Twin Tree Management’s Costco COST Stock Holding History

Twin Tree Management’s Portfolio COST Stock Details COST Fund Activity

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2026 Q1	$996K	Sell	1,000 -2,500	-71%	-$2.44M	0.02%	727
2025 Q4	$3.02M	Sell	3,500 -11,700	-77%	-$10.6M	0.03%	683
2025 Q3	$14.1M	Sell	15,200 -58,000	-79%	-$55.6M	0.06%	381
2025 Q2	$72.5M	Sell	73,200 -300	-0.4%	-$298K	0.14%	153
2025 Q1	$69.5M	Buy	73,500 +59,700	+433%	+$58.2M	0.13%	113
2024 Q4	$12.6M	Sell	13,800 -10,700	-44%	-$9.93M	0.02%	601
2024 Q3	$21.7M	Sell	24,500 -6,400	-21%	-$5.55M	0.04%	382
2024 Q2	$26.3M	Sell	30,900 -28,600	-48%	-$22.3M	0.06%	298
2024 Q1	$43.6M	Sell	59,500 -17,100	-22%	-$12.2M	0.1%	203
2023 Q4	$50.6M	Buy	+76,600	New	+$45.4M	0.1%	203
2023 Q3	–	Sell	-247,600	Closed	-$133M	–	1262
2023 Q2	$133M	Buy	247,600 +150,300	+154%	+$76.1M	0.2%	83
2023 Q1	$48.3M	Buy	97,300 +54,800	+129%	+$26.9M	0.09%	189
2022 Q4	$19.4M	Sell	42,500 -26,400	-38%	-$12.9M	0.04%	404
2022 Q3	$32.5M	Hold	68,900	–	–	0.06%	252
2022 Q2	$33M	Sell	68,900 -31,300	-31%	-$15.9M	0.05%	273
2022 Q1	$57.7M	Buy	+100,200	New	+$52.6M	0.09%	161
2021 Q4	–	Sell	-26,700	Closed	-$12M	–	1613
2021 Q3	$12M	Hold	26,700	–	–	0.03%	517
2021 Q2	$10.6M	Buy	+26,700	New	+$10.1M	0.03%	498
2021 Q1	–	Sell	-27,100	Closed	-$10.2M	–	1387
2020 Q4	$10.2M	Sell	27,100 -25,300	-48%	-$9.45M	0.04%	436
2020 Q3	$18.6M	Buy	52,400 +11,800	+29%	+$3.97M	0.08%	283
2020 Q2	$12.3M	Sell	40,600 -15,300	-27%	-$4.65M	0.05%	400
2020 Q1	$15.9M	Buy	55,900 +1,800	+3%	+$546K	0.08%	223
2019 Q4	$15.9M	Buy	54,100 +37,000	+216%	+$11M	0.06%	259
2019 Q3	$4.93M	Buy	+17,100	New	+$4.81M	0.02%	480
2018 Q3	–	Sell	-25,600	Closed	-$5.35M	–	1081
2018 Q2	$5.35M	Sell	25,600 -1,000	-4%	-$198K	0.03%	411
2018 Q1	$5.01M	Sell	26,600 -148,100	-85%	-$27.9M	0.04%	340
2017 Q4	$32.5M	Sell	174,700 -22,200	-11%	-$3.83M	0.24%	66
2017 Q3	$32.3M	Buy	196,900 +154,400	+363%	+$24.3M	0.26%	76
2017 Q2	$6.8M	Buy	+42,500	New	+$7.32M	0.05%	313
2016 Q4	–	Sell	-7,800	Closed	-$1.19M	–	1195
2016 Q3	$1.19M	Sell	7,800 -162,900	-95%	-$26.3M	0.02%	621
2016 Q2	$26.8M	Buy	170,700 +154,000	+922%	+$23.3M	0.42%	33
2016 Q1	$2.63M	Buy	+16,700	New	+$2.53M	0.05%	355
2015 Q4	–	Sell	-4,400	Closed	-$636K	–	1412
2015 Q3	$636K	Sell	4,400 -8,800	-67%	-$1.26M	0.02%	690
2015 Q2	$1.78M	Sell	13,200 -2,900	-18%	-$417K	0.04%	437
2015 Q1	$2.44M	Buy	16,100 +8,200	+104%	+$1.2M	0.06%	330
2014 Q4	$1.12M	Sell	7,900 -21,600	-73%	-$2.94M	0.03%	556
2014 Q3	$3.7M	Sell	29,500 -7,900	-21%	-$955K	0.1%	227
2014 Q2	$4.31M	Sell	37,400 -14,900	-28%	-$1.71M	0.1%	223
2014 Q1	$5.84M	Buy	52,300 +40,100	+329%	+$4.59M	0.12%	193
2013 Q4	$1.45M	Sell	12,200 -9,100	-43%	-$1.09M	0.03%	504
2013 Q3	$2.45M	Buy	21,300 +5,600	+36%	+$646K	0.08%	270
2013 Q2	$1.74M	Buy	+15,700	New	+$1.72M	0.07%	336

Other funds holding COST

BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return

VCM

Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM

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

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

VPM

Vanguard Portfolio Management Malvern, Pennsylvania $1.91T AUM

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

Morgan Stanley New York $1.66T AUM 25.57% 1-Year Est. Return

Bank of America Charlotte, North Carolina $1.37T AUM 24.88% 1-Year Est. Return

DAM

Diamant Asset Management Ridgefield, Connecticut $137B AUM 18.02% 1-Year Est. Return

Fidelity Investments Boston, Massachusetts $1.9T AUM 41.92% 1-Year Est. Return

Twin Tree Management's COST Position: Q1 2026 in Review

Twin Tree Management opened a new position in Costco (COST) in Q1 2026: 2,283 shares worth $2.27M. The stake represents 0.05% of the portfolio and ranks #431 among its holdings. This is a return to the name: Twin Tree Management previously reported a position in COST as recently as Q3 2025.

Twin Tree Management first reported a position in COST in Q3 2013 and has held it in 36 quarters since. The position peaked at $61.8M in Q4 2024. 4,236 funds tracked by Wall St. Rank hold COST as of Q1 2026.

Twin Tree Management held 2,283 shares of Costco worth $2.27M as of Q1 2026.
Costco was a new Twin Tree Management position in Q1 2026.
Costco made up 0.05% of Twin Tree Management's portfolio in Q1 2026, its #431 holding.
Twin Tree Management first reported a position in Costco in Q3 2013 and has held it in 36 quarters since.
Twin Tree Management's Costco position peaked at $61.8M in Q4 2024.
4,236 funds tracked by Wall St. Rank held Costco as of Q1 2026.

Based on Twin Tree Management's 13F filing for Q1 2026, filed 14 May 2026.