DexCom, Inc.
MX ˙ BMV ˙ US2521311074
SecurityMX:DXCM / DexCom, Inc.
InstitutionGAMMA Investing LLC
Latest Disclosed Ownership9,179 shares
Latest Disclosed Value $ 576,441
GAMMA Investing LLC reports 50.77% increase in ownership of DXCM / DexCom, Inc.

On April 6, 2026 - GAMMA Investing LLC filed a 13F-HR form disclosing ownership of 9,179 shares of DexCom, Inc. (MX:DXCM) valued at $576,441 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 5, 2026 disclosing 6,088 shares of DexCom, Inc.. This represents a change in shares of 50.77% 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)
2026-04-06 2026-03-31 13F DEXCOM INC COM Common Stock 252131107 9,179 3,091 50.77 576 42.57 0.0269
2026-01-05 2025-12-31 13F DEXCOM INC COM Common Stock 252131107 6,088 -955 -13.56 404 -14.59 0.0203
2025-10-02 2025-09-30 13F DEXCOM INC COM Common Stock 252131107 7,043 169 2.46 474 -21.17 0.0261
2025-07-14 2025-06-30 13F DEXCOM INC COM Common Stock 252131107 6,874 -444 -6.07 600 20.24 0.0379
2025-04-15 2025-03-31 13F/A-1 DEXCOM INC COM Common Stock 252131107 7,318 -940 -11.38 500 -22.27 0.0375
2025-04-07 2025-03-31 13F DEXCOM INC COM Common Stock 252131107 499,746 491,488 7 0.0390
2025-01-03 2024-12-31 13F DEXCOM INC COM Common Stock 252131107 8,258 2,665 47.65 642 71.66 0.0548
2024-10-04 2024-09-30 13F DEXCOM INC COM Common Stock 252131107 5,593 2,293 375 0.0372
2024-10-07 2024-09-30 13F DEXCOM INC COM Common Stock 252131107 5,593 2,293 69.48 375 0.00 0.0372
2024-07-02 2024-06-30 13F DEXCOM INC COM Common Stock 252131107 3,300 248 8.13 374 -11.58 0.0510
2024-04-05 2024-03-31 13F DEXCOM INC COM Common Stock 252131107 3,052 374 13.97 423 30.56 0.0862
2024-02-01 2023-12-31 13F DEXCOM INC COM Common Stock 252131107 2,678 2,678 325 0.0880
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.