Maple Rock Capital Partners Inc.

Registered adviser

CIK

1658363

Location

Toronto, A6

Portfolio Value

Mid $5,099,994,953

Diversification

Diversified

Filing Date

Global Rank

#878 / 8,818 ▲ 237

Top Industry

Computer Hardware 22.8%

Period ended 4 months ago

Filed Aug 14, 2026 · 3mo

26 quarters · since Mar 2020

Regulatory profile

From Form ADV, the SEC filer profile, 13D/13G type codes and N-CEN, never from the name.

Holder type

Registered adviser

Form ADV roster, Oct 1, 2026

Form ADV adviser

CRD 173887

Roster of Oct 1, 2026

Regulatory AUM

$6,340,993,380

Main clients

Pooled investment vehicles (100% of AUM)

Private funds

1 fund · Hedge funds

Focus by fund count, roster of Oct 1, 2026

$6,340,993,380 gross assets

LEI

549300DHAG8DBBHSYW02

Private funds on Schedule D 7.B.(1)

As filed Mar 27, 2024; SEC's bulk Form ADV archive ends with 2024 filings.

$2,428,438,320 gross assets in 1 fund Hedge funds $2,428,438,320 (1)

Form ADV history

Monthly rosters from Dec 2019; each row is a run with the same figures, newest first.

Rosters	Regulatory AUM	Main clients
Apr 2026 to Oct 2026	$6,340,993,380	Pooled investment vehicles (100%)
Mar 2025 to Mar 2026	$3,491,460,203	Pooled investment vehicles (100%)
Apr 2024 to Feb 2025	$2,428,438,320	Pooled investment vehicles (100%)
May 2023 to Mar 2024	$2,328,921,153	Pooled investment vehicles (100%)
Apr 2023	$2,328,921,153	Pooled investment vehicles (100%)
Mar 2022 to Mar 2023	$1,963,490,830	Pooled investment vehicles (100%)

3 earlier changes not shown.

Portfolio style

Measured from the filed 13F common-share book for Jun 30, 2026, never from the firm's own description.

Style

Diversified active

Top 10 weight 53.0%, 19.4 effective positions, active share 94.8% against the Dow Jones Industrial Average as of 2026-07-31; it meets none of the index-like, systematic-like or concentrated tests

Turnover

Medium turnover

97.3% over the last four quarters (30% to under 100%)

Horizon

Horizon unknown

The value-weighted holding period is at least 8.4 quarters, but 17.0% of the book was already held when coverage starts

Closest benchmark: the Dow Jones Industrial Average as of 2026-07-31, active share 94.8%; sector active share 40.1% against the combined 13F book's sector weights.

Over time 26 measured quarters

How the bands are measured

Style bands measure the filed 13F common-share book each closed quarter, tested in this order. Unknown: under $10,000,000 of valued equity or 5 stocks. Index-like (100+ stocks): active share of 20% or less against the closest benchmark, which is the S&P 500, S&P MidCap 400, S&P SmallCap 600, Russell 1000, Russell 2000, Nasdaq-100 or Dow Jones Industrial Average (weighted by an index-tracking fund's reported holdings or the index's constituents nearest the quarter end, over the names resolved to companies, and only when those are 90%+ of its weight) or every 13F filer's combined book, or index series holding 80%+ of the registered fund assets it advises (N-CEN) and equal to 50%+ of its book. Systematic-like: 500+ stocks, 100%+ annual turnover and a top 10 weight of 25% or less. Concentrated: a top 10 weight of 60%+ or 12 or fewer effective positions. Diversified active: none of these. Turnover is the smaller of buys and sells over average equity value, summed over four quarters: low under 30%, high 100%+. Horizon is the value-weighted number of quarters each position has been held: short under 4, long 12+.

Clone Performance

Build a hypothetical price-return history from this filer's public 13F holdings.

View clone backtest

Portfolio Concentration

51 tracked positions · as of Jun 30, 2026 · Δ vs Mar 31, 2026

Top Position

17.0%

+4.7 pts

Top 5

37.2%

−1.6 pts

Top 10

53.0%

−1.4 pts

HHI

514

Diversified+55

Portfolio Trend

26 quarters · across all stocks

Sector Breakdown

As of Jun 30, 2026

Sector	% Portfolio	Value	Positions
Technology	25.2%	$1,287,271,515	6
Healthcare	24.0%	$1,226,369,276	8
Industrials	15.9%	$813,001,402	10
Basic Materials	15.9%	$809,347,185	11
Consumer Cyclical	12.8%	$653,818,129	12
Consumer Defensive	3.8%	$192,019,668	2
Financial Services	1.7%	$87,311,700	1
Utilities	0.6%	$30,856,078	1

Last Quarter's Activity

Export CSV

Jun 30, 2026 vs Mar 31, 2026

Added To

Positions the filer increased

25 positions

Ticker	Company	Δ Shares	Shares	Value
RKT	Rocket Companies, Inc.	+2,410,400	5,543,600	$87,311,700
AAP	Advance Auto Parts Inc	+1,122,900	2,421,040	$150,637,108
ASTL	Algoma Steel Group Inc.	+931,000	16,861,818	$68,290,362
ICLR	Icon PLC	+864,300	1,199,600	$208,382,516
WERN	Werner Enterprises Inc	+812,800	1,366,167	$59,578,542
MT	ArcelorMittal	+776,595	2,190,860	$131,933,589
BKD	Brookdale Senior Living Inc.	+731,000	8,888,148	$143,010,301
CNC	Centene Corp	+725,300	1,381,879	$88,702,813
RUN	Sunrun Inc.	+692,448	3,694,548	$49,433,052
AA	Alcoa Corp	+674,400	1,577,720	$82,262,320
BTI	British American Tobacco p.l.c.	+576,900	2,166,000	$133,772,160
FBIN	Fortune Brands Innovations, Inc.	+510,500	996,282	$54,695,881
NUE	Nucor Corp	+496,788	614,000	$136,768,500
UNH	Unitedhealth Group Inc	+465,700	681,100	$283,085,593
LPX	Louisiana-Pacific Corp	+409,300	1,521,859	$119,709,428
WGO	Winnebago Industries Inc	+389,400	1,559,231	$48,710,376
HUM	Humana Inc	+283,451	628,251	$249,553,862
TPB	Turning Point Brands, Inc.	+250,800	686,800	$58,247,508
CVS	CVS HEALTH Corp	+149,896	1,197,996	$123,932,686
ARCB	Arcbest Corp	+131,400	535,746	$76,900,980
ELV	Elevance Health, Inc.	+129,500	191,500	$74,058,795
HCC	Warrior Met Coal, Inc.	+110,500	253,559	$20,578,848
MOH	Molina Healthcare, Inc.	+73,600	243,300	$55,642,710
TFII	TFI International Inc.	+56,578	1,418,409	$203,640,980
XPO	XPO, Inc.	+32,460	352,702	$72,406,193
No positions match the current search.

Trimmed

Positions the filer reduced

8 positions

Ticker	Company	Δ Shares	Shares	Value
CLF	Cleveland-Cliffs Inc.	−17,662,400	3,083,157	$28,950,844
LYFT	Lyft, Inc.	−2,062,352	2,062,351	$30,130,948
EQX	Equinox Gold Corp.	−1,893,400	17,531,248	$170,403,730
JD	JD.com, Inc.	−355,720	2,670,542	$68,045,410
ASO	Academy Sports & Outdoors, Inc.	−253,600	586,400	$27,637,032
STX	Seagate Technology Holdings plc	−232,823	301,162	$290,621,330
SNDK	Sandisk Corp	−164,594	1,906	$4,333,729
WDC	Western Digital Corp	−42,600	1,357,834	$867,275,732
No positions match the current search.

New Positions

Positions the filer opened this quarter

11 positions

Ticker	Company	Shares	Value
SW	Smurfit Westrock plc	2,608,298	$120,659,865
RXO	RXO, Inc.	2,583,655	$71,283,041
FDXF	FedEx Freight Holding Company, Inc.	451,700	$68,206,700
MOS	Mosaic Co	2,680,000	$56,789,200
RMBS	Rambus Inc	342,600	$45,476,724
GPK	Graphic Packaging Holding Co	4,099,800	$43,334,886
TECK	Teck Resources Ltd	718,500	$42,722,010
GM	General Motors Co	499,497	$38,501,228
TLN	Talen Energy Corp	80,300	$30,856,078
AMZN	Amazon Com Inc	108,000	$25,740,720
IP	International Paper Co	284,400	$10,835,640
No positions match the current search.

Sold Out

Positions the filer fully exited

4 positions

Ticker	Company	Shares	Value
GT	Goodyear Tire & Rubber Co	5,817,063	$38,567,127
BTG	B2gold Corp	8,158,600	$36,958,458
WHR	Whirlpool Corp	593,200	$31,985,344
CAR	Avis Budget Group, Inc.	92,248	$13,454,370
No positions match the current search.

Portfolio Positions

Compact Export CSV View 13F filing

51 tracked positions · $5,099,994,953 total · filing declares 51 positions · $5,100,027,142 · as of Jun 30, 2026

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

Showing 1–50 of 51 positions by value · page 1 of 2

Ticker	Company	Type	Shares	Δ Shares	Value (USD)	% Δ Value	Held (qtrs)	Est. cost/share	% of Portfolio
WDC	Western Digital Corp Technology	Reduced	1,357,834	-42,600	$867,275,732	+129.0%	26+	before history	17.01%
STX	Seagate Technology Holdings plc Technology	Reduced	301,162	-232,823	$290,621,330	+38.9%	9	$98.38	5.70%
UNH	Unitedhealth Group Inc Healthcare	Added	681,100	+465,700	$283,085,593	+385.7%	4	$347.99	5.55%
HUM	Humana Inc Healthcare	Added	628,251	+283,451	$249,553,862	+317.4%	6	$257.65	4.89%
ICLR	Icon PLC Healthcare	Added	1,199,600	+864,300	$208,382,516	+461.6%	2	$129.90	4.09%
TFII	TFI International Inc. Industrials	Added	1,418,409	+56,578	$203,640,980	+37.7%	2	$112.96	3.99%
EQX	Equinox Gold Corp. Basic Materials	Reduced	17,531,248	-1,893,400	$170,403,730	−39.3%	10	$7.26	3.34%
AAP	Advance Auto Parts Inc Consumer Cyclical	Added	2,421,040	+1,122,900	$150,637,108	+120.0%	8	$56.21	2.95%
BKD	Brookdale Senior Living Inc. Healthcare	Added	8,888,148	+731,000	$143,010,301	+28.2%	5	$7.88	2.80%
NUE	Nucor Corp Basic Materials	Added	614,000	+496,788	$136,768,500	+590.0%	2	$216.39	2.68%
BTI	British American Tobacco p.l.c. Consumer Defensive	Added	2,166,000	+576,900	$133,772,160	+44.0%	5	$50.78	2.62%
MT	ArcelorMittal Basic Materials	Added	2,190,860	+776,595	$131,933,589	+79.5%	4	$45.36	2.59%
CVS	CVS HEALTH Corp Healthcare	Added	1,197,996	+149,896	$123,932,686	+64.6%	3	$79.79	2.43%
SW	Smurfit Westrock plc Consumer Cyclical	NEW	2,608,298	NEW	$120,659,865	NEW	1	$41.30	2.37%
LPX	Louisiana-Pacific Corp Industrials	Added	1,521,859	+409,300	$119,709,428	+47.9%	6	$83.93	2.35%
CNC	Centene Corp Healthcare	Added	1,381,879	+725,300	$88,702,813	+312.6%	4	$42.41	1.74%
RKT	Rocket Companies, Inc. Financial Services	Added	5,543,600	+2,410,400	$87,311,700	+95.6%	5	$15.02	1.71%
AA	Alcoa Corp Basic Materials	Added	1,577,720	+674,400	$82,262,320	+37.3%	3	$52.05	1.61%
ARCB	Arcbest Corp Industrials	Added	535,746	+131,400	$76,900,980	+93.4%	3	$97.10	1.51%
ELV	Elevance Health, Inc. Healthcare	Added	191,500	+129,500	$74,058,795	+308.0%	2	$357.20	1.45%
XPO	XPO, Inc. Industrials	Added	352,702	+32,460	$72,406,193	+16.2%	2	$182.22	1.42%
RXO	RXO, Inc. Industrials	NEW	2,583,655	NEW	$71,283,041	NEW	1	$22.08	1.40%
ASTL	Algoma Steel Group Inc. Basic Materials	Added	16,861,818	+931,000	$68,290,362	+3.8%	19	$6.82	1.34%
FDXF	FedEx Freight Holding Company, Inc. Industrials	NEW	451,700	NEW	$68,206,700	NEW	1	$163.79	1.34%
JD	JD.com, Inc. Consumer Cyclical	Reduced	2,670,542	-355,720	$68,045,410	−24.0%	14	$31.64	1.33%
WERN	Werner Enterprises Inc Industrials	Added	1,366,167	+812,800	$59,578,542	+266.1%	3	$33.53	1.17%
TPB	Turning Point Brands, Inc. Consumer Defensive	Added	686,800	+250,800	$58,247,508	+53.9%	5	$83.18	1.14%
WAB	Westinghouse Air Brake Technologies Corp Industrials	Held	215,400	0	$58,071,840	+7.9%	2	$241.77	1.14%
MOS	Mosaic Co Basic Materials	NEW	2,680,000	NEW	$56,789,200	NEW	1	$23.12	1.11%
MOH	Molina Healthcare, Inc. Healthcare	Added	243,300	+73,600	$55,642,710	+146.0%	4	$174.44	1.09%
FBIN	Fortune Brands Innovations, Inc. Industrials	Added	996,282	+510,500	$54,695,881	+188.9%	2	$45.88	1.07%
LKQ	Lkq Corp Consumer Cyclical	Held	2,065,565	0	$54,386,326	−10.4%	6	$32.23	1.07%
RUN	Sunrun Inc. Technology	Added	3,694,548	+692,448	$49,433,052	+21.4%	11	$10.71	0.97%
WGO	Winnebago Industries Inc Consumer Cyclical	Added	1,559,231	+389,400	$48,710,376	+34.4%	2	$38.86	0.96%
RMBS	Rambus Inc Technology	NEW	342,600	NEW	$45,476,724	NEW	1	$130.04	0.89%
NGVT	Ingevity Corp Basic Materials	Held	603,303	0	$45,048,635	+4.8%	7	$41.85	0.88%
GPK	Graphic Packaging Holding Co Consumer Cyclical	NEW	4,099,800	NEW	$43,334,886	NEW	1	$10.20	0.85%
TECK	Teck Resources Ltd Basic Materials	NEW	718,500	NEW	$42,722,010	NEW	1	$60.95	0.84%
GM	General Motors Co Consumer Cyclical	NEW	499,497	NEW	$38,501,228	NEW	1	$78.57	0.75%
THO	Thor Industries Inc Consumer Cyclical	Held	461,864	0	$34,713,698	−5.9%	6	$97.08	0.68%
TLN	Talen Energy Corp Utilities	NEW	80,300	NEW	$30,856,078	NEW	1	$366.67	0.61%
LVS	Las Vegas Sands Corp Consumer Cyclical	Held	662,824	0	$30,615,840	−14.3%	7	$51.62	0.60%
LYFT	Lyft, Inc. Technology	Reduced	2,062,351	-2,062,352	$30,130,948	−45.1%	12	$13.65	0.59%
CLF	Cleveland-Cliffs Inc. Basic Materials	Reduced	3,083,157	-17,662,400	$28,950,844	−83.5%	5	$10.52	0.57%
KNX	Knight-Swift Transportation Holdings Inc. Industrials	Held	366,095	0	$28,507,817	+35.2%	2	$57.34	0.56%
ASO	Academy Sports & Outdoors, Inc. Consumer Cyclical	Reduced	586,400	-253,600	$27,637,032	−41.7%	2	$56.94	0.54%
AMZN	Amazon Com Inc Consumer Cyclical	NEW	108,000	NEW	$25,740,720	NEW	1	$251.01	0.50%
RYAM	Rayonier Advanced Materials Inc. Basic Materials	Held	3,256,889	0	$25,599,147	−29.0%	2	$9.02	0.50%
HCC	Warrior Met Coal, Inc. Basic Materials	Added	253,559	+110,500	$20,578,848	+54.4%	9	$74.20	0.40%
IP	International Paper Co Consumer Cyclical	NEW	284,400	NEW	$10,835,640	NEW	1	$34.25	0.21%

Showing the top 50 of 51 positions. Create a free account to see every position, past quarters, search, filters and CSV export.

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.