Maple Rock Capital Partners Inc.

Toronto, A6 · CIK 1658363 · 13F filing filed 2026-08-14

SEC-registered investment adviser since 2015 · corporation

Assets managed$6.3bn
Staff16 · 10 in investment roles
Main clients (by assets)Private funds 100%
Private funds1 (1 hedge) · $6.3bn gross assets
Websitemaplerockpartners.com
Form ADV · 2026-03-31SEC adviser record

Legal entityMAPLE ROCK CAPITAL PARTNERS INC. (CA)

$5.1bn reported value +65.9% vs Q1 2026

51positions

53.0%in top 10

11 new 25 added 8 reduced 4 sold out vs Q1 2026

Holdings, Q2 2026

The small lines show how much was held over the last 4 quarters (adjusted for stock splits).

#	Security	Ticker	Shares	Value	% of portfolio	Change	Shares change
1	WESTERN DIGITAL CORP COM WDC	WDC	1,357,834	$867.3m17.01%	17.01%	Reduced -42.6k	-42,600 -3.0%
2	SEAGATE TECHNOLOGY HLDNGS PL ORD SHS STX	STX	301,162	$290.6m5.70%	5.70%	Reduced -232.8k	-232,823 -43.6%
3	UNITEDHEALTH GROUP INC COM UNH	UNH	681,100	$283.1m5.55%	5.55%	Added +465.7k	+465,700 216.2%
4	HUMANA INC COM HUM	HUM	628,251	$249.6m4.89%	4.89%	Added +283.5k	+283,451 82.2%
5	ICON PLC SHS ICLR	ICLR	1,199,600	$208.4m4.09%	4.09%	Added +864.3k	+864,300 257.8%
6	TFI INTL INC COM TFII	TFII	1,418,409	$203.6m3.99%	3.99%	Added +56.6k	+56,578 4.2%
7	EQUINOX GOLD CORP COM EQX	EQX	17,531,248	$170.4m3.34%	3.34%	Reduced -1.9m	-1,893,400 -9.8%
8	ADVANCE AUTO PARTS INC COM AAP	AAP	2,421,040	$150.6m2.95%	2.95%	Added +1.1m	+1,122,900 86.5%
9	BROOKDALE SR LIVING INC COM BKD	BKD	8,888,148	$143.0m2.80%	2.80%	Added +731.0k	+731,000 9.0%
10	NUCOR CORP COM NUE	NUE	614,000	$136.8m2.68%	2.68%	Added +496.8k	+496,788 423.8%
11	BRITISH AMERN TOB PLC SPONSORED ADR BTI	BTI	2,166,000	$133.8m2.62%	2.62%	Added +576.9k	+576,900 36.3%
12	ARCELORMITTAL SA LUXEMBOURG NY REGISTRY SH MT	MT	2,190,860	$131.9m2.59%	2.59%	Added +776.6k	+776,595 54.9%
13	CVS HEALTH CORP COM CVS	CVS	1,197,996	$123.9m2.43%	2.43%	Added +149.9k	+149,896 14.3%
14	SMURFIT WESTROCK PLC SHS SW	SW	2,608,298	$120.7m2.37%	2.37%	New
15	LOUISIANA PAC CORP COM LPX	LPX	1,521,859	$119.7m2.35%	2.35%	Added +409.3k	+409,300 36.8%
16	CENTENE CORP DEL COM CNC	CNC	1,381,879	$88.7m1.74%	1.74%	Added +725.3k	+725,300 110.5%
17	ROCKET COS INC COM CL A RKT	RKT	5,543,600	$87.3m1.71%	1.71%	Added +2.4m	+2,410,400 76.9%
18	ALCOA CORP COM AA	AA	1,577,720	$82.3m1.61%	1.61%	Added +674.4k	+674,400 74.7%
19	ARCBEST CORP COM ARCB	ARCB	535,746	$76.9m1.51%	1.51%	Added +131.4k	+131,400 32.5%
20	ELEVANCE HEALTH INC COM ELV	ELV	191,500	$74.1m1.45%	1.45%	Added +129.5k	+129,500 208.9%
21	XPO INC COM XPO	XPO	352,702	$72.4m1.42%	1.42%	Added +32.5k	+32,460 10.1%
22	RXO INC COMMON STOCK RXO	RXO	2,583,655	$71.3m1.40%	1.40%	New
23	ALGOMA STL GROUP INC COM ASTL	ASTL	16,861,818	$68.3m1.34%	1.34%	Added +931.0k	+931,000 5.8%
24	FEDEX FGHT HLDG CO INC COMMON STOCK FDXF	FDXF	451,700	$68.2m1.34%	1.34%	New
25	JD.COM INC SPON ADS CL A JD	JD	2,670,542	$68.0m1.33%	1.33%	Reduced -355.7k	-355,720 -11.8%
26	WERNER ENTERPRISES INC COM WERN	WERN	1,366,167	$59.6m1.17%	1.17%	Added +812.8k	+812,800 146.9%
27	TURNING PT BRANDS INC COM TPB	TPB	686,800	$58.2m1.14%	1.14%	Added +250.8k	+250,800 57.5%
28	WABTEC COM WAB	WAB	215,400	$58.1m1.14%	1.14%	Unchanged
29	MOSAIC CO NEW COM MOS	MOS	2,680,000	$56.8m1.11%	1.11%	New
30	MOLINA HEALTHCARE INC COM MOH	MOH	243,300	$55.6m1.09%	1.09%	Added +73.6k	+73,600 43.4%
31	FORTUNE BRANDS INNOVATIONS I COM FBIN	FBIN	996,282	$54.7m1.07%	1.07%	Added +510.5k	+510,500 105.1%
32	LKQ CORP COM LKQ	LKQ	2,065,565	$54.4m1.07%	1.07%	Unchanged
33	SUNRUN INC COM RUN	RUN	3,694,548	$49.4m0.97%	0.97%	Added +692.4k	+692,448 23.1%
34	WINNEBAGO INDS INC COM WGO	WGO	1,559,231	$48.7m0.96%	0.96%	Added +389.4k	+389,400 33.3%
35	RAMBUS INC DEL COM RMBS	RMBS	342,600	$45.5m0.89%	0.89%	New
36	INGEVITY CORP COM NGVT	NGVT	603,303	$45.0m0.88%	0.88%	Unchanged
37	GRAPHIC PACKAGING HLDG CO COM GPK	GPK	4,099,800	$43.3m0.85%	0.85%	New
38	TECK RESOURCES LTD CL B TECK	TECK	718,500	$42.7m0.84%	0.84%	New
39	GENERAL MTRS CO COM GM	GM	499,497	$38.5m0.75%	0.75%	New
40	THOR INDS INC COM THO	THO	461,864	$34.7m0.68%	0.68%	Unchanged
41	TALEN ENERGY CORP COM TLN	TLN	80,300	$30.9m0.61%	0.61%	New
42	LAS VEGAS SANDS CORP COM LVS	LVS	662,824	$30.6m0.60%	0.60%	Unchanged
43	LYFT INC CL A COM LYFT	LYFT	2,062,351	$30.1m0.59%	0.59%	Reduced -2.1m	-2,062,352 -50.0%
44	CLEVELAND-CLIFFS INC NEW COM CLF	CLF	3,083,157	$29.0m0.57%	0.57%	Reduced -17.7m	-17,662,400 -85.1%
45	KNIGHT-SWIFT TRANSN HLDGS IN CL A KNX	KNX	366,095	$28.5m0.56%	0.56%	Unchanged
46	ACADEMY SPORTS & OUTDOORS IN COM ASO	ASO	586,400	$27.6m0.54%	0.54%	Reduced -253.6k	-253,600 -30.2%
47	AMAZON COM INC COM AMZN	AMZN	108,000	$25.7m0.50%	0.50%	New
48	RAYONIER ADVANCED MATLS INC COM RYAM	RYAM	3,256,889	$25.6m0.50%	0.50%	Unchanged
49	WARRIOR MET COAL INC COM HCC	HCC	253,559	$20.6m0.40%	0.40%	Added +110.5k	+110,500 77.2%
50	INTERNATIONAL PAPER CO COM IP	IP	284,400	$10.8m0.21%	0.21%	New
51	SANDISK CORP COM SNDK	SNDK	1,906	$4.3m0.08%	0.08%	Reduced -164.6k	-164,594 -98.9%

Sold out since Q1 2026

Security	Ticker	Shares held before	Value then
GOODYEAR TIRE & RUBR CO GT	GT	5,817,063	$38.6m5.8m shares
B2GOLD CORP BTG	BTG	8,158,600	$37.0m8.2m shares
WHIRLPOOL CORP WHR	WHR	593,200	$32.0m593.2k shares
AVIS BUDGET GROUP CAR	CAR	92,248	$13.5m92.2k shares

Stakes above 5%

Companies where this manager has reported owning more than 5% of a class of shares, on Schedule 13D (may seek influence) or 13G (passive): its latest filing for each, from 19 Dec 2024 on.

Company	Ticker	Stake	Change	Schedule	Last filed
ALGOMA STL GROUP INC ASTL · 13G · filed 2026-05-15	ASTL	15.1%≈ $64.5m	+1.8 pts	13G	2026-05-15
WINNEBAGO INDS INC WGO · 13G · filed 2026-08-14	WGO	5.5%≈ $48.7m	new	13G	2026-08-14