Mariner
KOP icon

Mariner’s Koppers KOP Stock Holding History

Mariner’s Portfolio KOP Stock Details KOP Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q2 		$451K Sell
10,033
-9,980
-50% -$408K ﹤0.01% 2529
2026
Q1 		$595K Sell
20,013
-4,003
-17% -$134K ﹤0.01% 2359
2025
Q4 		$527K Buy
24,016
+2,830
+13% +$79.1K ﹤0.01% 2410
2025
Q3 		$593K Sell
21,186
-1,402
-6% -$43.2K ﹤0.01% 2293
2025
Q2 		$726K Buy
22,588
+1,477
+7% +$42.4K ﹤0.01% 2039
2025
Q1 		$591K Buy
21,111
+1,219
+6% +$36.7K ﹤0.01% 2069
2024
Q4 		$645K Sell
19,892
-450
-2% -$16.1K ﹤0.01% 1981
2024
Q3 		$743K Sell
20,342
-717
-3% -$26.8K ﹤0.01% 1835
2024
Q2 		$779K Buy
21,059
+1,299
+7% +$60.6K ﹤0.01% 1694
2024
Q1 		$1.09M Buy
19,760
+1,836
+10% +$94.9K ﹤0.01% 1447
2023
Q4 		$918K Buy
17,924
+4,158
+30% +$174K ﹤0.01% 1492
2023
Q3 		$544K Sell
13,766
-9,176
-40% -$347K ﹤0.01% 1724
2023
Q2 		$782K Hold
22,942
– – ﹤0.01% 1451
2023
Q1 		$802K Buy
22,942
+3,234
+16% +$108K ﹤0.01% 1396
2022
Q4 		$556K Buy
19,708
+2
+0% +$54 ﹤0.01% 1597
2022
Q3 		$409K Buy
+19,706
New +$454K ﹤0.01% 1544

Other funds holding KOP

BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
SCM
Simcoe Capital Management New York $549M AUM 24.95% 1-Year Est. Return
Dimensional Fund Advisors
Dimensional Fund Advisors Austin, Texas $552B AUM 44.19% 1-Year Est. Return
Pzena Investment Management
Pzena Investment Management New York $34.1B AUM 23.81% 1-Year Est. Return
Fuller & Thaler Asset Management
Fuller & Thaler Asset Management San Mateo, California $36.7B AUM 74.15% 1-Year Est. Return
LSV Asset Management
LSV Asset Management Chicago, Illinois $55.1B AUM 45.38% 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
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
Vanguard Portfolio Management
Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM

Mariner's KOP Position: Q2 2026 in Review

Mariner reduced its Koppers (KOP) stake by 50% in Q2 2026, selling an estimated $408K and leaving 10,033 shares worth $451K. The position accounts for ﹤0.01% of the portfolio, ranked #2529.

Mariner first reported a position in KOP in Q3 2022 and has held it in 16 quarters since. The position peaked at $1.09M in Q1 2024. 216 funds tracked by Wall St. Rank hold KOP as of Q2 2026.

  • Mariner held 10,033 shares of Koppers worth $451K as of Q2 2026.
  • Mariner sold 9,980 Koppers shares in Q2 2026, an estimated $408K.
  • Koppers made up ﹤0.01% of Mariner's portfolio in Q2 2026, its #2529 holding.
  • Mariner first reported a position in Koppers in Q3 2022 and has held it in 16 quarters since.
  • Mariner's Koppers position peaked at $1.09M in Q1 2024.
  • 216 funds tracked by Wall St. Rank held Koppers as of Q2 2026.

Based on Mariner's 13F filing for Q2 2026, filed 13 Aug 2026.