Maple Rock Capital Partners Inc.
In its 13F for Q2 2026 (holdings as of June 30, 2026, filed August 14, 2026), Maple Rock Capital Partners Inc. reported 51 stock positions worth $5.1 billion. Its top holding was Western Digital (WDC) at 17.0% of the portfolio, followed by Seagate Technology (STX, 5.7%) and Unitedhealth (UNH, 5.6%). Compared with Q1 2026, it opened 11 new positions, sold out of 4, added to 25 and reduced 8. The biggest buy was Unitedhealth (UNH, shares +216%) and the biggest sale Equinox Gold (EQX, shares −10%).
- Most Recent 13F
- Q2 2026
- Location
- Toronto, A6
- CIK
- 0001658363
- Portfolio Value
- $5.1B (Q2 2026)
- SEC Filing
- 0001658363-26-000007 ↗ filed Aug 14, 2026
Holdings Value
Holdings 51 stocks · $5.1B
| WDC Western Digital Corp. | 17.01% | 1,357,834 | $867.3M | Reduce -3.0% |
| STX Seagate Technology Holdings | 5.70% | 301,162 | $290.6M | Reduce -43.6% |
| UNH Unitedhealth Group Inc. | 5.55% | 681,100 | $283.1M | Add +216.2% |
| HUM Humana Inc. | 4.89% | 628,251 | $249.6M | Add +82.2% |
| ICLR Icon PLC filed as ICON PUB LTD CO | 4.09% | 1,199,600 | $208.4M | Add +257.8% |
| TFII Tfi International Inc. | 3.99% | 1,418,409 | $203.6M | Add +4.2% |
| EQX Equinox Gold Corp. | 3.34% | 17,531,248 | $170.4M | Reduce -9.8% |
| AAP Advance Auto Parts Inc. | 2.95% | 2,421,040 | $150.6M | Add +86.5% |
| BKD Brookdale Senior Living Inc. | 2.80% | 8,888,148 | $143.0M | Add +9.0% |
| NUE Nucor Corp. | 2.68% | 614,000 | $136.8M | Add +423.8% |
| BTI British American Tob-SP ADR | 2.62% | 2,166,000 | $133.8M | Add +36.3% |
| MT Arcelormittal-NY Registered | 2.59% | 2,190,860 | $131.9M | Add +54.9% |
| CVS CVS Health Corp. | 2.43% | 1,197,996 | $123.9M | Add +14.3% |
| SW Smurfit Westrock PLC | 2.37% | 2,608,298 | $120.7M | New |
| LPX Louisiana-Pacific Corp. | 2.35% | 1,521,859 | $119.7M | Add +36.8% |
| CNC Centene Corp. | 1.74% | 1,381,879 | $88.7M | Add +110.5% |
| RKT Rocket Cos Inc. Class A | 1.71% | 5,543,600 | $87.3M | Add +76.9% |
| AA Alcoa Corp. | 1.61% | 1,577,720 | $82.3M | Add +74.7% |
| ARCB Arcbest Corp. | 1.51% | 535,746 | $76.9M | Add +32.5% |
| ELV Elevance Health Inc. | 1.45% | 191,500 | $74.1M | Add +208.9% |
| XPO Xpo Inc. | 1.42% | 352,702 | $72.4M | Add +10.1% |
| RXO Rxo Inc. | 1.40% | 2,583,655 | $71.3M | New |
| ASTL Algoma Steel Group Inc. | 1.34% | 16,861,818 | $68.3M | Add +5.8% |
| FDXF FedEx Freight Holding Co. | 1.34% | 451,700 | $68.2M | New |
| JD Jd.com Inc.-ADR | 1.33% | 2,670,542 | $68.0M | Reduce -11.8% |
| WERN Werner Enterprises Inc. | 1.17% | 1,366,167 | $59.6M | Add +146.9% |
| TPB Turning Point Brands Inc. | 1.14% | 686,800 | $58.2M | Add +57.5% |
| WAB Wabtec Corp. | 1.14% | 215,400 | $58.1M | No change |
| MOS The Mosaic Co. | 1.11% | 2,680,000 | $56.8M | New |
| MOH Molina Healthcare Inc. | 1.09% | 243,300 | $55.6M | Add +43.4% |
| FBIN Fortune Brands Innovations I | 1.07% | 996,282 | $54.7M | Add +105.1% |
| LKQ LKQ Corp. | 1.07% | 2,065,565 | $54.4M | No change |
| RUN Sunrun Inc. | 0.97% | 3,694,548 | $49.4M | Add +23.1% |
| WGO Winnebago Industries | 0.96% | 1,559,231 | $48.7M | Add +33.3% |
| RMBS Rambus Inc. | 0.89% | 342,600 | $45.5M | New |
| NGVT Ingevity Corp. | 0.88% | 603,303 | $45.0M | No change |
| GPK Graphic Packaging Holding Co. | 0.85% | 4,099,800 | $43.3M | New |
| TECK Teck Resources Ltd.-CLS B | 0.84% | 718,500 | $42.7M | New |
| GM General Motors Co. | 0.75% | 499,497 | $38.5M | New |
| THO Thor Industries Inc. | 0.68% | 461,864 | $34.7M | No change |
| TLN Talen Energy Corp. | 0.60% | 80,300 | $30.9M | New |
| LVS Las Vegas Sands Corp. | 0.60% | 662,824 | $30.6M | No change |
| LYFT LYFT Inc. Class A | 0.59% | 2,062,351 | $30.1M | Reduce -50.0% |
| CLF Cleveland-Cliffs Inc. | 0.57% | 3,083,157 | $29.0M | Reduce -85.1% |
| KNX Knight-Swift Transportation | 0.56% | 366,095 | $28.5M | No change |
| ASO Academy Sports & Outdoors Inc. | 0.54% | 586,400 | $27.6M | Reduce -30.2% |
| AMZN Amazon.com Inc. | 0.50% | 108,000 | $25.7M | New |
| RYAM Rayonier Advanced Materials | 0.50% | 3,256,889 | $25.6M | No change |
| HCC Warrior Met Coal Inc. | 0.40% | 253,559 | $20.6M | Add +77.2% |
| IP International Paper Co. | 0.21% | 284,400 | $10.8M | New |
| SNDK Sandisk Corp. | 0.09% | 1,906 | $4.3M | Reduce -98.9% |
Portfolio Sells Q1 2026 → Q2 2026
| EQX Equinox Gold Corp. | Reduce -9.8% | 3.34% | −5.79 |
| CLF Cleveland-Cliffs Inc. | Reduce -85.1% | 0.57% | −5.14 |
| SNDK Sandisk Corp. | Reduce -98.9% | 0.09% | −3.36 |
| JD Jd.com Inc.-ADR | Reduce -11.8% | 1.33% | −1.58 |
| GT Goodyear Tire & Rubber Co. | Sold out | 0.00% | −1.25 |
| BTG B2GOLD Corp. | Sold out | 0.00% | −1.20 |
| LYFT LYFT Inc. Class A | Reduce -50.0% | 0.59% | −1.19 |
| STX Seagate Technology Holdings | Reduce -43.6% | 5.70% | −1.11 |
| WHR Whirlpool Corp. | Sold out | 0.00% | −1.04 |
| ASO Academy Sports & Outdoors Inc. | Reduce -30.2% | 0.54% | −1.00 |
| CAR Avis Budget Group Inc. | Sold out | 0.00% | −0.44 |
| WDC Western Digital Corp. | Reduce -3.0% | 17.01% | +4.68 |
Portfolio Buys Q1 2026 → Q2 2026
| UNH Unitedhealth Group Inc. | Add +216.2% | 5.55% | +3.65 |
| HUM Humana Inc. | Add +82.2% | 4.89% | +2.95 |
| ICLR Icon PLC | Add +257.8% | 4.09% | +2.88 |
| SW Smurfit Westrock PLC | New | 2.37% | +2.37 |
| NUE Nucor Corp. | Add +423.8% | 2.68% | +2.04 |
| RXO Rxo Inc. | New | 1.40% | +1.40 |
| FDXF FedEx Freight Holding Co. | New | 1.34% | +1.34 |
| MOS The Mosaic Co. | New | 1.11% | +1.11 |
| CNC Centene Corp. | Add +110.5% | 1.74% | +1.04 |
| RMBS Rambus Inc. | New | 0.89% | +0.89 |
| ELV Elevance Health Inc. | Add +208.9% | 1.45% | +0.86 |
| GPK Graphic Packaging Holding Co. | New | 0.85% | +0.85 |
| TECK Teck Resources Ltd.-CLS B | New | 0.84% | +0.84 |
| GM General Motors Co. | New | 0.75% | +0.75 |
| AAP Advance Auto Parts Inc. | Add +86.5% | 2.95% | +0.73 |
| WERN Werner Enterprises Inc. | Add +146.9% | 1.17% | +0.64 |
| TLN Talen Energy Corp. | New | 0.60% | +0.60 |
| AMZN Amazon.com Inc. | New | 0.50% | +0.50 |
| FBIN Fortune Brands Innovations I | Add +105.1% | 1.07% | +0.46 |
| MOH Molina Healthcare Inc. | Add +43.4% | 1.09% | +0.35 |
| RKT Rocket Cos Inc. Class A | Add +76.9% | 1.71% | +0.26 |
| ARCB Arcbest Corp. | Add +32.5% | 1.51% | +0.21 |
| IP International Paper Co. | New | 0.21% | +0.21 |
| MT Arcelormittal-NY Registered | Add +54.9% | 2.59% | +0.20 |
| CVS CVS Health Corp. | Add +14.3% | 2.43% | −0.02 |
| HCC Warrior Met Coal Inc. | Add +77.2% | 0.40% | −0.03 |
| TPB Turning Point Brands Inc. | Add +57.5% | 1.14% | −0.09 |
| WGO Winnebago Industries | Add +33.3% | 0.96% | −0.22 |
| LPX Louisiana-Pacific Corp. | Add +36.8% | 2.35% | −0.29 |
| AA Alcoa Corp. | Add +74.7% | 1.61% | −0.34 |
| RUN Sunrun Inc. | Add +23.1% | 0.97% | −0.36 |
| BTI British American Tob-SP ADR | Add +36.3% | 2.62% | −0.40 |
| XPO Xpo Inc. | Add +10.1% | 1.42% | −0.61 |
| ASTL Algoma Steel Group Inc. | Add +5.8% | 1.34% | −0.80 |
| TFII Tfi International Inc. | Add +4.2% | 3.99% | −0.82 |
| BKD Brookdale Senior Living Inc. | Add +9.0% | 2.80% | −0.83 |
All Filings
| Quarter | Positions | 13F Reported Value | Top Holdings |
|---|---|---|---|
| Q2 2026 | 51 | $5.1B | WDC, STX, UNH, HUM, ICLR |
| Q1 2026 | 44 | $3.1B | WDC, EQX, STX, CLF, TFII |
| Q4 2025 | 38 | $3.0B | WDC, EQX, STX, AA, CLF |
| Q3 2025 | 40 | $2.5B | WDC, EQX, STX, RUN, TFII |
| Q2 2025 | 39 | $2.0B | WDC, STX, TFII, EQX, PDD |
| Q1 2025 | 35 | $1.4B | WDC, TFII, BABA, TLN, PDD |
| Q4 2024 | 29 | $1.4B | WDC, TEVA, TLN, LYFT, TFII |
| Q3 2024 | 28 | $1.8B | WDC, VST, JD, TLN, BABA |
| Q2 2024 | 27 | $1.5B | WDC, SPR, VST, JD, BABA |
| Q1 2024 | 29 | $1.6B | WDC, SPR, VST, JD, ARCH |