Parallax Volatility Advisers
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Parallax Volatility Advisers’s DexCom DXCM Stock Holding History

Parallax Volatility Advisers’s Portfolio DXCM Stock Details DXCM Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q1 		$939K Sell
15,000
-5,800
-28% -$404K ﹤0.01% 935
2025
Q4 		$1.38M Sell
20,800
-19,200
-48% -$1.24M ﹤0.01% 1037
2025
Q3 		$2.69M Buy
40,000
+25,000
+167% +$1.98M ﹤0.01% 836
2025
Q2 		$1.31M Hold
15,000
– – ﹤0.01% 1000
2025
Q1 		$1.02M Buy
15,000
+6,800
+83% +$555K ﹤0.01% 1038
2024
Q4 		$638K Sell
8,200
-92,000
-92% -$6.81M ﹤0.01% 1454
2024
Q3 		$6.72M Buy
100,200
+17,700
+21% +$1.45M 0.01% 686
2024
Q2 		$9.35M Buy
82,500
+38,600
+88% +$4.88M 0.02% 502
2024
Q1 		$6.09M Sell
43,900
-151,300
-78% -$19M 0.01% 661
2023
Q4 		$24.2M Sell
195,200
-4,900
-2% -$501K 0.05% 338
2023
Q3 		$18.7M Buy
200,100
+81,600
+69% +$9.2M 0.04% 350
2023
Q2 		$15.2M Buy
118,500
+23,800
+25% +$2.88M 0.03% 417
2023
Q1 		$11M Sell
94,700
-112,600
-54% -$12.6M 0.02% 553
2022
Q4 		$23.5M Buy
207,300
+69,400
+50% +$7.62M 0.04% 476
2022
Q3 		$11.1M Buy
137,900
+32,000
+30% +$2.71M 0.02% 733
2022
Q2 		$7.89M Sell
105,900
-32,100
-23% -$2.93M 0.01% 816
2022
Q1 		$17.6M Buy
+138,000
New +$15.1M 0.01% 557
2020
Q4 		– Sell
-982,400
Closed -$101M – 2826
2020
Q3 		$101M Buy
982,400
+478,400
+95% +$50M 0.08% 228
2020
Q2 		$51.1M Buy
504,000
+188,000
+59% +$16.8M 0.06% 257
2020
Q1 		$21.3M Buy
+316,000
New +$19.7M 0.03% 397
2018
Q1 		– Sell
-80,000
Closed -$1.15M – 2650
2017
Q4 		$1.15M Buy
+80,000
New +$1.04M ﹤0.01% 1135

Other funds holding DXCM

BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
VCM
Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM
VPM
Vanguard Portfolio Management Malvern, Pennsylvania $1.91T AUM
State Street
State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return
Baillie Gifford & Co
Baillie Gifford & Co Edinburgh, United Kingdom $97.9B AUM 20.73% 1-Year Est. Return
Invesco
Invesco Atlanta, Georgia $1.02T AUM 30.18% 1-Year Est. Return
AllianceBernstein
AllianceBernstein Nashville, Tennessee $309B AUM 23.92% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return
UBS AM
UBS AM Chicago, Illinois $481B AUM 26.39% 1-Year Est. Return
Wellington Management Group
Wellington Management Group Boston, Massachusetts $535B AUM 26.23% 1-Year Est. Return

Parallax Volatility Advisers's DXCM Position: Q1 2026 in Review

Parallax Volatility Advisers increased its DexCom (DXCM) stake by 360% in Q1 2026, buying an estimated $480K and bringing the position to 8,802 shares worth $551K. The position accounts for ﹤0.01% of the portfolio, ranked #1046.

Parallax Volatility Advisers first reported a position in DXCM in Q1 2017 and has held it in 21 quarters since. The position peaked at $12M in Q3 2020. 957 funds tracked by Wall St. Rank hold DXCM as of Q1 2026.

  • Parallax Volatility Advisers held 8,802 shares of DexCom worth $551K as of Q1 2026.
  • Parallax Volatility Advisers bought 6,888 DexCom shares in Q1 2026, an estimated $480K.
  • DexCom made up ﹤0.01% of Parallax Volatility Advisers's portfolio in Q1 2026, its #1046 holding.
  • Parallax Volatility Advisers first reported a position in DexCom in Q1 2017 and has held it in 21 quarters since.
  • Parallax Volatility Advisers's DexCom position peaked at $12M in Q3 2020.
  • 957 funds tracked by Wall St. Rank held DexCom as of Q1 2026.

Based on Parallax Volatility Advisers's 13F filing for Q1 2026, filed 15 May 2026.