DexCom, Inc.
MX ˙ BMV ˙ US2521311074
SecurityMX:DXCM / DexCom, Inc.
InstitutionPrincipal Financial Group Inc
Latest Disclosed Ownership755,521 shares
Latest Disclosed Value $ 47,446,718
Principal Financial Group Inc reports 31.05% increase in ownership of DXCM / DexCom, Inc.

On May 4, 2026 - Principal Financial Group Inc filed a 13F-HR form disclosing ownership of 755,521 shares of DexCom, Inc. (MX:DXCM) valued at $47,446,718 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 2, 2026 disclosing 576,517 shares of DexCom, Inc.. This represents a change in shares of 31.05% 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)
2026-05-04 2026-03-31 13F DEXCOM COM 252131107 755,521 179,004 31.05 47,447 24.00 0.0129
2026-02-02 2025-12-31 13F DEXCOM COM 252131107 576,517 10,606 1.87 38,263 0.48 0.0195
2025-11-04 2025-09-30 13F DEXCOM COM 252131107 565,911 -229,965 -28.89 38,080 -45.19 0.0192
2025-08-08 2025-06-30 13F DEXCOM COM 252131107 795,876 -9,041 -1.12 69,472 26.39 0.0367
2025-04-28 2025-03-31 13F DEXCOM COM 252131107 804,917 219,965 37.60 54,968 20.83 0.0308
2025-01-31 2024-12-31 13F DEXCOM COM 252131107 584,952 -94,215 -13.87 45,492 -0.09 0.0248
2024-10-31 2024-09-30 13F DEXCOM COM 252131107 679,167 -95,415 -12.32 45,531 -48.16 0.0251
2024-07-29 2024-06-30 13F DEXCOM COM 252131107 774,582 -24,217 -3.03 87,822 -20.73 0.0522
2024-04-29 2024-03-31 13F DEXCOM COM 252131107 798,799 18,678 2.39 110,793 14.45 0.0651
2024-02-07 2023-12-31 13F DEXCOM COM 252131107 780,121 -30,701 -3.79 96,805 27.97 0.0617
2023-11-02 2023-09-30 13F DEXCOM COM 252131107 810,822 775 0.10 75,650 -27.33 0.0544
2023-08-07 2023-06-30 13F DEXCOM COM 252131107 810,047 87,822 12.16 104,099 24.06 0.0711
2023-05-09 2023-03-31 13F DEXCOM COM 252131107 722,225 -20,074 -2.70 83,908 -0.18 0.0600
2023-02-09 2022-12-31 13F DEXCOM COM 252131107 742,299 151,651 25.68 84,058 76.70 0.0633
2022-11-09 2022-09-30 13F DEXCOM COM 252131107 590,648 -117,367 -16.58 47,570 -9.85 0.0378
2022-08-10 2022-06-30 13F DEXCOM COM 252131107 708,015 537,649 315.58 52,768 -39.46 0.0390
2022-05-09 2022-03-31 13F DEXCOM COM 252131107 170,366 -14,251 -7.72 87,159 -12.08 0.0346
2022-05-09 2022-03-31 13F DEXCOM COM 252131107 160,833 82,282
2022-02-09 2021-12-31 13F DEXCOM COM 252131107 184,617 7,476 4.22 99,130 2.33 0.0592
2021-11-09 2021-09-30 13F DEXCOM COM 252131107 177,141 21,435 13.77 96,872 45.70 0.0632
2021-08-10 2021-06-30 13F DEXCOM COM 252131107 155,706 5,716 3.81 66,487 23.34 0.0430
2021-05-10 2021-03-31 13F DEXCOM COM 252131107 149,990 -9,686 -6.07 53,905 -8.69 0.0380
2021-02-23 2020-12-31 13F/A-1 DEXCOM COM 252131107 159,676 -5,981 -3.61 59,035 -13.55 0.0437
2021-02-08 2020-12-31 13F DEXCOM COM 252131107 159,676 -5,981 59,035 23,225.2788
2020-11-06 2020-09-30 13F DEXCOM COM 252131107 165,657 -4,820 -2.83 68,289 -1.19 0.0575
2020-08-05 2020-06-30 13F DEXCOM COM 252131107 170,477 125,283 277.21 69,111 467.93 0.0613
2020-05-12 2020-03-31 13F DEXCOM COM 252131107 45,194 15,683 53.14 12,169 88.52 0.0135
2020-02-05 2019-12-31 13F DEXCOM COM 252131107 29,511 -5,149 -14.86 6,455 24.78 0.0054
2019-11-13 2019-09-30 13F DEXCOM COM 252131107 34,660 78 0.23 5,173 -0.17 0.0046
2019-08-12 2019-06-30 13F DEXCOM COM 252131107 34,582 -31,150 -47.39 5,182 -33.81 0.0047
2019-05-10 2019-03-31 13F DEXCOM COM 252131107 65,732 7,834 13.53 7,829 12.87 0.0073
2019-02-14 2018-12-31 13F DEXCOM COM 252131107 57,898 -2,057 -3.43 6,936 -19.11 0.0074
2018-11-14 2018-09-30 13F DEXCOM COM 252131107 59,955 2,242 3.88 8,575 56.45 0.0076
2018-08-13 2018-06-30 13F DEXCOM COM 252131107 57,713 24,244 72.44 5,481 120.83 0.0050
2018-05-14 2018-03-31 13F DEXCOM COM 252131107 33,469 2,459 7.93 2,482 39.52 0.0024
2018-02-12 2017-12-31 13F DEXCOM COM 252131107 31,010 -1,933 -5.87 1,779 10.36 0.0016
2017-11-02 2017-09-30 13F DEXCOM COM 252131107 32,943 31 0.09 1,612 -33.06 0.0016
2017-08-08 2017-06-30 13F DEXCOM COM 252131107 32,912 -3,085 -8.57 2,408 -21.05 0.0024
2017-05-11 2017-03-31 13F DEXCOM COM 252131107 35,997 -30,870 -46.17 3,050 -23.58 0.0037
2017-02-13 2016-12-31 13F DEXCOM COM 252131107 66,867 -4,017 -5.67 3,991 -35.77 0.0051
2016-11-10 2016-09-30 13F DEXCOM COM 252131107 70,884 -11,718 -14.19 6,214 -5.17 0.0082
2016-08-09 2016-06-30 13F DEXCOM COM 252131107 82,602 7,374 9.80 6,553 28.26 0.0091
2016-05-10 2016-03-31 13F DEXCOM COM 252131107 75,228 -4,554 -5.71 5,109 -21.81 0.0074
2016-02-09 2015-12-31 13F DEXCOM COM 252131107 79,782 9,277 13.16 6,534 7.95 0.0097
2015-11-12 2015-09-30 13F/A-1 DEXCOM COM 252131107 70,505 -80,383 -53.27 6,053 -49.84 0.0095
2015-11-09 2015-09-30 13F DEXCOM COM 252131107 70,505 6,053
2015-08-10 2015-06-30 13F DEXCOM COM 252131107 150,888 -9,695 -6.04 12,068 20.55 0.0180
2015-05-14 2015-03-31 13F/A-1 DEXCOM COM 252131107 160,583 -2,253 -1.38 10,011 11.68 0.0149
2015-05-12 2015-03-31 13F DEXCOM COM 252131107 160,583 10,010
2015-02-12 2014-12-31 13F DEXCOM COM 252131107 162,836 -11,736 -6.72 8,964 28.41 0.0139
2014-11-13 2014-09-30 13F DEXCOM COM 252131107 174,572 600 0.34 6,981 1.17 0.0118
2014-08-12 2014-06-30 13F DEXCOM COM 252131107 173,972 -6,258 -3.47 6,900 -7.43 0.0116
2014-05-13 2014-03-31 13F DEXCOM COM 252131107 180,230 1,393 0.78 7,454 17.72 0.0133
2014-02-12 2013-12-31 13F DEXCOM COM 252131107 178,837 2,800 1.59 6,332 27.43 0.0118
2013-11-05 2013-09-30 13F DEXCOM COM 252131107 176,037 -1,443 -0.81 4,969 24.72 0.0103
2013-08-12 2013-06-30 13F DEXCOM COM 252131107 177,480 177,480 3,984 0.0088
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.