Belfer Management LLC
Regulatory profile
From Form ADV, the SEC filer profile, 13D/13G type codes and N-CEN, never from the name.
Portfolio style
Measured from the filed 13F common-share book for Jun 30, 2026, the newest measured quarter, never from the firm's own description.
Closest benchmark: the Dow Jones Industrial Average as of 2026-07-31, active share 92.1%; sector active share 40.5% against the combined 13F book's sector weights.
Over time 16 measured quarters
How the bands are measured
Style bands measure the filed 13F common-share book each closed quarter, tested in this order. Unknown: under $10,000,000 of valued equity or 5 stocks. Index-like (100+ stocks): active share of 20% or less against the closest benchmark, which is the S&P 500, S&P MidCap 400, S&P SmallCap 600, Russell 1000, Russell 2000, Nasdaq-100 or Dow Jones Industrial Average (weighted by an index-tracking fund's reported holdings or the index's constituents nearest the quarter end, over the names resolved to companies, and only when those are 90%+ of its weight) or every 13F filer's combined book, or index series holding 80%+ of the registered fund assets it advises (N-CEN) and equal to 50%+ of its book. Systematic-like: 500+ stocks, 100%+ annual turnover and a top 10 weight of 25% or less. Concentrated: a top 10 weight of 60%+ or 12 or fewer effective positions. Diversified active: none of these. Turnover is the smaller of buys and sells over average equity value, summed over four quarters: low under 30%, high 100%+. Horizon is the value-weighted number of quarters each position has been held: short under 4, long 12+.
Clone Performance
Build a hypothetical price-return history from this filer's public 13F holdings.
View clone backtestPortfolio Concentration
16 tracked positions · as of Sep 30, 2026 · Δ vs Jun 30, 2026Portfolio Trend
Sector Breakdown
As of Sep 30, 2026| Sector | % Portfolio | Value |
|---|---|---|
| Energy | 22.3% | $1,326,226 |
| Healthcare | 16.8% | $997,416 |
| Consumer Cyclical | 16.4% | $975,395 |
| Industrials | 10.3% | $613,402 |
| Financial Services | 9.2% | $548,563 |
| Communication Services | 8.8% | $524,447 |
| Basic Materials | 8.5% | $507,093 |
| Unclassified | 7.5% | $443,297 |
Last Quarter's Activity
Export CSVAdded To
Positions the filer increased| Ticker | Company | Δ Shares | Shares | Value | Open |
|---|---|---|---|---|---|
| POOL | Pool Corp | +62 | 1,345 | $217,715 | |
| No positions match the current search. | |||||
Trimmed
Positions the filer reduced| Ticker | Company | Δ Shares | Shares | Value | Open |
|---|---|---|---|---|---|
| HG | Hamilton Insurance Group, Ltd. | −381 | 16,603 | $548,563 | |
| No positions match the current search. | |||||
| Ticker | Company | Type | Shares | Value (USD) | % of Portfolio | History |
|---|---|---|---|---|---|---|
| CPNG |
Coupang, Inc.
Consumer Cyclical
|
Held | 53,943 | $748,189 | 12.60% | |
| HG |
Hamilton Insurance Group, Ltd.
Financial Services
|
Reduced | 16,603 | $548,563 | 9.24% | |
| WES |
Western Midstream Partners, LP
Energy
|
Held | 10,081 | $447,293 | 7.54% | |
| GLD |
Spdr Gold Trust
|
Held | 1,164 | $443,297 | 7.47% | |
| MPLX |
Mplx LP
Energy
|
Held | 7,829 | $440,929 | 7.43% | |
| ET |
Energy Transfer LP
Energy
|
Held | 22,155 | $438,004 | 7.38% | |
| LMT |
Lockheed Martin Corp
Industrials
|
Held | 777 | $395,687 | 6.67% | |
| LH |
Labcorp Holdings Inc.
Healthcare
|
Held | 1,162 | $358,023 | 6.03% | |
| AVTR |
Avantor, Inc.
Healthcare
|
Held | 22,317 | $335,870 | 5.66% | |
| GOOGL |
Alphabet Inc.
Communication Services
|
Held | 913 | $314,145 | 5.29% | |
| DHR |
Danaher Corp
Healthcare
|
NEW | 1,370 | $303,523 | 5.11% | |
| SHW |
Sherwin Williams Co
Basic Materials
|
Held | 856 | $276,719 | 4.66% | |
| APD |
Air Products & Chemicals, Inc.
Basic Materials
|
Held | 828 | $230,374 | 3.88% | |
| ULTA |
Ulta Beauty, Inc.
Consumer Cyclical
|
NEW | 416 | $227,206 | 3.83% | |
| POOL |
Pool Corp
Industrials
|
Added | 1,345 | $217,715 | 3.67% | |
| META |
Meta Platforms, Inc.
Communication Services
|
NEW | 290 | $210,302 | 3.54% |
Covers the securities this platform tracks: U.S.-listed common stock and the put/call positions reported on it. A 13F can also report security types outside that coverage — preferred shares, bonds, warrants, untracked share classes — so the filing's own declared total can exceed the figures above. The source filing is linked at the top of this table.