Maple Rock Capital Partners Inc.

CIK

1658363

Location

Toronto, A6

Portfolio Value

Small $789,348,490

Diversification

Diversified

Filing Date

Global Rank

#915 / 8,588 ▲ 20

Top Industry

Computer Hardware 22.6%

3Y Alpha vs SPY

+25.4%

Period ended 3 months ago

Filed May 15, 2026 · 33d

25 quarters · since Mar 2020

Clone Performance

Jun 2023–Jun 2026 · vs SPY

Hypothetical growth of cloning every reported 13F position and rebalancing on each filing, indexed to the same start.

Cloned portfolio

+213.3%

SPY

+76.8%

Annualised alpha

+25.4%

Max drawdown

−29.9%

Estimate. 13F holdings are quarter-lagged and long-only, so the clone rebalances about 45 days after each period end — when the filing becomes public — and excludes options and short positions. Past performance does not predict future results.

Portfolio Concentration

44 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

5 positions · $789,348,490 total · Technology only · 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%	47.99%
STX	Seagate Technology Holdings plc Technology	Reduced	533,985	-131,867	$209,193,963	+14.1%	26.50%
SNDK	Sandisk Corp Technology	Reduced	166,500	-321,800	$105,784,110	−8.7%	13.40%
LYFT	Lyft, Inc. Technology	Reduced	4,124,703	-171,900	$54,858,549	−34.1%	6.95%
RUN	Sunrun Inc. Technology	Reduced	3,002,100	-2,320,848	$40,708,476	−58.4%	5.16%