DexCom, Inc.
MX ˙ BMV ˙ US2521311074
SecurityMX:DXCM / DexCom, Inc.
InstitutionCompagnie Lombard Odier SCmA
Latest Disclosed Ownership190,007 shares
Latest Disclosed Value $ 11,932,440
Compagnie Lombard Odier SCmA ownership in DXCM / DexCom, Inc.

On April 15, 2026 - Compagnie Lombard Odier SCmA filed a 13F-HR form disclosing ownership of 190,007 shares of DexCom, Inc. (MX:DXCM) valued at $11,932,440 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 16, 2026 disclosing 216,798 shares of DexCom, Inc.. This represents a change in shares of -12.36% during the quarter.

Compagnie Lombard Odier SCmA has a history of taking positions in derivatives of the underlying security (DXCM) in the form of stock options. The firm currently holds call options representing 0 of underlying shares valued at $0 USD and put options representing 0 of underlying shares valued at $0 USD .

Note: prior versions of this page mistakenly stated that the share values represented the number of options, not the number of underlying shares. For more information on the data backing these reports, please see the SEC document Frequently Asked Questions About Form 13F.

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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Institutional Put/Call Ratios
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In addition to reporting standard equity and debt issues, institutions with more than 100MM assets under management must also disclose their put and call option holdings. Since put options generally indicate negative sentiment, and call options indicate positive sentiment, we can get a sense of the overall institutional sentiment by plotting the ratio of puts to calls. The chart to the right plots the historical put/call ratio for this instrument.

Using Put/Call Ratio as an indicator of investor sentiment overcomes one of the key deficiencies of using total institutional ownership, which is that a significant amount of assets under management are invested passively to track indices. Passively-managed funds do not typically buy options, so the put/call ratio indicator more closely tracks the sentiment of actively-managed funds.

MX:DXCM / DexCom, Inc. Historical Put/Call Ratio
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)
2026-04-15 2026-03-31 13F DEXCOM COM 252131107 190,007 -26,791 -12.36 11,932 -17.07 0.1467
2026-01-16 2025-12-31 13F DEXCOM COM 252131107 216,798 34,406 18.86 14,389 17.23 0.1564
2025-11-06 2025-09-30 13F DEXCOM COM 252131107 182,392 -720 -0.39 12,273 -23.21 0.1354
2025-07-15 2025-06-30 13F DEXCOM COM 252131107 183,112 53,092 40.83 15,984 80.01 0.2107
2025-04-16 2025-03-31 13F DEXCOM COM 252131107 130,020 -4,790 -3.55 8,879 -15.31 0.1089
2025-01-30 2024-12-31 13F DEXCOM COM 252131107 134,810 -16,473 -10.89 10,484 3.37 0.1546
2024-10-11 2024-09-30 13F DEXCOM COM 252131107 151,283 -4,431 -2.85 10,142 -42.55 0.1576
2024-07-18 2024-06-30 13F DEXCOM COM 252131107 155,714 3,099 2.03 17,655 -16.60 0.2987
2024-05-01 2024-03-31 13F DEXCOM COM 252131107 152,615 25,700 20.25 21,168 34.41 0.3746
2024-01-16 2023-12-31 13F DEXCOM COM 252131107 126,915 22,942 22.07 15,749 62.35 0.2926
2023-10-23 2023-09-30 13F DEXCOM COM 252131107 103,973 70,923 214.59 9,701 128.40 0.2243
2023-08-07 2023-06-30 13F DEXCOM COM 252131107 33,050 17,972 119.19 4,247 142.55 0.1190
2023-05-01 2023-03-31 13F DEXCOM COM 252131107 15,078 6,333 72.42 1,752 76.69 0.0438
2023-02-14 2022-12-31 13F/A-1 DEXCOM COM 252131107 8,745 6,069 226.79 991 358.80 0.0265
2023-02-13 2022-12-31 13F DEXCOM COM 252131107 8,745 6,069 1 0.0000
2022-11-09 2022-09-30 13F DEXCOM COM 252131107 2,676 0 0.00 216 8.54 0.0062
2022-08-11 2022-06-30 13F DEXCOM COM 252131107 2,676 1,856 226.34 199 -52.62 0.0050
2022-04-27 2022-03-31 13F DEXCOM COM 252131107 820 550 203.70 420 187.67 0.0089
2022-02-09 2021-12-31 13F DEXCOM COM 252131107 270 -250 -48.08 146 -48.77 0.0029
2021-10-28 2021-09-30 13F DEXCOM COM 252131107 520 250 92.59 285 145.69 0.0062
2021-07-15 2021-06-30 13F DEXCOM COM 252131107 270 0 0.00 116 19.59 0.0026
2021-04-23 2021-03-31 13F DEXCOM COM 252131107 270 0 0.00 97 -3.00 0.0021
2021-02-09 2020-12-31 13F DEXCOM COM 252131107 270 0 0.00 100 -9.91 0.0026
2020-11-12 2020-09-30 13F DEXCOM COM 252131107 270 -80 -22.86 111 -21.83 0.0033
2020-08-14 2020-06-30 13F DEXCOM COM 252131107 350 -150 -30.00 142 5.19 0.0048
2020-05-13 2020-03-31 13F DEXCOM COM 252131107 500 0 0.00 135 23.85 0.0057
2020-02-13 2019-12-31 13F DEXCOM COM 252131107 500 0 0.00 109 45.33 0.0042
2019-11-12 2019-09-30 13F DEXCOM COM 252131107 500 -200 -28.57 75 -28.57 0.0031
2019-08-14 2019-06-30 13F DEXCOM COM 252131107 700 200 40.00 105 75.00 0.0043
2019-05-13 2019-03-31 13F DEXCOM COM 252131107 500 -6,525 -92.88 60 -92.87 0.0025
2019-02-13 2018-12-31 13F DEXCOM COM 252131107 7,025 -450,771 -98.47 842 -98.71 0.0345
2018-11-13 2018-09-30 13F DEXCOM COM 252131107 457,796 -148,738 -24.52 65,486 13.72 2.2938
2018-08-10 2018-06-30 13F DEXCOM COM 252131107 606,534 -158,506 -20.72 57,584 1.52 2.1137
2018-05-11 2018-03-31 13F DEXCOM COM 252131107 765,040 -120,489 -13.61 56,720 11.62 2.0667
2018-02-16 2017-12-31 13F/A-1 DEXCOM COM 252131107 885,529 39,729 4.70 50,814 22.76 1.8402
2018-02-13 2017-12-31 13F DEXCOM COM 252131107 885,529 39,729 50,814
2017-11-14 2017-09-30 13F DEXCOM COM 252131107 845,800 55,667 7.05 41,392 -28.40 1.4680
2017-08-14 2017-06-30 13F DEXCOM COM 252131107 790,133 27,086 3.55 57,807 -10.59 2.0025
2017-05-15 2017-03-31 13F DEXCOM COM 252131107 763,047 -103,954 -11.99 64,653 24.84 2.1837
2017-02-14 2016-12-31 13F DEXCOM COM 252131107 867,001 386,353 80.38 51,787 22.91 1.5154
2016-11-14 2016-09-30 13F DEXCOM COM 252131107 480,648 480,648 42,135 1.2297
Disclosed Call Options
File
Date
Effective
Date
Form Security Class ID Opt Avg Share
Price
Shares ΔShares
(%)
Value
(x1000)
ΔValue
(%)
Prior Allocation
(%)
Allocation
(%)
ΔAllocation
(%)
Cost Basis
(x1000)
Profit
(x1000)
Return
(%)
2023-05-01 2023-03-31 13F DEXCOM CALL Call 0 -100.00 0 -100.00 n/a n/a n/a
2023-02-14 2022-12-31 13F/A DEXCOM CALL Call 1,100 4 n/a n/a n/a
2023-02-13 2022-12-31 13F DEXCOM CALL Call 1,100 0 n/a n/a n/a
2018-02-13 2017-12-31 13F DEXCOM CALL Call 0 -100.00 0 -100.00 n/a n/a n/a
2017-11-14 2017-09-30 13F DEXCOM CALL Call 10,900 1,111.11 32 1,500.00 n/a n/a n/a
2017-08-14 2017-06-30 13F DEXCOM CALL Call 900 -91.74 2 -93.75 n/a n/a n/a
2017-02-14 2016-12-31 13F DEXCOM CALL Call 0 -100.00 0 -100.00 n/a n/a n/a
2016-11-14 2016-09-30 13F DEXCOM CALL Call 700 2 n/a n/a n/a
Disclosed Put Options
File
Date
Effective
Date
Form Security Class ID Opt Avg Share Price Shares ΔShares
(%)
Value
(x1000)
ΔValue
(%)
Prior Allocation
(%)
Allocation
(%)
ΔAllocation
(%)
Cost Basis
(x1000)
Profit
(x1000)
Return
(%)
2024-01-16 2023-12-31 13F DEXCOM PUT Put 0 0 n/a n/a n/a
2023-10-23 2023-09-30 13F DEXCOM PUT Put 0 0 n/a n/a n/a
2023-05-01 2023-03-31 13F DEXCOM PUT Put 0 0 n/a n/a n/a
2018-11-13 2018-09-30 13F DEXCOM PUT Put 0 -100.00 0 -100.00 n/a n/a n/a
2018-08-10 2018-06-30 13F DEXCOM PUT Put 11,900 31 n/a n/a n/a
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.