Boundary Creek Advisors LP

In its 13F for Q3 2025 (holdings as of September 30, 2025, filed November 7, 2025), Boundary Creek Advisors LP reported 1 stock position worth $22.9 million. Its top holding was Global Business Travel (GBTG) at 100.0% of the portfolio. Compared with Q2 2025, it opened 1 new position and sold out of 3. The biggest buy was a new position in Global Business Travel (GBTG) and the biggest sale an exit from Solaris Resources (SLSR).

Most Recent 13F
Q2 2026
Location
TUCKAHOE, NY
CIK
0001771944
Portfolio Value
$22.9M (Q3 2025)
SEC Filing
0001771944-25-000007 ↗ filed Nov 7, 2025

Holdings Value

0$50.0M$100.0M$150.0M$200.0M$250.0M Q1 2024: $146.8M Q1 2024 Q2 2024: $203.0M Q2 2024 Q3 2024: $152.7M Q3 2024 Q4 2024: $149.4M Q4 2024 Q1 2025: $109.7M Q1 2025 Q2 2025: $39.9M Q2 2025 Q3 2025: $22.9M $22.9M Q3 2025 Q4 2025: $20.9M Q4 2025 Q1 2026: $15.3M Q1 2026 Q2 2026: $0 Q2 2026

Holdings 1 stocks · $22.9M
GBTG Global Business Travel Group 100.00% 2,735,449 $22.9M New

Portfolio Sells Q2 2025 → Q3 2025
SLSR Solaris Resources Inc. Sold out 0.00% −57.10
MATV Mativ Holdings Inc. Sold out 0.00% −22.44
MERC Mercer International Inc. Sold out 0.00% −20.45

Portfolio Buys Q2 2025 → Q3 2025
GBTG Global Business Travel Group New 100.00% +100.00

Options Activity Q2 2025 → Q3 2025
SPY SS SPDR S&P 500 ETF Trust-US call Sold out 500,000 $308.9Mbefore exit
MPT Medical Properties Trust Inc. put Sold out 22,500,000 $97.0Mbefore exit
MATV Mativ Holdings Inc. call Sold out 875,000 $6.0Mbefore exit
MERC Mercer International Inc. call Sold out 1,400,000 $4.9Mbefore exit

Calls and puts are listed by the shares they cover; their value is not part of the stock holdings above.

Notes & Other Activity Q2 2025 → Q3 2025
VEEAW Plum Acquisition I A -CW28 *W EXP 09/13/202 Sold out 28,083 $4Kbefore exit

Bonds, preferreds, convertibles and warrants; not part of the stock holdings or percentages above.

All Filings

QuarterPositions13F Reported ValueTop Holdings
Q2 2026 0$0
Q1 2026 1$15.3MGBTG
Q4 2025 1$20.9MGBTG
Q3 2025 1$22.9MGBTG
Q2 2025 3$39.9MSLSR, MATV, MERC
Q1 2025 11$109.7MSLSR, MERC, KNX, MATV, LEU
Q4 2024 11$149.4MMERC, MATV, KNX, SLSR, LEU
Q3 2024 9$152.7MMATV, MERC, SLSR, LEU, KNX
Q2 2024 16$203.0MMATV, MERC, KNX, AMBP, SLSR
Q1 2024 11$146.8MMATV, MERC, BRSL, AMBP, KNX