DXCM — DEXCOM INC
Price · 2024-08-26 → 2026-08-21
499 daily closes shownAnonymous view is capped at two years of history. A free account extends it to five, and Pro opens the whole archive back to 2016-01-04.
Performance
Technicals
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Measured signals that fired on DXCM
| date | signal | measured base rate |
|---|---|---|
| 2026-08-10 | Equal highs taken out structure | -0.70% over 21 days · t = -8.28 · n = 68,636 statistically distinguishable from its control group |
| 2026-08-06 | Fair value gap, bearish structure | -0.45% over 21 days · t = -3.29 · n = 108,591 statistically distinguishable from its control group |
| 2026-08-03 | Fair value gap, bullish structure | -0.67% over 21 days · t = -6.43 · n = 111,973 statistically distinguishable from its control group |
| 2026-08-03 | Breakout to a 52-week high price | -1.00% over 21 days · t = -8.58 · n = 24,386 statistically distinguishable from its control group |
| 2026-07-28 | Fair value gap, bullish structure | -0.67% over 21 days · t = -6.43 · n = 111,973 statistically distinguishable from its control group |
| 2026-07-23 | Fair value gap, bearish structure | -0.45% over 21 days · t = -3.29 · n = 108,591 statistically distinguishable from its control group |
Excess return against a matched control group, on a point-in-time universe that includes delisted companies. Most families do not survive that. How the measurement works →
Insider transactions (Form 4)
| date | insider | what | shares | price | value |
|---|---|---|---|---|---|
| 2026-08-14 | Brown Michael Jon EVP Chief Legal Compliance Off | Open-market sale 10b5-1 plan | 1.7K | 91.93 | 156.3K |
| 2026-08-12 | Heller Bridgette P Director | Open-market sale 10b5-1 plan | 1.0K | 88.29 | 89.3K |
| 2026-08-12 | AUGUSTINOS NICHOLAS Director | Gift | 1.1K | 0.00 | 0 |
| 2026-08-03 | FOLETTA MARK G Director | Open-market sale 10b5-1 plan | 2.0K | 85.32 | 170.6K |
| 2026-07-31 | FOLETTA MARK G Director | Open-market sale 10b5-1 plan | 2.0K | 80.00 | 160.0K |
| 2026-07-20 | SAYER KEVIN R Executive Chair | Open-market sale 10b5-1 plan | 26.8K | 76.32 | 2.0M |
| 2026-07-15 | Brown Michael Jon EVP Chief Legal Compliance Off | Open-market sale 10b5-1 plan | 1.7K | 74.42 | 126.5K |
| 2026-07-06 | SAYER KEVIN R Executive Chair | Open-market sale 10b5-1 plan | 26.8K | 72.00 | 1.9M |
| 2026-06-15 | FOLETTA MARK G Director | Open-market sale 10b5-1 plan | 3.8K | 74.10 | 281.7K |
| 2026-06-15 | Brown Michael Jon EVP Chief Legal Compliance Off | Open-market sale 10b5-1 plan | 1.7K | 75.55 | 128.4K |
Open-market purchases (code P) are the informative ones. Grants, option exercises and tax withholding are compensation mechanics, not decisions. How to read a Form 4 →
Largest institutional holders
| manager | value | shares |
|---|---|---|
| BlackRock, Inc. | 2.4B | 39.0M |
| VANGUARD CAPITAL MANAGEMENT LLC | 1.6B | 25.0M |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 1.2B | 19.2M |
| STATE STREET CORP | 1.1B | 17.9M |
| BAILLIE GIFFORD & CO | 979.7M | 15.6M |
| ALLIANCEBERNSTEIN L.P. | 857.7M | 12.9M |
| GEODE CAPITAL MANAGEMENT, LLC | 772.9M | 12.3M |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | 612.1M | 9.7M |
| WELLINGTON MANAGEMENT GROUP LLP | 585.7M | 9.3M |
| Amundi | 397.7M | 6.3M |
13F positions as of 2026-03-31, filed up to 45 days after quarter end. Long-only US equity — shorts and derivatives never appear. What 13F does and does not show →
Short selling
This is off-exchange short volume, not short interest: it is flow, not position, and 40–50% is normal because market makers short to fill your buy. Why that number misleads →
Recent headlines
- Dexcom stock presses a fresh 52-week high as Q2 growth and raised 2026 outlook support the rally - Ad-hoc-news.de · 2026-08-22 · Ad-hoc-news.de
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