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Boundary Creek Advisors LP

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13F filer, CIK 1771944, TUCKAHOE, NY

Boundary Creek Advisors LP reported $456,699,784 across 8 holdings for the quarter ended 2025-06-30, in a 13F-HR filed 2025-08-12.

Filed (acceptance time not in the bulk data set), ingested 13F-HR 0001771944-25-000005

Period
2025-06-30
Reported value
$457M
Holdings
8
Top 10 weight
100%
New
2
Sold out
14

Largest buys vs the previous quarter

None.

Largest sells vs the previous quarter

SecurityShares changeApprox. value
KNXexited-358,779-$15.6M
SLSRreduced-2,436,469-$11.2M
LEUexited-173,786-$10.8M
MERCreduced-1,648,398-$5.77M
CEGexited-27,500-$5.54M

Ranked by the share change valued at this quarter's implied price (value over shares in the 13F). A position sold out is valued at the previous quarter's price, its last report.

Holdings, Q2 2025

Share positions as resolved from 13F-HR 0001771944-25-000005, largest first. % of portfolio is the value over $39,932,284, the sum of the share positions whose value is usable for ratios (method).

SecurityHistorySharesValue% of portfolioChangeLatest eventTimeline
SLSRSOLARIS RES INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 7,225,500 shares; 2024Q4: 7,185,900 shares; 2025Q1: 7,413,179 shares; 2025Q2: 4,976,710 shares 4,976,710$22.8M57.1%-2,436,469Timeline
MATVMATIV HOLDINGS INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 2,343,340 shares; 2024Q4: 2,321,405 shares; 2025Q1: 1,945,289 shares; 2025Q2: 1,313,984 shares 1,313,984$8.96M22.44%-631,305Timeline
MERCMERCER INTL INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 4,289,752 shares; 2024Q4: 4,236,054 shares; 2025Q1: 3,981,773 shares; 2025Q2: 2,333,375 shares 2,333,375$8.17M20.45%-1,648,398Timeline
VEEAWVEEA INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 28,083 shares; 2024Q4: 28,083 shares; 2025Q1: 28,083 shares; 2025Q2: 28,083 shares 28,083$3.82K0.01%0Timeline

Options

Puts and calls, as filed. The amount and value describe the underlying shares, not the option premium, so they stay out of % of portfolio (H5).

SecurityTypeAmountValueChange
SPYSTATE STR SPDR S&P 500 ETF T SHScall500,000$309Mnew
MPTMEDICAL PROPERTIES TRUST INC REITput22,500,000$97M-204,900
MATVMATIV HOLDINGS INC COMcall875,000$5.97M0
MERCMERCER INTL INC COMcall1,400,000$4.9Mnew

Sold out in Q2 2025

Positions in the previous quarter's report that this quarter's report no longer lists.

SecurityShares beforeValue beforeType
KNXKNIGHT-SWIFT TRANSN HLDGS IN1,000,000$43.5Mcall
EFAISHARES TR500,000$40.9Mput
VLOVALERO ENERGY CORP200,000$26.4Mcall
KNXKNIGHT-SWIFT TRANSN HLDGS IN358,779$15.6Mshares
LEUCENTRUS ENERGY CORP173,786$10.8Mshares
DXCDXC TECHNOLOGY CO500,000$8.53Mcall
CEGCONSTELLATION ENERGY CORP27,500$5.54Mshares
VLOVALERO ENERGY CORP40,000$5.28Mshares
VSTVISTRA CORP40,000$4.7Mshares
WOLFSPEED INCWOLFSPEED INC17,500,000$4Mprincipal
UISUNISYS CORP669,260$3.07Mshares
EUENCORE ENERGY CORP2,171,497$2.9Mshares
SLSRSOLARIS RES INC147,300$499Kcall
URBAN ONE INCURBAN ONE INC276,962$199Kshares

How Q2 2025 was built

Available 13F filings of this filer for the quarter and their roles: the base report is the latest original or restatement, NEW HOLDINGS amendments filed after it are added (method).

FilingRoleAmendmentFiledAcceptedIngested
13F-HR 0001771944-25-000005 base2025-08-12acceptance time not in the bulk data set