SEI Investments
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SEI Investments’s Astronics ATRO Stock Holding History

SEI Investments’s Portfolio ATRO Stock Details ATRO Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q2 		$3.8M Sell
46,733
-38,514
-45% -$2.63M ﹤0.01% 1638
2026
Q1 		$4.74M Buy
85,247
+51,609
+153% +$3.12M ﹤0.01% 1566
2025
Q4 		$1.52M Buy
33,638
+5,295
+19% +$222K ﹤0.01% 1993
2025
Q3 		$1.08M Sell
28,343
-10,095
-26% -$307K ﹤0.01% 1945
2025
Q2 		$1.07M Buy
38,438
+18,100
+89% +$423K ﹤0.01% 1899
2025
Q1 		$410K Buy
+20,338
New +$342K ﹤0.01% 2214
2018
Q3 		– Sell
-41,629
Closed -$1.08M – 2544
2018
Q2 		$1.08M Buy
41,629
+41,063
+7,255% +$1.09M ﹤0.01% 1549
2018
Q1 		$15K Sell
566
-13,993
-96% -$418K ﹤0.01% 2737
2017
Q4 		$438K Sell
14,559
-186,691
-93% -$5.06M ﹤0.01% 1703
2017
Q3 		$8.95M Buy
201,250
+201,247
+6,708,233% +$4.11M 0.03% 633
2017
Q2 		$0 Hold
3
– – ﹤0.01% 3064
2017
Q1 		$0 Sell
3
-43,217
-100% -$1.02M ﹤0.01% 2907
2016
Q4 		$2.05M Buy
43,220
+42,504
+5,936% +$1.12M 0.01% 1134
2016
Q3 		$20K Buy
716
+402
+128% +$10.3K ﹤0.01% 2271
2016
Q2 		$7K Buy
314
+154
+96% +$3.54K ﹤0.01% 2312
2016
Q1 		$4K Sell
160
-2,221
-93% -$47K ﹤0.01% 2298
2015
Q4 		$61K Sell
2,381
-33,910
-93% -$813K ﹤0.01% 1836
2015
Q3 		$804K Buy
36,291
+4,834
+15% +$150K 0.01% 1105
2015
Q2 		$1.22M Sell
31,457
-2,463
-7% -$97.1K 0.01% 919
2015
Q1 		$1.37M Sell
33,920
-10,896
-24% -$371K 0.01% 865
2014
Q4 		$1.36M Buy
+44,816
New +$1.18M 0.01% 843

Other funds holding ATRO

BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
American Century Companies
American Century Companies Kansas City, Missouri $226B AUM 44.75% 1-Year Est. Return
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
Capital International Investors
Capital International Investors Los Angeles, California $484B AUM 34.9% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return
PP
Pertento Partners London, United Kingdom $1.86B AUM 53.86% 1-Year Est. Return
NCGI
Next Century Growth Investors Plymouth, Minnesota $1.89B AUM 151.53% 1-Year Est. Return
Ameriprise
Ameriprise Minneapolis, Minnesota $495B AUM 43.24% 1-Year Est. Return
Dimensional Fund Advisors
Dimensional Fund Advisors Austin, Texas $552B AUM 44.19% 1-Year Est. Return

SEI Investments's ATRO Position: Q2 2026 in Review

SEI Investments reduced its Astronics (ATRO) stake by 45% in Q2 2026, selling an estimated $2.63M and leaving 46,733 shares worth $3.8M. The position accounts for ﹤0.01% of the portfolio, ranked #1638.

SEI Investments first reported a position in ATRO in Q4 2014 and has held it in 21 quarters since. The position peaked at $8.95M in Q3 2017. 309 funds tracked by Wall St. Rank hold ATRO as of Q2 2026.

  • SEI Investments held 46,733 shares of Astronics worth $3.8M as of Q2 2026.
  • SEI Investments sold 38,514 Astronics shares in Q2 2026, an estimated $2.63M.
  • Astronics made up ﹤0.01% of SEI Investments's portfolio in Q2 2026, its #1638 holding.
  • SEI Investments first reported a position in Astronics in Q4 2014 and has held it in 21 quarters since.
  • SEI Investments's Astronics position peaked at $8.95M in Q3 2017.
  • 309 funds tracked by Wall St. Rank held Astronics as of Q2 2026.

Based on SEI Investments's 13F filing for Q2 2026, filed 14 Aug 2026.