Dexcom Inc. 13F holders
Of the 44 funds followed here, 10 reported a position in Dexcom Inc. in a 13F for the quarter ended 30 June 2026. The largest: Baillie Gifford, 14.8 million shares worth $996.9 million, 0.9% of its reported book.
| Fund | Shares | Value | Of its book | Change on the quarter | Status | Quarter ended | Filing |
|---|---|---|---|---|---|---|---|
| Baillie Gifford | 14,801,590 | $996.9 million | 0.9% | -797,935 | trimmed | 30 June 2026 | 13F |
| Geode Capital Management | 12,426,515 | $834.2 million | 0.0% | +79,877 | added | 30 June 2026 | 13F |
| Norges Bank | 6,868,090 | $462.6 million | 0.0% | held | 30 June 2026 | 13F | |
| Citadel Advisors | 2,760,567 | $185.9 million | 0.0% | +73,695 | added | 30 June 2026 | 13F |
| FMR LLC | 1,893,246 | $127.5 million | 0.0% | +220,210 | added | 30 June 2026 | 13F |
| Renaissance Technologies | 1,630,796 | $109.8 million | 0.2% | +47,800 | added | 30 June 2026 | 13F |
| Millennium Management | 471,592 | $31.8 million | 0.0% | -1,301,712 | trimmed | 30 June 2026 | 13F |
| Bridgewater Associates | 400,929 | $27.0 million | 0.1% | +261,242 | added | 30 June 2026 | 13F |
| Point72 Asset Management | 290,540 | $19.6 million | 0.0% | -45,358 | trimmed | 30 June 2026 | 13F |
| Two Sigma Investments | 46,697 | $3.1 million | 0.0% | -1,072,251 | trimmed | 30 June 2026 | 13F |
Value is what the fund reported. Change is shares against the fund's previous 13F; a fund with one filing read shows no change. 13Fs cover long US positions of managers above $100 million and are filed up to 45 days after the quarter.
Schedule 13D and 13G filed on the name, last twelve months
| Filed | Schedule | Who | Holding | Of the class | Event date | Rule or purpose | Filing |
|---|---|---|---|---|---|---|---|
| 29 April 2026 | 13G | Vanguard Portfolio Management and 1 other | 19.3 million | 5.0% | 31 March 2026 | passive, institutional (13d-1(b)) | EDGAR |
| 29 April 2026 | 13G | Vanguard Capital Management and 1 other | 28.8 million | 7.5% | 31 March 2026 | passive, institutional (13d-1(b)) | EDGAR |
| 26 March 2026 | 13G/A | The Vanguard Group and 1 other | 0 | 0.0% | 13 March 2026 | passive, institutional (13d-1(b)) | EDGAR |
| 30 October 2025 | 13G/A | The Vanguard Group and 1 other | 49.5 million | 12.6% | 30 September 2025 | passive, institutional (13d-1(b)) | EDGAR |
A Schedule 13D is filed by anyone who crosses 5% of a class with intent to influence; a 13G by a passive holder. Amendments (/A) report a change, including an exit to zero. Holding and percentage are as the filer stated them on the cover page; the purpose is the filer's own words, cut short.
Fails to deliver
| Settlement date | Shares failed | Price | File |
|---|---|---|---|
| 28 August 2026 | 3,579 | $89.29 | SEC |
| 26 August 2026 | 20,101 | $89.16 | SEC |
| 24 August 2026 | 6,371 | $92.34 | SEC |
| 19 August 2026 | 56 | $89.60 | SEC |
| 17 August 2026 | 32 | $89.75 | SEC |
| 13 August 2026 | 4,351 | $90.80 | SEC |
| 12 August 2026 | 5,328 | $89.53 | SEC |
| 11 August 2026 | 4 | $87.65 | SEC |
| 4 August 2026 | 1,447 | $87.31 | SEC |
| 30 July 2026 | 59 | $75.14 | SEC |
| 28 July 2026 | 69,270 | $73.37 | SEC |
| 24 July 2026 | 108 | $70.48 | SEC |
| 22 July 2026 | 536 | $74.75 | SEC |
| 20 July 2026 | 93 | $76.65 | SEC |
| 17 July 2026 | 4,746 | $77.98 | SEC |
Shares that failed to deliver at settlement, per day, from the SEC's half-month files, which arrive about two weeks after the period. Largest in the window: 69,270 on 28 July 2026. A fail is an operational fact about settlement, not a position.
Source
Each fund's 13F-HR on EDGAR, linked per row; positions matched to DXCM by CUSIP from the SEC's own fails-to-deliver files; Schedule 13D and 13G from the company's own filing index, each read to confirm the company is the issuer named.
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