Maple Rock Capital Partners Inc. 13F holdings
Maple Rock Capital Partners Inc. reported 51 positions with a total reported value of $5.1B as of 2026-06-30, in its 13F for Q2 2026, filed 2026-08-14. Top holdings by reported value: WDC WESTERN DIGITAL CORP (17.0%), STX SEAGATE TECHNOLOGY HLDNGS PL (5.7%), UNH UNITEDHEALTH GROUP INC (5.6%), HUM HUMANA INC (4.9%), ICLR ICON PUB LTD CO (4.1%). Against 2026-03-31 it opened 11 new positions and exited 4. Next 13F due by 2026-11-14, the legal deadline 45 days after the quarter ending 2026-09-30.
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Top holdings
25 largest of 51 positions · reported value as of 2026-06-30
| Holding | Shares | Reported value | % of portfolio |
|---|---|---|---|
| WDC WESTERN DIGITAL CORP | 1,357,834 | $867.3M | 17.0% |
| STX SEAGATE TECHNOLOGY HLDNGS PL | 301,162 | $290.6M | 5.7% |
| UNH UNITEDHEALTH GROUP INC | 681,100 | $283.1M | 5.6% |
| HUM HUMANA INC | 628,251 | $249.6M | 4.9% |
| ICLR ICON PUB LTD CO | 1,199,600 | $208.4M | 4.1% |
| TFII TFI INTERNATIONAL INC | 1,418,409 | $203.6M | 4.0% |
| EQX EQUINOX GOLD CORP | 17,531,248 | $170.4M | 3.3% |
| AAP ADVANCE AUTO PARTS INC | 2,421,040 | $150.6M | 3.0% |
| BKD BROOKDALE SR LIVING INC | 8,888,148 | $143.0M | 2.8% |
| NUE NUCOR CORP | 614,000 | $136.8M | 2.7% |
| BRITISH AMERN TOB PLC | 2,166,000 | $133.8M | 2.6% |
| MT ARCELORMITTAL SA LUXEMBOURG | 2,190,860 | $131.9M | 2.6% |
| CVS CVS HEALTH CORP | 1,197,996 | $123.9M | 2.4% |
| SW SMURFIT WESTROCK PLC | 2,608,298 | $120.7M | 2.4% |
| LPX LOUISIANA PAC CORP | 1,521,859 | $119.7M | 2.3% |
| CNC CENTENE CORP DEL | 1,381,879 | $88.7M | 1.7% |
| ROCKET COS INC | 5,543,600 | $87.3M | 1.7% |
| AA ALCOA CORP | 1,577,720 | $82.3M | 1.6% |
| ARCB ARCBEST CORP | 535,746 | $76.9M | 1.5% |
| ELV ELEVANCE HEALTH INC FORMERLY | 191,500 | $74.1M | 1.5% |
| XPO XPO INC | 352,702 | $72.4M | 1.4% |
| RXO RXO INC | 2,583,655 | $71.3M | 1.4% |
| ALGOMA STL GROUP INC | 16,861,818 | $68.3M | 1.3% |
| FEDEX FGHT HLDG CO INC | 451,700 | $68.2M | 1.3% |
| JD JD.COM INC | 2,670,542 | $68.0M | 1.3% |
SEC FORM 13F · Q2 2026 · VALUES AS REPORTED, NOT PRICES
New positions this quarter
Held at 2026-06-30, not at 2026-03-31 · 11 in all · reported value as of 2026-06-30
| Holding | Shares | Reported value | % of portfolio |
|---|---|---|---|
| SW SMURFIT WESTROCK PLC | 2,608,298 | $120.7M | 2.4% |
| RXO RXO INC | 2,583,655 | $71.3M | 1.4% |
| FEDEX FGHT HLDG CO INC | 451,700 | $68.2M | 1.3% |
| MOS MOSAIC CO | 2,680,000 | $56.8M | 1.1% |
| RMBS RAMBUS INC DEL | 342,600 | $45.5M | 0.9% |
| GPK GRAPHIC PACKAGING HLDG CO | 4,099,800 | $43.3M | 0.8% |
| TECK TECK RESOURCES LTD | 718,500 | $42.7M | 0.8% |
| GENERAL MTRS CO | 499,497 | $38.5M | 0.8% |
| TLN TALEN ENERGY CORP | 80,300 | $30.9M | 0.6% |
| AMZN AMAZON COM INC | 108,000 | $25.7M | 0.5% |
| IP INTERNATIONAL PAPER CO | 284,400 | $10.8M | 0.2% |
Sold out
Held at 2026-03-31, gone by 2026-06-30 · 4 in all · reported value as of 2026-03-31
Biggest increases and decreases
Positions held at both quarter ends, by change in shares · reported value as of 2026-06-30
Increases
| Holding | Shares 2026-03-31 | Shares 2026-06-30 | Change | Reported value |
|---|---|---|---|---|
| UNH UNITEDHEALTH GROUP INC | 215,400 | 681,100 | +216.2% | $283.1M |
| ICLR ICON PUB LTD CO | 335,300 | 1,199,600 | +257.8% | $208.4M |
| HUM HUMANA INC | 344,800 | 628,251 | +82.2% | $249.6M |
| NUE NUCOR CORP | 117,212 | 614,000 | +423.8% | $136.8M |
| AAP ADVANCE AUTO PARTS INC | 1,298,140 | 2,421,040 | +86.5% | $150.6M |
| ELV ELEVANCE HEALTH INC FORMERLY | 62,000 | 191,500 | +208.9% | $74.1M |
| MT ARCELORMITTAL SA LUXEMBOURG | 1,414,265 | 2,190,860 | +54.9% | $131.9M |
| CNC CENTENE CORP DEL | 656,579 | 1,381,879 | +110.5% | $88.7M |
| ROCKET COS INC | 3,133,200 | 5,543,600 | +76.9% | $87.3M |
| BRITISH AMERN TOB PLC | 1,589,100 | 2,166,000 | +36.3% | $133.8M |
| WERN WERNER ENTERPRISES INC | 553,367 | 1,366,167 | +146.9% | $59.6M |
| AA ALCOA CORP | 903,320 | 1,577,720 | +74.7% | $82.3M |
Decreases
| Holding | Shares 2026-03-31 | Shares 2026-06-30 | Change | Reported value |
|---|---|---|---|---|
| SNDK SANDISK CORP | 166,500 | 1,906 | -98.9% | $4.3M |
| STX SEAGATE TECHNOLOGY HLDNGS PL | 533,985 | 301,162 | -43.6% | $290.6M |
| CLF CLEVELAND-CLIFFS INC NEW | 20,745,557 | 3,083,157 | -85.1% | $29.0M |
| LYFT LYFT INC | 4,124,703 | 2,062,351 | -50.0% | $30.1M |
| WDC WESTERN DIGITAL CORP | 1,400,434 | 1,357,834 | -3.0% | $867.3M |
| EQX EQUINOX GOLD CORP | 19,424,648 | 17,531,248 | -9.7% | $170.4M |
| ASO ACADEMY SPORTS & OUTDOORS IN | 840,000 | 586,400 | -30.2% | $27.6M |
| JD JD.COM INC | 3,026,262 | 2,670,542 | -11.8% | $68.0M |
CIK 1658363 · 13F FILINGS ON EDGAR · INFORMATIONAL ONLY
