Nan Shan Life Insurance’s Costco COST Stock Holding History

Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake
Trade Value Portfolio Weight Portfolio Position
2026
Q1
$131M Buy
131,842
+31,336
+31% +$30.5M 4.76% 2
2025
Q4
$86.7M Hold
100,506
2.67% 9
2025
Q3
$93M Buy
100,506
+4,071
+4% +$3.9M 1.98% 15
2025
Q2
$95.5M Buy
96,435
+22,067
+30% +$21.9M 2.12% 12
2025
Q1
$70.3M Sell
74,368
-44,038
-37% -$42.9M 1.66% 14
2024
Q4
$108M Buy
118,406
+56,508
+91% +$52.4M 2.61% 6
2024
Q3
$54.9M Buy
61,898
+4,848
+8% +$4.21M 1.29% 23
2024
Q2
$48.5M Buy
57,050
+55,353
+3,262% +$43.2M 1.15% 24
2024
Q1
$1.24M Sell
1,697
-5,500
-76% -$3.93M 0.03% 103
2023
Q4
$4.75M Sell
7,197
-20,745
-74% -$12.3M 0.11% 85
2023
Q3
$15.8M Sell
27,942
-74,706
-73% -$41.2M 0.43% 62
2023
Q2
$55.3M Hold
102,648
1.33% 24
2023
Q1
$51M Hold
102,648
1.21% 26
2022
Q4
$46.9M Hold
102,648
1.28% 23
2022
Q3
$48.5M Buy
102,648
+30,093
+41% +$15.7M 1.19% 26
2022
Q2
$34.8M Buy
+72,555
New +$36.8M 0.73% 46
2021
Q3
Sell
-6,000
Closed -$2.37M 104
2021
Q2
$2.37M Sell
6,000
-7,500
-56% -$2.84M 0.04% 105
2021
Q1
$4.76M Sell
13,500
-35,493
-72% -$12.4M 0.09% 109
2020
Q4
$18.5M Sell
48,993
-9,342
-16% -$3.49M 0.38% 76
2020
Q3
$20.7M Hold
58,335
0.54% 53
2020
Q2
$17.7M Sell
58,335
-25,643
-31% -$7.8M 0.54% 52
2020
Q1
$23.9M Sell
83,978
-658
-0.8% -$200K 0.88% 38
2019
Q4
$24.9M Buy
84,636
+69,836
+472% +$20.8M 0.77% 37
2019
Q3
$4.26M Buy
+14,800
New +$4.16M 0.12% 74
2017
Q2
Sell
-140,000
Closed -$23.5M 73
2017
Q1
$23.5M Hold
140,000
0.59% 38
2016
Q4
$22.4M Buy
+140,000
New +$21.4M 0.85% 29
2016
Q2
Sell
-53,963
Closed -$8.5M 65
2016
Q1
$8.5M Buy
53,963
+51,900
+2,516% +$7.87M 0.37% 48
2015
Q4
$333K Buy
+2,063
New +$326K 0.02% 56

Other funds holding COST

Nan Shan Life Insurance's COST Position: Q1 2026 in Review

Nan Shan Life Insurance increased its Costco (COST) stake by 31% in Q1 2026, buying an estimated $30.5M and bringing the position to 131,842 shares worth $131M. The position accounts for 4.76% of the portfolio, ranked #2.

Nan Shan Life Insurance first reported a position in COST in Q4 2015 and has held it in 28 quarters since. 4,238 funds tracked by Wall St. Rank hold COST as of Q1 2026.

  • Nan Shan Life Insurance held 131,842 shares of Costco worth $131M as of Q1 2026.
  • Nan Shan Life Insurance bought 31,336 Costco shares in Q1 2026, an estimated $30.5M.
  • Costco made up 4.76% of Nan Shan Life Insurance's portfolio in Q1 2026, its #2 holding.
  • Nan Shan Life Insurance first reported a position in Costco in Q4 2015 and has held it in 28 quarters since.
  • 4,238 funds tracked by Wall St. Rank held Costco as of Q1 2026.

Based on Nan Shan Life Insurance's 13F filing for Q1 2026, filed 14 May 2026.