Cornerstone Planning Group
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Cornerstone Planning Group’s Amkor Technology AMKR Stock Holding History

Cornerstone Planning Group’s Portfolio AMKR Stock Details AMKR Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q3 		– Sell
-25
Closed -$1.67K – 246
2026
Q2 		$1.67K Hold
25
– – ﹤0.01% 1371
2026
Q1 		$1.92K Hold
25
– – ﹤0.01% 1313
2025
Q4 		$1.27K Hold
25
– – ﹤0.01% 1296
2025
Q3 		$798 Hold
25
– – ﹤0.01% 1368
2025
Q2 		$554 Sell
25
-113
-82% -$2.08K ﹤0.01% 1269
2025
Q1 		$2.26K Buy
138
+124
+886% +$2.8K ﹤0.01% 958
2024
Q4 		$332 Buy
+14
New +$385 ﹤0.01% 1266

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Cornerstone Planning Group's AMKR Position: Q3 2026 in Review

Cornerstone Planning Group sold out of Amkor Technology (AMKR) in Q3 2026, closing a stake of 25 shares — an estimated $1.67K sold.

Cornerstone Planning Group first reported a position in AMKR in Q4 2024 and held it in 7 quarters. The position peaked at $2.26K in Q1 2025. 111 funds tracked by Wall St. Rank hold AMKR as of Q3 2026.

  • Cornerstone Planning Group reported no remaining Amkor Technology position as of Q3 2026 after selling out during the quarter.
  • Cornerstone Planning Group sold 25 Amkor Technology shares in Q3 2026, an estimated $1.67K.
  • Cornerstone Planning Group first reported a position in Amkor Technology in Q4 2024 and held it in 7 quarters.
  • Cornerstone Planning Group's Amkor Technology position peaked at $2.26K in Q1 2025.
  • 111 funds tracked by Wall St. Rank held Amkor Technology as of Q3 2026.

Based on Cornerstone Planning Group's 13F filing for Q3 2026, filed 16 Oct 2026.