Parallax Volatility Advisers, L.P. Dexcom Inc Transaction History

Parallax Volatility Advisers, L.P.

$64.2 Billion
Q3 2025

A detailed history of Parallax Volatility Advisers, L.P. transactions in Dexcom Inc stock. As of the latest transaction made, Parallax Volatility Advisers, L.P. holds 29,677 shares of DXCM stock, worth $1.72 Million. This represents 0.0% of its overall portfolio holdings.

Number of Shares

29,677

Previous 15,000 97.85%

Holding current value

$1.72 Million

Previous $1.31 Million 52.48%

% of portfolio

0.0%

Previous 0.0%

22 transactions

Quarter	Operation	Price Per share	shares change	shares Held
Q3 2025 Nov 14, 2025	BUY	$66.46 - $89.53 $1.97 Million - $2.66 Million	29,677 New	29,677 $2 Million
Q4 2024 Feb 14, 2025	BUY	$65.68 - $81.01 $394 - $486	6 New	6 $0
Q2 2024 Aug 14, 2024	SELL	$110.31 - $140.45 $116,046 - $147,753	-1,052 Reduced 17.35%	5,013 $568,000
Q1 2024 May 15, 2024	BUY	$114.22 - $140.1 $692,744 - $849,706	6,065 New	6,065 $841,000
Q3 2023 Nov 14, 2023	BUY	$86.06 - $137.93 $2.38 Million - $3.81 Million	27,645 Added 46075.0%	27,705 $2.58 Million

Q4 2022 Feb 14, 2023	SELL	$84.98 - $122.67 $2.18 Million - $3.15 Million	-25,645 Reduced 99.77%	60 $6,000
Q3 2022 Nov 14, 2022	BUY	$76.35 - $94.18 $1.27 Million - $1.56 Million	16,588 Added 181.95%	25,705 $2.07 Million
Q2 2022 Aug 15, 2022	BUY	$67.99 - $132.89 $363,066 - $709,632	5,340 Added 141.38%	9,117 $679,000
Q1 2022 May 16, 2022	SELL	$94.08 - $130.2 $367,382 - $508,430	-3,905 Reduced 50.83%	3,777 $1.93 Million
Q4 2021 Feb 14, 2022	SELL	$129.87 - $162.82 $4.28 Million - $5.37 Million	-32,987 Reduced 81.11%	7,682 $4.13 Million
Q3 2021 Nov 15, 2021	BUY	$106.71 - $143.18 $3.25 Million - $4.36 Million	30,474 Added 298.91%	40,669 $22.2 Million
Q2 2021 Aug 16, 2021	SELL	$80.99 - $107.93 $5.88 Million - $7.84 Million	-72,645 Reduced 87.69%	10,195 $4.35 Million
Q1 2021 May 14, 2021	BUY	$84.79 - $104.74 $4.33 Million - $5.34 Million	51,029 Added 160.41%	82,840 $29.8 Million
Q4 2020 Feb 16, 2021	BUY	$78.0 - $104.5 $207,558 - $278,074	2,661 Added 9.13%	31,811 $11.8 Million
Q3 2020 Nov 13, 2020	BUY	$95.51 - $112.95 $2.07 Million - $2.44 Million	21,634 Added 287.84%	29,150 $12 Million
Q2 2020 Aug 14, 2020	BUY	$62.68 - $105.34 $86,373 - $145,158	1,378 Added 22.45%	7,516 $3.05 Million
Q1 2020 May 15, 2020	BUY	$47.79 - $75.63 $293,335 - $464,216	6,138 New	6,138 $1.65 Million
Q4 2018 Feb 14, 2019	SELL	$26.99 - $37.37 $1,025 - $1,420	-38 Closed	0 $0
Q3 2018 Nov 14, 2018	BUY	$23.35 - $36.72 $887 - $1,395	38 New	38 $5,000
Q1 2018 May 15, 2018	SELL	$13.06 - $18.54 $85,556 - $121,455	-6,551 Closed	0 $0
Q4 2017 Feb 14, 2018	BUY	$11.12 - $15.38 $33,982 - $47,001	3,056 Added 87.44%	6,551 $376,000
Q3 2017 Nov 14, 2017	BUY	$11.36 - $18.98 $39,703 - $66,335	3,495	3,495 $171,000

Others Institutions Holding DXCM

# of Institutions

1,088

Shares Held

376M

Call Options Held

6.76M

Put Options Held

7.24M

View Full List

About DEXCOM INC

Ticker DXCM
Exchange NASDAQ
Sector Healthcare
Industry Medical Devices
Shares Outstandng 386,257,984
Market Cap $22.4B
Description
DexCom, Inc., a medical device company, focuses on the design, development, and commercialization of continuous glucose monitoring (CGM) systems in the United States and internationally. The company provides its systems for use by people with diabetes, as well as for use by healthcare providers. Its products include DexCom G6, an integrated CGM ...

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Parallax Volatility Advisers, L.P. Dexcom Inc Transaction History