In its 13F for Q3 2025 (holdings as of September 30, 2025, filed November 14, 2025), 140 Summer Partners LP reported 19 stock positions worth $1.1 billion . Its top holding was Capital One Financial (COF) at 10.0% of the portfolio, followed by Mastec (MTZ, 7.2% ) and CRH (CRH, 7.0% ). Compared with Q2 2025, it opened 8 new positions, sold out of 2, added to 4 and reduced 7. The biggest buy was a new position in Mastec (MTZ) and the biggest sale an exit from Western Alliance Bancorp (WAL).
Location New York, NY
CIK 0001820788
Portfolio Value $1.1B (Q3 2025) Holdings 19 stocks · $1.1B Holdings quarter Q2 2026 Q1 2026 Q4 2025 Q3 2025 Q2 2025 Q1 2025 Q4 2024 Q3 2024 Q2 2024 Q1 2024
Stock % Of Portfolio ▼ Shares Held Total Value Change vs Q2 2025 COF Capital One Financial Corp. 530,879 $112.9M Add +6.5% MTZ Mastec Inc. 383,038 $81.5M New CRH CRH PLC 662,724 $79.5M Add +4.1% AER Aercap Holdings NV 647,743 $78.4M Reduce -15.0% WBS Webster Financial Corp. 1,269,592 $75.5M New TMUS T-Mobile US Inc. 312,474 $74.8M Add +116.7% COOP Mr Cooper Group Inc. 331,376 $69.9M Reduce -29.4% PGR Progressive Corp. 254,397 $62.8M Add +6.8% PNR Pentair PLC 548,503 $60.8M New SGI Somnigroup International Inc. 699,006 $58.9M Reduce -19.7% VST Vistra Corp. 293,231 $57.4M Reduce -8.3% PFSI Pennymac Financial Services 446,140 $55.3M New VIK Viking Holdings Ltd. 876,744 $54.5M Reduce -7.3% JBTM JBT Marel Corp. 353,544 $49.7M New TDS Telephone and Data Systems 1,249,158 $49.0M Reduce -24.1% MAS Masco Corp. 668,746 $47.1M New BOH Bank of Hawaii Corp. filed as BANK HAWAII CORP 558,553 $36.7M Reduce -18.7% AYI Acuity Inc. 47,500 $16.4M New OPTU Optimum Communications Inc. Class A filed as ALTICE USA INC 3,159,576 $7.6M New
Options reported separately and not counted above: ASTS puts ($18.2M), HE puts ($4.8M).
Portfolio Sells Q2 2025 → Q3 2025 Portfolio Sells quarter Q2 2026 Q1 2026 Q4 2025 Q3 2025 Q2 2025 Q1 2025 Q4 2024 Q3 2024 Q2 2024 Q1 2024
Stock Change vs Q2 2025 % Of Portfolio Change To Portfolio ▲ WAL Western Alliance Bancorp Sold out 0.00% −7.88 AER Aercap Holdings NV Reduce -15.0% 6.95% −4.59 TDS Telephone and Data Systems Reduce -24.1% 4.34% −3.23 VST Vistra Corp. Reduce -8.3% 5.09% −2.93 COOP Mr Cooper Group Inc. Reduce -29.4% 6.19% −2.87 BOH Bank of Hawaii Corp. Reduce -18.7% 3.25% −2.75 SGI Somnigroup International Inc. Reduce -19.7% 5.22% −2.45 ECHO Echostar Corp. Class A Sold out 0.00% −1.77 VIK Viking Holdings Ltd. Reduce -7.3% 4.83% −1.70
Portfolio Buys Q2 2025 → Q3 2025 Portfolio Buys quarter Q2 2026 Q1 2026 Q4 2025 Q3 2025 Q2 2025 Q1 2025 Q4 2024 Q3 2024 Q2 2024 Q1 2024
Stock Change vs Q2 2025 % Of Portfolio Change To Portfolio ▼ MTZ Mastec Inc. New 7.22% +7.22 WBS Webster Financial Corp. New 6.69% +6.69 PNR Pentair PLC New 5.38% +5.38 PFSI Pennymac Financial Services New 4.90% +4.90 JBTM JBT Marel Corp. New 4.40% +4.40 MAS Masco Corp. New 4.17% +4.17 TMUS T-Mobile US Inc. Add +116.7% 6.63% +2.18 AYI Acuity Inc. New 1.45% +1.45 OPTU Optimum Communications Inc. Class A New 0.67% +0.67 CRH CRH PLC Add +4.1% 7.04% −0.52 PGR Progressive Corp. Add +6.8% 5.57% −2.66 COF Capital One Financial Corp. Add +6.5% 10.00% −3.72
Options Activity Q2 2025 → Q3 2025 Security Type Change vs Q2 2025 Underlying Shares Value ▼ ENPH Enphase Energy Inc. put Sold out 1,159,000 $46.0Mbefore exit ECHO Echostar Corp. Class A put Sold out 1,280,000 $35.5Mbefore exit ASTS Ast Spacemobile Inc. put New 371,700 $18.2M VG Venture Global Inc. Class A put Sold out 895,000 $13.9Mbefore exit HE Hawaiian Electric Inds put Reduce -0.7% 434,100 $4.8M
Calls and puts are listed by the shares they cover; their value is not part of the stock holdings above.
All Filings Quarter Positions 13F Reported Value Top Holdings Q2 2026 20 $1.2B VSAT, MTZ, KGS, GLPI, SGI Q1 2026 20 $1.1B MTZ, PCG, VIK, GLPI, TMUS Q4 2025 19 $1.3B COF, ECHO, PFSI, WBS, AER Q3 2025 19 $1.1B COF, MTZ, CRH, AER, WBS Q2 2025 13 $772.8M COF, AER, COOP, PGR, VST Q1 2025 14 $740.5M PGR, AER, UNH, TMUS, VST Q4 2024 15 $765.8M PGR, AER, TMUS, COF, COOP Q3 2024 15 $753.8M AER, PGR, WAL, TMUS, CZR Q2 2024 13 $726.0M PGR, AER, CZR, WAL, TMUS Q1 2024 13 $711.8M AER, PGR, WAL, CZR, TMUS