Mario Gabelli's DXCM Position Overview
Mario Gabelli (via Gamco Investors, Inc. Et Al) currently holds 52,000 shares of DexCom, Inc. (DXCM) worth $3.5 M, representing 0.03% of the portfolio. First purchased in 2013-Q2, this long-term strategic position has been held for 50 quarters.
Based on 13F filings since 2013, Mario Gabelli has maintained a long-term strategic position in DXCM, representing a significant commitment to this investment thesis. Largest addition occurred in Q4 2023, adding 1,000 shares. Largest reduction occurred in Q4 2014, reducing 57,600 shares.
Analysis based on 13F filings available since 2013 Q2
Mario Gabelli's DexCom (DXCM) Holding Value Over Time
Track share changes against reported price movement
Quarterly DexCom (DXCM) Trades by Mario Gabelli
| Period | Bought/Sold (Sh.) | % Change | Qtr. End Shares | Reported Price |
|---|---|---|---|---|
| Q2 2013 | +300,004 | Add 0.00% | 300,000 | $5.61 |
| Q4 2013 | -4,000 | Reduce 1.33% | 296,000 | $8.85 |
| Q1 2014 | -12,000 | Reduce 4.05% | 284,000 | $10.34 |
| Q2 2014 | -2,000 | Reduce 0.70% | 282,000 | $9.91 |
| Q3 2014 | -18,000 | Reduce 6.38% | 264,000 | $10.00 |
| Q4 2014 | -57,600 | Reduce 21.82% | 206,400 | $13.76 |
| Q1 2015 | -3,200 | Reduce 1.55% | 203,200 | $15.59 |
| Q3 2015 | -21,600 | Reduce 10.63% | 181,600 | $21.46 |
| Q4 2015 | -4,000 | Reduce 2.20% | 177,600 | $20.47 |
| Q1 2016 | -4,000 | Reduce 2.25% | 173,600 | $16.98 |
| Q2 2016 | -6,000 | Reduce 3.46% | 167,600 | $19.83 |
| Q3 2016 | -1,200 | Reduce 0.72% | 166,400 | $21.92 |
| Q4 2016 | -17,200 | Reduce 10.34% | 149,200 | $14.93 |
| Q1 2017 | -13,200 | Reduce 8.85% | 136,000 | $21.18 |
| Q2 2017 | -4,000 | Reduce 2.94% | 132,000 | $18.29 |
| Q3 2017 | -4,000 | Reduce 3.03% | 128,000 | $12.23 |
| Q2 2018 | -28,000 | Reduce 21.88% | 100,000 | $23.75 |
| Q3 2018 | -4,000 | Reduce 4.00% | 96,000 | $35.76 |
| Q4 2018 | -14,000 | Reduce 14.58% | 82,000 | $29.95 |
| Q1 2019 | -2,000 | Reduce 2.44% | 80,000 | $29.78 |
| Q2 2019 | -4,000 | Reduce 5.00% | 76,000 | $37.46 |
| Q3 2019 | -4,400 | Reduce 5.79% | 71,600 | $37.30 |
| Q4 2019 | -15,600 | Reduce 21.79% | 56,000 | $54.68 |
| Q2 2020 | -2,000 | Reduce 3.57% | 54,000 | $101.35 |
| Q3 2020 | -800 | Reduce 1.48% | 53,200 | $103.06 |
| Q4 2020 | -1,200 | Reduce 2.26% | 52,000 | $92.42 |
| Q4 2023 | +1,000 | Add 1.92% | 53,000 | $124.09 |
| Q1 2024 | -1,000 | Reduce 1.89% | 52,000 | $138.70 |
Mario Gabelli's DexCom Investment FAQs
Mario Gabelli first purchased DexCom, Inc. (DXCM) in Q2 2013, acquiring 300,000 shares, as reported in their 13F filing for that period. Note: Analysis reflects filings available since Q2 2013; earlier records may be incomplete.
Mario Gabelli has held DexCom, Inc. (DXCM) for 50 quarters since Q2 2013. Note: Analysis reflects filings available since Q2 2013; earlier records may be incomplete.
Mario Gabelli's largest addition to DexCom, Inc. (DXCM) was in Q2 2013, adding 300,000 shares worth $1.68 M. Note: Analysis reflects filings available since Q2 2013; earlier records may be incomplete.
According to the latest 13F filing for Q3 2025, Mario Gabelli's firm, Gamco Investors, Inc. Et Al, owns 52,000 shares of DexCom, Inc. (DXCM), valued at approximately $3.5 M. Note: Analysis reflects filings available since Q2 2013; earlier records may be incomplete.
As of the Q3 2025 filing, DexCom, Inc. (DXCM) represents approximately 0.03% of Mario Gabelli's publicly disclosed stock portfolio, making it one of their key holdings. Note: Analysis reflects filings available since Q2 2013; earlier records may be incomplete.
Mario Gabelli's peak holding in DexCom, Inc. (DXCM) was 300,000 shares, as reported at the end of Q2 2013. Note: Analysis reflects filings available since Q2 2013; earlier records may be incomplete.