Maple Rock Capital Partners Inc.

CIK 0001658363 · TORONTO, A6 · Quarter end: 2026-06-30 · Filed on: 2026-08-14 · Open the SEC source

Maple Rock Capital Partners Inc. reported 51 positions worth $5.10B as of June 30, 2026 (13F filed August 14, 2026). Largest holding: WDC (17.0%).

Portfolio Value (AUM)Total value of the fund's US stock portfolio reported to the SEC.
$5.10B
2026 Q2
Positions
51
Top-10 ConcentrationHow much of the portfolio sits in the 10 largest holdings. High = concentrated bets.
53.0%
Est. Net Flow (Q)
2026 Q2
10 / 51 positions shown
#SymbolCompanyTypeValue% Port.Shares1YYTD
1WDCWESTERN DIGITAL CORPSH$867.3M17.01%1,357,834
2STXSEAGATE TECHNOLOGY HLDNGS PLSH$290.6M5.70%301,162
3UNHUNITEDHEALTH GROUP INCSH$283.1M5.55%681,100
4HUMHUMANA INCSH$249.6M4.89%628,251
5ICLRICON PUB LTD COSH$208.4M4.09%1,199,600
6TFIITFI INTERNATIONAL INCSH$203.6M3.99%1,418,409
7EQXEQUINOX GOLD CORPSH$170.4M3.34%17,531,248
8AAPADVANCE AUTO PARTS INCSH$150.6M2.95%2,421,040
9BKDBROOKDALE SR LIVING INCSH$143.0M2.80%8,888,148
10NUENUCOR CORPSH$136.8M2.68%614,000

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Read the 2026-Q2 quarterly report · 13F Filing Calendar

Frequently Asked Questions

What stocks does Maple Rock Capital Partners Inc. hold as of Q2 2026?

Maple Rock Capital Partners Inc. reported 51 positions worth $5.10B in its Q2 2026 13F filing. Largest positions: WDC (17.0%), STX (5.7%), UNH (5.6%), HUM (4.9%) and ICLR (4.1%).

What did Maple Rock Capital Partners Inc. buy in Q2 2026?

No previous quarter is available yet; the comparison appears with the next filing.

What did Maple Rock Capital Partners Inc. sell in Q2 2026?

No previous quarter is available yet.

13F data shows quarter-end positions, is delayed by up to 45 days and covers only long positions in US-listed securities; short positions, most derivatives and non-US assets are not reported.