DexCom, Inc.
US ˙ NasdaqGS ˙ US2521311074

SecurityDXCM / DexCom, Inc.
InstitutionMan Group plc
Latest Disclosed Ownership357,842 shares
Latest Disclosed Value $ 22,472,478
Man Group plc reports 62.83% decrease in ownership of DXCM / DexCom, Inc.

On May 15, 2026 - Man Group plc filed a 13F-HR form disclosing ownership of 357,842 shares of DexCom, Inc. (US:DXCM) valued at $22,472,478 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 962,592 shares of DexCom, Inc.. This represents a change in shares of -62.83% during the quarter. The current value of the position is $26,040,162 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 357,842 -604,750 -62.83 22,472 -64.83 0.0251
2026-02-17 2025-12-31 13F DEXCOM COM 252131107 962,592 378,902 64.91 63,887 62.66 0.1086
2025-11-14 2025-09-30 13F DEXCOM COM 252131107 583,690 125,860 27.49 39,276 -1.72 0.0683
2025-08-14 2025-06-30 13F DEXCOM COM 252131107 457,830 163,700 55.66 39,964 98.96 0.0761
2025-05-15 2025-03-31 13F DEXCOM COM 252131107 294,130 -10,285 -3.38 20,086 -15.16 0.0509
2025-02-14 2024-12-31 13F DEXCOM COM 252131107 304,415 -707,932 -69.93 23,674 -65.12 0.0623
2024-11-14 2024-09-30 13F DEXCOM COM 252131107 1,012,347 -241,746 -19.28 67,868 -52.27 0.1767
2024-08-14 2024-06-30 13F DEXCOM COM 252131107 1,254,093 991,319 377.25 142,189 290.14 0.3591
2024-05-15 2024-03-31 13F DEXCOM COM 252131107 262,774 30,508 13.13 36,447 26.46 0.0919
2024-02-14 2023-12-31 13F DEXCOM COM 252131107 232,266 28,822 -48.85 0.0803
2023-11-14 2023-09-30 13F DEXCOM COM 252131107 56,352 -15.59 0.1746
2023-08-14 2023-06-30 13F DEXCOM COM 252131107 519,489 66,760 142.52 0.2059
2023-05-15 2023-03-31 13F DEXCOM COM 252131107 27,527 -55.53 0.0979
2023-02-14 2022-12-31 13F DEXCOM COM 252131107 546,576 227,338 71.21 61,894 140.73 0.2219
2022-11-14 2022-09-30 13F DEXCOM COM 252131107 319,238 25,711 42.94 0.1193
2022-08-15 2022-06-30 13F DEXCOM COM 252131107 17,987 128.73 0.0762
2022-05-16 2022-03-31 13F DEXCOM COM 252131107 15,370 -53,190 -77.58 7,864 -78.64 0.0274
2022-02-14 2021-12-31 13F DEXCOM COM 252131107 68,560 -7,638 -10.02 36,813 -11.65 0.1184
2021-11-15 2021-09-30 13F DEXCOM COM 252131107 76,198 29,768 64.11 41,669 110.18 0.1462
2021-08-16 2021-06-30 13F DEXCOM COM 252131107 46,430 30,660 194.42 19,825 249.77 0.0698
2021-05-17 2021-03-31 13F DEXCOM COM 252131107 15,770 -10,832 -40.72 5,668 -42.37 0.0249
2021-02-16 2020-12-31 13F DEXCOM COM 252131107 26,602 7,275 37.64 9,835 23.43 0.0432
2020-11-16 2020-09-30 13F DEXCOM COM 252131107 19,327 7,291 60.58 7,968 63.31 0.0314
2020-08-14 2020-06-30 13F DEXCOM COM 252131107 12,036 2,416 25.11 4,879 88.38 0.0246
2020-05-15 2020-03-31 13F DEXCOM COM 252131107 9,620 8,055 514.70 2,590 657.31 0.0168
2020-02-18 2019-12-31 13F DEXCOM COM 252131107 1,565 -40 -2.49 342 43.10 0.0011
2019-11-14 2019-09-30 13F DEXCOM COM 252131107 1,605 -34,943 -95.61 239 -95.64 0.0009
2019-08-14 2019-06-30 13F DEXCOM COM 252131107 36,548 -24,443 -40.08 5,477 -24.60 0.0198
2019-05-15 2019-03-31 13F DEXCOM COM 252131107 60,991 -43,764 -41.78 7,264 -42.11 0.0276
2019-02-14 2018-12-31 13F DEXCOM COM 252131107 104,755 11,346 12.15 12,549 -6.08 0.0558
2018-11-14 2018-09-30 13F DEXCOM COM 252131107 93,409 26,269 39.13 13,361 109.52 0.0488
2018-08-14 2018-06-30 13F DEXCOM COM 252131107 67,140 67,140 6,377 0.0262
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.