BFO
COST icon

Boston Family Office’s Costco COST Stock Holding History

Boston Family Office’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 		$12.9M Sell
12,948
-588
-4% -$573K 0.86% 39
2025
Q4 		$11.7M Buy
13,536
+877
+7% +$795K 0.74% 40
2025
Q3 		$11.7M Sell
12,659
-22
-0.2% -$21.1K 0.75% 43
2025
Q2 		$12.6M Buy
12,681
+292
+2% +$290K 0.83% 38
2025
Q1 		$11.7M Sell
12,389
-98
-0.8% -$95.5K 0.83% 35
2024
Q4 		$11.4M Sell
12,487
-362
-3% -$336K 0.79% 36
2024
Q3 		$11.4M Sell
12,849
-74
-0.6% -$64.2K 0.77% 39
2024
Q2 		$11M Sell
12,923
-179
-1% -$140K 0.79% 37
2024
Q1 		$9.6M Sell
13,102
-516
-4% -$368K 0.69% 44
2023
Q4 		$8.99M Sell
13,618
-630
-4% -$373K 0.68% 41
2023
Q3 		$8.05M Buy
14,248
+321
+2% +$177K 0.66% 45
2023
Q2 		$7.5M Buy
13,927
+203
+1% +$103K 0.57% 53
2023
Q1 		$6.82M Buy
13,724
+3,742
+37% +$1.84M 0.55% 55
2022
Q4 		$4.56M Buy
9,982
+629
+7% +$307K 0.38% 68
2022
Q3 		$4.42M Buy
9,353
+187
+2% +$97.3K 0.39% 67
2022
Q2 		$4.39M Buy
9,166
+808
+10% +$410K 0.37% 69
2022
Q1 		$4.81M Buy
8,358
+82
+1% +$43K 0.34% 70
2021
Q4 		$4.7M Sell
8,276
-239
-3% -$122K 0.31% 74
2021
Q3 		$3.83M Buy
8,515
+1,127
+15% +$495K 0.28% 78
2021
Q2 		$2.92M Sell
7,388
-40
-0.5% -$15.1K 0.21% 100
2021
Q1 		$2.62M Buy
7,428
+20
+0.3% +$6.96K 0.2% 102
2020
Q4 		$2.79M Buy
7,408
+393
+6% +$147K 0.21% 98
2020
Q3 		$2.49M Buy
7,015
+720
+11% +$242K 0.23% 94
2020
Q2 		$1.91M Sell
6,295
-185
-3% -$56.3K 0.19% 104
2020
Q1 		$1.85M Buy
6,480
+1,070
+20% +$325K 0.22% 98
2019
Q4 		$1.59M Buy
5,410
+1,395
+35% +$415K 0.15% 123
2019
Q3 		$1.16M Buy
4,015
+150
+4% +$42.2K 0.12% 136
2019
Q2 		$1.02M Sell
3,865
-50
-1% -$12.5K 0.11% 144
2019
Q1 		$948K Buy
3,915
+170
+5% +$37.2K 0.1% 146
2018
Q4 		$763K Buy
3,745
+2,330
+165% +$520K 0.09% 154
2018
Q3 		$332K Sell
1,415
-10
-0.7% -$2.25K 0.04% 229
2018
Q2 		$298K Sell
1,425
-13
-0.9% -$2.57K 0.03% 230
2018
Q1 		$271K Sell
1,438
-18
-1% -$3.4K 0.03% 236
2017
Q4 		$271K Sell
1,456
-125
-8% -$21.6K 0.03% 235
2017
Q3 		$260K Buy
1,581
+18
+1% +$2.83K 0.03% 237
2017
Q2 		$250K Buy
1,563
+170
+12% +$29.3K 0.03% 233
2017
Q1 		$234K Hold
1,393
– – 0.03% 230
2016
Q4 		$223K Sell
1,393
-35
-2% -$5.34K 0.03% 232
2016
Q3 		$218K Hold
1,428
– – 0.03% 234
2016
Q2 		$224K Buy
1,428
+125
+10% +$18.9K 0.03% 234
2016
Q1 		$205K Buy
+1,303
New +$198K 0.03% 233
2015
Q2 		– Sell
-3,265
Closed -$495K – 257
2015
Q1 		$495K Sell
3,265
-60
-2% -$8.8K 0.06% 199
2014
Q4 		$471K Hold
3,325
– – 0.06% 200
2014
Q3 		$417K Hold
3,325
– – 0.05% 207
2014
Q2 		$383K Hold
3,325
– – 0.05% 219
2014
Q1 		$371K Sell
3,325
-1,575
-32% -$180K 0.05% 217
2013
Q4 		$583K Hold
4,900
– – 0.08% 180
2013
Q3 		$564K Hold
4,900
– – 0.08% 180
2013
Q2 		$542K Buy
+4,900
New +$536K 0.08% 176

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

Boston Family Office's COST Position: Q1 2026 in Review

Boston Family Office reduced its Costco (COST) stake by 4.3% in Q1 2026, selling an estimated $573K and leaving 12,948 shares worth $12.9M. The position accounts for 0.86% of the portfolio, ranked #39.

Boston Family Office first reported a position in COST in Q2 2013 and has held it in 49 quarters since. 4,239 funds tracked by Wall St. Rank hold COST as of Q1 2026.

  • Boston Family Office held 12,948 shares of Costco worth $12.9M as of Q1 2026.
  • Boston Family Office sold 588 Costco shares in Q1 2026, an estimated $573K.
  • Costco made up 0.86% of Boston Family Office's portfolio in Q1 2026, its #39 holding.
  • Boston Family Office first reported a position in Costco in Q2 2013 and has held it in 49 quarters since.
  • 4,239 funds tracked by Wall St. Rank held Costco as of Q1 2026.

Based on Boston Family Office's 13F filing for Q1 2026, filed 13 May 2026.