Summit Street Capital Management, LLC
In its 13F for Q2 2026 (holdings as of June 30, 2026, filed August 14, 2026), Summit Street Capital Management, LLC reported 31 stock positions worth $712.6 million. Its top holding was Lantheus (LNTH) at 6.2% of the portfolio, followed by Molina Healthcare (MOH, 5.8%) and Humana (HUM, 5.1%). Compared with Q1 2026, it opened 1 new position, sold out of 1, added to 4 and reduced 24. The biggest buy was Humana (HUM, shares +37%) and the biggest sale Teekay Tankers Class A (TNK, shares −43%).
- Most Recent 13F
- Q2 2026
- Location
- NEW YORK, NY
- CIK
- 0001595533
- Portfolio Value
- $712.6M (Q2 2026)
- SEC Filing
- 0001595533-26-000004 ↗ filed Aug 14, 2026
Holdings Value
Holdings 31 stocks · $712.6M
| LNTH Lantheus Holdings Inc. | 6.24% | 400,699 | $44.5M | Reduce -3.6% |
| MOH Molina Healthcare Inc. | 5.84% | 182,031 | $41.6M | Reduce -5.5% |
| HUM Humana Inc. | 5.10% | 91,449 | $36.3M | Add +36.7% |
| SIG Signet Jewelers Ltd. | 4.08% | 337,316 | $29.1M | Add +20.9% |
| UTHR United Therapeutics Corp. | 4.01% | 52,789 | $28.6M | Reduce -7.2% |
| ELV Elevance Health Inc. | 3.91% | 72,040 | $27.9M | Reduce -2.6% |
| WFRD Weatherford International PL | 3.86% | 337,875 | $27.5M | Reduce -4.9% |
| FOXA Fox Corp. Class A | 3.76% | 514,311 | $26.8M | Add +62.3% |
| HPQ HP Inc. | 3.66% | 1,189,974 | $26.1M | Add +86.2% |
| VLO Valero Energy Corp. | 3.66% | 100,073 | $26.1M | Reduce -21.6% |
| CF CF Industries Holdings Inc. | 3.63% | 238,812 | $25.9M | Reduce -10.9% |
| HCC Warrior Met Coal Inc. | 3.61% | 317,202 | $25.7M | Reduce -9.9% |
| MPC Marathon Petroleum Corp. | 3.51% | 97,758 | $25.0M | Reduce -7.0% |
| CNR Core Natural Resources Inc. | 3.19% | 284,218 | $22.7M | Reduce -6.9% |
| KLAC KLA Corp. | 3.10% | 73,279 | $22.1M | Reduce -51.1% |
| CMCSA Comcast Corp. Class A | 3.08% | 895,459 | $22.0M | New |
| MU Micron Technology Inc. | 3.08% | 19,018 | $22.0M | Reduce -64.5% |
| LRCX Lam Research Corp. | 3.07% | 50,428 | $21.9M | Reduce -50.3% |
| AMAT Applied Materials Inc. | 3.00% | 29,589 | $21.4M | Reduce -50.0% |
| INTC Intel Corp. | 2.69% | 137,030 | $19.1M | Reduce -61.6% |
| DINO HF Sinclair Corp. | 2.57% | 263,017 | $18.3M | Reduce -10.7% |
| IDCC Interdigital Inc. | 2.55% | 64,149 | $18.2M | No change |
| STNG Scorpio Tankers Inc. | 2.50% | 256,772 | $17.8M | Reduce -38.7% |
| LYB Lyondellbasell Indu Class A | 2.49% | 336,501 | $17.7M | Reduce -19.8% |
| TNK Teekay Tankers Ltd. Class A | 2.47% | 270,880 | $17.6M | Reduce -42.5% |
| DDS Dillards Inc. Class A | 2.35% | 31,734 | $16.8M | Reduce -4.2% |
| CSCO Cisco Systems Inc. | 2.35% | 142,412 | $16.7M | Reduce -29.9% |
| LB Landbridge Co. LLC-A | 2.26% | 203,365 | $16.1M | Reduce -10.5% |
| TPL Texas Pacific Land Corp. | 2.08% | 33,918 | $14.8M | Reduce -8.0% |
| BKE The Buckle Inc. | 1.61% | 271,903 | $11.5M | Reduce -6.8% |
| GNTX Gentex Corp. | 0.68% | 192,825 | $4.9M | No change |
Portfolio Sells Q1 2026 → Q2 2026
| TNK Teekay Tankers Ltd. Class A | Reduce -42.5% | 2.47% | −2.42 |
| WBD Warner Bros Discovery Inc. | Sold out | 0.00% | −2.32 |
| LYB Lyondellbasell Indu Class A | Reduce -19.8% | 2.49% | −2.29 |
| STNG Scorpio Tankers Inc. | Reduce -38.7% | 2.50% | −1.93 |
| CNR Core Natural Resources Inc. | Reduce -6.9% | 3.19% | −1.33 |
| CF CF Industries Holdings Inc. | Reduce -10.9% | 3.63% | −1.29 |
| HCC Warrior Met Coal Inc. | Reduce -9.9% | 3.61% | −1.02 |
| WFRD Weatherford International PL | Reduce -4.9% | 3.86% | −0.89 |
| VLO Valero Energy Corp. | Reduce -21.6% | 3.66% | −0.80 |
| UTHR United Therapeutics Corp. | Reduce -7.2% | 4.01% | −0.75 |
| BKE The Buckle Inc. | Reduce -6.8% | 1.61% | −0.47 |
| TPL Texas Pacific Land Corp. | Reduce -8.0% | 2.08% | −0.39 |
| DDS Dillards Inc. Class A | Reduce -4.2% | 2.35% | −0.33 |
| MPC Marathon Petroleum Corp. | Reduce -7.0% | 3.51% | −0.12 |
| DINO HF Sinclair Corp. | Reduce -10.7% | 2.57% | −0.03 |
| KLAC KLA Corp. | Reduce -51.1% | 3.10% | −0.02 |
| LRCX Lam Research Corp. | Reduce -50.3% | 3.07% | +0.00 |
| LB Landbridge Co. LLC-A | Reduce -10.5% | 2.26% | +0.04 |
| CSCO Cisco Systems Inc. | Reduce -29.9% | 2.35% | +0.12 |
| AMAT Applied Materials Inc. | Reduce -50.0% | 3.00% | +0.14 |
| INTC Intel Corp. | Reduce -61.6% | 2.69% | +0.46 |
| MU Micron Technology Inc. | Reduce -64.5% | 3.08% | +0.52 |
| ELV Elevance Health Inc. | Reduce -2.6% | 3.91% | +0.85 |
| LNTH Lantheus Holdings Inc. | Reduce -3.6% | 6.24% | +1.78 |
| MOH Molina Healthcare Inc. | Reduce -5.5% | 5.84% | +2.21 |
Portfolio Buys Q1 2026 → Q2 2026
All Filings
| Quarter | Positions | 13F Reported Value | Top Holdings |
|---|---|---|---|
| Q2 2026 | 31 | $712.6M | LNTH, MOH, HUM, SIG, UTHR |
| Q1 2026 | 31 | $707.3M | CF, TNK, LYB, UTHR, WFRD |
| Q4 2025 | 31 | $636.2M | HCC, WBD, WFRD, UTHR, CNR |
| Q3 2025 | 30 | $729.0M | HPQ, IDCC, DDS, CNR, UTHR |
| Q2 2025 | 30 | $606.2M | MU, WBD, KLAC, LRCX, IDCC |
| Q1 2025Amended | 30 | $600.6M | WBD, IDCC, UTHR, CNR, CF |
| Q4 2024Amended | 30 | $638.0M | IDCC, TPL, UTHR, WBD, CF |
| Q3 2024 | 29 | $280.1M | BRK.A, UTHR, IDCC, TPL, HCC |
| Q2 2024 | 29 | $273.7M | BRK.A, UTHR, LRCX, AMAT, KLAC |
| Q1 2024 | 31 | $260.4M | BRK.A, MU, AMAT, KLAC, MPC |