MAM
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Martingale Asset Management’s Mine Safety MSA Stock Holding History

Quarter Market Value Status Shares Shares
Change %
Trade Value Portfolio Weight Portfolio Position
2025
Q2
$668K Sell
3,987
-59,631
-94% -$9.99M 0.02% 564
2025
Q1
$9.33M Buy
63,618
+29,375
+86% +$4.31M 0.24% 117
2024
Q4
$5.68M Buy
34,243
+5,733
+20% +$950K 0.14% 147
2024
Q3
$5.06M Sell
28,510
-2,968
-9% -$526K 0.12% 160
2024
Q2
$5.91M Buy
31,478
+27,086
+617% +$5.08M 0.13% 151
2024
Q1
$850K Buy
4,392
+852
+24% +$165K 0.02% 511
2023
Q4
$598K Sell
3,540
-590
-14% -$99.6K 0.01% 567
2023
Q3
$651K Sell
4,130
-4,904
-54% -$773K 0.01% 554
2023
Q2
$1.57M Hold
9,034
0.03% 328
2023
Q1
$1.21M Sell
9,034
-3
-0% -$401 0.02% 394
2022
Q4
$1.3M Hold
9,037
0.03% 383
2022
Q3
$989K Sell
9,037
-1
-0% -$109 0.02% 443
2022
Q2
$1.1M Sell
9,038
-16,654
-65% -$2.02M 0.02% 439
2022
Q1
$3.41M Sell
25,692
-21,818
-46% -$2.9M 0.05% 201
2021
Q4
$7.17M Sell
47,510
-17,202
-27% -$2.6M 0.09% 174
2021
Q3
$9.43M Buy
64,712
+12,753
+25% +$1.86M 0.12% 159
2021
Q2
$8.61M Buy
51,959
+3,250
+7% +$538K 0.1% 169
2021
Q1
$7.31M Buy
48,709
+17,802
+58% +$2.67M 0.08% 180
2020
Q4
$4.62M Sell
30,907
-6,901
-18% -$1.03M 0.05% 228
2020
Q3
$5.07M Sell
37,808
-47,703
-56% -$6.4M 0.06% 218
2020
Q2
$9.79M Buy
85,511
+1
+0% +$114 0.12% 181
2020
Q1
$8.65M Sell
85,510
-4,300
-5% -$435K 0.11% 187
2019
Q4
$11.3M Sell
89,810
-803
-0.9% -$101K 0.12% 197
2019
Q3
$9.89M Buy
90,613
+3,000
+3% +$327K 0.1% 212
2019
Q2
$9.24M Sell
87,613
-5
-0% -$527 0.1% 231
2019
Q1
$9.06M Buy
87,618
+13,400
+18% +$1.39M 0.1% 226
2018
Q4
$7M Buy
74,218
+7,201
+11% +$679K 0.09% 228
2018
Q3
$7.13M Sell
67,017
-5
-0% -$532 0.08% 236
2018
Q2
$6.46M Sell
67,022
-201
-0.3% -$19.4K 0.08% 245
2018
Q1
$5.6M Sell
67,223
-3,700
-5% -$308K 0.07% 262
2017
Q4
$5.5M Sell
70,923
-9,795
-12% -$759K 0.07% 268
2017
Q3
$6.42M Buy
80,718
+4
+0% +$318 0.09% 240
2017
Q2
$6.55M Sell
80,714
-993
-1% -$80.6K 0.09% 226
2017
Q1
$5.78M Sell
81,707
-3,713
-4% -$262K 0.08% 254
2016
Q4
$5.92M Buy
85,420
+4,827
+6% +$335K 0.08% 265
2016
Q3
$4.68M Buy
80,593
+62,700
+350% +$3.64M 0.07% 292
2016
Q2
$940K Buy
17,893
+283
+2% +$14.9K 0.02% 525
2016
Q1
$852K Sell
17,610
-26,261
-60% -$1.27M 0.02% 549
2015
Q4
$1.91M Buy
43,871
+1,229
+3% +$53.5K 0.04% 316
2015
Q3
$1.71M Buy
42,642
+24,017
+129% +$960K 0.04% 336
2015
Q2
$904K Hold
18,625
0.02% 550
2015
Q1
$930K Sell
18,625
-1,296
-7% -$64.7K 0.02% 552
2014
Q4
$1.06M Sell
19,921
-200
-1% -$10.6K 0.03% 507
2014
Q3
$994K Sell
20,121
-200
-1% -$9.88K 0.03% 489
2014
Q2
$1.17M Sell
20,321
-1,200
-6% -$69K 0.04% 468
2014
Q1
$1.23M Hold
21,521
0.04% 425
2013
Q4
$1.1M Buy
21,521
+2,699
+14% +$138K 0.04% 498
2013
Q3
$972K Hold
18,822
0.03% 529
2013
Q2
$877K Buy
+18,822
New +$877K 0.03% 549