Mariner
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Mariner’s Mine Safety MSA Stock Holding History

Mariner’s Portfolio MSA Stock Details MSA Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q1 		$550K Buy
+3,357
New +$614K ﹤0.01% 2427
2025
Q3 		– Sell
-2,201
Closed -$369K – 3689
2025
Q2 		$369K Sell
2,201
-142
-6% -$22.2K ﹤0.01% 2558
2025
Q1 		$344K Sell
2,343
-288
-11% -$45.9K ﹤0.01% 2499
2024
Q4 		$436K Buy
2,631
+471
+22% +$80.7K ﹤0.01% 2297
2024
Q3 		$383K Sell
2,160
-22
-1% -$4K ﹤0.01% 2364
2024
Q2 		$410K Buy
2,182
+48
+2% +$8.92K ﹤0.01% 2204
2024
Q1 		$413K Buy
2,134
+458
+27% +$80.5K ﹤0.01% 2180
2023
Q4 		$283K Buy
1,676
+226
+16% +$36.8K ﹤0.01% 2401
2023
Q3 		$229K Sell
1,450
-211
-13% -$36.2K ﹤0.01% 2399
2023
Q2 		$289K Buy
+1,661
New +$238K ﹤0.01% 2150
2023
Q1 		– Sell
-1,656
Closed -$239K – 2845
2022
Q4 		$239K Buy
+1,656
New +$217K ﹤0.01% 2215

Other funds holding MSA

BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
VPM
Vanguard Portfolio Management Malvern, Pennsylvania $1.91T AUM
RCG
Ruane, Cunniff & Goldfarb New York $6.03B AUM 12.06% 1-Year Est. Return
VCM
Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM
State Street
State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return
APG Asset Management
APG Asset Management Amsterdam, Netherlands $31.6B AUM 19.33% 1-Year Est. Return
CB
Cooke & Bieler Philadelphia, Pennsylvania $8.84B AUM 6.92% 1-Year Est. Return
Dimensional Fund Advisors
Dimensional Fund Advisors Austin, Texas $481B AUM 30.42% 1-Year Est. Return
JP Morgan Chase
JP Morgan Chase New York $1.56T AUM 27.86% 1-Year Est. Return
MGP
M&G plc London, United Kingdom $19.4B AUM 16.7% 1-Year Est. Return

Mariner's MSA Position: Q1 2026 in Review

Mariner opened a new position in Mine Safety (MSA) in Q1 2026: 3,357 shares worth $550K. The stake represents ﹤0.01% of the portfolio and ranks #2427 among its holdings. This is a return to the name: Mariner previously reported a position in MSA as recently as Q2 2025.

Mariner first reported a position in MSA in Q4 2022 and has held it in 11 quarters since. 448 funds tracked by Wall St. Rank hold MSA as of Q1 2026.

  • Mariner held 3,357 shares of Mine Safety worth $550K as of Q1 2026.
  • Mine Safety was a new Mariner position in Q1 2026.
  • Mine Safety made up ﹤0.01% of Mariner's portfolio in Q1 2026, its #2427 holding.
  • Mariner first reported a position in Mine Safety in Q4 2022 and has held it in 11 quarters since.
  • 448 funds tracked by Wall St. Rank held Mine Safety as of Q1 2026.

Based on Mariner's 13F filing for Q1 2026, filed 13 May 2026.