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Mairs & Power Inc’s Costco COST Stock Holding History

Mairs & Power Inc’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 		$2.95M Buy
2,963
+30
+1% +$29.2K 0.03% 119
2025
Q4 		$2.53M Sell
2,933
-288
-9% -$261K 0.02% 114
2025
Q3 		$2.98M Buy
3,221
+33
+1% +$31.6K 0.03% 111
2025
Q2 		$3.16M Buy
3,188
+488
+18% +$485K 0.03% 110
2025
Q1 		$2.55M Sell
2,700
-39
-1% -$38K 0.03% 110
2024
Q4 		$2.51M Sell
2,739
-358
-12% -$332K 0.02% 106
2024
Q3 		$2.75M Sell
3,097
-637
-17% -$553K 0.03% 107
2024
Q2 		$3.17M Sell
3,734
-845
-18% -$659K 0.03% 101
2024
Q1 		$3.35M Sell
4,579
-357
-7% -$255K 0.03% 102
2023
Q4 		$3.26M Buy
4,936
+1,486
+43% +$881K 0.03% 103
2023
Q3 		$1.95M Sell
3,450
-175
-5% -$96.6K 0.02% 115
2023
Q2 		$1.95M Buy
3,625
+21
+0.6% +$10.6K 0.02% 119
2023
Q1 		$1.79M Buy
3,604
+473
+15% +$232K 0.02% 121
2022
Q4 		$1.43M Hold
3,131
– – 0.02% 128
2022
Q3 		$1.48M Sell
3,131
-45
-1% -$23.4K 0.02% 126
2022
Q2 		$1.52M Sell
3,176
-2
-0.1% -$1.01K 0.02% 120
2022
Q1 		$1.83M Buy
3,178
+4
+0.1% +$2.1K 0.02% 123
2021
Q4 		$1.8M Buy
3,174
+518
+20% +$265K 0.02% 122
2021
Q3 		$1.19M Sell
2,656
-581
-18% -$255K 0.01% 129
2021
Q2 		$1.28M Sell
3,237
-81
-2% -$30.6K 0.01% 131
2021
Q1 		$1.17M Sell
3,318
-114
-3% -$39.7K 0.01% 133
2020
Q4 		$1.29M Buy
3,432
+80
+2% +$29.9K 0.01% 131
2020
Q3 		$1.19M Sell
3,352
-141
-4% -$47.4K 0.01% 128
2020
Q2 		$1.06M Hold
3,493
– – 0.01% 131
2020
Q1 		$996K Hold
3,493
– – 0.01% 129
2019
Q4 		$1.03M Buy
3,493
+40
+1% +$11.9K 0.01% 139
2019
Q3 		$995K Buy
3,453
+31
+0.9% +$8.72K 0.01% 134
2019
Q2 		$904K Sell
3,422
-31
-0.9% -$7.73K 0.01% 137
2019
Q1 		$836K Sell
3,453
-69
-2% -$15.1K 0.01% 138
2018
Q4 		$717K Hold
3,522
– – 0.01% 137
2018
Q3 		$827K Sell
3,522
-150
-4% -$33.8K 0.01% 135
2018
Q2 		$767K Buy
3,672
+200
+6% +$39.5K 0.01% 133
2018
Q1 		$654K Buy
3,472
+596
+21% +$112K 0.01% 139
2017
Q4 		$535K Sell
2,876
-126
-4% -$21.8K 0.01% 148
2017
Q3 		$493K Sell
3,002
-54
-2% -$8.48K 0.01% 148
2017
Q2 		$489K Sell
3,056
-46
-1% -$7.93K 0.01% 145
2017
Q1 		$520K Sell
3,102
-163
-5% -$27.3K 0.01% 142
2016
Q4 		$523K Buy
3,265
+26
+0.8% +$3.97K 0.01% 138
2016
Q3 		$494K Buy
3,239
+341
+12% +$55.1K 0.01% 142
2016
Q2 		$455K Hold
2,898
– – 0.01% 136
2016
Q1 		$457K Hold
2,898
– – 0.01% 134
2015
Q4 		$468K Sell
2,898
-240
-8% -$37.9K 0.01% 133
2015
Q3 		$454K Buy
3,138
+340
+12% +$48.5K 0.01% 132
2015
Q2 		$378K Buy
2,798
+157
+6% +$22.6K 0.01% 144
2015
Q1 		$400K Hold
2,641
– – 0.01% 150
2014
Q4 		$374K Buy
2,641
+450
+21% +$61.2K 0.01% 155
2014
Q3 		$275K Sell
2,191
-75
-3% -$9.06K ﹤0.01% 167
2014
Q2 		$261K Sell
2,266
-248
-10% -$28.5K ﹤0.01% 174
2014
Q1 		$281K Buy
2,514
+545
+28% +$62.3K ﹤0.01% 173
2013
Q4 		$234K Sell
1,969
-200
-9% -$23.9K ﹤0.01% 198
2013
Q3 		$250K Buy
2,169
+203
+10% +$23.4K ﹤0.01% 164
2013
Q2 		$217K Buy
+1,966
New +$215K ﹤0.01% 168

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 $147M AUM 25.76% 1-Year Est. Return
Fidelity Investments
Fidelity Investments Boston, Massachusetts $1.9T AUM 41.92% 1-Year Est. Return

Mairs & Power Inc's COST Position: Q1 2026 in Review

Mairs & Power Inc increased its Costco (COST) stake by 1% in Q1 2026, buying an estimated $29.2K and bringing the position to 2,963 shares worth $2.95M. The position accounts for 0.03% of the portfolio, ranked #119.

Mairs & Power Inc first reported a position in COST in Q2 2013 and has held it in 52 quarters since. The position peaked at $3.35M in Q1 2024. 4,239 funds tracked by Wall St. Rank hold COST as of Q1 2026.

  • Mairs & Power Inc held 2,963 shares of Costco worth $2.95M as of Q1 2026.
  • Mairs & Power Inc bought 30 Costco shares in Q1 2026, an estimated $29.2K.
  • Costco made up 0.03% of Mairs & Power Inc's portfolio in Q1 2026, its #119 holding.
  • Mairs & Power Inc first reported a position in Costco in Q2 2013 and has held it in 52 quarters since.
  • Mairs & Power Inc's Costco position peaked at $3.35M in Q1 2024.
  • 4,239 funds tracked by Wall St. Rank held Costco as of Q1 2026.

Based on Mairs & Power Inc's 13F filing for Q1 2026, filed 14 May 2026.