Charter Oak Advisors LP

In its 13F for Q3 2025 (holdings as of September 30, 2025, filed November 13, 2025), Charter Oak Advisors LP reported 11 stock positions worth $178.3 million. Its top holding was Talen Energy (TLN) at 56.5% of the portfolio, followed by Corning (GLW, 12.9%) and Clean Harbors (CLH, 8.4%). Compared with Q2 2025, it sold out of 2, added to 1 and reduced 1. The biggest buy was Talen Energy (TLN, shares +26%) and the biggest sale an exit from Ansys (ANSS).

Most Recent 13F
Q2 2026
Location
NEW YORK CITY, NY
CIK
0002022905
Portfolio Value
$178.3M (Q3 2025)
SEC Filing
0001420506-25-003177 ↗ filed Nov 13, 2025

Holdings Value

0$50.0M$100.0M$150.0M$200.0M Q4 2024: $156.3M Q4 2024 Q1 2025: $139.1M Q1 2025 Q2 2025: $162.4M Q2 2025 Q3 2025: $178.3M $178.3M Q3 2025 Q4 2025: $119.0M Q4 2025 Q1 2026: $165.0M Q1 2026 Q2 2026: $172.5M Q2 2026

Holdings 11 stocks · $178.3M
TLN Talen Energy Corp. 56.45% 236,580 $100.6M Add +26.4%
GLW Corning Inc. 12.88% 279,848 $23.0M No change
CLH Clean Harbors Inc. 8.41% 64,586 $15.0M No change
GLNG Golar LNG Ltd. 5.96% 262,899 $10.6M No change
PNR Pentair PLC 3.00% 48,318 $5.4M No change
CR Crane Co. 2.95% 28,535 $5.3M No change
ICE Intercontinental Exchange Inc. 2.71% 28,680 $4.8M No change
KBR KBR Inc. 2.43% 91,551 $4.3M Reduce -63.0%
VVV Valvoline Inc. 2.36% 117,171 $4.2M No change
ATMU Atmus Filtration Technologie 1.68% 66,464 $3.0M No change
MOD Modine Manufacturing Co. 1.17% 14,616 $2.1M No change

Options reported separately and not counted above: SPY puts ($99.9M).

Other holdings (1): bonds, preferreds, convertibles and warrants · $537K (not counted above)
SecurityClassShares / PrincipalValueChange
EOS ENERGY ENTER -CW26 *W EXP 11/17/202 300,000$537KNo change

Total filed on the 13F, all lines: $178.8M.

Portfolio Sells Q2 2025 → Q3 2025
ANSS Ansys Inc. Sold out 0.00% −11.08
GDDY GoDaddy Inc. Class A Sold out 0.00% −8.44
KBR KBR Inc. Reduce -63.0% 2.43% −4.88

Portfolio Buys Q2 2025 → Q3 2025
TLN Talen Energy Corp. Add +26.4% 56.45% +22.94

Options Activity Q2 2025 → Q3 2025
SPY SS SPDR S&P 500 ETF Trust-US put Add +50.0% 150,000 $99.9M

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

All Filings

QuarterPositions13F Reported ValueTop Holdings
Q2 2026 13$172.5MTLN, MOD, SON, AER, GLNG
Q1 2026 13$165.0MTLN, MOD, SON, GLNG, CLH
Q4 2025 13$119.0MTLN, SON, CLH, GLW, GLNG
Q3 2025 11$178.3MTLN, GLW, CLH, GLNG, PNR
Q2 2025 13$162.4MTLN, ANSS, CLH, GLW, GDDY
Q1 2025 13$139.1MTLN, ANSS, KBR, GDDY, GLW
Q4 2024 14$156.3MKBR, TLN, ICE, CLH, PNR