DexCom, Inc.
MX ˙ BMV ˙ US2521311074
SecurityMX:DXCM / DexCom, Inc.
InstitutionBaird Financial Group, Inc.
Latest Disclosed Ownership466,080 shares
Latest Disclosed Value $ 29,269,824
Baird Financial Group, Inc. reports 45.10% increase in ownership of DXCM / DexCom, Inc.

On May 14, 2026 - Baird Financial Group, Inc. filed a 13F-HR form disclosing ownership of 466,080 shares of DexCom, Inc. (MX:DXCM) valued at $29,269,824 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 321,203 shares of DexCom, Inc.. This represents a change in shares of 45.10% 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)
2026-05-14 2026-03-31 13F DEXCOM COM 252131107 466,080 144,877 45.10 29,270 37.30 0.0246
2026-02-13 2025-12-31 13F DEXCOM INC COM COMMON 252131107 321,203 -181,133 -36.06 21,318 -36.93 0.0332
2025-11-13 2025-09-30 13F DEXCOM INC COM COMMON 252131107 502,336 -135,429 -21.23 33,802 -39.28 0.0544
2025-08-13 2025-06-30 13F DEXCOM INC COM COMMON 252131107 637,765 -49,243 -7.17 55,671 18.66 0.0976
2025-05-15 2025-03-31 13F DEXCOM INC COM COMMON 252131107 687,008 285,105 70.94 46,916 50.10 0.0903
2025-02-14 2024-12-31 13F DEXCOM INC COM COMMON 252131107 401,903 -62,357 -13.43 31,256 0.42 0.0598
2024-11-14 2024-09-30 13F DEXCOM INC COM COMMON 252131107 464,260 -450,293 -49.24 31,124 -69.99 0.0604
2024-08-14 2024-06-30 13F DEXCOM INC COM COMMON 252131107 914,553 -62,208 -6.37 103,692 -23.46 0.2151
2024-05-14 2024-03-31 13F DEXCOM INC COM COMMON 252131107 976,761 -13,372 -1.35 135,477 10.26 0.2841
2024-02-14 2023-12-31 13F DEXCOM INC COM COMMON 252131107 990,133 78,239 8.58 122,866 44.41 0.2800
2023-11-13 2023-09-30 13F DEXCOM INC COM COMMON 252131107 911,894 109,397 13.63 85,080 -17.50 0.2321
2023-08-11 2023-06-30 13F DEXCOM INC COM COMMON 252131107 802,497 133,299 19.92 103,129 32.65 0.2722
2023-05-15 2023-03-31 13F DEXCOM INC COM COMMON 252131107 669,198 4,330 0.65 77,747 103,562.67 0.1918
2023-02-13 2022-12-31 13F DEXCOM INC COM COMMON 252131107 664,868 -16,972 -2.49 75 -99.86 0.1983
2022-11-15 2022-09-30 13F DEXCOM INC COM COMMON 252131107 681,840 39,027 6.07 54,915 14.62 0.1618
2022-08-08 2022-06-30 13F DEXCOM INC COM COMMON 252131107 642,813 484,394 305.77 47,909 -40.89 0.1330
2022-05-13 2022-03-31 13F DEXCOM INC COM COMMON 252131107 158,419 3,959 2.56 81,047 -2.28 0.2003
2022-02-09 2021-12-31 13F DEXCOM INC COM COMMON 252131107 154,460 -54,939 -26.24 82,937 -27.57 0.1939
2021-11-12 2021-09-30 13F DEXCOM INC COM COMMON 252131107 209,399 -2,395 -1.13 114,512 26.62 0.2929
2021-08-11 2021-06-30 13F DEXCOM INC COM COMMON 252131107 211,794 66,738 46.01 90,436 73.48 0.2351
2021-05-13 2021-03-31 13F DEXCOM INC COM COMMON 252131107 145,056 -9,446 -6.11 52,132 -8.74 0.1462
2021-02-11 2020-12-31 13F DEXCOM INC COM COMMON 252131107 154,502 -6,867 -4.26 57,122 -14.13 0.1708
2020-11-12 2020-09-30 13F DEXCOM INC COM COMMON 252131107 161,369 -5,279 -3.17 66,521 -1.54 0.2279
2020-10-22 2020-06-30 13F/A-1 DEXCOM INC COM COMMON 252131107 166,648 -98,936 -37.25 67,559 -5.53 0.2545
2020-08-14 2020-06-30 13F DEXCOM INC COM COMMON 252131107 215,585 -49,999 47,157 93,454.4601
2020-05-14 2020-03-31 13F DEXCOM INC COM COMMON 252131107 265,584 48,945 22.59 71,514 50.91 0.3266
2020-02-14 2019-12-31 13F DEXCOM INC COM COMMON 252131107 216,639 216,639 47,388 0.1701
2016-11-10 2016-09-30 13F DEXCOM INC COM COMMON 252131107 0 -22,231 -100.00 0 -100.00
2016-08-11 2016-06-30 13F DEXCOM INC COM COMMON 252131107 22,231 -142 -0.63 1,764 16.13 0.0162
2016-05-12 2016-03-31 13F DEXCOM INC COM COMMON 252131107 22,373 -8,458 -27.43 1,519 -39.84 0.0145
2016-02-11 2015-12-31 13F DEXCOM INC COM COMMON 252131107 30,831 -3,900 -11.23 2,525 -15.33 0.0253
2015-11-12 2015-09-30 13F DEXCOM INC COM COMMON 252131107 34,731 3,881 12.58 2,982 20.88 0.0317
2015-08-14 2015-06-30 13F DEXCOM INC COM COMMON 252131107 30,850 30,850 2,467 0.0243
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.