Group One Trading’s DexCom DXCM Stock Holding History

Group One Trading’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	$1.01M	Sell	16,100 -94,800	-85%	-$6.6M	﹤0.01%	2713
2025 Q4	$7.36M	Sell	110,900 -18,900	-15%	-$1.22M	0.01%	1173
2025 Q3	$8.73M	Buy	129,800 +2,500	+2%	+$198K	0.02%	1005
2025 Q2	$11.1M	Buy	127,300 +114,900	+927%	+$9.01M	0.02%	747
2025 Q1	$847K	Sell	12,400 -6,500	-34%	-$530K	﹤0.01%	2605
2024 Q4	$1.47M	Buy	18,900 +2,200	+13%	+$163K	﹤0.01%	2193
2024 Q3	$1.12M	Buy	16,700 +14,500	+659%	+$1.19M	﹤0.01%	2198
2024 Q2	$249K	Sell	2,200 -26,600	-92%	-$3.36M	﹤0.01%	3214
2024 Q1	$3.99M	Sell	28,800 -35,400	-55%	-$4.45M	0.02%	975
2023 Q4	$7.97M	Buy	64,200 +27,200	+74%	+$2.78M	0.02%	826
2023 Q3	$3.45M	Buy	37,000 +5,900	+19%	+$665K	0.01%	1192
2023 Q2	$4M	Buy	31,100 +3,000	+11%	+$363K	0.01%	1143
2023 Q1	$3.26M	Sell	28,100 -110,400	-80%	-$12.4M	0.01%	1135
2022 Q4	$15.7M	Sell	138,500 -12,700	-8%	-$1.39M	0.04%	502
2022 Q3	$12.2M	Buy	151,200 +12,000	+9%	+$1.02M	0.02%	627
2022 Q2	$10.4M	Sell	139,200 -43,600	-24%	-$3.98M	0.02%	815
2022 Q1	$23.4M	Sell	182,800 -79,600	-30%	-$8.71M	0.02%	535
2021 Q4	$35.2M	Sell	262,400 -208,800	-44%	-$30M	0.03%	420
2021 Q3	$64.4M	Buy	471,200 +150,800	+47%	+$19M	0.07%	211
2021 Q2	$34.2M	Sell	320,400 -5,600	-2%	-$538K	0.04%	374
2021 Q1	$29.3M	Sell	326,000 -96,000	-23%	-$9.01M	0.04%	385
2020 Q4	$39M	Buy	422,000 +381,200	+934%	+$34M	0.07%	247
2020 Q3	$4.21M	Buy	40,800 +21,600	+113%	+$2.26M	0.01%	1032
2020 Q2	$1.95M	Sell	19,200 -34,000	-64%	-$3.04M	0.01%	1486
2020 Q1	$3.58M	Sell	53,200 -18,400	-26%	-$1.14M	0.03%	703
2019 Q4	$3.92M	Buy	71,600 +54,000	+307%	+$2.56M	0.03%	830
2019 Q3	$657K	Buy	17,600 +14,400	+450%	+$559K	0.01%	2105
2019 Q2	$120K	Buy	+3,200	New	+$101K	﹤0.01%	3207
2019 Q1	–	Sell	-1,600	Closed	-$48K	–	4929
2018 Q4	$48K	Sell	1,600 -6,000	-79%	-$190K	﹤0.01%	3582
2018 Q3	$272K	Sell	7,600 -3,600	-32%	-$112K	﹤0.01%	2782
2018 Q2	$266K	Sell	11,200 -38,800	-78%	-$823K	﹤0.01%	2819
2018 Q1	$927K	Buy	50,000 +2,400	+5%	+$35.5K	0.01%	1586
2017 Q4	$683K	Sell	47,600 -8,000	-14%	-$104K	﹤0.01%	2001
2017 Q3	$680K	Sell	55,600 -18,800	-25%	-$332K	0.01%	1843
2017 Q2	$1.36M	Sell	74,400 -88,800	-54%	-$1.64M	0.01%	1221
2017 Q1	$3.46M	Buy	+163,200	New	+$3.19M	0.04%	563
2016 Q4	–	Sell	-11,200	Closed	-$245K	–	4498
2016 Q3	$245K	Buy	+11,200	New	+$249K	﹤0.01%	2320
2016 Q2	–	Sell	-8,000	Closed	-$136K	–	4678
2016 Q1	$136K	Buy	+8,000	New	+$134K	﹤0.01%	2605
2015 Q4	–	Sell	-126,000	Closed	-$2.71M	–	4811
2015 Q3	$2.71M	Buy	126,000 +56,400	+81%	+$1.26M	0.04%	617
2015 Q2	$1.39M	Buy	69,600 +2,000	+3%	+$35.1K	0.02%	970
2015 Q1	$1.05M	Buy	67,600 +37,600	+125%	+$568K	0.02%	1037
2014 Q4	$413K	Sell	30,000 -56,800	-65%	-$695K	0.01%	1697
2014 Q3	$868K	Buy	86,800 +61,200	+239%	+$626K	0.01%	1205
2014 Q2	$254K	Buy	25,600 +1,600	+7%	+$14.2K	﹤0.01%	2185
2014 Q1	$248K	Buy	+24,000	New	+$248K	﹤0.01%	2260

Other funds holding DXCM

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 Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return

Baillie Gifford & Co Edinburgh, United Kingdom $97.9B AUM 20.73% 1-Year Est. Return

Invesco Atlanta, Georgia $1.02T AUM 30.18% 1-Year Est. Return

AllianceBernstein Nashville, Tennessee $309B AUM 23.92% 1-Year Est. Return

Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return

UBS AM Chicago, Illinois $481B AUM 26.39% 1-Year Est. Return

Wellington Management Group Boston, Massachusetts $535B AUM 26.23% 1-Year Est. Return

Group One Trading's DXCM Position: Q1 2026 in Review

Group One Trading reduced its DexCom (DXCM) stake by 94% in Q1 2026, selling an estimated $1.92M and leaving 1,706 shares worth $107K. The position accounts for ﹤0.01% of the portfolio, ranked #4659.

Group One Trading first reported a position in DXCM in Q4 2013 and has held it in 34 quarters since. The position peaked at $17.3M in Q4 2020. 956 funds tracked by Wall St. Rank hold DXCM as of Q1 2026.

Group One Trading held 1,706 shares of DexCom worth $107K as of Q1 2026.
Group One Trading sold 27,571 DexCom shares in Q1 2026, an estimated $1.92M.
DexCom made up ﹤0.01% of Group One Trading's portfolio in Q1 2026, its #4659 holding.
Group One Trading first reported a position in DexCom in Q4 2013 and has held it in 34 quarters since.
Group One Trading's DexCom position peaked at $17.3M in Q4 2020.
956 funds tracked by Wall St. Rank held DexCom as of Q1 2026.

Based on Group One Trading's 13F filing for Q1 2026, filed 13 May 2026.