In its 13F for Q4 2025 (holdings as of December 31, 2025, filed February 17, 2026), Pennant Investors, LP reported 15 stock positions worth $410.6 million . Its top holding was Echostar Class A (ECHO) at 19.4% of the portfolio, followed by Microsoft (MSFT, 9.9% ) and Solstice Adv Materials (SOLS, 8.3% ). Compared with Q3 2025, it opened 1 new position, added to 1 and reduced 7. The biggest buy was a new position in Solstice Adv Materials (SOLS) and the biggest sale Core Scientific (CORZ, shares −16% ).
Location Summit, NJ
CIK 0001759176
Portfolio Value $410.6M (Q4 2025) Holdings 15 stocks · $410.6M 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 Q3 2025 ECHO Echostar Corp. Class A 19.40% 732,759 $79.7M Reduce -21.8% MSFT Microsoft Corp. 9.94% 84,400 $40.8M Reduce -10.8% SOLS Solstice Adv Materials Inc. 8.28% 700,000 $34.0M New PRM Perimeter Solutions Inc. 8.00% 1,193,000 $32.8M Reduce -13.8% GOOGL Alphabet Inc. Class A 7.01% 92,000 $28.8M Reduce -14.7% AMZN Amazon.com Inc. 6.80% 121,000 $27.9M No change TDG Transdigm Group Inc. 5.98% 18,471 $24.6M No change EXE Expand Energy Corp. 5.81% 216,200 $23.9M No change CORZ Core Scientific Inc. 5.46% 1,540,495 $22.4M Reduce -15.6% CCC CCC Intelligent Solutions Ho 5.17% 2,671,502 $21.2M Add +225.2% AR Antero Resources Corp. 4.45% 530,000 $18.3M Reduce -19.9% VRT Vertiv Holdings Co. Class A 4.30% 109,000 $17.7M Reduce -19.9% GEV GE Vernova Inc. 3.60% 22,600 $14.8M No change VMI Valmont Industries 3.25% 33,120 $13.3M No change QXO Qxo Inc. 2.55% 543,000 $10.5M No change
Options reported separately and not counted above: CORZ calls ($7.3M).
Other holdings (1): bonds, preferreds, convertibles and warrants · $24K (not counted above) Security Class Shares / Principal Value Change GRABW Grab Holdings Ltd.-CW 26 *W EXP 99/99/999 80,000 $24K No change
Total filed on the 13F, all lines: $410.7M.
Portfolio Sells Q3 2025 → Q4 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 Q3 2025 % Of Portfolio Change To Portfolio ▲ CORZ Core Scientific Inc. Reduce -15.6% 5.46% −3.35 MSFT Microsoft Corp. Reduce -10.8% 9.94% −3.24 AR Antero Resources Corp. Reduce -19.9% 4.45% −1.52 VRT Vertiv Holdings Co. Class A Reduce -19.9% 4.30% −1.22 PRM Perimeter Solutions Inc. Reduce -13.8% 8.00% −0.34 GOOGL Alphabet Inc. Class A Reduce -14.7% 7.01% −0.04 ECHO Echostar Corp. Class A Reduce -21.8% 19.40% +0.14
Portfolio Buys Q3 2025 → Q4 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 Q3 2025 % Of Portfolio Change To Portfolio ▼ SOLS Solstice Adv Materials Inc. New 8.28% +8.28 CCC CCC Intelligent Solutions Ho Add +225.2% 5.17% +3.16
Options Activity Q3 2025 → Q4 2025 Security Type Change vs Q3 2025 Underlying Shares Value ▼ CORZ Core Scientific Inc. call New 500,000 $7.3M
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 15 $334.9M SOLS, AMZN, MSFT, ECHO, PRM Q1 2026 16 $361.0M SOLS, ECHO, MSFT, VRT, AMZN Q4 2025 15 $410.6M ECHO, MSFT, SOLS, PRM, GOOGL Q3 2025 14 $371.7M ECHO, MSFT, CORZ, PRM, AMZN Q2 2025 15 $334.3M MSFT, ECHO, TDG, PRM, AR Q1 2025 15 $332.4M ECHO, AMZN, TDG, AR, MSFT Q4 2024 14 $336.7M ECHO, AMZN, AR, PRM, GOOGL Q3 2024 14 $336.0M ECHO, PRM, MU, AMZN, AR Q2 2024 44 $366.2M MU, AMZN, TDG, ECHO, MSFT Q1 2024 42 $361.7M AMZN, TDG, MSFT, MU, AR