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
2025
Q1 		– Sell
-4,800
Closed -$795K – 9230
2024
Q4 		$795K Sell
4,800
-32,500
-87% -$5.57M ﹤0.01% 3074
2024
Q3 		$6.61M Buy
37,300
+13,500
+57% +$2.45M ﹤0.01% 1298
2024
Q2 		$4.47M Buy
23,800
+18,700
+367% +$3.48M ﹤0.01% 1513
2024
Q1 		$987K Buy
5,100
+800
+19% +$141K ﹤0.01% 3135
2023
Q4 		$725K Buy
4,300
+3,900
+975% +$634K ﹤0.01% 3335
2023
Q3 		$63K Buy
400
+200
+100% +$34.4K ﹤0.01% 5580
2023
Q2 		$34K Buy
200
+100
+100% +$14.3K ﹤0.01% 6230
2023
Q1 		$13K Hold
100
– – ﹤0.01% 7315
2022
Q4 		$14K Hold
100
– – ﹤0.01% 7220
2022
Q3 		$10K Buy
+100
New +$12.3K ﹤0.01% 8248
2021
Q2 		– Sell
-1
Closed -$15K – 10454
2021
Q1 		$15K Hold
1
– – ﹤0.01% 7668
2020
Q4 		$14K Sell
1
-3
-75% -$433 ﹤0.01% 7204
2020
Q3 		$53K Buy
+4
New +$490 ﹤0.01% 5554
2020
Q2 		– Sell
-6
Closed -$60K – 8062
2020
Q1 		$60K Buy
+6
New +$755 ﹤0.01% 4945
2019
Q4 		– Sell
-2
Closed -$21K – 7708
2019
Q3 		$21K Buy
+2
New +$211 ﹤0.01% 5776
2018
Q4 		– Sell
-5
Closed -$53K – 7522
2018
Q3 		$53K Buy
5
+4
+400% +$404 ﹤0.01% 5111
2018
Q2 		$9K Buy
+1
New +$90 ﹤0.01% 6403
2018
Q1 		– Sell
-22
Closed -$2K – 6589
2017
Q4 		$2K Buy
+22
New +$1.76K ﹤0.01% 5219
2017
Q1 		– Sell
-2
Closed -$1K – 6546
2016
Q4 		$1K Buy
+2
New +$124 ﹤0.01% 5442
2016
Q3 		– Sell
-5
Closed -$1K – 6215
2016
Q2 		$1K Buy
+5
New +$248 ﹤0.01% 5349

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.