ACI — ARCH COAL INC COM

Ownership history in Magnetar Financial LLC  ·  21 quarters on record

This page tracks every 13F SEC filing in which Magnetar Financial LLC reported a position in ARCH COAL INC COM (ACI). Data includes quarterly share count, position size as % of portfolio, estimated market value, and end-of-quarter stock price — sourced directly from SEC EDGAR 13F filings.

Peak position
2.71% (2023 Q3)
Avg. % of fund
1.01%
First filed
2007 Q4
Last filed
2025 Q3
Quarters held
21
Quarter Action Shares Change Chg % % of Fund Mkt Value Price (EOQ)
2025 Q3 REDUCED 234,645 -3,817,757 -94.2% 0.02% $4.1M $17.22
2024 Q3 ADDED 4,052,402 +133,021 +3.4% 1.62% $74.9M $17.67
2024 Q2 REDUCED 3,919,381 -15,375 -0.4% 1.61% $77.4M $18.77
2024 Q1 UNCHANGED 3,934,756 — 0% 1.89% $84.4M $20.26
17 older quarters hidden  —  Sign in free or upgrade to Premium to see full history
% of Fund (quarterly)    ACI price (monthly, adj. close)

Other funds also holding ACI

As of 2025 Q4 — sorted by position size

Cerberus Capital Management, L.P. 3Y 98.7% BCK CAPITAL MANAGEMENT LP 3Y 21.0% Kite Lake Capital Management (UK) LLP 3Y 14.38% Trium Capital LLP 3Y 8.63% TOWERVIEW LLC 3Y 7Y 7.84% AMERICAN FINANCIAL GROUP INC 3Y 7Y 4.9% SOUTHEASTERN ASSET MANAGEMENT INC/TN/ 3Y 7Y 4.72% Parsifal Capital Management, LP 3Y 3.48% SOUND SHORE MANAGEMENT INC /CT/ 3Y 7Y 2.48% Savoir Faire Capital Management, L.P. 2.05%
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