Simplex Trading
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Simplex Trading’s Mine Safety MSA Stock Holding History

Simplex Trading’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
Q2 		$52.4K Buy
+300
New +$50.2K ﹤0.01% 6265
2025
Q1 		– Sell
-300
Closed -$49K – 9231
2024
Q4 		$49K Sell
300
-1,000
-77% -$171K ﹤0.01% 5888
2024
Q3 		$230K Hold
1,300
– – ﹤0.01% 4395
2024
Q2 		$243K Sell
1,300
-100
-7% -$18.6K ﹤0.01% 4467
2024
Q1 		$271K Sell
1,400
-500
-26% -$87.9K ﹤0.01% 4519
2023
Q4 		$320K Buy
+1,900
New +$309K ﹤0.01% 4155
2023
Q3 		– Sell
-200
Closed -$34K – 9393
2023
Q2 		$34K Buy
+200
New +$28.6K ﹤0.01% 6231
2022
Q3 		– Sell
-100
Closed -$1K – 10526
2022
Q2 		$1K Buy
+100
New +$12.4K ﹤0.01% 9621
2021
Q2 		– Sell
-1
Closed -$15K – 10455
2021
Q1 		$15K Sell
1
-27
-96% -$4.35K ﹤0.01% 7669
2020
Q4 		$418K Sell
28
-15
-35% -$2.17K ﹤0.01% 3659
2020
Q3 		$576K Sell
43
-47
-52% -$5.75K ﹤0.01% 2827
2020
Q2 		$1.03M Buy
90
+78
+650% +$8.67K ﹤0.01% 2126
2020
Q1 		$121K Buy
+12
New +$1.51K ﹤0.01% 4163
2019
Q3 		– Sell
-27
Closed -$284K – 7652
2019
Q2 		$284K Sell
27
-36
-57% -$3.78K ﹤0.01% 3125
2019
Q1 		$651K Buy
+63
New +$6.34K ﹤0.01% 2383
2015
Q4 		– Sell
-4
Closed -$2K – 5851
2015
Q3 		$2K Buy
+4
New +$186 ﹤0.01% 4665

Other funds holding MSA

BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
Vanguard Portfolio Management
Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM
RCG
Ruane, Cunniff & Goldfarb New York $6.43B AUM 18.44% 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
JP Morgan Chase
JP Morgan Chase New York $1.81T AUM 41.13% 1-Year Est. Return
Dimensional Fund Advisors
Dimensional Fund Advisors Austin, Texas $552B AUM 44.19% 1-Year Est. Return
CB
Cooke & Bieler Philadelphia, Pennsylvania $8.65B AUM 9.66% 1-Year Est. Return
FMI
Fiduciary Management Inc Milwaukee, Wisconsin $7.03B AUM 11.68% 1-Year Est. Return
MGP
M&G plc London, United Kingdom $20.1B AUM 16.62% 1-Year Est. Return

Simplex Trading's MSA Position: Q2 2026 in Review

Simplex Trading opened a new position in Mine Safety (MSA) in Q2 2026: 9 shares worth $1.57K. The stake represents ﹤0.01% of the portfolio and ranks #8731 among its holdings. This is a return to the name: Simplex Trading previously reported a position in MSA as recently as Q4 2023.

Simplex Trading first reported a position in MSA in Q3 2015 and has held it in 14 quarters since. The position peaked at $374K in Q1 2020. 458 funds tracked by Wall St. Rank hold MSA as of Q2 2026.

  • Simplex Trading held 9 shares of Mine Safety worth $1.57K as of Q2 2026.
  • Mine Safety was a new Simplex Trading position in Q2 2026.
  • Mine Safety made up ﹤0.01% of Simplex Trading's portfolio in Q2 2026, its #8731 holding.
  • Simplex Trading first reported a position in Mine Safety in Q3 2015 and has held it in 14 quarters since.
  • Simplex Trading's Mine Safety position peaked at $374K in Q1 2020.
  • 458 funds tracked by Wall St. Rank held Mine Safety as of Q2 2026.

Based on Simplex Trading's 13F filing for Q2 2026, filed 12 Aug 2026.