DXCM
DexCom, Inc. · Healthcare · Medical - Devices
Momentum inputs (comparable managers):
holder breadth -9.5% ·
share flow +3.0% ·
net new positions -10.5%
— formula
Concentrated accumulation — rising shares among fewer holders
All ownership figures: tracked 13F managers only, common-stock positions, reporting period Q3 2024
| Quarter | Holders | Δ | Shares | Reported value | New | Exits |
|---|---|---|---|---|---|---|
| Q2 2026 | 168 | +2 | 305.11M | $20.50B | +7 | −5 |
| Q1 2026 | 169 | 0 | 297.37M | $18.71B | +3 | −4 |
| Q4 2025 | 168 | 0 | 314.09M | $20.85B | +1 | — |
| Q3 2025 | 26 | +1 | 175.97M | $11.84B | +1 | −1 |
| Q2 2025 | 23 | -1 | 152.74M | $13.33B | — | −1 |
| Q1 2025 | 21 | 0 | 61.18M | $4.17B | — | — |
| Q4 2024 | 21 | +1 | 69.06M | $5.37B | +1 | — |
| Q3 2024 | 19 | -2 | 54.56M | $3.66B | — | −2 |
| Q2 2024 | 21 | — | 52.99M | $6.01B | — | — |
| # | Manager | Shares | Δ shares | Value | Their weight | Held | ||
|---|---|---|---|---|---|---|---|---|
| 1 | Baillie Gifford ✦ | 15.02M | -2.0% | $1.01B | 0.8% | ▼ Trim | 2 | SEC ↗ |
| 2 | Baillie Gifford ✦ | 15.02M | -2.0% | $1.01B | 0.8% | ▼ Trim | 2 | SEC ↗ |
| 3 | Baillie Gifford ✦ | 15.02M | -2.0% | $1.01B | 0.8% | ▼ Trim | 2 | SEC ↗ |
| 4 | Baillie Gifford ✦ | 15.02M | -2.0% | $1.01B | 0.8% | ▼ Trim | 2 | SEC ↗ |
| 5 | Geode Capital Management ✦ (passive) | 9.94M | +2.2% | $664.06M | 0.1% | ▲ Add | 2 | SEC ↗ |
| 6 | Geode Capital Management ✦ (passive) | 9.94M | +2.2% | $664.06M | 0.1% | ▲ Add | 2 | SEC ↗ |
| 7 | Capital World Investors ✦ | 7.63M | -8.2% | $511.36M | 0.1% | ▼ Trim | 2 | SEC ↗ |
| 8 | Wellington Management ✦ | 5.70M | +6.9% | $382.03M | 0.1% | ▲ Add | 2 | SEC ↗ |
| 9 | Wellington Management ✦ | 5.70M | +6.9% | $382.03M | 0.1% | ▲ Add | 2 | SEC ↗ |
| 10 | Wellington Management ✦ | 5.70M | +6.9% | $382.03M | 0.1% | ▲ Add | 2 | SEC ↗ |
| 11 | Wellington Management ✦ | 5.70M | +6.9% | $382.03M | 0.1% | ▲ Add | 2 | SEC ↗ |
| 12 | Wellington Management ✦ | 5.70M | +6.9% | $382.03M | 0.1% | ▲ Add | 2 | SEC ↗ |
| 13 | Wellington Management ✦ | 5.70M | +6.9% | $382.03M | 0.1% | ▲ Add | 2 | SEC ↗ |
| 14 | Wellington Management ✦ | 5.70M | +6.9% | $382.03M | 0.1% | ▲ Add | 2 | SEC ↗ |
| 15 | Wellington Management ✦ | 5.70M | +6.9% | $382.03M | 0.1% | ▲ Add | 2 | SEC ↗ |
| 16 | Wellington Management ✦ | 5.70M | +6.9% | $382.03M | 0.1% | ▲ Add | 2 | SEC ↗ |
| 17 | Wellington Management ✦ | 5.70M | +6.9% | $382.03M | 0.1% | ▲ Add | 2 | SEC ↗ |
| 18 | Wellington Management ✦ | 5.70M | +6.9% | $382.03M | 0.1% | ▲ Add | 2 | SEC ↗ |
| 19 | Wellington Management ✦ | 5.70M | +6.9% | $382.03M | 0.1% | ▲ Add | 2 | SEC ↗ |
| 20 | Norges Bank ✦ (passive) | 5.00M | -7.2% | $335.48M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 21 | T. Rowe Price ✦ | 3.22M | -6.8% | $215.54M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 22 | T. Rowe Price ✦ | 3.22M | -6.8% | $215.54M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 23 | D. E. Shaw & Co. ✦ | 2.43M | +6697.8% | $162.88M | 0.2% | ▲ Add | 2 | SEC ↗ |
| 24 | D. E. Shaw & Co. ✦ | 2.43M | +6697.8% | $162.88M | 0.2% | ▲ Add | 2 | SEC ↗ |
| 25 | Citadel Advisors ✦ | 1.23M | +69.5% | $82.72M | 0.1% | ▲ Add | 2 | SEC ↗ |
| 26 | Fisher Asset Management ✦ | 856.12K | +10.6% | $57.39M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 27 | Renaissance Technologies ✦ | 830.97K | +79.6% | $55.71M | 0.1% | ▲ Add | 2 | SEC ↗ |
| 28 | Two Sigma Investments ✦ | 825.00K | +9.7% | $55.31M | 0.1% | ▲ Add | 2 | SEC ↗ |
| 29 | Adage Capital Partners ✦ | 547.95K | +40.9% | $36.73M | 0.1% | ▲ Add | 2 | SEC ↗ |
| 30 | Millennium Management ✦ | 341.64K | +429.8% | $22.90M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 31 | Millennium Management ✦ | 341.64K | +429.8% | $22.90M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 32 | Bridgewater Associates ✦ | 319.63K | -8.0% | $21.43M | 0.1% | ▼ Trim | 2 | SEC ↗ |
| 33 | Marshall Wace ✦ | 264.00K | -24.9% | $17.70M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 34 | AQR Capital Management ✦ | 197.29K | +132.1% | $13.23M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 35 | AQR Capital Management ✦ | 197.29K | +132.1% | $13.23M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 36 | AQR Capital Management ✦ | 197.29K | +132.1% | $13.23M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 37 | Arrowstreet Capital ✦ | 81.42K | +48.1% | $5.46M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 38 | Gotham Asset Management ✦ | 78.80K | +64.6% | $5.28M | 0.1% | ▲ Add | 2 | SEC ↗ |
| 39 | GAMCO Investors ✦ | 52.00K | 0.0% | $3.49M | 0.0% | Held | 2 | SEC ↗ |
“Their weight” = the position's share of that manager's reported 13F equity value — the conviction measure. ✦ = curated manager.
New buyers
| No new tracked buyers this quarter. |
Exited
| Tiger Global Management | $130.71M | was 0.6% |
| Soros Fund Management | $18.91M | was 0.6% |
Full-market context: across ALL 13F filers (SEC structured data, Q1 2026): 1 holders, 15.50K shares, $973 reported. This is a different, older period than the tracked-universe figures above and the two are never mixed.
What else this security's tracked holders most often hold — shared-ownership counts, not fundamental relationships.
Open-market purchases (P)
No open-market insider purchases in our coverage window.
Open-market sales (S)
Officer, Director · 19.31K sh · $1.73M
Officer, Director · 7.35K sh · $667,332
Officer, Director · 97 sh · $8,867
Officer · 1.70K sh · $156,281
Director · 1.01K sh · $89,349
Awards, exercises and tax withholding are never counted as buys or sales here. Methodology