Stocks/Funds/CIK 1658363

Maple Rock Capital Partners Inc.

long-term holder
Quarterly 13F filings · Latest period 2026-03-31 · CIK 1658363
Assets
$3.07B
+124.4% YoY
Holdings
44
Lifetime alpha vs market
+10.14% annual
Average hold time
1.6 yr
median 1.3 yr

Quarterly history

Cum return +124% vs S&P +52% · α +72% lifetimeAUM $3.1B · peak $3.1BFlow $-366M (-12%)2016-032017-092019-062020-122022-062023-122025-062026-03
AUM ($B)fundS&P 500(gap = α)/ Flow in/out

Behavior signals (lifetime)

Dip response
+1.01%
adds when stocks drop
when a holding falls −10%+
Middle response
+1.60%
steady accumulation
Rally response
-9.27%
trims into rallies
when a holding rises +10%+

Top positions · 30

Ticker$ value% portYoYHold time
WDCWestern Digital Corporat$379M12.3%+571.9%8.3 yr
EQXEquinox Gold Corp.$281M9.1%+110.2%2.3 yr
STXSeagate Technology Holdi$209M6.8%+366.3%2.0 yr
CLFCleveland-Cliffs Inc.$175M5.7%+2.8%1.3 yr
TFIITFI International Inc.$148M4.8%+42.3%3.3 yr
BKDBrookdale Senior Living $112M3.6%+118.5%1.0 yr
SNDKSandisk Corporation$106M3.4%+1234.5%1.3 yr
BTIBritish American Tobacco$93M3.0%+47.5%1.0 yr
JDJD.com, Inc.$89M2.9%-28.5%3.3 yr
LPXLouisiana-Pacific Corpor$81M2.6%-19.9%1.8 yr
CVSCVS Health Corporation$75M2.4%+10.0%0.5 yr
MTArcelorMittal S.A.$74M2.4%+83.0%1.3 yr
AAPAdvance Auto Parts, Inc.$68M2.2%+37.1%1.8 yr
ASTLAlgoma Steel Group Inc.$66M2.1%-23.2%4.5 yr
XPOXPO Logistics, Inc.$62M2.0%+80.8%0.3 yr

Portfolio composition (YoY)

Industry mix
Computer Hardware19.1%+5.9pp$588M
Steel10.9%+8.1pp$334M
Gold10.3%+6.8pp$318M
Medical - Healthcare Plans8.3%+6.1pp$256M
Trucking7.3%+0.9pp$225M
Specialty Retail6.7%-9.9pp$205M
Tobacco4.3%$131M
Medical - Care Facilities3.6%$112M
Hardware, Equipment & Parts3.4%+2.6pp$106M
Auto - Parts3.2%+1.2pp$99M
Country
US66.4%+6.0pp
CA17.3%-0.8pp
SG6.8%+3.0pp
GB3.0%
CN2.9%-9.9pp
LU2.4%
IE1.2%-3.8pp
Top 5: 38.8% · Top 10: 54.4% · Top 25: 82.7%

Winners

TickerPrev $PnLYoY %
WDC$129M+0.73B571.9%
STX$52M+0.19B366.3%
SNDK$12M+0.15B1234.5%
EQX$49M+0.05B110.2%
TFII$88M+0.04B42.3%

Losers

TickerPrev $PnLYoY %
JD$38M-0.01B-28.5%
HUM$30M-0.01B-33.8%
ASTL$38M-0.01B-23.2%
GT$16M-0.00B-28.2%
LKQ$11M-0.00B-28.4%

Top buys this quarter · 15

CLF Cleveland-Cliffs Inc.+$71M
XPO XPO Logistics, Inc.new+$62M
WAB Westinghouse Air Brake Technolnew+$54M
ASO Academy Sports and Outdoors, Inew+$47M
UNH UnitedHealth Group Incorporate+$43M
LPX Louisiana-Pacific Corporation+$38M
ICLR ICON Public Limited Companynew+$37M
BTG B2Gold Corp.new+$37M
RYAM Rayonier Advanced Materials Innew+$36M
JD JD.com, Inc.+$32M

Top sells this quarter · 15

WDC Western Digital Corporation$265M
SNDK Sandisk Corporation$204M
AA Alcoa Corporation$157M
HCC Warrior Met Coal, Inc.$139M
SEE Sealed Air Corporationexit$89M
B Barrick Mining Corporationexit$81M
TECK Teck Resources Limitedexit$72M
STX Seagate Technology Holdings pl$183M
CAR Avis Budget Group, Inc.$47M
LVS Las Vegas Sands Corp.$39M

Quarterly history (TTM returns)

PeriodAUM# PosReturn (1yr)SPY (1yr)Alpha (1yr)Flow
2026-03-31$3.07B44+106.68%+17.59%+89.09%-0.37B
2025-12-31$3.03B38+68.84%+17.72%+51.12%+0.17B
2025-09-30$2.48B40+38.55%+17.52%+21.03%-0.19B
2025-06-30$2.00B39+21.11%+14.94%+6.17%+0.38B
2025-03-31$1.37B35+1.92%+8.30%-6.38%+0.09B
2024-12-31$1.37B29+19.51%+24.89%-5.38%-0.29B
2024-09-30$1.76B28+41.96%+36.04%+5.92%+0.06B
2024-06-30$1.46B27+25.98%+24.49%+1.49%-0.11B
2024-03-31$1.58B29+17.30%+29.62%-12.32%+0.19B
2023-12-31$1.28B27+17.01%+26.18%-9.17%+0.31B
2023-09-30$859M23+9.44%+21.57%-12.13%+0.05B
2023-06-30$785M20-1.11%+19.42%-20.53%-0.16B
2023-03-31$1.02B27-9.38%-7.82%-1.56%+0.28B
2022-12-31$679M19+5.13%+7.56%-2.43%-0.46B
2022-09-30$1.08B26-6.51%-4.93%-1.59%+0.27B
2022-06-30$866M22-15.07%-16.11%+1.04%+0.10B