Arvin Capital Management LP In its 13F for Q1 2026 (holdings as of March 31, 2026, filed May 14, 2026), Arvin Capital Management LP reported 23 stock positions worth $427.9 million . Its top holding was Transalta (TAC) at 13.7% of the portfolio, followed by Thermo Fisher Scientific (TMO, 12.8% ) and Amentum (AMTM, 12.6% ). Compared with Q4 2025, it opened 7 new positions, sold out of 12, added to 11 and reduced 3. The biggest buy was Thermo Fisher Scientific (TMO, shares +65% ) and the biggest sale an exit from GE Healthcare Technology (GEHC).
Location AUSTIN, TX
CIK 0001961738
Portfolio Value $427.9M (Q1 2026) Holdings 23 stocks · $427.9M 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 Q4 2025 TAC Transalta Corp. 4,488,235 $58.8M Add +17.5% TMO Thermo Fisher Scientific Inc. 111,697 $54.9M Add +64.7% AMTM Amentum Holdings Inc. 2,071,200 $54.0M Add +26.6% DHR Danaher Corp. 185,510 $35.2M Add +35.9% RBA RB Global Inc. 300,500 $28.8M Add +92.6% GXO Gxo Logistics Inc. 525,419 $27.2M Add +3.6% OPCH Option Care Health Inc. 699,458 $18.8M Add +43.2% CRS Carpenter Technology 46,300 $18.2M Reduce -32.9% AKAM Akamai Technologies Inc. 135,152 $15.5M New Q Qnity Electronics Inc. 131,303 $15.1M Add +13.8% CEG Constellation Energy 52,215 $14.6M Add +33.2% AMZN Amazon.com Inc. 57,629 $12.0M Reduce -48.0% FICO Fair Isaac Corp. 11,217 $12.0M New ACVA Acv Auctions Inc. Class A 2,659,898 $11.3M Add +15.8% TECH Bio-Techne Corp. 204,304 $10.7M Reduce -31.8% AL Sumisho Air Lease Corp. filed as AIR LEASE CORP 151,059 $9.8M No change TSEM Tower Semiconductor Ltd. 44,135 $7.7M No change META Meta Platforms Inc. Class A 11,200 $6.4M New U Unity Software Inc. 220,382 $4.8M Add +103.0% MSFT Microsoft Corp. 12,300 $4.6M New SOLS Solstice Adv Materials Inc. 40,601 $3.1M New WAT Waters Corp. 10,174 $3.0M New RIG Transocean Ltd. 182,000 $1.2M New
Options reported separately and not counted above: MSFT calls ($75.5M), EFA puts ($46.6M), TMO calls ($24.6M), SMH puts ($23.0M), EWT puts ($22.2M), AKAM calls ($18.4M), CEG calls ($18.2M), QQQ puts ($17.3M), META calls ($17.2M), RKT calls ($16.0M), AMTM calls ($15.6M), PDD puts ($13.8M), and 15 more.
Portfolio Sells Q4 2025 → Q1 2026 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 Q4 2025 % Of Portfolio Change To Portfolio ▲ GEHC GE Healthcare Technology Sold out 0.00% −5.37 SNPS Synopsys Inc. Sold out 0.00% −4.44 EFX Equifax Inc. Sold out 0.00% −3.44 AMZN Amazon.com Inc. Reduce -48.0% 2.81% −2.71 ICLR Icon PLC Sold out 0.00% −1.97 IQV Iqvia Holdings Inc. Sold out 0.00% −1.87 FND Floor & Decor Holdings Inc. Class A Sold out 0.00% −1.61 CMG Chipotle Mexican Grill Inc. Sold out 0.00% −1.50 ITRI Itron Inc. Sold out 0.00% −1.42 NVDA Nvidia Corp. Sold out 0.00% −1.41 TECH Bio-Techne Corp. Reduce -31.8% 2.50% −1.30 ECHO Echostar Corp. Class A Sold out 0.00% −0.60 BE Bloom Energy Corp. Class A Sold out 0.00% −0.47 CRS Carpenter Technology Reduce -32.9% 4.26% −0.41 SRAD Sportradar Group AG-A Sold out 0.00% −0.31
Portfolio Buys Q4 2025 → Q1 2026 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 Q4 2025 % Of Portfolio Change To Portfolio ▼ TMO Thermo Fisher Scientific Inc. Add +64.7% 12.83% +4.37 AKAM Akamai Technologies Inc. New 3.63% +3.63 TAC Transalta Corp. Add +17.5% 13.74% +3.34 RBA RB Global Inc. Add +92.6% 6.73% +3.27 FICO Fair Isaac Corp. New 2.80% +2.80 AMTM Amentum Holdings Inc. Add +26.6% 12.62% +2.40 Q Qnity Electronics Inc. Add +13.8% 3.54% +1.51 META Meta Platforms Inc. Class A New 1.50% +1.50 DHR Danaher Corp. Add +35.9% 8.22% +1.49 MSFT Microsoft Corp. New 1.06% +1.06 OPCH Option Care Health Inc. Add +43.2% 4.40% +1.05 SOLS Solstice Adv Materials Inc. New 0.72% +0.72 WAT Waters Corp. New 0.71% +0.71 GXO Gxo Logistics Inc. Add +3.6% 6.37% +0.62 CEG Constellation Energy Add +33.2% 3.41% +0.42 RIG Transocean Ltd. New 0.28% +0.28 U Unity Software Inc. Add +103.0% 1.13% +0.10 ACVA Acv Auctions Inc. Class A Add +15.8% 2.64% −1.33
Options Activity Q4 2025 → Q1 2026 Security Type Change vs Q4 2025 Underlying Shares Value ▼ MSFT Microsoft Corp. call New 204,000 $75.5M EFA iShares MSCI Eafe ETF put New 480,000 $46.6M TMO Thermo Fisher Scientific Inc. call New 50,000 $24.6M SMH Vaneck Semiconductor ETF put New 60,000 $23.0M EWT iShares MSCI Taiwan ETF put New 312,800 $22.2M AKAM Akamai Technologies Inc. call New 160,000 $18.4M CEG Constellation Energy call New 65,000 $18.2M META Meta Platforms Inc. Class A call New 30,000 $17.2M RKT Rocket Cos Inc. Class A call New 1,120,000 $16.0M AMTM Amentum Holdings Inc. call Add +262.6% 596,500 $15.6M PDD PDD Holdings Inc. put New 135,200 $13.8M ON On Semiconductor call New 200,000 $12.4M GXO Gxo Logistics Inc. call New 178,400 $9.3M PINS Pinterest Inc. Class A call New 500,000 $9.2M NVDA Nvidia Corp. call New 50,000 $8.7M DHR Danaher Corp. call Add +8.1% 40,000 $7.6M WOLF Wolfspeed Inc. call New 400,000 $6.5M FICO Fair Isaac Corp. call New 6,000 $6.4M FND Floor & Decor Holdings Inc. Class A call Sold out 100,000 $6.1Mbefore exit ENTG Entegris Inc. put New 50,000 $5.9M U Unity Software Inc. call New 234,000 $5.1M TAC Transalta Corp. call Sold out 402,200 $5.1Mbefore exit TECH Bio-Techne Corp. call Sold out 84,800 $5.0Mbefore exit SNPS Synopsys Inc. call Sold out 10,000 $4.7Mbefore exit KBR KBR Inc. call Sold out 110,000 $4.4Mbefore exit NFLX Netflix Inc. put New 41,600 $4.0M AMTM Amentum Holdings Inc. put New 150,000 $3.9M BABA Alibaba Group Holding-SP ADR call Sold out 23,000 $3.4Mbefore exit COMP Compass Inc. Class A call New 241,900 $1.8M AMZN Amazon.com Inc. call Reduce -68.0% 8,000 $1.7M CCOI Cogent Communications Holdin call Sold out 18,500 $399Kbefore exit ICLR Icon PLC call Sold out 2,100 $383Kbefore exit NFLX Netflix Inc. call New 3,600 $346K UNP Union Pacific Corp. call New 1,000 $243K
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 32 $534.0M TAC, VST, GXO, RKT, TMO Q1 2026 23 $427.9M TAC, TMO, AMTM, DHR, RBA Q4 2025 28 $464.2M TAC, AMTM, TMO, DHR, GXO Q3 2025 22 $432.0M TAC, TMO, AMTM, DHR, CRS Q2 2025 23 $348.9M AMTM, TAC, DHR, TMO, AMZN Q1 2025 22 $270.9M AMTM, CRS, TAC, TSEM, OPCH Q4 2024 27 $249.2M AMTM, CRS, AVTR, STX, AMZN Q3 2024 21 $236.9M AMZN, AVTR, STX, CRS, VAL Q2 2024 21 $232.5M TRU, LW, VAL, STX, JBI Q1 2024 20 $216.5M FIS, RIG, TRU, JBI, TECK