DexCom, Inc.
DE ˙ DB ˙ US2521311074
62,20 € ↓ -0,20 (-0,32%)
2026-06-04
PREZZO DELLE AZIONI
SecurityDE:DC4 / DexCom, Inc.
InstitutionOppenheimer & Co Inc
Latest Disclosed Ownership5,993 shares
Latest Disclosed Value $ 376,360
Oppenheimer & Co Inc reports 6.52% decrease in ownership of DC4 / DexCom, Inc.

On April 23, 2026 - Oppenheimer & Co Inc filed a 13F-HR form disclosing ownership of 5,993 shares of DexCom, Inc. (DE:DC4) valued at $324,761 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 2, 2026 disclosing 6,411 shares of DexCom, Inc.. This represents a change in shares of -6.52% during the quarter. The current value of the position is $372,765 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)
2026-04-23 2026-03-31 13F DEXCOM COM 252131107 5,993 -418 -6.52 376 -11.53 0.0046
2026-02-02 2025-12-31 13F DEXCOM COM 252131107 6,411 -14,923 -69.95 425 -70.38 0.0060
2025-11-06 2025-09-30 13F DEXCOM COM 252131107 21,334 -158 -0.74 1,436 -23.51 0.0175
2025-07-31 2025-06-30 13F DEXCOM COM 252131107 21,492 267 1.26 1,876 29.47 0.0248
2025-04-23 2025-03-31 13F DEXCOM COM 252131107 21,225 974 4.81 1,449 -7.94 0.0219
2025-02-05 2024-12-31 13F DEXCOM COM 252131107 20,251 -12,598 -38.35 1,575 -28.52 0.0235
2024-11-05 2024-09-30 13F DEXCOM COM 252131107 32,849 -1,745 -5.04 2,202 -43.86 0.0336
2024-08-08 2024-06-30 13F DEXCOM COM 252131107 34,594 285 0.83 3,922 -17.57 0.0623
2024-05-07 2024-03-31 13F DEXCOM COM 252131107 34,309 -3,754 -9.86 4,759 0.74 0.0789
2024-02-13 2023-12-31 13F DEXCOM COM 252131107 38,063 -7,155 -15.82 4,723 11.97 0.0868
2023-11-08 2023-09-30 13F DEXCOM COM 252131107 45,218 -518 -1.13 4,219 -28.23 0.0871
2023-08-03 2023-06-30 13F DEXCOM COM 252131107 45,736 4,627 11.26 5,878 23.05 0.1176
2023-05-10 2023-03-31 13F DEXCOM COM 252131107 41,109 -4,561 -9.99 4,776 -7.64 0.1013
2023-02-08 2022-12-31 13F DEXCOM COM 252131107 45,670 6,238 15.82 5,172 62.81 0.1177
2022-11-14 2022-09-30 13F DEXCOM COM 252131107 39,432 -140 -0.35 3,176 7.70 0.0743
2022-08-08 2022-06-30 13F DEXCOM COM 252131107 39,572 29,799 304.91 2,949 -41.02 0.0635
2022-05-12 2022-03-31 13F DEXCOM COM 252131107 9,773 12 0.12 5,000 -4.60 0.0901
2022-02-02 2021-12-31 13F DEXCOM COM 252131107 9,761 -27 -0.28 5,241 -2.09 0.0916
2021-11-12 2021-09-30 13F DEXCOM COM 252131107 9,788 -553 -5.35 5,353 21.22 0.1002
2021-08-03 2021-06-30 13F DEXCOM COM 252131107 10,341 712 7.39 4,416 27.59 0.0791
2021-05-10 2021-03-31 13F DEXCOM COM 252131107 9,629 -1,862 -16.20 3,461 -18.53 0.0691
2021-02-11 2020-12-31 13F DEXCOM COM 252131107 11,491 -4,002 -25.83 4,248 -33.49 0.0896
2020-11-13 2020-09-30 13F DEXCOM COM 252131107 15,493 6,840 79.05 6,387 82.07 0.1598
2020-08-11 2020-06-30 13F DEXCOM COM 252131107 8,653 1,982 29.71 3,508 95.32 0.0908
2020-05-08 2020-03-31 13F DEXCOM COM 252131107 6,671 1,867 38.86 1,796 70.88 0.0545
2020-02-07 2019-12-31 13F DEXCOM COM 252131107 4,804 1,229 34.38 1,051 96.82 0.0260
2019-10-31 2019-09-30 13F DEXCOM COM 252131107 3,575 599 20.13 534 19.73 0.0145
2019-08-09 2019-06-30 13F DEXCOM COM 252131107 2,976 -32,684 -91.65 446 -89.50 0.0121
2019-04-24 2019-03-31 13F DEXCOM COM 252131107 35,660 12,387 53.22 4,247 52.33 0.1135
2019-01-29 2018-12-31 13F DEXCOM COM 252131107 23,273 19,991 609.11 2,788 494.46 0.0872
2018-10-26 2018-09-30 13F DEXCOM COM 252131107 3,282 630 23.76 469 86.11 0.0119
2018-08-10 2018-06-30 13F DEXCOM COM 252131107 2,652 2,652 252 0.0068
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.