DexCom, Inc.
US ˙ NasdaqGS ˙ US2521311074

SecurityDXCM / DexCom, Inc.
InstitutionOMERS ADMINISTRATION Corp
Latest Disclosed Ownership158,311 shares
Latest Disclosed Value $ 9,941,931
OMERS ADMINISTRATION Corp reports 0.71% increase in ownership of DXCM / DexCom, Inc.

On May 15, 2026 - OMERS ADMINISTRATION Corp filed a 13F-HR form disclosing ownership of 158,311 shares of DexCom, Inc. (US:DXCM) valued at $9,941,931 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 157,201 shares of DexCom, Inc.. This represents a change in shares of 0.71% during the quarter. The current value of the position is $11,520,291 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)
2026-05-15 2026-03-31 13F DEXCOM COM 252131107 158,311 1,110 0.71 9,942 -4.72 0.0639
2026-02-13 2025-12-31 13F DEXCOM COM 252131107 157,201 128,005 438.43 10,433 431.21 0.0744
2025-11-14 2025-09-30 13F DEXCOM COM 252131107 29,196 0 0.00 1,965 -22.92 0.0141
2025-08-13 2025-06-30 13F DEXCOM COM 252131107 29,196 0 0.00 2,549 27.85 0.0200
2025-05-14 2025-03-31 13F DEXCOM COM 252131107 29,196 3,066 11.73 1,994 -1.92 0.0174
2025-02-14 2024-12-31 13F DEXCOM COM 252131107 26,130 -3,425 -11.59 2,032 2.57 0.0178
2024-11-13 2024-09-30 13F DEXCOM COM 252131107 29,555 0 0.00 1,981 -40.87 0.0182
2024-08-13 2024-06-30 13F DEXCOM COM 252131107 29,555 29,555 3,351 0.0323
2017-02-09 2016-12-31 13F DEXCOM COM 252131107 0 -9,000 -100.00 0 -100.00
2016-11-14 2016-09-30 13F DEXCOM COM 252131107 9,000 0 0.00 789 10.50 0.0140
2016-08-11 2016-06-30 13F DEXCOM COM 252131107 9,000 0 0.00 714 16.86 0.0147
2016-05-12 2016-03-31 13F DEXCOM COM 252131107 9,000 0 0.00 611 -17.10 0.0136
2016-02-11 2015-12-31 13F DEXCOM COM 252131107 9,000 9,000 737 0.0191
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.