SS
Summit Street Capital Management, LLC's 13F Portfolio ($712.6M, Q2 2026)
Summit Street Capital Management, LLCCIK: 0001595533
ContrarianQuality / disciplined sizingDiversified strategy
Total reported value
$712.6M
Reporting period: 2026-06-30 · Number of holdings: 31
Summit Street Capital Management, LLC disclosed 31 holdings in its latest 13F filing for the period ending 2026-06-30, with total reported value of $712.6M and a quarterly turnover rate of 33.1%.
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Personality snowflake
- Concentration
- 14.44
- Portfolio Stability
- 33.09
- Momentum
- 0
- Sector conviction
- 64.76
- Diversification
- 62
- Sizing Uniformity
- 96.49
Summit Street Capital Management, LLC's disclosed holdings carry a Herfindahl concentration index of 0.036 — mathematically equivalent to about 28 equally-sized positions, close to its 31 actual disclosed holdings. Value is spread relatively evenly across the portfolio rather than concentrated in a handful of names.
Position sizes are fairly uniform across the portfolio (a coefficient of variation of 0.35), suggesting a disciplined, rules-based approach to how much capital goes into each idea.
No strong tilt toward either adding to existing winners or initiating outsized new positions was observed in the latest reported quarter.
Source and citation information
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Recent moves
View source Form 13F filing on SEC.govAdd HUM
+36.7% $24.7M
New buy CMCSA
Trim TNK
-42.5% -$17.0M
Sold out WBD
Trim LYB
-19.8% -$16.1M
Add MOH
-5.5% $16.0M
Holdings Map
New buyAddUnchangedTrim
Top 10 holdings by weight
Full holdings list this quarter
| # | Ticker | Issuer | Asset Subclass | Weight | Weight Change | Shares Change | 4Q Trend |
|---|---|---|---|---|---|---|---|
| 1 | LNTH | Lantheus Holdings Inc | Stock-Healthcare | 6.24% | +1.78% | -3.56% | |
| 2 | MOH | Molina Healthcare Inc | Stock-Healthcare | 5.84% | +2.21% | -5.48% | |
| 3 | HUM | Humana Inc | Stock-Healthcare | 5.10% | +3.46% | +36.72% | |
| 4 | SIG | Signet Jewelers Limited | Stock-Consumer Disc | 4.08% | +0.74% | +20.95% | |
| 5 | UTHR | United Therapeutics CORP | Stock-Healthcare | 4.01% | -0.76% | -7.18% | |
| 6 | ELV | Elevance Health Inc | Stock-Healthcare | 3.91% | +0.85% | -2.63% | |
| 7 | WFRD | Weatherford International plc | Stock-Energy | 3.86% | -0.89% | -4.90% | |
| 8 | FOXA | Fox CORP - Class A | Stock-Comm Services | 3.76% | +1.14% | +62.31% | |
| 9 | HPQ | Hp Inc | Stock-Tech | 3.66% | +1.92% | +86.23% | |
| 10 | VLO | Valero Energy CORP | Stock-Energy | 3.66% | -0.80% | -21.57% | |
| 11 | CF | Cf Industries Holdings Inc | Stock-Materials | 3.63% | -1.29% | -10.92% | |
| 12 | HCC | Warrior Met Coal Inc | Stock-Materials | 3.61% | -1.03% | -9.88% | |
| 13 | MPC | Marathon Petroleum CORP | Stock-Energy | 3.51% | -0.12% | -7.03% | |
| 14 | CNR | Core Natural Resources Inc | Stock-Energy | 3.19% | -1.33% | -6.89% | |
| 15 | KLAC | Kla CORP | Stock-Tech | 3.10% | -0.02% | +389.15% | |
| 16 | CMCSA | Comcast Corp-class A | Stock-Comm Services | 3.08% | +3.08% | NEW | |
| 17 | MU | Micron Technology Inc | Stock-Tech | 3.08% | +0.52% | -64.52% | |
| 18 | LRCX | Lam Research CORP | Stock-Tech | 3.07% | — | -50.31% | |
| 19 | AMAT | Applied Materials Inc | Stock-Tech | 3.00% | +0.14% | -50.02% | |
| 20 | INTC | Intel CORP | Stock-Tech | 2.69% | +0.46% | -61.58% | |
| 21 | DINO | Hf Sinclair CORP | Stock-Energy | 2.57% | -0.03% | -10.72% | |
| 22 | IDCC | Interdigital Inc | Stock-Tech | 2.55% | -0.19% | — | |
| 23 | STNG | Scorpio Tankers Inc. | Stock-Other | 2.50% | -1.92% | -38.71% | |
| 24 | LYB | LyondellBasell Industries N.V. | Stock-Materials | 2.49% | -2.29% | -19.79% | |
| 25 | TNK | Teekay Tankers Ltd. | Stock-Other | 2.47% | -2.41% | -42.51% | |
| 26 | DDS | Dillards Inc-cl A | Stock-Other | 2.35% | -0.33% | -4.18% | |
| 27 | CSCO | Cisco Systems Inc | Stock-Tech | 2.35% | +0.12% | -29.94% | |
| 28 | LB | Landbridge Co Llc-a | Stock-Other | 2.26% | +0.04% | -10.51% | |
| 29 | TPL | Texas Pacific Land CORP | Stock-Energy | 2.08% | -0.39% | -7.99% | |
| 30 | BKE | Buckle Inc/the | Stock-Other | 1.61% | -0.47% | -6.78% | |
| 31 | GNTX | Gentex CORP | Stock-Consumer Disc | 0.68% | +0.08% | — |
Portfolio Performance
Performance for Q3 2026
+7.6%
Performance Last 4 Quarters
+87.7%
- Stdev
- +18.4%
- Beta
- +0.92
- Alpha
- +9%
- Max Drawdown
- -14.2%
- Annualized Perf
- +29.1%
- Batting Avg vs S&P
- +47.2%
- Sortino
- +3.21
- Stutzer
- +0.44
- Treynor
- +0.3
- Sterling
- +1.57
- Calmar
- +2.05
- Information Ratio
- +0.53
- Tracking Error
- +14%
- Stdev Down
- +8.5%
- Winning Months %
- +63.9%
- Losing Months %
- +36.1%
- Best 12 Months
- +94.7%
- Worst 12 Months
- -8.9%
- Efficiency Ratio
- +0.68
- Sharpe
- +1.49
- Stdev Sectors
- +9.1%
- Skewness
- +0.05
- Kurtosis
- -0.43
- Upside Potential
- +4.89
Reported value over time
Sector allocation
Sector allocation over time
Quarterly history
| Period | Holdings | Total value | Stability | Top holdings | |
|---|---|---|---|---|---|
| 2026 Q2 | 31 | $712.6M | 33 | ||
| 2026 Q1 | 31 | $707.3M | 24 | ||
| 2025 Q4 | 31 | $636.2M | 30 | ||
| 2025 Q3 | 30 | $729.0M | 88 | ||
| 2025 Q2 | 30 | $606.2M | 0 | ||
| 2025 Q1 | 30 | $600.6M | 0 | ||
| 2024 Q4 | 30 | $638.0M | 0 | ||
| 2024 Q3 | 29 | $280.1M | 0 | ||
| 2024 Q2 | 29 | $273.7M | 0 | ||
| 2024 Q1 | 31 | $260.4M | 0 | ||
| 2023 Q4 | 31 | $236.2M | 0 | ||
| 2023 Q3 | 31 | $224.1M | 0 | ||
| 2023 Q2 | 31 | $212.3M | 0 | ||
| 2023 Q1 | 30 | $188.2M | 0 | ||
| 2022 Q4 | 30 | $158.4M | 0 | ||
| 2022 Q3 | 30 | $144.1M | 0 | ||
| 2022 Q2 | 30 | $152.4M | 0 | ||
| 2022 Q1 | 31 | $165.4M | 0 | ||
| 2021 Q4 | 32 | $160.4M | 0 | ||
| 2021 Q3 | 32 | $150.5M | 0 | ||
| 2021 Q2 | 32 | $156.1M | 99 | ||
| 2021 Q1 | 33 | $154.1M | 37 | ||
| 2020 Q4 | 34 | $133.8M | 31 | ||
| 2020 Q3 | 36 | $113.0M | 22 | ||
| 2020 Q2 | 36 | $119.3M | 28 | ||
| 2020 Q1 | 32 | $92.4M | 58 | ||
| 2019 Q4 | 29 | $124.4M | 26 | ||
| 2019 Q3 | 29 | $142.6M | 35 | ||
| 2019 Q2 | 28 | $103.1M | 11 | ||
| 2019 Q1 | 29 | $104.3M | 33 | ||
| 2018 Q4 | 32 | $88.0M | 54 | ||
| 2018 Q3 | 30 | $102.6M | 28 | ||
| 2018 Q2 | 32 | $103.1M | 23 | ||
| 2018 Q1 | 32 | $100.9M | 38 | ||
| 2017 Q4 | 30 | $101.4M | 30 | ||
| 2017 Q3 | 28 | $87.5M | 40 | ||
| 2017 Q2 | 34 | $86.9M | 31 | ||
| 2017 Q1 | 32 | $91.2M | 31 | ||
| 2016 Q4 | 31 | $90.1M | 25 | ||
| 2016 Q3 | 32 | $93.0M | 23 | ||
| 2016 Q2 | 32 | $89.7M | 37 | ||
| 2016 Q1 | 33 | $96.2M | 38 | ||
| 2015 Q4 | 33 | $88.5M | 38 | ||
| 2015 Q3 | 34 | $84.2M | 55 | ||
| 2015 Q2 | 36 | $104.0M | 33 | ||
| 2015 Q1 | 37 | $111.9M | 37 | ||
| 2014 Q4 | 36 | $101.9M | 0 |
Holding changes this quarter
Summit Street Capital Management, LLC's most significant position changes for 2026-06-30: New buy: Comcast Corp-class A (CMCSA); Sold out: Warner Bros Discovery Inc (WBD); Add: Humana Inc (HUM) — shares +36.72%; Trim: Teekay Tankers Ltd. (TNK) — shares -42.51%; Trim: LyondellBasell Industries N.V. (LYB) — shares -19.79%.
| # | Ticker | Issuer | Weight Change | Shares Change | Action |
|---|---|---|---|---|---|
| 1 | HUM | Humana Inc | +3.5% | +36.72% | Add |
| 2 | CMCSA | Comcast Corp-class A | +3.1% | NEW | New buy |
| 3 | MOH | Molina Healthcare Inc | +2.2% | -5.48% | Trim |
| 4 | HPQ | Hp Inc | +1.9% | +86.23% | Add |
| 5 | LNTH | Lantheus Holdings Inc | +1.8% | -3.56% | Trim |
| 6 | FOXA | Fox CORP - Class A | +1.1% | +62.31% | Add |
| 7 | ELV | Elevance Health Inc | +0.9% | -2.63% | Trim |
| 8 | SIG | Signet Jewelers Limited | +0.7% | +20.95% | Add |
| 9 | MU | Micron Technology Inc | +0.5% | -64.52% | Trim |
| 10 | INTC | Intel CORP | +0.5% | -61.58% | Trim |
| 11 | AMAT | Applied Materials Inc | +0.1% | -50.02% | Trim |
| 12 | CSCO | Cisco Systems Inc | +0.1% | -29.94% | Trim |
| 13 | GNTX | Gentex CORP | +0.1% | — | Unchanged |
| 14 | LB | Landbridge Co Llc-a | 0% | -10.51% | Trim |
| 15 | LRCX | Lam Research CORP | — | -50.31% | Trim |
| 16 | KLAC | Kla CORP | 0% | +389.15% | Add |
| 17 | DINO | Hf Sinclair CORP | 0% | -10.72% | Trim |
| 18 | MPC | Marathon Petroleum CORP | -0.1% | -7.03% | Trim |
| 19 | IDCC | Interdigital Inc | -0.2% | — | Unchanged |
| 20 | DDS | Dillards Inc-cl A | -0.3% | -4.18% | Trim |
| 21 | TPL | Texas Pacific Land CORP | -0.4% | -7.99% | Trim |
| 22 | BKE | Buckle Inc/the | -0.5% | -6.78% | Trim |
| 23 | UTHR | United Therapeutics CORP | -0.8% | -7.18% | Trim |
| 24 | VLO | Valero Energy CORP | -0.8% | -21.57% | Trim |
| 25 | WFRD | Weatherford International plc | -0.9% | -4.90% | Trim |
| 26 | HCC | Warrior Met Coal Inc | -1% | -9.88% | Trim |
| 27 | CF | Cf Industries Holdings Inc | -1.3% | -10.92% | Trim |
| 28 | CNR | Core Natural Resources Inc | -1.3% | -6.89% | Trim |
| 29 | STNG | Scorpio Tankers Inc. | -1.9% | -38.71% | Trim |
| 30 | LYB | LyondellBasell Industries N.V. | -2.3% | -19.79% | Trim |
| 31 | WBD | Warner Bros Discovery Inc | -2.3% | EXIT | Sold out |
| 32 | TNK | Teekay Tankers Ltd. | -2.4% | -42.51% | Trim |
Filing History
FAQ
What is Summit Street Capital Management, LLC and what type of investor is it?
Summit Street Capital Management, LLC is an investment manager that files SEC Form 13F quarterly, disclosing its U.S. public equity holdings to regulators. As of the most recent reporting period (2026-06-30), the firm manages a tracked equity portfolio valued at approximately $712.6M, spread across 31 disclosed positions.
What are Summit Street Capital Management, LLC's largest equity positions?
Based on the latest 13F filing, Summit Street Capital Management, LLC's top holdings by market value are:
1. Lantheus Holdings Inc (LNTH) — $44.5M (6.2%)
2. Molina Healthcare Inc (MOH) — $41.6M (5.8%)
3. Humana Inc (HUM) — $36.3M (5.1%)
4. Signet Jewelers Limited (SIG) — $29.1M (4.1%)
5. United Therapeutics CORP (UTHR) — $28.6M (4.0%)
What changes did Summit Street Capital Management, LLC make in its most recent portfolio filing?
In the latest reported quarter, Summit Street Capital Management, LLC made 30 notable position adjustments: 1 new positions were initiated, 5 existing holdings were added to, 23 positions were partially reduced, and 1 were completely exited. The largest of these moves: New buy: Comcast Corp-class A (CMCSA); Sold out: Warner Bros Discovery Inc (WBD); Add: Humana Inc (HUM) — shares +36.72%; Trim: Teekay Tankers Ltd. (TNK) — shares -42.51%; Trim: LyondellBasell Industries N.V. (LYB) — shares -19.79%
What sectors does Summit Street Capital Management, LLC focus on?
Summit Street Capital Management, LLC is concentrated in the following sectors based on its current disclosed equity portfolio:
• Health Care: 28.3%
• Information Technology: 26.5%
• Energy: 21.3%
• Materials: 10.9%
• Communication Services: 7.7%
• Consumer Discretionary: 5.4%
💡
Data Source Notice: AlphaSMO is the web's most authoritative 13F / Inside Trader database. Institutional holdings and insider trades presented here are precisely computed to deliver accurate portfolio reporting.
Investment Profile
Summit Street Capital Management, LLC returned an annualized 29.1% over the trailing 36 months — outperforming the S&P 500 by 9.0 points — based on a reconstructed track record of its disclosed 13F positions, with a beta of 0.92 (roughly in line with the market) and a 47% quarterly batting average against the index.
Its portfolio is broadly diversified and moderately active.
Its turnover score has risen from 0 to 33 over the past 4 quarters — a shift toward more active trading.
It has added to its MOH position over the past two quarters (+$26.8M, now $41.6M), while trimming DDS over the same stretch (-$8.5M, still holding $16.8M).
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Developer Access
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