Maple Rock Capital Partners Inc.
13F Reported Value
ⓘ$5.1B
Holdings
51
Latest Filing
2026-06-30
Filing Quarter
Q2 2026
Portfolio Overview
Maple Rock Capital Partners Inc. disclosed 51 positions worth $5.1B in its Form 13F-HR for Q2 2026, led by $WDC (WESTERN DIGITAL CORP) at 17.0% of the equity portfolio, followed by $STX and $UNH. During the quarter the fund opened 11 new positions and exited 4 — including a new stake in $SW and a full exit from $GT. The portfolio is most concentrated in Healthcare (24.9% of disclosed assets). All figures are sourced directly from Maple Rock Capital Partners Inc.’s Form 13F-HR filing with the SEC under CIK 1658363.
AI Fund Analysis
DiversifyingSector Allocation
AUM History
Top Equity Holdings by Value
Quarterly Activity — Q2 2026
Click any card to unlockTop Holdings
- 80.7#24
Quality
$867.3M1,357,834 sh - —
Quality
$290.6M301,162 sh - 62.7#687
Quality
$283.1M681,100 sh - 58.9
Quality
$249.6M628,251 sh - —
Quality
$208.4M1,199,600 sh - —
Quality
$203.6M1,418,409 sh - —
Quality
$170.4M17,531,248 sh - 38.6
Quality
$150.6M2,421,040 sh - 44.1
Quality
$143.0M8,888,148 sh - 61.7
Quality
$136.8M614,000 sh
| Company | Quality | Value | Shares |
|---|---|---|---|
 WESTERN DIGITAL CORP$WDC | 80.7#24 | $867.3M | 1,357,834 |
 Seagate Technology Holdings plc$STX | — | $290.6M | 301,162 |
 UNITEDHEALTH GROUP INC$UNH | 62.7#687 | $283.1M | 681,100 |
 HUMANA INC$HUM | 58.9 | $249.6M | 628,251 |
 ICON PLC$ICLR | — | $208.4M | 1,199,600 |
 TFI International Inc.$TFII | — | $203.6M | 1,418,409 |
 Equinox Gold Corp.$EQX | — | $170.4M | 17,531,248 |
 ADVANCE AUTO PARTS INC$AAP | 38.6 | $150.6M | 2,421,040 |
 Brookdale Senior Living Inc.$BKD | 44.1 | $143.0M | 8,888,148 |
 NUCOR CORP$NUE | 61.7 | $136.8M | 614,000 |
Unlock AI quality scores for every holding
32-signal composite ranking on each of Maple Rock Capital Partners Inc.'s 51 positions.
Showing top 10 of 51 holdings.
Sector Allocation
Healthcare
$1.3B
Technology
$1.3B
Materials
$918.6M
Industrials
$821.4M
Consumer Discretionary
$500.8M
Consumer Staples
$192.0M
Financials
$87.3M
Utilities
$30.9M
Full Holdings — Maple Rock Capital Partners Inc. (Q2 2026)
All 51 disclosed positions from the latest Form 13F-HR, with quarter-over-quarter share changes and 13F Pro quality scores. Sourced from SEC EDGAR.
| # | Ticker | Company | Value | Weight | QoQ | Quality |
|---|---|---|---|---|---|---|
| 1 | $WDC | WESTERN DIGITAL CORP | $867.3M | 17.0% | -3% | 80.7 |
| 2 | $STX | Seagate Technology Holdings plc | $290.6M | 5.7% | -44% | — |
| 3 | $UNH | UNITEDHEALTH GROUP INC | $283.1M | 5.5% | +216% | 62.7 |
| 4 | $HUM | HUMANA INC | $249.6M | 4.9% | +82% | 58.9 |
| 5 | $ICLR | ICON PLC | $208.4M | 4.1% | +258% | — |
| 6 | $TFII | TFI International Inc. | $203.6M | 4.0% | +4% | — |
| 7 | $EQX | Equinox Gold Corp. | $170.4M | 3.3% | -10% | — |
| 8 | $AAP | ADVANCE AUTO PARTS INC | $150.6M | 3.0% | +87% | 38.6 |
| 9 | $BKD | Brookdale Senior Living Inc. | $143.0M | 2.8% | +9% | 44.1 |
| 10 | $NUE | NUCOR CORP | $136.8M | 2.7% | +424% | 61.7 |
| 11 |  $BTI | British American Tobacco p.l.c. | $133.8M | 2.6% | +36% | — |
| 12 |  $MT | ArcelorMittal | $131.9M | 2.6% | +55% | — |
| 13 |  $CVS | CVS HEALTH Corp | $123.9M | 2.4% | +14% | 59.4 |
| 14 |  $SW | Smurfit Westrock plc | $120.7M | 2.4% | NEW | — |
| 15 |  $LPX | LOUISIANA-PACIFIC CORP | $119.7M | 2.4% | +37% | 41.6 |
| 16 |  $CNC | CENTENE CORP | $88.7M | 1.7% | +110% | 58.2 |
| 17 |  $RKT | Rocket Companies, Inc. | $87.3M | 1.7% | +77% | 74.2 |
| 18 |  $AA | Alcoa Corp | $82.3M | 1.6% | +75% | 63.4 |
| 19 |  $ARCB | ARCBEST CORP /TX/ | $76.9M | 1.5% | +32% | 44.6 |
| 20 |  $ELV | Elevance Health, Inc. | $74.1M | 1.4% | +209% | 59 |
| 21 |  $XPO | XPO, Inc. | $72.4M | 1.4% | +10% | 58.4 |
| 22 |  $RXO | RXO, Inc. | $71.3M | 1.4% | NEW | 50.2 |
| 23 |  $ASTL | Algoma Steel Group Inc. | $68.3M | 1.3% | +6% | — |
| 24 |  $FDXF | FedEx Freight Holding Company, Inc. | $68.2M | 1.3% | NEW | — |
| 25 |  $JD | JD.com, Inc. | $68.0M | 1.3% | -12% | — |
| 26 |  $WERN | WERNER ENTERPRISES INC | $59.6M | 1.2% | +147% | 45.7 |
| 27 |  $TPB | Turning Point Brands, Inc. | $58.2M | 1.1% | +58% | 51.8 |
| 28 |  $WAB | WESTINGHOUSE AIR BRAKE TECHNOLOGIES CORP | $58.1M | 1.1% | +0% | 66.3 |
| 29 |  $MOS | MOSAIC CO | $56.8M | 1.1% | NEW | 39.2 |
| 30 |  $MOH | MOLINA HEALTHCARE, INC. | $55.6M | 1.1% | +43% | 56.5 |
| 31 |  $FBIN | Fortune Brands Innovations, Inc. | $54.7M | 1.1% | +105% | 49.2 |
| 32 |  $LKQ | LKQ CORP | $54.4M | 1.1% | +0% | 46.9 |
| 33 |  $RUN | Sunrun Inc. | $49.4M | 1.0% | +23% | 56.3 |
| 34 |  $WGO | WINNEBAGO INDUSTRIES INC | $48.7M | 1.0% | +33% | 46.8 |
| 35 |  $RMBS | RAMBUS INC | $45.5M | 0.9% | NEW | 70.2 |
| 36 |  $NGVT | Ingevity Corp | $45.0M | 0.9% | +0% | 53.1 |
| 37 |  $GPK | GRAPHIC PACKAGING HOLDING CO | $43.3M | 0.8% | NEW | 49 |
| 38 |  $TECK | TECK RESOURCES LTD | $42.7M | 0.8% | NEW | — |
| 39 |  $GM | General Motors Co | $38.5M | 0.8% | NEW | 54.3 |
| 40 |  $THO | THOR INDUSTRIES INC | $34.7M | 0.7% | +0% | 47.4 |
| 41 |  $TLN | Talen Energy Corp | $30.9M | 0.6% | NEW | 57.2 |
| 42 |  $LVS | LAS VEGAS SANDS CORP | $30.6M | 0.6% | +0% | 70.7 |
| 43 |  $LYFT | Lyft, Inc. | $30.1M | 0.6% | -50% | 72.8 |
| 44 |  $CLF | CLEVELAND-CLIFFS INC. | $29.0M | 0.6% | -85% | 38.3 |
| 45 |  $KNX | Knight-Swift Transportation Holdings Inc. | $28.5M | 0.6% | +0% | 54.4 |
| 46 |  $ASO | Academy Sports & Outdoors, Inc. | $27.6M | 0.5% | -30% | 51.2 |
| 47 |  $AMZN | AMAZON COM INC | $25.7M | 0.5% | NEW | 68.7 |
| 48 |  $RYAM | RAYONIER ADVANCED MATERIALS INC. | $25.6M | 0.5% | +0% | 31.5 |
| 49 |  $HCC | WARRIOR MET COAL, INC. | $20.6M | 0.4% | +77% | 52.5 |
| 50 |  $IP | INTERNATIONAL PAPER CO /NEW/ | $10.8M | 0.2% | NEW | 52.1 |
| 51 |  $SNDK | Sandisk Corp | $4.3M | 0.1% | -99% | 87.7 |
New Positions (11)
$SW Smurfit Westrock plc$120.7M$RXO RXO, Inc.$71.3M$FDXF FedEx Freight Holding Company, Inc.$68.2M$MOS MOSAIC CO$56.8M$RMBS RAMBUS INC$45.5M$GPK GRAPHIC PACKAGING HOLDING CO$43.3M$TECK TECK RESOURCES LTD$42.7M$GM General Motors Co$38.5M$TLN Talen Energy Corp$30.9M$AMZN AMAZON COM INC$25.7M$IP INTERNATIONAL PAPER CO /NEW/$10.8M
Browse Top Institutional Investors
13F Pro tracks 8,700+ institutional investors filing 13F reports with the SEC.
to search all 8,700+ institutional filers.
Available Analysis
13F Pro tracks comprehensive institutional data for Maple Rock Capital Partners Inc. including:
Track Maple Rock Capital Partners Inc.'s Full Portfolio
See every holding, quarter-over-quarter changes, sector allocation, and accumulation patterns for Maple Rock Capital Partners Inc. and 8,700+ other institutional investors.
Free tier includes full 13F search and fund profiles. Pro starts at $6.67/mo (billed annually).
AI-Powered Hedge Fund Analysis: Maple Rock Capital Partners Inc.
13F Pro is an AI hedge fund tracker and stock research platform. For Maple Rock Capital Partners Inc. (SEC CIK: 1658363), the platform ingests every quarterly Form 13F filing and applies AI-powered analysis on top — 10 specialized AI analysts (value, growth, momentum, macro, activist, and more) debate the fund's top positions and publish AI-generated analysis with cited SEC sources.
Every holding in Maple Rock Capital Partners Inc.'s portfolio is scored on a 32-signal AI quality ranking (ROIC, FCF margin, revenue growth, institutional flow, earnings quality, shareholder dilution, and more). Track accumulation and distribution quarter over quarter, identify conviction positions, and see AI stock analysis for each position — alongside 8,700+ other institutional filers and 2,800+ AI-ranked companies.