13F DEXCOM COMMON 252131107 29,358 -126,775 -81.20 2,521 -79.81 0.0054
2015-08-21 2015-06-30 13F/A-1 DexCom COM 252131107 156,133 -135,207 -46.41 12,488 -31.24 0.0247
2015-08-14 2015-06-30 13F DEXCOM COM 252131107 158,833 12,704
2015-05-18 2015-03-31 13F DEXCOM COMMON 252131107 291,340 20,741 7.66 18,162 21.93 0.0356
2015-02-17 2014-12-31 13F DEXCOM COMMON 252131107 270,599 40,128 17.41 14,896 61.61 0.0307
2014-11-14 2014-09-30 13F DEXCOM COMMON 252131107 230,471 40,308 21.20 9,217 22.21 0.0198
2014-08-14 2014-06-30 13F DEXCOM COMMON 252131107 190,163 125,871 195.78 7,542 183.64 0.0168
2014-05-15 2014-03-31 13F DEXCOM Common 252131107 64,292 -6,888 -9.68 2,659 5.52 0.0046
2014-02-14 2013-12-31 13F DEXCOM Common Stock 252131107 71,180 9,541 15.48 2,520 44.83 0.0045
2013-11-14 2013-09-30 13F DEXCOM Common Stock 252131107 61,639 10,529 20.60 1,740 51.70 0.0034
2013-08-16 2013-06-30 13F/A-1 DEXCOM COMMON 252131107 51,110 51,110 1,147 0.0025
2013-08-14 2013-06-30 13F DEXCOM COMMON 252131107 51,110 1,147 0.0025
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.