Mariner
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Mariner’s FerroAtlántica GSM Stock Holding History

Mariner’s Portfolio GSM Stock Details GSM Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q1 		– Sell
-12,330
Closed -$57.2K – 3670
2025
Q4 		$57.2K Buy
12,330
+894
+8% +$4.13K ﹤0.01% 3407
2025
Q3 		$52K Buy
+11,436
New +$49K ﹤0.01% 3443
2024
Q3 		– Sell
-10,939
Closed -$58.6K – 3332
2024
Q2 		$58.6K Buy
+10,939
New +$59.5K ﹤0.01% 3030
2023
Q4 		– Sell
-10,859
Closed -$56.5K – 3104
2023
Q3 		$56.5K Buy
+10,859
New +$56.4K ﹤0.01% 2757

Other funds holding GSM

CCPM
Cooper Creek Partners Management New York $4.21B AUM 44.81% 1-Year Est. Return
HP
Hosking Partners London, United Kingdom $3.01B AUM 83.99% 1-Year Est. Return
BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
Barrow, Hanley, Mewhinney & Strauss
Barrow, Hanley, Mewhinney & Strauss Dallas, Texas $33B AUM 40.62% 1-Year Est. Return
DSC
Donald Smith & Co New York $5.65B AUM 47.79% 1-Year Est. Return
OWIM
Old West Investment Management Los Angeles, California $944M AUM 90.26% 1-Year Est. Return
GC
Grizzlyrock Capital Chicago, Illinois $143M AUM 6.82% 1-Year Est. Return
Renaissance Technologies
Renaissance Technologies New York $72.6B AUM 54.88% 1-Year Est. Return
RA
Royce & Associates New York $12.4B AUM 64.17% 1-Year Est. Return
Ameriprise
Ameriprise Minneapolis, Minnesota $495B AUM 43.24% 1-Year Est. Return

Mariner's GSM Position: Q1 2026 in Review

Mariner sold out of FerroAtlántica (GSM) in Q1 2026, closing a stake of 12,330 shares — an estimated $57.2K sold.

Mariner first reported a position in GSM in Q3 2023 and held it in 4 quarters. The position peaked at $58.6K in Q2 2024. 173 funds tracked by Wall St. Rank hold GSM as of Q1 2026.

  • Mariner reported no remaining FerroAtlántica position as of Q1 2026 after selling out during the quarter.
  • Mariner sold 12,330 FerroAtlántica shares in Q1 2026, an estimated $57.2K.
  • Mariner first reported a position in FerroAtlántica in Q3 2023 and held it in 4 quarters.
  • Mariner's FerroAtlántica position peaked at $58.6K in Q2 2024.
  • 173 funds tracked by Wall St. Rank held FerroAtlántica as of Q1 2026.

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