Maple Rock Capital Partners Inc.: 13F holdings, Q2 2026
Hedge fund · SEC EDGAR filings (CIK 1658363) · Explore on the interactive board
Maple Rock Capital Partners Inc. disclosed 51 US equity positions worth $5.1bn in its Q2 2026 13F filing (holdings as of June 30, 2026, filed August 14, 2026). Its largest position is WDC at 17.0% of the reported book, followed by STX, UNH. The top ten holdings are 53.0% of the book, and the portfolio behaves like about 19 equal-weight positions. Versus the prior filing it opened 11 new positions, added to 25, reduced 8 and exited 4.
What does Maple Rock Capital Partners Inc. own? Top holdings as of June 30, 2026
Change is measured in shares against the previous filing (Q1 2026), so price moves do not read as decisions. This quarter: 11 new, 25 added, 8 reduced, 4 exited.
| # | Stock | Sector | Weight | Value | Shares | Δ shares | Action |
|---|---|---|---|---|---|---|---|
| 1 | WDC WESTERN DIGITAL CORP | Technology | 17.0% | $867.3m | 1,357,834 | -3% | reduced |
| 2 | STX SEAGATE TECHNOLOGY HLDNGS PL | Technology | 5.7% | $290.6m | 301,162 | -44% | reduced |
| 3 | UNH UNITEDHEALTH GROUP INC | Healthcare | 5.6% | $283.1m | 681,100 | 216% | added |
| 4 | HUM HUMANA INC | Healthcare | 4.9% | $249.6m | 628,251 | 82% | added |
| 5 | ICLR ICON PUB LTD CO | Healthcare | 4.1% | $208.4m | 1,199,600 | 258% | added |
| 6 | TFII TFI INTERNATIONAL INC | Industrials | 4.0% | $203.6m | 1,418,409 | 4% | added |
| 7 | EQX EQUINOX GOLD CORP | Basic Materials | 3.3% | $170.4m | 17,531,248 | -10% | reduced |
| 8 | AAP ADVANCE AUTO PARTS INC | Consumer Cyclical | 3.0% | $150.6m | 2,421,040 | 87% | added |
| 9 | BKD BROOKDALE SR LIVING INC | Healthcare | 2.8% | $143.0m | 8,888,148 | 9% | added |
| 10 | NUE NUCOR CORP | Basic Materials | 2.7% | $136.8m | 614,000 | 424% | added |
| 11 | BTI BRITISH AMERN TOB PLC | Consumer Defensive | 2.6% | $133.8m | 2,166,000 | 36% | added |
| 12 | ARCELORMITTAL SA LUXEMBOURG | 2.6% | $131.9m | 2,190,860 | 55% | added | |
| 13 | CVS CVS HEALTH CORP | Healthcare | 2.4% | $123.9m | 1,197,996 | 14% | added |
| 14 | SW SMURFIT WESTROCK PLC | Consumer Cyclical | 2.4% | $120.7m | 2,608,298 | – | new |
| 15 | LPX LOUISIANA PAC CORP | Industrials | 2.3% | $119.7m | 1,521,859 | 37% | added |
| 16 | CNC CENTENE CORP DEL | Healthcare | 1.7% | $88.7m | 1,381,879 | 110% | added |
| 17 | RKT ROCKET COS INC | Financial Services | 1.7% | $87.3m | 5,543,600 | 77% | added |
| 18 | AA ALCOA CORP | Basic Materials | 1.6% | $82.3m | 1,577,720 | 75% | added |
| 19 | ARCB ARCBEST CORP | Industrials | 1.5% | $76.9m | 535,746 | 32% | added |
| 20 | ELV ELEVANCE HEALTH INC FORMERLY | Healthcare | 1.5% | $74.1m | 191,500 | 209% | added |
| 21 | XPO XPO INC | Industrials | 1.4% | $72.4m | 352,702 | 10% | added |
| 22 | RXO RXO INC | Industrials | 1.4% | $71.3m | 2,583,655 | – | new |
| 23 | ASTL ALGOMA STL GROUP INC | 1.3% | $68.3m | 16,861,818 | 6% | added | |
| 24 | FDXF FEDEX FGHT HLDG CO INC | Industrials | 1.3% | $68.2m | 451,700 | – | new |
| 25 | JD JD.COM INC | Consumer Cyclical | 1.3% | $68.0m | 2,670,542 | -12% | reduced |
| 26 | WERN WERNER ENTERPRISES INC | Industrials | 1.2% | $59.6m | 1,366,167 | 147% | added |
| 27 | TPB TURNING PT BRANDS INC | Consumer Defensive | 1.1% | $58.2m | 686,800 | 58% | added |
| 28 | WAB WABTEC | Industrials | 1.1% | $58.1m | 215,400 | 0% | held |
| 29 | MOS MOSAIC CO | Basic Materials | 1.1% | $56.8m | 2,680,000 | – | new |
| 30 | MOH MOLINA HEALTHCARE INC | Healthcare | 1.1% | $55.6m | 243,300 | 43% | added |
| 31 | FBIN FORTUNE BRANDS INNOVATIONS I | Industrials | 1.1% | $54.7m | 996,282 | 105% | added |
| 32 | LKQ LKQ CORP | Consumer Cyclical | 1.1% | $54.4m | 2,065,565 | 0% | held |
| 33 | RUN SUNRUN INC | Technology | 1.0% | $49.4m | 3,694,548 | 23% | added |
| 34 | WGO WINNEBAGO INDS INC | Consumer Cyclical | 1.0% | $48.7m | 1,559,231 | 33% | added |
| 35 | RMBS RAMBUS INC DEL | Technology | 0.9% | $45.5m | 342,600 | – | new |
| 36 | NGVT INGEVITY CORP | Basic Materials | 0.9% | $45.0m | 603,303 | 0% | held |
| 37 | GPK GRAPHIC PACKAGING HLDG CO | Consumer Cyclical | 0.8% | $43.3m | 4,099,800 | – | new |
| 38 | TECK TECK RESOURCES LTD | Basic Materials | 0.8% | $42.7m | 718,500 | – | new |
| 39 | GM GENERAL MTRS CO | Consumer Cyclical | 0.8% | $38.5m | 499,497 | – | new |
| 40 | THO THOR INDS INC | Consumer Cyclical | 0.7% | $34.7m | 461,864 | 0% | held |
| 41 | TLN TALEN ENERGY CORP | Utilities | 0.6% | $30.9m | 80,300 | – | new |
| 42 | LVS LAS VEGAS SANDS CORP | Consumer Cyclical | 0.6% | $30.6m | 662,824 | 0% | held |
| 43 | LYFT LYFT INC | Technology | 0.6% | $30.1m | 2,062,351 | -50% | reduced |
| 44 | CLF CLEVELAND-CLIFFS INC NEW | Basic Materials | 0.6% | $29.0m | 3,083,157 | -85% | reduced |
| 45 | KNX KNIGHT-SWIFT TRANSN HLDGS IN | Industrials | 0.6% | $28.5m | 366,095 | 0% | held |
| 46 | ASO ACADEMY SPORTS & OUTDOORS IN | Consumer Cyclical | 0.5% | $27.6m | 586,400 | -30% | reduced |
| 47 | AMZN AMAZON COM INC | Consumer Cyclical | 0.5% | $25.7m | 108,000 | – | new |
| 48 | RYAM RAYONIER ADVANCED MATLS INC | Basic Materials | 0.5% | $25.6m | 3,256,889 | 0% | held |
| 49 | HCC WARRIOR MET COAL INC | Basic Materials | 0.4% | $20.6m | 253,559 | 77% | added |
| 50 | IP INTERNATIONAL PAPER CO | Consumer Cyclical | 0.2% | $10.8m | 284,400 | – | new |
What did Maple Rock Capital Partners Inc. sell? Positions exited since the previous filing
| Stock | Prior weight | Prior value |
|---|---|---|
| GT GOODYEAR TIRE & RUBR CO | 31.9% | $38.6m |
| BTG B2GOLD CORP | 30.6% | $37.0m |
| WHR WHIRLPOOL CORP | 26.4% | $32.0m |
| CAR AVIS BUDGET GROUP INC | 11.1% | $13.5m |
Sector mix
| Sector | Weight |
|---|---|
| Technology | 25.2% |
| Healthcare | 24.0% |
| Industrials | 15.9% |
| Consumer Cyclical | 12.8% |
| Basic Materials | 11.9% |
| Consumer Defensive | 3.8% |
Sectors cover positions whose ticker resolved to a sector; the remainder is unclassified, not cash.
Filing history
How concentrated is Maple Rock Capital Partners Inc.'s portfolio?
Across every quarter Maple Rock Capital Partners Inc. has filed, its median largest position is 14.7% of the book and its median top-ten weight is 53.7%, which WhaleCreep classifies as concentrated (the gate is a median largest position of 5%). Of 4.0 completed holding spells, the median lasted 1.0 quarters; 51.0 positions are still open and their final length is unknown.