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
Q2 		– Sell
-15,000
Closed -$939K – 1568
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 Sell
138,000
-203,200
-60% -$22.2M 0.01% 557
2021
Q4 		$45.8M Sell
341,200
-88,400
-21% -$12.7M 0.04% 366
2021
Q3 		$58.7M Buy
429,600
+330,000
+331% +$41.6M 0.04% 324
2021
Q2 		$10.6M Sell
99,600
-739,200
-88% -$71M 0.01% 868
2021
Q1 		$75.4M Sell
838,800
-24,000
-3% -$2.25M 0.07% 242
2020
Q4 		$79.8M Sell
862,800
-119,600
-12% -$10.7M 0.06% 302
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 $6.73T AUM 46.02% 1-Year Est. Return
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
Vanguard Portfolio Management
Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
Invesco
Invesco Atlanta, Georgia $1.26T AUM 61.52% 1-Year Est. Return
Baillie Gifford & Co
Baillie Gifford & Co Edinburgh, United Kingdom $110B AUM 4.8% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return
UBS AM
UBS AM Chicago, Illinois $550B AUM 43.33% 1-Year Est. Return
AllianceBernstein
AllianceBernstein Nashville, Tennessee $302B AUM 26.44% 1-Year Est. Return
Wellington Management Group
Wellington Management Group Boston, Massachusetts $580B AUM 38.23% 1-Year Est. Return

Parallax Volatility Advisers's DXCM Position: Q2 2026 in Review

Parallax Volatility Advisers reduced its DexCom (DXCM) stake by 61% in Q2 2026, selling an estimated $358K and leaving 3,435 shares worth $231K. The position accounts for ﹤0.01% of the portfolio, ranked #1219.

Parallax Volatility Advisers first reported a position in DXCM in Q1 2017 and has held it in 27 quarters since. The position peaked at $29.8M in Q1 2021. 974 funds tracked by Wall St. Rank hold DXCM as of Q2 2026.

  • Parallax Volatility Advisers held 3,435 shares of DexCom worth $231K as of Q2 2026.
  • Parallax Volatility Advisers sold 5,367 DexCom shares in Q2 2026, an estimated $358K.
  • DexCom made up ﹤0.01% of Parallax Volatility Advisers's portfolio in Q2 2026, its #1219 holding.
  • Parallax Volatility Advisers first reported a position in DexCom in Q1 2017 and has held it in 27 quarters since.
  • Parallax Volatility Advisers's DexCom position peaked at $29.8M in Q1 2021.
  • 974 funds tracked by Wall St. Rank held DexCom as of Q2 2026.

Based on Parallax Volatility Advisers's 13F filing for Q2 2026, filed 14 Aug 2026.