Old Second National Bank of Aurora’s Costco COST Stock Holding History

Old Second National Bank of Aurora’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 Q2	$2.48M	Sell	2,648 -69	-3%	-$68.7K	0.47%	56
2026 Q1	$2.71M	Sell	2,717 -1	-0%	-$975	0.56%	50
2025 Q4	$2.34M	Buy	2,718 +84	+3%	+$76.1K	0.47%	57
2025 Q3	$2.44M	Sell	2,634 -32	-1%	-$30.7K	0.5%	55
2025 Q2	$2.64M	Sell	2,666 -110	-4%	-$109K	0.58%	49
2025 Q1	$2.63M	Sell	2,776 -1,259	-31%	-$1.23M	0.62%	48
2024 Q4	$3.7M	Sell	4,035 -56	-1%	-$52K	0.84%	35
2024 Q3	$3.63M	Sell	4,091 -91	-2%	-$79K	0.88%	32
2024 Q2	$3.55M	Sell	4,182 -133	-3%	-$104K	0.91%	30
2024 Q1	$3.16M	Sell	4,315 -168	-4%	-$120K	0.82%	38
2023 Q4	$2.96M	Sell	4,483 -67	-1%	-$39.7K	0.81%	40
2023 Q3	$2.57M	Sell	4,550 -102	-2%	-$56.3K	0.78%	42
2023 Q2	$2.5M	Sell	4,652 -90	-2%	-$45.5K	0.72%	47
2023 Q1	$2.36M	Sell	4,742 -128	-3%	-$62.8K	0.69%	54
2022 Q4	$2.22M	Buy	4,870 +281	+6%	+$137K	0.66%	56
2022 Q3	$2.17M	Sell	4,589 -276	-6%	-$144K	0.67%	57
2022 Q2	$2.33M	Sell	4,865 -39	-0.8%	-$19.8K	0.65%	55
2022 Q1	$2.82M	Buy	4,904 +4,312	+728%	+$2.26M	0.71%	53
2021 Q4	$209K	Sell	592 -4,230	-88%	-$2.17M	0.06%	114
2021 Q3	$2.17M	Sell	4,822 -91	-2%	-$40K	0.58%	65
2021 Q2	$1.94M	Buy	4,913 +842	+21%	+$318K	0.53%	63
2021 Q1	$1.44M	Buy	4,071 +3,479	+588%	+$1.21M	0.4%	69
2020 Q4	$223K	Hold	592	–	–	0.07%	112
2020 Q3	$210K	Hold	592	–	–	0.07%	113
2020 Q2	$180K	Sell	592 -16	-3%	-$4.87K	0.06%	118
2020 Q1	$173K	Hold	608	–	–	0.07%	117
2019 Q4	$179K	Hold	608	–	–	0.05%	127
2019 Q3	$175K	Hold	608	–	–	0.06%	123
2019 Q2	$161K	Hold	608	–	–	0.06%	134
2019 Q1	$147K	Hold	608	–	–	0.05%	143
2018 Q4	$124K	Hold	608	–	–	0.05%	149
2018 Q3	$143K	Hold	608	–	–	0.05%	148
2018 Q2	$127K	Hold	608	–	–	0.05%	146
2018 Q1	$115K	Hold	608	–	–	0.05%	143
2017 Q4	$113K	Hold	608	–	–	0.04%	145
2017 Q3	$100K	Hold	608	–	–	0.04%	145
2017 Q2	$97K	Hold	608	–	–	0.04%	146
2017 Q1	$102K	Hold	608	–	–	0.05%	141
2016 Q4	$97K	Hold	608	–	–	0.04%	146
2016 Q3	$93K	Hold	608	–	–	0.04%	136
2016 Q2	$95K	Buy	608 +108	+22%	+$16.4K	0.04%	135
2016 Q1	$79K	Hold	500	–	–	0.04%	143
2015 Q4	$81K	Hold	500	–	–	0.04%	141
2015 Q3	$72K	Hold	500	–	–	0.04%	141
2015 Q2	$68K	Hold	500	–	–	0.03%	145
2015 Q1	$76K	Hold	500	–	–	0.03%	142
2014 Q4	$71K	Hold	500	–	–	0.03%	139
2014 Q3	$63K	Hold	500	–	–	0.03%	118
2014 Q2	$58K	Hold	500	–	–	0.03%	119
2014 Q1	$56K	Hold	500	–	–	0.03%	121
2013 Q4	$60K	Hold	500	–	–	0.02%	120
2013 Q3	$58K	Hold	500	–	–	0.03%	119
2013 Q2	$55K	Buy	+500	New	+$54.7K	0.03%	118

Other funds holding COST

Jennison Associates New York $167B AUM 44.17% 1-Year Est. Return

Sumitomo Mitsui Trust Group Minato-Ku, Tokyo, Japan $175B AUM 40.63% 1-Year Est. Return

Citigroup New York $303B AUM 53.02% 1-Year Est. Return

EHC

Everett Harris & Co Los Angeles, California $8.14B AUM 14.79% 1-Year Est. Return

Assenagon Asset Management Senningerberg, Luxembourg $80.2B AUM 50.57% 1-Year Est. Return

Swedbank Stockholm, Sweden $116B AUM 46.87% 1-Year Est. Return

Parnassus Investments San Francisco, California $37.4B AUM 35.42% 1-Year Est. Return

Emerald Advisors Bellevue, Washington $796M AUM 2.51% 1-Year Est. Return

Envestnet Asset Management Chicago, Illinois $424B AUM 22.94% 1-Year Est. Return

New York State Common Retirement Fund Albany, New York $79.3B AUM 43.63% 1-Year Est. Return

Old Second National Bank of Aurora's COST Position: Q2 2026 in Review

Old Second National Bank of Aurora reduced its Costco (COST) stake by 2.5% in Q2 2026, selling an estimated $68.7K and leaving 2,648 shares worth $2.48M. The position accounts for 0.47% of the portfolio, ranked #56.

Old Second National Bank of Aurora first reported a position in COST in Q2 2013 and has held it in 53 quarters since. The position peaked at $3.7M in Q4 2024. 2,180 funds tracked by Wall St. Rank hold COST as of Q2 2026.

Old Second National Bank of Aurora held 2,648 shares of Costco worth $2.48M as of Q2 2026.
Old Second National Bank of Aurora sold 69 Costco shares in Q2 2026, an estimated $68.7K.
Costco made up 0.47% of Old Second National Bank of Aurora's portfolio in Q2 2026, its #56 holding.
Old Second National Bank of Aurora first reported a position in Costco in Q2 2013 and has held it in 53 quarters since.
Old Second National Bank of Aurora's Costco position peaked at $3.7M in Q4 2024.
2,180 funds tracked by Wall St. Rank held Costco as of Q2 2026.

Based on Old Second National Bank of Aurora's 13F filing for Q2 2026, filed 21 Jul 2026.