Parallax Volatility Advisers
COST icon

Parallax Volatility Advisers’s Costco COST Stock Holding History

Parallax Volatility Advisers’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 		$97.2M Buy
96,600
+57,300
+146% +$55.8M 0.25% 69
2025
Q4 		$33.9M Buy
39,300
+2,000
+5% +$1.81M 0.07% 206
2025
Q3 		$34.5M Hold
37,300
– – 0.05% 191
2025
Q2 		$36.9M Sell
37,300
-10,400
-22% -$10.3M 0.08% 170
2025
Q1 		$45.1M Sell
47,700
-28,800
-38% -$28.1M 0.12% 138
2024
Q4 		$70.1M Buy
76,500
+67,100
+714% +$62.3M 0.14% 118
2024
Q3 		$8.33M Buy
9,400
+3,000
+47% +$2.6M 0.02% 615
2024
Q2 		$5.44M Sell
6,400
-9,600
-60% -$7.49M 0.01% 696
2024
Q1 		$11.7M Sell
16,000
-16,600
-51% -$11.9M 0.03% 472
2023
Q4 		$21.5M Buy
32,600
+6,100
+23% +$3.62M 0.04% 372
2023
Q3 		$15M Sell
26,500
-49,100
-65% -$27.1M 0.03% 410
2023
Q2 		$40.7M Buy
75,600
+24,800
+49% +$12.5M 0.09% 191
2023
Q1 		$25.2M Sell
50,800
-44,600
-47% -$21.9M 0.05% 327
2022
Q4 		$43.6M Buy
95,400
+57,900
+154% +$28.3M 0.07% 307
2022
Q3 		$17.7M Sell
37,500
-95,900
-72% -$49.9M 0.03% 546
2022
Q2 		$63.9M Buy
133,400
+64,700
+94% +$32.8M 0.06% 222
2022
Q1 		$39.6M Buy
+68,700
New +$36.1M 0.02% 326
2020
Q4 		– Sell
-891,100
Closed -$316M – 2664
2020
Q3 		$316M Buy
891,100
+317,300
+55% +$107M 0.23% 67
2020
Q2 		$174M Sell
573,800
-35,800
-6% -$10.9M 0.2% 69
2020
Q1 		$174M Buy
609,600
+133,200
+28% +$40.4M 0.22% 62
2019
Q4 		$140M Buy
476,400
+219,100
+85% +$65.1M 0.16% 88
2019
Q3 		$74.1M Buy
257,300
+28,700
+13% +$8.08M 0.08% 132
2019
Q2 		$60.4M Sell
228,600
-38,100
-14% -$9.5M 0.07% 151
2019
Q1 		$64.6M Sell
266,700
-272,000
-50% -$59.5M 0.07% 128
2018
Q4 		$110M Buy
538,700
+27,700
+5% +$6.19M 0.15% 107
2018
Q3 		$120M Buy
511,000
+197,900
+63% +$44.6M 0.15% 62
2018
Q2 		$65.4M Sell
313,100
-365,900
-54% -$72.3M 0.09% 94
2018
Q1 		$128M Buy
679,000
+614,600
+954% +$116M 0.17% 60
2017
Q4 		$12M Hold
64,400
– – 0.02% 364
2017
Q3 		$10.6M Sell
64,400
-150,800
-70% -$23.7M 0.02% 390
2017
Q2 		$34.4M Sell
215,200
-203,300
-49% -$35M 0.07% 168
2017
Q1 		$70.2M Sell
418,500
-136,400
-25% -$22.9M 0.14% 90
2016
Q4 		$88.8M Buy
554,900
+34,000
+7% +$5.19M 0.17% 86
2016
Q3 		$79.4M Buy
520,900
+235,100
+82% +$38M 0.15% 90
2016
Q2 		$44.9M Buy
285,800
+172,900
+153% +$26.2M 0.09% 151
2016
Q1 		$17.8M Buy
112,900
+30,000
+36% +$4.55M 0.04% 261
2015
Q4 		$13.4M Buy
82,900
+37,000
+81% +$5.85M 0.03% 371
2015
Q3 		$6.64M Sell
45,900
-63,900
-58% -$9.12M 0.01% 596
2015
Q2 		$14.8M Sell
109,800
-26,300
-19% -$3.78M 0.03% 363
2015
Q1 		$20.6M Sell
136,100
-527,500
-79% -$77.4M 0.05% 303
2014
Q4 		$94.1M Sell
663,600
-366,600
-36% -$49.8M 0.27% 71
2014
Q3 		$129M Buy
1,030,200
+967,200
+1,535% +$117M 0.41% 36
2014
Q2 		$7.25M Buy
63,000
+23,700
+60% +$2.72M 0.03% 385
2014
Q1 		$4.39M Sell
39,300
-18,700
-32% -$2.14M 0.03% 415
2013
Q4 		$6.9M Buy
58,000
+50,800
+706% +$6.07M 0.03% 365
2013
Q3 		$830K Sell
7,200
-45,800
-86% -$5.29M ﹤0.01% 715
2013
Q2 		$5.86M Buy
+53,000
New +$5.79M 0.03% 374

Other funds holding COST

BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
VCM
Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM
State Street
State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return
Invesco
Invesco Atlanta, Georgia $1.02T AUM 30.18% 1-Year Est. Return
VPM
Vanguard Portfolio Management Malvern, Pennsylvania $1.91T AUM
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return
Morgan Stanley
Morgan Stanley New York $1.66T AUM 25.57% 1-Year Est. Return
Bank of America
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
Fidelity Investments Boston, Massachusetts $1.9T AUM 41.92% 1-Year Est. Return

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

Parallax Volatility Advisers increased its Costco (COST) stake by 160,500% in Q1 2026, buying an estimated $3.13M and bringing the position to 3,212 shares worth $3.23M. The position accounts for 0.01% of the portfolio, ranked #686.

Parallax Volatility Advisers first reported a position in COST in Q2 2013 and has held it in 39 quarters since. The position peaked at $90.6M in Q3 2020. 4,239 funds tracked by Wall St. Rank hold COST as of Q1 2026.

  • Parallax Volatility Advisers held 3,212 shares of Costco worth $3.23M as of Q1 2026.
  • Parallax Volatility Advisers bought 3,210 Costco shares in Q1 2026, an estimated $3.13M.
  • Costco made up 0.01% of Parallax Volatility Advisers's portfolio in Q1 2026, its #686 holding.
  • Parallax Volatility Advisers first reported a position in Costco in Q2 2013 and has held it in 39 quarters since.
  • Parallax Volatility Advisers's Costco position peaked at $90.6M in Q3 2020.
  • 4,239 funds tracked by Wall St. Rank held Costco as of Q1 2026.

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