MPM
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Mountaineer Partners Management’s ATI ATI Stock Holding History

Quarter Market Value Status Shares Shares
Change %
Trade Value Portfolio Weight Portfolio Position
2025
Q2
$10.6M Sell
122,970
-58,405
-32% -$5.04M 7.02% 8
2025
Q1
$9.44M Sell
181,375
-1,295
-0.7% -$67.4K 9.03% 4
2024
Q4
$10.1M Buy
182,670
+42,020
+30% +$2.31M 7.36% 3
2024
Q3
$9.41M Sell
140,650
-68,423
-33% -$4.58M 5.87% 10
2024
Q2
$11.6M Sell
209,073
-27,323
-12% -$1.52M 6.03% 4
2024
Q1
$12.1M Sell
236,396
-15,443
-6% -$790K 5.58% 7
2023
Q4
$11.5M Buy
251,839
+1,879
+0.8% +$85.4K 5.82% 8
2023
Q3
$10.3M Buy
249,960
+1,131
+0.5% +$46.5K 6.59% 6
2023
Q2
$11M Buy
+248,829
New +$11M 6.07% 5
2023
Q1
Sell
-195,589
Closed -$5.84M 14
2022
Q4
$5.84M Sell
195,589
-14,918
-7% -$445K 5.54% 8
2022
Q3
$5.6M Hold
210,507
7.08% 4
2022
Q2
$4.78M Hold
210,507
4.81% 6
2022
Q1
$5.65M Sell
210,507
-448,877
-68% -$12M 3.11% 12
2021
Q4
$10.5M Buy
659,384
+97,102
+17% +$1.55M 5.71% 11
2021
Q3
$9.35M Buy
562,282
+125,443
+29% +$2.09M 6.11% 11
2021
Q2
$9.11M Sell
436,839
-400
-0.1% -$8.34K 6.63% 11
2021
Q1
$9.21M Buy
437,239
+7,097
+2% +$149K 6.45% 9
2020
Q4
$7.21M Buy
430,142
+100,000
+30% +$1.68M 5.18% 15
2020
Q3
$2.88M Hold
330,142
2.49% 14
2020
Q2
$3.36M Sell
330,142
-8,291
-2% -$84.5K 4.52% 11
2020
Q1
$2.88M Buy
338,433
+22,900
+7% +$195K 4.09% 10
2019
Q4
$6.52M Sell
315,533
-50,400
-14% -$1.04M 7.26% 8
2019
Q3
$7.41M Sell
365,933
-120,000
-25% -$2.43M 7.46% 7
2019
Q2
$12.2M Buy
485,933
+48,800
+11% +$1.23M 5.65% 3
2019
Q1
$11.2M Sell
437,133
-34,500
-7% -$882K 9.54% 3
2018
Q4
$10.3M Buy
+471,633
New +$10.3M 8.73% 4