Charter Oak Advisors LP

In its 13F for Q1 2025 (holdings as of March 31, 2025, filed May 13, 2025), Charter Oak Advisors LP reported 13 stock positions worth $139.1 million. Its top holding was Talen Energy (TLN) at 26.9% of the portfolio, followed by Ansys (ANSS, 11.7%) and KBR (KBR, 10.8%). Compared with Q4 2024, it opened 2 new positions, sold out of 3, added to 3 and reduced 6. The biggest buy was Talen Energy (TLN, shares +73%) and the biggest sale an exit from Energy Transfer (ET).

Most Recent 13F
Q2 2026
Location
NEW YORK CITY, NY
CIK
0002022905
Portfolio Value
$139.1M (Q1 2025)
SEC Filing
0001420506-25-001030 ↗ filed May 13, 2025

Holdings Value

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

Holdings 13 stocks · $139.1M
TLN Talen Energy Corp. 26.87% 187,233 $37.4M Add +73.4%
ANSS Ansys Inc. 11.66% 51,220 $16.2M Add +232.2%
KBR KBR Inc. 10.84% 302,646 $15.1M Reduce -34.7%
GDDY GoDaddy Inc. Class A 9.86% 76,151 $13.7M New
GLW Corning Inc. 9.21% 279,848 $12.8M New
CLH Clean Harbors Inc. 9.15% 64,586 $12.7M Reduce -2.7%
GLNG Golar LNG Ltd. 7.18% 262,899 $10.0M Add +38.8%
ICE Intercontinental Exchange Inc. 3.56% 28,680 $4.9M Reduce -73.2%
CR Crane Co. 3.14% 28,535 $4.4M No change
PNR Pentair PLC 3.04% 48,318 $4.2M Reduce -63.5%
VVV Valvoline Inc. 2.93% 117,171 $4.1M Reduce -63.8%
ATMU Atmus Filtration Technologie 1.75% 66,464 $2.4M No change
MOD Modine Manufacturing Co. 0.81% 14,616 $1.1M Reduce -72.4%
Other holdings (1): bonds, preferreds, convertibles and warrants · $1.1M (not counted above)
SecurityClassShares / PrincipalValueChange
EOS ENERGY ENTER -CW26 *W EXP 11/17/202 300,000$1.1MNew

Total filed on the 13F, all lines: $140.2M.

Portfolio Sells Q4 2024 → Q1 2025
ET Energy Transfer LP Sold out 0.00% −8.37
ICE Intercontinental Exchange Inc. Reduce -73.2% 3.56% −6.65
KBR KBR Inc. Reduce -34.7% 10.84% −6.35
TEVA Teva Pharmaceutical-SP ADR Sold out 0.00% −6.07
PNR Pentair PLC Reduce -63.5% 3.04% −5.48
VVV Valvoline Inc. Reduce -63.8% 2.93% −4.56
MOD Modine Manufacturing Co. Reduce -72.4% 0.81% −3.13
TTEK Tetra Tech Inc. Sold out 0.00% −1.64
CLH Clean Harbors Inc. Reduce -2.7% 9.15% −0.62

Portfolio Buys Q4 2024 → Q1 2025
TLN Talen Energy Corp. Add +73.4% 26.87% +12.95
GDDY GoDaddy Inc. Class A New 9.86% +9.86
GLW Corning Inc. New 9.21% +9.21
ANSS Ansys Inc. Add +232.2% 11.66% +8.33
GLNG Golar LNG Ltd. Add +38.8% 7.18% +2.05

Options Activity Q4 2024 → Q1 2025
TEVA Teva Pharmaceutical-SP ADR put Sold out 430,300 $9.5Mbefore exit
CLH Clean Harbors Inc. put Sold out 38,000 $8.7Mbefore exit

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

Notes & Other Activity Q4 2024 → Q1 2025
EOS ENERGY ENTER -CW26 *W EXP 11/17/202 New 300,000 $1.1M

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