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Maple Rock Capital Partners Inc.

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13F filer, CIK 1658363, Toronto, Ontario, Canada

Maple Rock Capital Partners Inc. reported $3,073,484,583 across 44 holdings for the quarter ended 2026-03-31, in a 13F-HR filed 2026-05-15. Its ten largest share positions make up 54.42% of the portfolio.

Filed (acceptance time not in the bulk data set), ingested 13F-HR 0001658363-26-000005

Period
2026-03-31
Reported value
$3.07B
Holdings
44
Top 10 weight
54.42%
New
13
Sold out
7

Largest buys vs the previous quarter

SecurityShares changeApprox. value
TFIInew+1,361,831$148M
CLFadded+8,387,327$70.9M
XPOnew+320,242$62.3M
WABnew+215,400$53.8M
ASOnew+840,000$47.4M

Ranked by the share change valued at this quarter's implied price (value over shares in the 13F). A position sold out is valued at the previous quarter's price, its last report.

Largest sells vs the previous quarter

SecurityShares changeApprox. value
WDCreduced-981,091-$265M
SNDKreduced-321,800-$204M
AAreduced-2,359,980-$157M
HCCreduced-1,494,179-$139M
SEEexited-2,105,556-$87.2M

Ranked by the share change valued at this quarter's implied price (value over shares in the 13F). A position sold out is valued at the previous quarter's price, its last report.

Holdings, Q1 2026

Share positions as resolved from 13F-HR 0001658363-26-000005, largest first. % of portfolio is the value over $3,073,484,583, the sum of the share positions whose value is usable for ratios (method).

SecurityHistorySharesValue% of portfolioChangeLatest eventTimeline
WDCWESTERN DIGITAL CORPQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q2: restricted; 2024Q3: 3,287,400 shares; 2024Q4: 2,983,900 shares; 2025Q1: 3,189,796 shares; 2025Q2: 3,735,296 shares; 2025Q3: 2,589,325 shares; 2025Q4: 2,381,525 shares; 2026Q1: 1,400,434 shares 1,400,434$379M12.32%-981,091Timeline
EQXEQUINOX GOLD CORPQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q2: restricted; 2024Q3: 9,169,400 shares; 2024Q4: 8,753,400 shares; 2025Q1: 7,079,488 shares; 2025Q2: 14,308,748 shares; 2025Q3: 16,644,848 shares; 2025Q4: 20,234,048 shares; 2026Q1: 19,424,648 shares 19,424,648$281M9.14%-809,400Timeline
STXSEAGATE TECHNOLOGY HLDNGS PLQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q2: restricted; 2024Q3: 274,900 shares; 2024Q4: 274,900 shares; 2025Q1: 610,906 shares; 2025Q2: 1,131,752 shares; 2025Q3: 740,352 shares; 2025Q4: 665,852 shares; 2026Q1: 533,985 shares 533,985$209M6.81%-131,867Timeline
CLFCLEVELAND-CLIFFS INC NEWQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q2: restricted; 2024Q3: not reported; 2024Q4: not reported; 2025Q1: not reported; 2025Q2: 8,385,600 shares; 2025Q3: 6,502,400 shares; 2025Q4: 12,358,230 shares; 2026Q1: 20,745,557 shares 20,745,557$175M5.7%+8,387,327Timeline
TFIITFI INTERNATIONAL INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q2: restricted; 2024Q3: 436,999 shares; 2024Q4: 507,783 shares; 2025Q1: 1,130,899 shares; 2025Q2: 1,147,662 shares; 2025Q3: 1,098,362 shares; 2025Q4: not reported; 2026Q1: 1,361,831 shares 1,361,831$148M4.81%newTimeline
BKDBROOKDALE SR LIVING INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q2: restricted; 2024Q3: not reported; 2024Q4: not reported; 2025Q1: not reported; 2025Q2: 6,581,048 shares; 2025Q3: 6,298,048 shares; 2025Q4: 8,497,048 shares; 2026Q1: 8,157,148 shares 8,157,148$112M3.63%-339,900Timeline
SNDKSANDISK CORPQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q2: restricted; 2024Q3: not reported; 2024Q4: not reported; 2025Q1: 248,355 shares; 2025Q2: 552,000 shares; 2025Q3: 742,500 shares; 2025Q4: 488,300 shares; 2026Q1: 166,500 shares 166,500$106M3.44%-321,800Timeline
BTIBRITISH AMERN TOB PLCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q2: restricted; 2024Q3: not reported; 2024Q4: not reported; 2025Q1: not reported; 2025Q2: 1,346,400 shares; 2025Q3: 1,169,800 shares; 2025Q4: 1,655,300 shares; 2026Q1: 1,589,100 shares 1,589,100$92.9M3.02%-66,200Timeline
JDJD.COM INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q2: restricted; 2024Q3: 3,577,138 shares; 2024Q4: 1,221,638 shares; 2025Q1: 918,510 shares; 2025Q2: 1,849,324 shares; 2025Q3: 2,244,062 shares; 2025Q4: 1,920,162 shares; 2026Q1: 3,026,262 shares 3,026,262$89.5M2.91%+1,106,100Timeline
LPXLOUISIANA PAC CORPQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q2: restricted; 2024Q3: not reported; 2024Q4: not reported; 2025Q1: 161,210 shares; 2025Q2: 144,168 shares; 2025Q3: 241,468 shares; 2025Q4: 588,868 shares; 2026Q1: 1,112,559 shares 1,112,559$80.9M2.63%+523,691Timeline
CVSCVS HEALTH CORPQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q2: restricted; 2024Q3: not reported; 2024Q4: not reported; 2025Q1: not reported; 2025Q2: not reported; 2025Q3: not reported; 2025Q4: 816,400 shares; 2026Q1: 1,048,100 shares 1,048,100$75.3M2.45%+231,700Timeline
MTARCELORMITTAL SA LUXEMBOURGQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q2: restricted; 2024Q3: not reported; 2024Q4: not reported; 2025Q1: not reported; 2025Q2: not reported; 2025Q3: 1,145,200 shares; 2025Q4: 1,630,600 shares; 2026Q1: 1,414,265 shares 1,414,265$73.5M2.39%-216,335Timeline
AAPADVANCE AUTO PARTS INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q2: restricted; 2024Q3: 232,000 shares; 2024Q4: 232,000 shares; 2025Q1: 218,080 shares; 2025Q2: 156,500 shares; 2025Q3: 951,790 shares; 2025Q4: 1,352,240 shares; 2026Q1: 1,298,140 shares 1,298,140$68.5M2.23%-54,100Timeline
ASTLALGOMA STL GROUP INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q2: restricted; 2024Q3: 6,092,091 shares; 2024Q4: 6,092,091 shares; 2025Q1: 7,100,000 shares; 2025Q2: 8,396,800 shares; 2025Q3: 10,430,818 shares; 2025Q4: 14,430,818 shares; 2026Q1: 15,930,818 shares 15,930,818$65.8M2.14%+1,500,000Timeline
XPOXPO INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q2: restricted; 2024Q3: not reported; 2024Q4: not reported; 2025Q1: not reported; 2025Q2: not reported; 2025Q3: not reported; 2025Q4: not reported; 2026Q1: 320,242 shares 320,242$62.3M2.03%newTimeline
LKQLKQ CORPQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q2: restricted; 2024Q3: not reported; 2024Q4: not reported; 2025Q1: 255,000 shares; 2025Q2: 227,975 shares; 2025Q3: 290,900 shares; 2025Q4: 1,047,100 shares; 2026Q1: 2,065,565 shares 2,065,565$60.7M1.97%+1,018,465Timeline
AAALCOA CORPQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q2: restricted; 2024Q3: not reported; 2024Q4: not reported; 2025Q1: not reported; 2025Q2: not reported; 2025Q3: not reported; 2025Q4: 3,263,300 shares; 2026Q1: 903,320 shares 903,320$59.9M1.95%-2,359,980Timeline
HUMHUMANA INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q2: restricted; 2024Q3: not reported; 2024Q4: not reported; 2025Q1: 112,330 shares; 2025Q2: 104,544 shares; 2025Q3: 283,300 shares; 2025Q4: 172,700 shares; 2026Q1: 344,800 shares 344,800$59.8M1.95%+172,100Timeline
UNHUNITEDHEALTH GROUP INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q2: restricted; 2024Q3: not reported; 2024Q4: not reported; 2025Q1: not reported; 2025Q2: not reported; 2025Q3: 59,100 shares; 2025Q4: 55,000 shares; 2026Q1: 215,400 shares 215,400$58.3M1.9%+160,400Timeline
LYFTLYFT INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q2: restricted; 2024Q3: 6,186,000 shares; 2024Q4: 5,435,000 shares; 2025Q1: 4,692,480 shares; 2025Q2: 4,297,041 shares; 2025Q3: 3,509,633 shares; 2025Q4: 4,296,603 shares; 2026Q1: 4,124,703 shares 4,124,703$54.9M1.78%-171,900Timeline
WABWABTECQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q2: restricted; 2024Q3: not reported; 2024Q4: not reported; 2025Q1: not reported; 2025Q2: not reported; 2025Q3: not reported; 2025Q4: not reported; 2026Q1: 215,400 shares 215,400$53.8M1.75%newTimeline
ASOACADEMY SPORTS & OUTDOORS INQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q2: restricted; 2024Q3: not reported; 2024Q4: not reported; 2025Q1: not reported; 2025Q2: not reported; 2025Q3: not reported; 2025Q4: not reported; 2026Q1: 840,000 shares 840,000$47.4M1.54%newTimeline
RKTROCKET COS INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q2: restricted; 2024Q3: not reported; 2024Q4: not reported; 2025Q1: not reported; 2025Q2: 2,326,100 shares; 2025Q3: 2,650,000 shares; 2025Q4: 1,819,500 shares; 2026Q1: 3,133,200 shares 3,133,200$44.6M1.45%+1,313,700Timeline
NGVTINGEVITY CORPQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q2: restricted; 2024Q3: not reported; 2024Q4: 429,816 shares; 2025Q1: 536,816 shares; 2025Q2: 653,516 shares; 2025Q3: 674,716 shares; 2025Q4: 674,716 shares; 2026Q1: 603,303 shares 603,303$43M1.4%-71,413Timeline
RUNSUNRUN INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q2: restricted; 2024Q3: 1,865,600 shares; 2024Q4: 3,597,600 shares; 2025Q1: 4,158,184 shares; 2025Q2: 8,132,648 shares; 2025Q3: 7,439,848 shares; 2025Q4: 5,322,948 shares; 2026Q1: 3,002,100 shares 3,002,100$40.7M1.32%-2,320,848Timeline
ARCBARCBEST CORPQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q2: restricted; 2024Q3: not reported; 2024Q4: not reported; 2025Q1: not reported; 2025Q2: not reported; 2025Q3: not reported; 2025Q4: 143,750 shares; 2026Q1: 404,346 shares 404,346$39.8M1.29%+260,596Timeline
GTGOODYEAR TIRE & RUBR COQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q2: restricted; 2024Q3: not reported; 2024Q4: 1,874,961 shares; 2025Q1: 1,762,463 shares; 2025Q2: 5,561,846 shares; 2025Q3: 6,471,446 shares; 2025Q4: 3,972,546 shares; 2026Q1: 5,817,063 shares 5,817,063$38.6M1.25%+1,844,517Timeline
TPBTURNING PT BRANDS INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q2: restricted; 2024Q3: not reported; 2024Q4: not reported; 2025Q1: not reported; 2025Q2: 243,600 shares; 2025Q3: 229,300 shares; 2025Q4: 399,300 shares; 2026Q1: 436,000 shares 436,000$37.8M1.23%+36,700Timeline
ICLRICON PUB LTD COQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q2: restricted; 2024Q3: not reported; 2024Q4: not reported; 2025Q1: not reported; 2025Q2: not reported; 2025Q3: not reported; 2025Q4: not reported; 2026Q1: 335,300 shares 335,300$37.1M1.21%newTimeline
BTGB2GOLD CORPQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q2: restricted; 2024Q3: not reported; 2024Q4: not reported; 2025Q1: not reported; 2025Q2: not reported; 2025Q3: not reported; 2025Q4: not reported; 2026Q1: 8,158,600 shares 8,158,600$37M1.2%newTimeline
THOTHOR INDS INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q2: restricted; 2024Q3: not reported; 2024Q4: not reported; 2025Q1: 119,455 shares; 2025Q2: 183,664 shares; 2025Q3: 183,664 shares; 2025Q4: 170,764 shares; 2026Q1: 461,864 shares 461,864$36.9M1.2%+291,100Timeline
WGOWINNEBAGO INDS INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q2: restricted; 2024Q3: not reported; 2024Q4: not reported; 2025Q1: 175,310 shares; 2025Q2: 322,099 shares; 2025Q3: 680,199 shares; 2025Q4: not reported; 2026Q1: 1,169,831 shares 1,169,831$36.3M1.18%newTimeline
RYAMRAYONIER ADVANCED MATLS INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q2: restricted; 2024Q3: not reported; 2024Q4: not reported; 2025Q1: not reported; 2025Q2: not reported; 2025Q3: not reported; 2025Q4: not reported; 2026Q1: 3,256,889 shares 3,256,889$36.1M1.17%newTimeline
LVSLAS VEGAS SANDS CORPQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q2: restricted; 2024Q3: not reported; 2024Q4: 476,000 shares; 2025Q1: 447,440 shares; 2025Q2: 1,003,880 shares; 2025Q3: 803,280 shares; 2025Q4: 1,380,847 shares; 2026Q1: 662,824 shares 662,824$35.7M1.16%-718,023Timeline
WHRWHIRLPOOL CORPQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q2: restricted; 2024Q3: not reported; 2024Q4: 80,500 shares; 2025Q1: 116,710 shares; 2025Q2: 533,655 shares; 2025Q3: 184,400 shares; 2025Q4: 404,000 shares; 2026Q1: 593,200 shares 593,200$32M1.04%+189,200Timeline
MOHMOLINA HEALTHCARE INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q2: restricted; 2024Q3: not reported; 2024Q4: not reported; 2025Q1: not reported; 2025Q2: not reported; 2025Q3: 81,800 shares; 2025Q4: 226,200 shares; 2026Q1: 169,700 shares 169,700$22.6M0.74%-56,500Timeline
CNCCENTENE CORP DELQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q2: restricted; 2024Q3: not reported; 2024Q4: not reported; 2025Q1: not reported; 2025Q2: not reported; 2025Q3: 1,338,299 shares; 2025Q4: 1,011,199 shares; 2026Q1: 656,579 shares 656,579$21.5M0.7%-354,620Timeline
KNXKNIGHT-SWIFT TRANSN HLDGS INQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q2: restricted; 2024Q3: not reported; 2024Q4: not reported; 2025Q1: not reported; 2025Q2: not reported; 2025Q3: not reported; 2025Q4: not reported; 2026Q1: 366,095 shares 366,095$21.1M0.69%newTimeline
NUENUCOR CORPQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q2: restricted; 2024Q3: not reported; 2024Q4: not reported; 2025Q1: not reported; 2025Q2: not reported; 2025Q3: 226,200 shares; 2025Q4: not reported; 2026Q1: 117,212 shares 117,212$19.8M0.64%newTimeline
FBINFORTUNE BRANDS INNOVATIONS IQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q2: restricted; 2024Q3: not reported; 2024Q4: not reported; 2025Q1: not reported; 2025Q2: not reported; 2025Q3: not reported; 2025Q4: not reported; 2026Q1: 485,782 shares 485,782$18.9M0.62%newTimeline
ELVELEVANCE HEALTH INC FORMERLYQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q2: restricted; 2024Q3: not reported; 2024Q4: not reported; 2025Q1: not reported; 2025Q2: not reported; 2025Q3: not reported; 2025Q4: not reported; 2026Q1: 62,000 shares 62,000$18.2M0.59%newTimeline
WERNWERNER ENTERPRISES INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q2: restricted; 2024Q3: not reported; 2024Q4: 981,540 shares; 2025Q1: not reported; 2025Q2: not reported; 2025Q3: not reported; 2025Q4: 793,500 shares; 2026Q1: 553,367 shares 553,367$16.3M0.53%-240,133Timeline
CARAVIS BUDGET GROUP INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q2: restricted; 2024Q3: not reported; 2024Q4: not reported; 2025Q1: 315,631 shares; 2025Q2: 415,584 shares; 2025Q3: not reported; 2025Q4: not reported; 2026Q1: 92,248 shares 92,248$13.5M0.44%newTimeline
HCCWARRIOR MET COAL INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q2: restricted; 2024Q3: 1,460,992 shares; 2024Q4: 1,080,392 shares; 2025Q1: 1,305,392 shares; 2025Q2: 1,112,338 shares; 2025Q3: 1,461,738 shares; 2025Q4: 1,637,238 shares; 2026Q1: 143,059 shares 143,059$13.3M0.43%-1,494,179Timeline

Sold out in Q1 2026

Positions in the previous quarter's report that this quarter's report no longer lists.

SecurityShares beforeValue beforeType
SEESEALED AIR CORP NEW2,105,556$87.2Mshares
BBARRICK MNG CORP1,991,400$86.7Mshares
TECKTECK RESOURCES LTD1,393,516$66.7Mshares
PDDPDD HOLDINGS INC306,641$34.8Mshares
PAGSPAGSEGURO DIGITAL LTD3,365,400$32.4Mshares
JBSJBS N.V.985,106$14.2Mshares
UWMCUWM HOLDINGS CORPORATION2,204,100$9.65Mshares

How Q1 2026 was built

Available 13F filings of this filer for the quarter and their roles: the base report is the latest original or restatement, NEW HOLDINGS amendments filed after it are added (method).

FilingRoleAmendmentFiledAcceptedIngested
13F-HR 0001658363-26-000005 base2026-05-15acceptance time not in the bulk data set