DexCom, Inc.
US ˙ NasdaqGS ˙ US2521311074

SecurityDXCM / DexCom, Inc.
InstitutionBridgewater Advisors Inc.
Latest Disclosed Ownership12,321 shares
Latest Disclosed Value $ 720,938
Bridgewater Advisors Inc. reports 0.32% decrease in ownership of DXCM / DexCom, Inc.

On May 14, 2026 - Bridgewater Advisors Inc. filed a 13F-HR form disclosing ownership of 12,321 shares of DexCom, Inc. (US:DXCM) valued at $773,759 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 23, 2026 disclosing 12,360 shares of DexCom, Inc.. This represents a change in shares of -0.32% during the quarter. The current value of the position is $896,599 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)
2026-05-14 2026-03-31 13F DEXCOM COM 252131107 12,321 -39 -0.32 721 -19.10 0.0429
2026-01-23 2025-12-31 13F DEXCOM COM 252131107 12,360 -10 -0.08 890 24.13 0.0577
2025-11-10 2025-09-30 13F DEXCOM COM 252131107 12,370 -215 -1.71 717 -36.15 0.0497
2025-08-05 2025-06-30 13F DEXCOM COM 252131107 12,585 -51 -0.40 1,123 24.78 0.0854
2025-05-02 2025-03-31 13F DEXCOM COM 252131107 12,636 -381 -2.93 901 -12.62 0.0780
2025-01-16 2024-12-31 13F DEXCOM COM 252131107 13,017 433 3.44 1,031 13.31 0.1076
2024-10-31 2024-09-30 13F DEXCOM COM 252131107 12,584 -587 -4.46 909 -35.99 0.0953
2024-08-02 2024-06-30 13F DEXCOM COM 252131107 13,171 13,171 1,420 0.1758
2021-05-20 2021-03-31 13F DEXCOM COM 252131107 0 -6,108 -100.00 0 -100.00
2014-08-14 2014-06-30 13F DEXCOM COM 252131107 6,108 0 0.00 242 -4.35 0.2025
2014-05-01 2014-03-31 13F DEXCOM COM 252131107 6,108 0 0.00 253 17.13 0.2544
2014-02-21 2013-12-31 13F DEXCOM COM 252131107 6,108 6,108 216 0.2220
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.