DexCom, Inc.
DE ˙ DB ˙ US2521311074
62,20 € ↓ -0,20 (-0,32%)
2026-06-04
PREZZO DELLE AZIONI
SecurityDE:DC4 / DexCom, Inc.
InstitutionWestpac Banking Corp
Latest Disclosed Ownership3,969 shares
Latest Disclosed Value $ 249,253
Westpac Banking Corp reports 31.00% decrease in ownership of DC4 / DexCom, Inc.

On May 11, 2026 - Westpac Banking Corp filed a 13F-HR form disclosing ownership of 3,969 shares of DexCom, Inc. (DE:DC4) valued at $215,080 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 10, 2026 disclosing 5,752 shares of DexCom, Inc.. This represents a change in shares of -31.00% during the quarter. The current value of the position is $246,872 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)
2026-05-11 2026-03-31 13F DEXCOM COM 252131107 3,969 -1,783 -31.00 249 -34.65 0.0087
2026-02-10 2025-12-31 13F DEXCOM COM 252131107 5,752 1,783 44.92 382 42.70 0.0241
2025-11-14 2025-09-30 13F/A-1 DEXCOM INC USD 0.001 COM 252131107 3,969 0 0.00 267 -22.83 0.0166
2025-11-12 2025-09-30 13F DEXCOM INC USD 0.001 COM 252131107 3,969 0 267 0.0067
2025-08-11 2025-06-30 13F DEXCOM COM 252131107 3,969 0 0.00 346 27.68 0.0232
2025-05-13 2025-03-31 13F DEXCOM COM 252131107 3,969 -901 -18.50 271 -28.31 0.0199
2025-02-12 2024-12-31 13F DEXCOM COM 252131107 4,870 680 16.23 379 35.00 0.0251
2024-11-08 2024-09-30 13F DEXCOM COM 252131107 4,190 675 19.20 281 -29.65 0.0188
2024-08-14 2024-06-30 13F/A-1 DEXCOM COM 252131107 3,515 0 0.00 399 -18.28 0.0316
2024-08-13 2024-06-30 13F DEXCOM COM 252131107 113 -3,402 399 0.0137
2024-05-09 2024-03-31 13F DEXCOM COM 252131107 3,515 -15,310 -81.33 488 -79.14 0.0371
2024-02-08 2023-12-31 13F DEXCOM COM 252131107 18,825 15,803 522.93 2,336 730.96 0.1926
2023-11-13 2023-09-30 13F DEXCOM COM 252131107 3,022 -5,248 -63.46 282 -73.54 0.0211
2023-08-10 2023-06-30 13F DEXCOM COM 252131107 8,270 -37,204 -81.81 1,063 -79.90 0.0750
2023-05-04 2023-03-31 13F DEXCOM COM 252131107 45,474 -6,757 -12.94 5,283 -10.67 0.0710
2023-02-06 2022-12-31 13F DEXCOM COM 252131107 52,231 20,459 64.39 5,915 131.20 0.0874
2022-11-08 2022-09-30 13F DEXCOM COM 252131107 31,772 0 0.00 2,559 8.07 0.0390
2022-08-10 2022-06-30 13F DEXCOM COM 252131107 31,772 23,894 303.30 2,368 -41.27 0.0309
2022-05-11 2022-03-31 13F DEXCOM COM 252131107 7,878 -44 -0.56 4,030 -5.24 0.0462
2022-02-08 2021-12-31 13F DEXCOM COM 252131107 7,922 427 5.70 4,254 3.78 0.0441
2021-10-27 2021-09-30 13F DEXCOM COM 252131107 7,495 0 0.00 4,099 28.06 0.0438
2021-08-11 2021-06-30 13F DEXCOM COM 252131107 7,495 0 0.00 3,200 18.83 0.0321
2021-05-13 2021-03-31 13F DEXCOM COM 252131107 7,495 -10,538 -58.44 2,694 -59.61 0.0297
2021-02-11 2020-12-31 13F DEXCOM COM 252131107 18,033 -500 -2.70 6,667 -12.72 0.0757
2020-11-10 2020-09-30 13F DEXCOM COM 252131107 18,533 -8,638 -31.79 7,640 -30.65 0.1035
2020-08-12 2020-06-30 13F DEXCOM COM 252131107 27,171 -41,247 -60.29 11,015 -40.21 0.1642
2020-05-14 2020-03-31 13F DEXCOM COM 252131107 68,418 18,773 37.81 18,423 69.65 0.3175
2020-02-11 2019-12-31 13F DEXCOM COM 252131107 49,645 8,900 21.84 10,859 78.60 0.1398
2019-11-13 2019-09-30 13F DEXCOM COM 252131107 40,745 -14,700 -26.51 6,081 -26.81 0.0845
2019-08-01 2019-06-30 13F DEXCOM COM 252131107 55,445 10,150 22.41 8,308 54.00 0.1269
2019-05-14 2019-03-31 13F DEXCOM COM 252131107 45,295 -4,650 -9.31 5,395 -9.84 0.0891
2019-02-07 2018-12-31 13F DEXCOM COM 252131107 49,945 7,995 19.06 5,983 -0.28 0.1020
2018-11-13 2018-09-30 13F DEXCOM COM 252131107 41,950 41,950 -16.01 6,001 0.28 0.1029
2018-01-18 2017-12-31 13F DEXCOM COM 252131107 0 -7,654 -100.00 0 -100.00
2017-10-30 2017-09-30 13F DEXCOM COM 252131107 7,654 0 0.00 374 -33.09 0.0082
2017-08-09 2017-06-30 13F DEXCOM COM 252131107 7,654 0 0.00 560 -13.73 0.0123
2017-05-18 2017-03-31 13F/A-1 DEXCOM COM 252131107 7,654 0 0.00 649 5.88 0.0052
2017-02-09 2016-12-31 13F DEXCOM COM 252131107 7,654 7,654 612 0.0058
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.