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DXCM in the 13F filings

Dexcom Inc · CUSIP 252131107

Sector · Medical devices and instrumentsTheme · Healthcare: biopharma and medtech· L3VLUP-definedTheme · Surgical, medical and electromedical devices
Quarter
Q3 2026 · early filersQ2 2026Q1 2026Q4 2025Q3 2025Q2 2025Q1 2025Q4 2024Q3 2024Q2 2024Q1 2024Q4 2023
Quarter end
31 Mar 2026
the date the book describes
Filed
27 Oct 2026
latest of these filings; the earliest 8 May 2026
Managers listing it
35
at least, of 95 tracked, among listed positions
Comparable managers
91
filed both Q4 2025 and Q1 2026; 27 listed it in both
Shares listed
78,820,605
combined, among listed positions
Reported value
$5.0bn
combined, at the quarter end

AllianceBernstein LP. Values in this filing are at the previous quarter end's prices; its share count is the quarter end's.

Among the 91 comparable managers: 17 buyers (opened or added shares) and 18 sellers (trimmed or exited), at least, among listed positions. Their net change in shares was +6,371,965.

Managers listing DXCM in Q1 2026

Share of 13F value is the position’s reported value over everything the manager reported that quarter. The share change is against Q4 2025, and only where both filings list the position. A rise in value with no rise in shares is the price, not buying.

35 of 35 holders

ActionFiling
Baillie Gifford & Co15,599,525$980m1.00%Added+46,9388 May 2026 (the filing on sec.gov)
Invesco Ltd13,672,314$859m0.08%Trimmed-405,24212 May 2026 (the filing on sec.gov)
AllianceBernstein LP12,923,644$858m0.28%Added+4,299,51215 May 2026 (the filing on sec.gov)
Wellington Management Group LLP9,326,240$586m0.11%Added+6,252,66515 May 2026 (the filing on sec.gov)
Janus Henderson Group Ltd2,644,539$166m0.08%Added+645,53418 May 2026 (the filing on sec.gov)
Arrowstreet Capital LP2,545,103$160m0.09%Added+1,275,14214 May 2026 (the filing on sec.gov)
AQR Capital Management LLC2,173,497$136m0.06%Trimmed-929,29215 May 2026 (the filing on sec.gov)
Citadel Advisors LLC2,091,872$131munder 0.1%Added+2,004,97215 May 2026 (the filing on sec.gov)
MFS Investment Management1,934,452$122munder 0.1%Added+1,141,02514 May 2026 (the filing on sec.gov)
Neuberger Berman Group LLC1,729,163$109m0.08%Trimmed-611,03627 Oct 2026 (the filing on sec.gov)
Fidelity (FMR LLC)1,673,036$105munder 0.1%Added+374,39415 May 2026 (the filing on sec.gov)
Millennium Management LLC1,622,204$102munder 0.1%Added+32,32715 May 2026 (the filing on sec.gov)
Renaissance Technologies LLC1,582,996$99m0.16%Added+138,20014 May 2026 (the filing on sec.gov)
T. Rowe Price Associates Inc1,445,564$91munder 0.1%Trimmed-23,34415 May 2026 (the filing on sec.gov)
Capital World Investors1,384,000$87munder 0.1%Held013 May 2026 (the filing on sec.gov)
Squarepoint Ops LLC1,154,441$72m0.09%Trimmed-1,373,00715 May 2026 (the filing on sec.gov)
Two Sigma Investments LP1,114,948$70m0.06%Added+32,03515 May 2026 (the filing on sec.gov)
Jane Street Group LLC741,669$47munder 0.1%Added+690,96612 May 2026 (the filing on sec.gov)
Balyasny Asset Management LLC566,312$36munder 0.1%Trimmed-448,53415 May 2026 (the filing on sec.gov)
Woodline Partners LP513,321$32m0.12%Added+17,75115 May 2026 (the filing on sec.gov)
Acadian Asset Management LLC463,647$29munder 0.1%Trimmed-41,42613 May 2026 (the filing on sec.gov)
Susquehanna International Group LLP378,706$24munder 0.1%Trimmed-137,90015 May 2026 (the filing on sec.gov)
Man Group PLC357,842$22munder 0.1%Trimmed-604,75015 May 2026 (the filing on sec.gov)
ExodusPoint Capital Management LP317,067$20m0.16%Added+183,01314 May 2026 (the filing on sec.gov)
Point72 Asset Management LP257,298$16munder 0.1%Trimmed-960,30915 May 2026 (the filing on sec.gov)
Page 1 of 2

Largest increases and reductions, by shares

Q4 2025 to Q1 2026, among managers that listed it in both quarters or opened it.

Increases

Reductions

New positions and exits

At least these many: a manager is shown exiting only where its own filing shows the position gone.

New (1)

Exited (2)

Ownership over time

Every quarter on file. A quarter-end value moves with the price as well as with the shares held; buyers and sellers count comparable managers, by shares.
26 in Q3 2024 to 17 in Q2 2026

Tracked managers listing it, at least.

0102030402014201620182020202220242026
the quarter shown share split complete books; unmarked quarters rest on listed positionsClick a quarter to open it.
DXCM by quarter
QuarterHoldersReported valueBuyersSellers
Q2 20134$58mn.a.n.a.
Q3 20134$227mn.a.n.a.
Q4 20135$273mn.a.n.a.
Q1 20145$286mn.a.n.a.
Q2 20145$375mn.a.n.a.
Q3 20145$530mn.a.n.a.
Q4 20148$731mn.a.n.a.
Q1 20159$986mn.a.n.a.
Q2 201512$1.7bnn.a.n.a.
Q3 201516$1.6bnn.a.n.a.
Q4 201515$1.7bnn.a.n.a.
Q1 201613$1.7bnn.a.n.a.
Q2 201612$2.2bnn.a.n.a.
Q3 201613$2.9bnn.a.n.a.
Q4 201612$1.8bnn.a.n.a.
Q1 201711$2.6bnn.a.n.a.
Q2 201713$2.6bnn.a.n.a.
Q3 201713$2.1bnn.a.n.a.
Q4 201715$2.6bnn.a.n.a.
Q1 201817$3.4bnn.a.n.a.
Q2 201817$3.5bnn.a.n.a.
Q3 201826$4.2bnn.a.n.a.
Q4 201825$2.7bnn.a.n.a.
Q1 201921$2.8bnn.a.n.a.
Q2 201917$4.0bnn.a.n.a.
Q3 201918$4.3bnn.a.n.a.
Q4 201927$6.3bnn.a.n.a.
Q1 202032$7.8bnn.a.n.a.
Q2 202029$10.3bnn.a.n.a.
Q3 202025$9.9bnn.a.n.a.
Q4 202024$8.8bnn.a.n.a.
Q1 202122$8.4bnn.a.n.a.
Q2 202117$9.4bnn.a.n.a.
Q3 202122$12.0bnn.a.n.a.
Q4 202133$11.1bnn.a.n.a.
Q1 202225$9.9bnn.a.n.a.
Q2 202229$5.6bnn.a.n.a.
Q3 202224$6.0bnn.a.n.a.
Q4 202226$8.3bnn.a.n.a.
Q1 202333$8.9bnn.a.n.a.
Q2 202328$8.9bnn.a.n.a.
Q3 202332$6.9bnn.a.n.a.
Q4 202328$10.0bn1119
Q1 202429$10.7bn1318
Q2 202430$8.8bn1810
Q3 202426$4.7bn1612
Q4 202431$5.1bn1713
Q1 202524$3.7bn819
Q2 202520$4.5bn154
Q3 202529$4.1bn1910
Q4 202528$4.6bn2121
Q1 202625$4.6bn1718
Q2 202617$4.6bn1817

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How much of the picture this is

A 13F is a manager’s long US-listed equity book at a quarter end, filed up to 45 days later. It shows no shorts, cash, bonds or performance, and it is never today’s portfolio. Large books are listed to their largest positions, so a manager missing from this table may still hold a small position below that line. These are 95 tracked managers, not the institutional market.

Which funds own DXCM, latest filings →Back to the 13F Explorer →