DexCom, Inc.
US ˙ NasdaqGS ˙ US2521311074

SecurityDXCM / DexCom, Inc.
InstitutionTrexquant Investment LP
Latest Disclosed Ownership304,067 shares
Latest Disclosed Value $ 19,095,408
Trexquant Investment LP reports 21.76% increase in ownership of DXCM / DexCom, Inc.

On May 15, 2026 - Trexquant Investment LP filed a 13F-HR form disclosing ownership of 304,067 shares of DexCom, Inc. (US:DXCM) valued at $19,095,408 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 249,727 shares of DexCom, Inc.. This represents a change in shares of 21.76% during the quarter. The current value of the position is $22,154,322 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.

Upgrade to unlock premium data and export to Excel .

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 304,067 54,340 21.76 19,095 15.21 0.1372
2026-02-17 2025-12-31 13F DEXCOM COM 252131107 249,727 180,635 261.44 16,574 256.51 0.1478
2025-11-14 2025-09-30 13F DEXCOM COM 252131107 69,092 69,092 4,649 0.0479
2025-08-12 2025-06-30 13F DEXCOM COM 252131107 0 -120,891 -100.00 0 -100.00
2025-05-14 2025-03-31 13F DEXCOM COM 252131107 120,891 -105,129 -46.51 8,256 -53.04 0.0960
2025-02-12 2024-12-31 13F DEXCOM COM 252131107 226,020 -190,493 -45.74 17,578 -37.05 0.2049
2024-11-12 2024-09-30 13F DEXCOM COM 252131107 416,513 229,044 122.18 27,923 31.37 0.3535
2024-08-13 2024-06-30 13F DEXCOM COM 252131107 187,469 140,639 300.32 21,255 227.25 0.3243
2024-05-14 2024-03-31 13F DEXCOM COM 252131107 46,830 -140,008 -74.94 6,495 -71.98 0.1295
2024-02-09 2023-12-31 13F DEXCOM COM 252131107 186,838 -27,116 -12.67 23,185 16.15 0.5217
2023-11-13 2023-09-30 13F DEXCOM COM 252131107 213,954 112,795 111.50 19,962 53.56 0.5008
2023-08-11 2023-06-30 13F DEXCOM COM 252131107 101,159 57,591 132.19 13,000 156.85 0.3408
2023-05-15 2023-03-31 13F DEXCOM COM 252131107 43,568 -88,621 -67.04 5,062 -66.19 0.1390
2023-02-13 2022-12-31 13F DEXCOM COM 252131107 132,189 42,323 47.10 14,969 106.81 0.4244
2022-11-14 2022-09-30 13F DEXCOM COM 252131107 89,866 72,150 407.26 7,238 448.33 0.2545
2022-08-11 2022-06-30 13F DEXCOM COM 252131107 17,716 17,716 1,320 0.0591
2022-05-13 2022-03-31 13F DEXCOM COM 252131107 0 -11,751 -100.00 0 -100.00
2022-02-14 2021-12-31 13F DEXCOM COM 252131107 11,751 11,751 6,310 0.3898
2021-08-12 2021-06-30 13F DEXCOM COM 252131107 0 -6,224 -100.00 0 -100.00
2021-05-13 2021-03-31 13F DEXCOM COM 252131107 6,224 6,224 2,237 0.2052
2020-11-06 2020-09-30 13F DEXCOM COM 252131107 0 -10,482 -100.00 0 -100.00
2020-08-07 2020-06-30 13F DEXCOM COM 252131107 10,482 6,514 164.16 4,249 297.85 0.2950
2020-05-08 2020-03-31 13F DEXCOM COM 252131107 3,968 3,968 -62.14 1,068 -74.86 0.0775
2020-02-14 2019-09-30 13F/A-1 DEXCOM COM 252131107 0 -23,010 -100.00 0 -100.00
2019-08-09 2019-06-30 13F DEXCOM COM 252131107 23,010 -22,556 -49.50 3,448 -36.47 0.3103
2019-05-13 2019-03-31 13F DEXCOM COM 252131107 45,566 23,680 108.20 5,427 106.98 0.3854
2019-02-13 2018-12-31 13F DEXCOM COM 252131107 21,886 -394 -1.77 2,622 -17.73 0.1639
2018-11-09 2018-09-30 13F DEXCOM COM 252131107 22,280 -35,155 -61.21 3,187 -41.58 0.2396
2018-08-07 2018-06-30 13F DEXCOM COM 252131107 57,435 57,435 157.79 5,455 71.16 0.3780
2018-05-03 2018-03-31 13F DEXCOM COM 252131107 0 -41,873 -100.00 0 -100.00
2018-02-08 2017-12-31 13F DEXCOM COM 252131107 41,873 41,873 2,403 0.2638
2017-11-09 2017-09-30 13F DEXCOM COM 252131107 0 -5,918 -100.00 0 -100.00
2017-08-01 2017-06-30 13F DEXCOM COM 252131107 5,918 3,066 107.50 433 78.93 0.1185
2017-05-08 2017-03-31 13F DEXCOM COM 252131107 2,852 -3,475 -54.92 242 -35.98 0.0310
2017-02-10 2016-12-31 13F DEXCOM COM 252131107 6,327 6,327 121.84 378 56.20 0.0598
2016-05-11 2016-03-31 13F DEXCOM COM 252131107 0 -18,500 -100.00 0 -100.00
2016-02-10 2015-12-31 13F DEXCOM COM 252131107 18,500 18,500 0.00 1,515 0.1334
2015-08-12 2015-06-30 13F DEXCOM COM 252131107 0 -16,600 -100.00 0 -100.00
2015-05-13 2015-03-31 13F DEXCOM COM 252131107 16,600 16,600 1,034 0.1055
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.