CIK: 0001481957
Total reported value
$6.0M
Reporting period: 2026-06-30 · Number of holdings: 16
Belfer Management LLC disclosed 16 holdings in its latest 13F filing for the period ending 2026-06-30, with total reported value of $6.0M and a quarterly turnover rate of 22.5%.
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Belfer Management LLC's disclosed holdings carry a Herfindahl concentration index of 0.076 — mathematically equivalent to about 13 equally-sized positions, close to its 16 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 0.48), suggesting a disciplined, rules-based approach to how much capital goes into each idea.
Recent activity leans toward initiating meaningfully larger new positions than it adds to existing ones (a 4.4 percentage-point tilt) — a pattern consistent with a more contrarian, new-idea-driven approach.
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New buy POOL
New buy HUM
Sold out ULTA
Trim ET
-19.4% -$106.8K
Trim CPNG
0.0% -$81.5K
Trim LMT
0.0% -$73.7K
| # | Ticker | Issuer | Asset Subclass | Weight | Weight Change | Shares Change | 4Q Trend |
|---|---|---|---|---|---|---|---|
| 1 | CPNG | Coupang Inc | Stock-Consumer Disc | 15.53% | -1.50% | — | |
| 2 | ✓ | Hamilton Insurance Group LTD | Stock-Other | 9.56% | +0.25% | -8.96% | |
| 3 | WES | Western Midstream Partners L | Stock-Energy | 7.31% | -1.02% | -16.67% | |
| 4 | MPLX | Mplx LP | Stock-Energy | 7.31% | -0.16% | — | |
| 5 | GLD | Spdr Gold Shares | ETF-Commodities | 7.11% | -1.27% | — | |
| 6 | ET | Energy Transfer LP | Stock-Energy | 7.02% | -1.85% | -19.38% | |
| 7 | LMT | Lockheed Martin CORP | Stock-Industrials | 6.56% | -1.29% | — | |
| 8 | GOOGL | Alphabet Inc-cl A | Stock-Comm Services | 5.41% | +1.02% | — | |
| 9 | LH | Labcorp Holdings Inc | Stock-Healthcare | 5.39% | +0.20% | — | |
| 10 | SHW | Sherwin-williams Co/the | Stock-Materials | 4.89% | +0.30% | — | |
| 11 | POOL | Pool CORP | Stock-Industrials | 4.57% | +4.57% | NEW | |
| 12 | HUM | Humana Inc | Stock-Healthcare | 4.22% | +4.22% | NEW | |
| 13 | APD | Air Products & Chemicals Inc | Stock-Materials | 4.02% | — | — | |
| 14 | DLTR | Dollar Tree Inc | Stock-Consumer Staples | 3.72% | -0.63% | -21.86% | |
| 15 | ORI | Old Republic Intl CORP | Stock-Financials | 3.72% | +0.06% | — | |
| 16 | AVTR | Avantor Inc | Stock-Healthcare | 3.66% | +0.73% | — |
Performance for Q3 2026
+9.5%
Performance Last 4 Quarters
-2.7%
| Period | Holdings | Total value | Stability | Top holdings | |
|---|---|---|---|---|---|
| 2026 Q2 | 16 | $6.0M | 23 | ||
| 2026 Q1 | 15 | $6.0M | 20 | ||
| 2025 Q4 | 14 | $5.7M | 29 | ||
| 2025 Q3 | 19 | $7.2M | 36 | ||
| 2025 Q2 | 16 | $6.5M | 0 | ||
| 2025 Q1 | 14 | $5.8M | 100 | ||
| 2024 Q4 | 15 | $6.3M | 0 | ||
| 2024 Q3 | 15 | $6.2M | 0 | ||
| 2024 Q2 | 14 | $5.3M | 0 | ||
| 2024 Q1 | 15 | $5.5M | 0 | ||
| 2023 Q4 | 14 | $4.7M | 0 | ||
| 2023 Q3 | 12 | $3.9M | 0 | ||
| 2023 Q2 | 10 | $3.8M | — | ||
| 2023 Q1 | 12 | $3.9M | — | ||
| 2022 Q4 | 10 | $2.9M | — | ||
| 2022 Q3 | 9 | $2.7M | — | ||
| 2022 Q2 | 1 | — | 0 | ||
| 2022 Q1 | 1 | — | 0 | ||
| 2021 Q4 | 1 | $44.0M | 0 | ||
| 2021 Q3 | 1 | $30.9M | 0 | ||
| 2021 Q2 | 1 | $35.4M | 100 | ||
| 2021 Q1 | 1 | $33.9M | 6 | ||
| 2020 Q4 | 1 | $32.0M | 10 | ||
| 2020 Q3 | 1 | $29.0M | 32 | ||
| 2020 Q2 | 1 | $21.0M | 53 | ||
| 2020 Q1 | 1 | $12.1M | 79 | ||
| 2019 Q4 | 1 | $27.9M | 5 | ||
| 2019 Q3 | 1 | $29.4M | 23 | ||
| 2019 Q2 | 1 | $36.9M | 24 | ||
| 2019 Q1 | 1 | $28.9M | 1 | ||
| 2018 Q4 | 1 | $28.7M | 17 | ||
| 2018 Q3 | 1 | $34.0M | 18 | ||
| 2018 Q2 | 1 | $40.8M | 31 | ||
| 2018 Q1 | 1 | $29.8M | 16 | ||
| 2017 Q4 | 1 | $34.9M | 21 | ||
| 2017 Q3 | 1 | $42.9M | 11 | ||
| 2017 Q2 | 1 | $38.5M | 6 | ||
| 2017 Q1 | 1 | $36.1M | 3 | ||
| 2016 Q4 | 1 | $34.9M | 17 | ||
| 2016 Q3 | 1 | $29.5M | 27 | ||
| 2016 Q2 | 1 | $22.5M | 13 | ||
| 2016 Q1 | 1 | $25.5M | 2 | ||
| 2015 Q4 | 1 | $25.9M | 14 | ||
| 2015 Q3 | 1 | $29.9M | 51 | ||
| 2015 Q2 | 1 | $17.8M | 100 | ||
| 2015 Q1 | 1 | — | — | ||
| 2014 Q4 | 1 | — | — | ||
| 2014 Q3 | 1 | — | — | ||
| 2014 Q2 | 1 | — | — | ||
| 2014 Q1 | 1 | — | — | ||
| 2013 Q4 | 1 | — | — | ||
| 2013 Q3 | 1 | — | — | ||
| 2013 Q2 | 1 | — | — |
Belfer Management LLC's most significant position changes for 2026-06-30: New buy: Pool CORP (POOL); New buy: Humana Inc (HUM); Sold out: Ulta Beauty Inc (ULTA); Trim: Energy Transfer LP (ET) — shares -19.38%; Trim: Western Midstream Partners L (WES) — shares -16.67%.
| # | Ticker | Issuer | Weight Change | Shares Change | Action |
|---|---|---|---|---|---|
| 1 | POOL | Pool CORP | +4.6% | NEW | New buy |
| 2 | HUM | Humana Inc | +4.2% | NEW | New buy |
| 3 | GOOGL | Alphabet Inc-cl A | +1% | — | Unchanged |
| 4 | AVTR | Avantor Inc | +0.7% | — | Unchanged |
| 5 | SHW | Sherwin-williams Co/the | +0.3% | — | Unchanged |
| 6 | ✓ | Hamilton Insurance Group LTD | +0.3% | -8.96% | Trim |
| 7 | LH | Labcorp Holdings Inc | +0.2% | — | Unchanged |
| 8 | ORI | Old Republic Intl CORP | +0.1% | — | Unchanged |
| 9 | APD | Air Products & Chemicals Inc | — | — | Unchanged |
| 10 | MPLX | Mplx LP | -0.2% | — | Unchanged |
| 11 | DLTR | Dollar Tree Inc | -0.6% | -21.86% | Trim |
| 12 | WES | Western Midstream Partners L | -1% | -16.67% | Trim |
| 13 | GLD | Spdr Gold Shares | -1.3% | — | Unchanged |
| 14 | LMT | Lockheed Martin CORP | -1.3% | — | Unchanged |
| 15 | CPNG | Coupang Inc | -1.5% | — | Unchanged |
| 16 | ET | Energy Transfer LP | -1.9% | -19.38% | Trim |
| 17 | ULTA | Ulta Beauty Inc | -3.6% | EXIT | Sold out |
Belfer Management LLC returned an annualized 10.9% over the trailing 36 months — underperforming the S&P 500 by 1.7 points — based on a reconstructed track record of its disclosed 13F positions, with a beta of 0.66 (less volatile than the market) and a 44% quarterly batting average against the index.
Its portfolio is broadly diversified and moderately active.
Its turnover score has risen from 0 to 23 over the past 4 quarters — a shift toward more active trading.
It has added to its LH position over the past two quarters (+$44.0K, now $325.4K), while trimming CPNG over the same stretch (-$291.0K, still holding $937.0K).
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