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Super Investors Boundary Creek Advisors LP
BC

Boundary Creek Advisors LP

Quarterly 13F snapshot: US-listed longs only, no performance figures — 13F data cannot support them.

Portfolio value
—
Positions
1
Quarter ended
June 30, 2026
Filed
August 14, 2026

Reported portfolio value by quarter (22 quarters reported)

$3.56B —
Q1 21 Q2 22 Q3 23 Q4 24 Q1 26 Q2 26

$90M in Q1 2021 → — now. Hover for any quarter.

Holdings

As reported for the quarter ended June 30, 2026. Activity is the change in share count since the prior quarter's filing.

Holding % of portfolio Activity Shares Value
N None NaN% New 0 —

Timeline of changes

What changed each quarter, from the filings' own share counts. Largest moves first; most recent 8 quarters.

Q2 2026

quarter ended June 30, 2026 · filed August 14, 2026

Company Action Shares changed Value of change % of portfolio
Global Business Travel Group Exited −2,735,449 −$15.3M —
N None New +0 — —

Q1 2026

quarter ended March 31, 2026 · filed May 15, 2026

No position changes this quarter.

Q4 2025

quarter ended December 31, 2025 · filed February 17, 2026

No position changes this quarter.

Q3 2025

quarter ended September 30, 2025 · filed November 07, 2025

Company Action Shares changed Value of change % of portfolio
SS SPDR S&P 500 ETF Tr Exited −500,000 −$309M —
MP Medical Pptys Trust Inc Exited −22,500,000 −$97M —
Global Business Travel Group New +2,735,449 +$22.9M 100.0%
SR Solaris Res Inc Exited −4,976,710 −$22.8M —
Mativ Holdings Inc Exited −1,313,984 −$8.96M —
MI Mercer Intl Inc Exited −2,333,375 −$8.17M —
Mativ Holdings Inc Exited −875,000 −$5.97M —
MI Mercer Intl Inc Exited −1,400,000 −$4.9M —
Veea Inc Exited −28,083 −$3.82K —

Q2 2025

quarter ended June 30, 2025 · filed August 12, 2025

Company Action Shares changed Value of change % of portfolio
SS SPDR S&P 500 ETF Tr New +500,000 +$309M 67.6%
KT Knight-swift Transn Hldgs In Exited −1,000,000 −$43.5M —
IT Ishares Tr Exited −500,000 −$40.9M —
Valero Energy Corp Exited −200,000 −$26.4M —
KT Knight-swift Transn Hldgs In Exited −358,779 −$15.6M —
SR Solaris Res Inc Trimmed −2,436,469 −$11.2M 5.0%
Centrus Energy Corp Exited −173,786 −$10.8M —
Dxc Technology Co Exited −500,000 −$8.53M —
MI Mercer Intl Inc Trimmed −1,648,398 −$5.77M 1.8%
Constellation Energy Corp Exited −27,500 −$5.54M —

Showing the 10 largest of 20 changes.

Q1 2025

quarter ended March 31, 2025 · filed May 16, 2025

Company Action Shares changed Value of change % of portfolio
IT Ishares Tr Exited −4,500,000 −$354M —
SS SPDR S&P 500 ETF Tr Exited −600,000 −$352M —
IT Ishares Tr Exited −1,000,000 −$221M —
SS Select Sector SPDR Tr Exited −1,000,000 −$132M —
Globe Life Inc Exited −572,900 −$63.9M —
IT Ishares Tr New +500,000 +$40.9M 10.9%
MP Medical Pptys Trust Inc Added +5,092,900 +$30.7M 36.4%
Valero Energy Corp New +200,000 +$26.4M 7.0%
Carnival Corp Exited −1,000,000 −$24.9M —
Vistra Corp Exited −150,000 −$20.7M —

Showing the 10 largest of 35 changes.

Q4 2024

quarter ended December 31, 2024 · filed February 11, 2025

Company Action Shares changed Value of change % of portfolio
IT Ishares Tr Added +2,000,000 +$157M 23.1%
SS Select Sector SPDR Tr New +1,000,000 +$132M 8.6%
SS SPDR S&P 500 ETF Tr Trimmed −200,000 −$117M 23.0%
Globe Life Inc New +572,900 +$63.9M 4.2%
KT Knight-swift Transn Hldgs In New +1,061,300 +$56.3M 3.7%
Carnival Corp Trimmed −2,000,000 −$49.8M 1.6%
MP Medical Pptys Trust Inc Added +7,780,000 +$30.7M 4.5%
Vistra Corp Trimmed −150,000 −$20.7M 1.4%
AA American Airls Group Inc Trimmed −1,000,000 −$17.4M 0.6%
Centrus Energy Corp Exited −252,100 −$13.8M —

Showing the 10 largest of 28 changes.

Q3 2024

quarter ended September 30, 2024 · filed November 08, 2024

Company Action Shares changed Value of change % of portfolio
IT Ishares Tr New +2,500,000 +$201M 15.6%
SS SPDR S&P 500 ETF Tr Trimmed −250,000 −$143M 35.7%
Carnival Corp New +3,000,000 +$55.4M 4.3%
KT Knight-swift Transn Hldgs In Exited −1,000,000 −$49.9M —
MP Medical Pptys Trust Inc Added +7,832,000 +$45.8M 4.5%
Vistra Corp New +300,000 +$35.6M 2.8%
AA American Airls Group Inc New +1,500,000 +$16.9M 1.3%
Arbor Realty Trust Inc New +1,000,000 +$15.6M 1.2%
IG International Game Technolog Exited −684,635 −$14M —
Centrus Energy Corp New +252,100 +$13.8M 1.1%

Showing the 10 largest of 39 changes.

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