Maple Rock Capital Partners Inc.

CIK

1658363

Location

Toronto, A6

Portfolio Value

Mid $3,073,578,535

Diversification

Diversified

Filing Date

Global Rank

#916 / 8,622 ▲ 20 · as of Mar 2026

Top Industry

Computer Hardware 22.6%

3Y Alpha vs SPY

+22.0%

Period ended 4 months ago

Filed May 15, 2026 · 3mo

25 quarters · since Mar 2020

Clone Performance

Jul 2023–Jul 2026 · vs SPY

Hypothetical growth of buying every stock this filer reported holding, rebalancing on each filing and indexed to the same start. Option positions cannot be bought this way and are left out.

Not a measure of this manager's performance. Most of Maple Rock Capital Partners Inc.'s reported book is option positions, which a stock-only clone cannot replicate. The figures below are the return of the 73% that is ordinary stock — as little as 40% in one quarter — so a manager whose options thesis lost money can still show a large gain here.

Cloned portfolio

+166.1%

SPY

+67.9%

Annualised alpha

+19.7%

Max drawdown

−30.3%

Estimate. 13F holdings are quarter-lagged, so the clone rebalances about 45 days after each period end — when the filing becomes public — and it excludes option and short positions. It tracks 73% of reported value on average across 13 quarters. Past performance does not predict future results.

Portfolio Concentration

44 tracked positions · as of Mar 31, 2026 · Δ vs Dec 31, 2025

Top Position

12.3%

−1.2 pts

Top 5

38.8%

−1.4 pts

Top 10

54.4%

−3.7 pts

HHI

460

Diversified−57

Portfolio Trend

25 quarters · across all stocks

Sector Breakdown

As of Mar 31, 2026

Sector	% Portfolio	Value	Positions
Basic Materials	26.2%	$804,537,338	10
Technology	25.7%	$789,348,490	5
Industrials	14.8%	$454,519,102	9
Consumer Cyclical	14.5%	$445,463,900	9
Healthcare	13.2%	$404,306,488	8
Consumer Defensive	4.3%	$130,755,117	2
Financial Services	1.5%	$44,648,100	1

Last Quarter's Activity

Export CSV

Mar 31, 2026 vs Dec 31, 2025

Added To

Positions the filer increased

14 positions

Ticker	Company	Δ Shares	Shares	Value
CLF	Cleveland-Cliffs Inc.	+8,387,327	20,745,557	$175,299,956
GT	Goodyear Tire & Rubber Co /Oh/	+1,844,517	5,817,063	$38,567,127
ASTL	Algoma Steel Group Inc.	+1,500,000	15,930,818	$65,794,278
RKT	Rocket Companies, Inc.	+1,313,700	3,133,200	$44,648,100
JD	JD.com, Inc.	+1,106,100	3,026,262	$89,486,567
LKQ	Lkq Corp	+1,018,465	2,065,565	$60,665,644
LPX	Louisiana-Pacific Corp	+523,691	1,112,559	$80,938,667
THO	Thor Industries Inc	+291,100	461,864	$36,898,314
ARCB	Arcbest Corp /De/	+260,596	404,346	$39,771,472
CVS	CVS HEALTH Corp	+231,700	1,048,100	$75,274,542
WHR	Whirlpool Corp /De/	+189,200	593,200	$31,985,344
HUM	Humana Inc	+172,100	344,800	$59,784,872
UNH	Unitedhealth Group Inc	+160,400	215,400	$58,285,086
TPB	Turning Point Brands, Inc.	+36,700	436,000	$37,840,440
No positions match the current search.

Trimmed

Positions the filer reduced

17 positions

Ticker	Company	Δ Shares	Shares	Value
AA	Alcoa Corp	−2,359,980	903,320	$59,917,215
RUN	Sunrun Inc.	−2,320,848	3,002,100	$40,708,476
HCC	Warrior Met Coal, Inc.	−1,494,179	143,059	$13,325,945
WDC	Western Digital Corp	−981,091	1,400,434	$378,803,392
EQX	Equinox Gold Corp.	−809,400	19,424,648	$280,880,410
LVS	Las Vegas Sands Corp	−718,023	662,824	$35,712,957
CNC	Centene Corp	−354,620	656,579	$21,496,396
BKD	Brookdale Senior Living Inc.	−339,900	8,157,148	$111,589,784
SNDK	Sandisk Corp	−321,800	166,500	$105,784,110
WERN	Werner Enterprises Inc	−240,133	553,367	$16,274,523
MT	ArcelorMittal	−216,335	1,414,265	$73,513,494
LYFT	Lyft, Inc.	−171,900	4,124,703	$54,858,549
STX	Seagate Technology Holdings plc	−131,867	533,985	$209,193,963
NGVT	Ingevity Corp	−71,413	603,303	$42,973,272
BTI	British American Tobacco p.l.c.	−66,200	1,589,100	$92,914,677
MOH	Molina Healthcare, Inc.	−56,500	169,700	$22,621,010
AAP	Advance Auto Parts Inc	−54,100	1,298,140	$68,476,885
No positions match the current search.

New Positions

Positions the filer opened this quarter

13 positions

Ticker	Company	Shares	Value
TFII	TFI International Inc.	1,361,831	$147,935,701
XPO	XPO, Inc.	320,242	$62,303,081
WAB	Westinghouse Air Brake Technologies Corp	215,400	$53,830,614
ASO	Academy Sports & Outdoors, Inc.	840,000	$47,418,000
ICLR	Icon PLC	335,300	$37,104,298
BTG	B2gold Corp	8,158,600	$36,958,458
WGO	Winnebago Industries Inc	1,169,831	$36,253,062
RYAM	Rayonier Advanced Materials Inc.	3,256,889	$36,053,761
KNX	Knight-Swift Transportation Holdings Inc.	366,095	$21,079,750
NUE	Nucor Corp	117,212	$19,820,549
FBIN	Fortune Brands Innovations, Inc.	485,782	$18,930,924
ELV	Elevance Health, Inc.	62,000	$18,150,500
CAR	Avis Budget Group, Inc.	92,248	$13,454,370
No positions match the current search.

Sold Out

Positions the filer fully exited

7 positions

Ticker	Company	Shares	Value
SEE	SEALED AIR CORP/DE	2,105,556	$87,233,185
B	Barrick Mining Corp	1,991,400	$86,725,470
TECK	Teck Resources Ltd	1,393,516	$66,735,481
PDD	PDD Holdings Inc.	306,641	$34,770,022
PAGS	PagSeguro Digital Ltd.	3,365,400	$32,442,456
JBS	Jbs N.V.	985,106	$14,205,228
UWMC	UWM Holdings Corp	2,204,100	$9,653,958
No positions match the current search.

Portfolio Positions

Compact Export CSV View 13F filing

44 tracked positions · $3,073,578,535 total · filing declares 44 positions · $3,073,484,583 · as of Mar 31, 2026

All sectors Basic Materials Consumer Cyclical Consumer Defensive Financial Services Healthcare Industrials Technology

Ticker	Company	Type	Shares	Δ Shares	Value (USD)	% Δ Value	% of Portfolio
WDC	Western Digital Corp Technology	Reduced	1,400,434	-981,091	$378,803,392	−7.7%	12.32%
EQX	Equinox Gold Corp. Basic Materials	Reduced	19,424,648	-809,400	$280,880,410	−1.1%	9.14%
STX	Seagate Technology Holdings plc Technology	Reduced	533,985	-131,867	$209,193,963	+14.1%	6.81%
CLF	Cleveland-Cliffs Inc. Basic Materials	Added	20,745,557	+8,387,327	$175,299,956	+6.8%	5.70%
TFII	TFI International Inc. Industrials	NEW	1,361,831	NEW	$147,935,701	NEW	4.81%
BKD	Brookdale Senior Living Inc. Healthcare	Reduced	8,157,148	-339,900	$111,589,784	+21.7%	3.63%
SNDK	Sandisk Corp Technology	Reduced	166,500	-321,800	$105,784,110	−8.7%	3.44%
BTI	British American Tobacco p.l.c. Consumer Defensive	Reduced	1,589,100	-66,200	$92,914,677	−0.9%	3.02%
JD	JD.com, Inc. Consumer Cyclical	Added	3,026,262	+1,106,100	$89,486,567	+62.4%	2.91%
LPX	Louisiana-Pacific Corp Industrials	Added	1,112,559	+523,691	$80,938,667	+70.2%	2.63%
CVS	CVS HEALTH Corp Healthcare	Added	1,048,100	+231,700	$75,274,542	+16.2%	2.45%
MT	ArcelorMittal Basic Materials	Reduced	1,414,265	-216,335	$73,513,494	−1.1%	2.39%
AAP	Advance Auto Parts Inc Consumer Cyclical	Reduced	1,298,140	-54,100	$68,476,885	+28.9%	2.23%
ASTL	Algoma Steel Group Inc. Basic Materials	Added	15,930,818	+1,500,000	$65,794,278	+11.2%	2.14%
XPO	XPO, Inc. Industrials	NEW	320,242	NEW	$62,303,081	NEW	2.03%
LKQ	Lkq Corp Consumer Cyclical	Added	2,065,565	+1,018,465	$60,665,644	+91.8%	1.97%
AA	Alcoa Corp Basic Materials	Reduced	903,320	-2,359,980	$59,917,215	−65.4%	1.95%
HUM	Humana Inc Healthcare	Added	344,800	+172,100	$59,784,872	+35.2%	1.95%
UNH	Unitedhealth Group Inc Healthcare	Added	215,400	+160,400	$58,285,086	+221.0%	1.90%
LYFT	Lyft, Inc. Technology	Reduced	4,124,703	-171,900	$54,858,549	−34.1%	1.78%
WAB	Westinghouse Air Brake Technologies Corp Industrials	NEW	215,400	NEW	$53,830,614	NEW	1.75%
ASO	Academy Sports & Outdoors, Inc. Consumer Cyclical	NEW	840,000	NEW	$47,418,000	NEW	1.54%
RKT	Rocket Companies, Inc. Financial Services	Added	3,133,200	+1,313,700	$44,648,100	+26.7%	1.45%
NGVT	Ingevity Corp Basic Materials	Reduced	603,303	-71,413	$42,973,272	+7.6%	1.40%
RUN	Sunrun Inc. Technology	Reduced	3,002,100	-2,320,848	$40,708,476	−58.4%	1.32%
ARCB	Arcbest Corp /De/ Industrials	Added	404,346	+260,596	$39,771,472	+272.9%	1.29%
GT	Goodyear Tire & Rubber Co /Oh/ Consumer Cyclical	Added	5,817,063	+1,844,517	$38,567,127	+10.8%	1.25%
TPB	Turning Point Brands, Inc. Consumer Defensive	Added	436,000	+36,700	$37,840,440	−12.6%	1.23%
ICLR	Icon PLC Healthcare	NEW	335,300	NEW	$37,104,298	NEW	1.21%
BTG	B2gold Corp Basic Materials	NEW	8,158,600	NEW	$36,958,458	NEW	1.20%
THO	Thor Industries Inc Consumer Cyclical	Added	461,864	+291,100	$36,898,314	+110.5%	1.20%
WGO	Winnebago Industries Inc Consumer Cyclical	NEW	1,169,831	NEW	$36,253,062	NEW	1.18%
RYAM	Rayonier Advanced Materials Inc. Basic Materials	NEW	3,256,889	NEW	$36,053,761	NEW	1.17%
LVS	Las Vegas Sands Corp Consumer Cyclical	Reduced	662,824	-718,023	$35,712,957	−60.3%	1.16%
WHR	Whirlpool Corp /De/ Consumer Cyclical	Added	593,200	+189,200	$31,985,344	+9.7%	1.04%
MOH	Molina Healthcare, Inc. Healthcare	Reduced	169,700	-56,500	$22,621,010	−42.4%	0.74%
CNC	Centene Corp Healthcare	Reduced	656,579	-354,620	$21,496,396	−48.3%	0.70%
KNX	Knight-Swift Transportation Holdings Inc. Industrials	NEW	366,095	NEW	$21,079,750	NEW	0.69%
NUE	Nucor Corp Basic Materials	NEW	117,212	NEW	$19,820,549	NEW	0.64%
FBIN	Fortune Brands Innovations, Inc. Industrials	NEW	485,782	NEW	$18,930,924	NEW	0.62%
ELV	Elevance Health, Inc. Healthcare	NEW	62,000	NEW	$18,150,500	NEW	0.59%
WERN	Werner Enterprises Inc Industrials	Reduced	553,367	-240,133	$16,274,523	−31.7%	0.53%
CAR	Avis Budget Group, Inc. Industrials	NEW	92,248	NEW	$13,454,370	NEW	0.44%
HCC	Warrior Met Coal, Inc. Basic Materials	Reduced	143,059	-1,494,179	$13,325,945	−90.8%	0.43%

Covers the securities this platform tracks: U.S.-listed common stock and the put/call positions reported on it. A 13F can also report security types outside that coverage — preferred shares, bonds, warrants, untracked share classes — so the filing's own declared total can exceed the figures above. The source filing is linked at the top of this table.