Quantum Portfolio Management LLC
Long book
$229.6M
Q1 2026
Positions
254
Top-10 weight
25%
concentration
Last quarter
+13.0%
SPY +14.8%
Turnover
33%
of book per quarter
Strategy in plain words
auto-generated from filingsQuantum Portfolio Management LLC is an institutional manager, running a $229.6M US long book across 254 positions.
The portfolio is broadly diversified across 254 positions (top 10 only 25%). The portfolio is actively managed, with meaningful quarterly turnover. Current anchor positions: APPLE INC, NVIDIA CORP, ISHARES MSCI EMERGING MARKET, ISHARES MSCI EAFE VALUE ETF, FED HERMES TTL RTRN BND.
Over the last 9 quarters its long book ran on average 0.2pp per quarter behind the S&P 500, beating the index in 3 of 9 quarters. Signal value of individual moves is limited — treat changes as weak evidence.
Implied long-book return vs S&P 500
methodology: positions priced quarterly, no shorts/options Fund long book S&P 500
Q1 2024
+2.8%
Q2 2024
+5.5%
Q3 2024
+0.6%
Q4 2024
-2.5%
Q1 2025
+11.0%
Q2 2025
+8.1%
Q3 2025
+0.7%
Q4 2025
-0.2%
Q1 2026
+13.0%
Sector allocation
Technology 37%
Industrials 14%
Financials 11%
Consumer discretionary 10%
Utilities 8%
Other 5%
Healthcare 5%
Energy 3%
Long book by quarter
What does Quantum Portfolio own?
Q1 2026 13F| Company | Sector | Shares | Value | % of book | Change |
|---|---|---|---|---|---|
| AAPL APPLE INC | Technology | 50.4K | $12.8M | 5.6% | +0.5% |
| NVDA NVIDIA CORP | Technology | 48.4K | $8.4M | 3.7% | +0.1% |
| GOOG ALPHABET INC-CL C | Technology | 14.3K | $4.1M | 1.8% | 0.0% |
| AGX ARGAN INC | Industrials | 7.5K | $4.1M | 1.8% | +8.5% |
| MSFT MICROSOFT CORP | Technology | 10.2K | $3.8M | 1.6% | +3.9% |
| GOOGL ALPHABET INC-CL A | Technology | 10.8K | $3.1M | 1.4% | -0.2% |
| AMZN AMAZON.COM INC | Consumer discretionary | 14.3K | $3.0M | 1.3% | -0.3% |
| AVGO BROADCOM INC | Technology | 8.3K | $2.6M | 1.1% | +1.0% |
| META META PLATFORMS INC-CLASS A | Technology | 4.1K | $2.4M | 1.0% | -3.5% |
| LRCX LAM RESEARCH CORP | Industrials | 8.9K | $1.9M | 0.8% | -0.2% |
| MCK MCKESSON CORP | Consumer discretionary | 2.2K | $1.9M | 0.8% | +8.2% |
| MU MICRON TECHNOLOGY INC | Technology | 5.2K | $1.7M | 0.8% | +60.6% |
| FIVE FIVE BELOW | Consumer discretionary | 7.6K | $1.7M | 0.8% | +2.6% |
| PLTR PALANTIR TECHNOLOGIES INC-A | Technology | 11.7K | $1.7M | 0.7% | +4.4% |
| WMB WILLIAMS COS INC | Utilities | 22.5K | $1.6M | 0.7% | -0.1% |
| COST COSTCO WHOLESALE CORP | Consumer discretionary | 1.5K | $1.5M | 0.6% | -2.0% |
| AMCR AMCOR PLC | Other | 36.9K | $1.5M | 0.6% | New |
| TIGO MILLICOM INTL CELLULAR S.A. | Communications | 19.5K | $1.5M | 0.6% | +14.1% |
| DGX QUEST DIAGNOSTICS INC | Healthcare | 7.4K | $1.5M | 0.6% | -3.5% |
| SGI SOMNIGROUP INTERNATIONAL INC | Other | 19.3K | $1.4M | 0.6% | +4.2% |
| NFLX NETFLIX INC | Services media | 14.1K | $1.4M | 0.6% | -0.3% |
| VRT VERTIV HOLDINGS CO-A | Technology | 5.2K | $1.3M | 0.6% | -1.0% |
| LH LABCORP HOLDINGS INC | Healthcare | 4.6K | $1.2M | 0.5% | -1.7% |
| DOV DOVER CORP | Industrials | 5.8K | $1.2M | 0.5% | +6.9% |
| AN AUTONATION INC | Consumer discretionary | 5.9K | $1.2M | 0.5% | -0.9% |
| APH AMPHENOL CORP-CL A | Technology | 9.1K | $1.1M | 0.5% | 0.0% |
| TTWO TAKE-TWO INTERACTIVE SOFTWRE | Technology | 5.7K | $1.1M | 0.5% | -0.5% |
| APPF APPFOLIO INC - A | Technology | 7.0K | $1.1M | 0.5% | +5.7% |
| CBRE CBRE GROUP INC - A | Real estate | 8.1K | $1.1M | 0.5% | -5.0% |
| JPM JPMORGAN CHASE & CO | Financials | 3.7K | $1.1M | 0.5% | +0.7% |
| ASML ASML HOLDING NV-NY REG SHS | Industrials | 821 | $1.1M | 0.5% | -0.2% |
| WMT WALMART INC | Consumer discretionary | 8.7K | $1.1M | 0.5% | +77.1% |
| EBC EASTERN BANKSHARES INC | Financials | 50.4K | $985K | 0.4% | -1.5% |
| CLH CLEAN HARBORS INC | Utilities | 3.4K | $981K | 0.4% | -6.1% |
| NEE NEXTERA ENERGY INC | Utilities | 10.4K | $967K | 0.4% | +27.8% |
| BKR BAKER HUGHES CO | Industrials | 15.7K | $961K | 0.4% | -10.3% |
| MTZ MASTEC INC | Industrials | 3.0K | $953K | 0.4% | +0.9% |
| BEN FRANKLIN RESOURCES INC | Financials | 39.9K | $941K | 0.4% | New |
| VST VISTRA CORP | Utilities | 6.2K | $939K | 0.4% | -28.7% |
| CHRD CHORD ENERGY CORP | Energy | 6.5K | $923K | 0.4% | +3.4% |
| L LOEWS CORP | Financials | 8.6K | $919K | 0.4% | New |
| AXS AXIS CAPITAL HOLDINGS LTD | Financials | 8.8K | $894K | 0.4% | +5.4% |
| CW CURTISS-WRIGHT CORP | Industrials | 1.3K | $885K | 0.4% | -9.0% |
| HWM HOWMET AEROSPACE INC | Industrials | 3.8K | $873K | 0.4% | -1.4% |
| SOFI SOFI TECHNOLOGIES INC | Financials | 55.0K | $873K | 0.4% | +29.3% |
| CHRW C.H. ROBINSON WORLDWIDE INC | Industrials | 5.1K | $852K | 0.4% | New |
| STXN SEAGATE TECHNOLOGY HOLDINGS | — | 2.1K | $829K | 0.4% | +3.3% |
| CEG CONSTELLATION ENERGY | Utilities | 2.8K | $779K | 0.3% | -20.1% |
| MSI MOTOROLA SOLUTIONS INC | Technology | 1.8K | $775K | 0.3% | -9.3% |
| TSLA TESLA INC | Industrials | 2.1K | $773K | 0.3% | -29.3% |
13F filing history
| Period | Form | Filed | Entries | Reported value | Flags | Source |
|---|---|---|---|---|---|---|
| Q1 2026 | 13F-HR/ARESTATEMENT | May 1, 2026 | 254 | $229.6M | canonical | SEC ↗ |
| Q1 2026 | 13F-HR | Apr 29, 2026 | 264 | $230.0M | SEC ↗ | |
| Q4 2025 | 13F-HR | Feb 12, 2026 | 238 | $226.4M | canonical | SEC ↗ |
| Q3 2025 | 13F-HR | Oct 29, 2025 | 262 | $336.5M | canonical | SEC ↗ |
| Q2 2025 | 13F-HR | Aug 13, 2025 | 232 | $209.6M | canonical | SEC ↗ |
| Q1 2025 | 13F-HR | May 14, 2025 | 273 | $197.2M | canonical | SEC ↗ |
| Q4 2024 | 13F-HR | Jan 23, 2025 | 251 | $186.3M | canonical | SEC ↗ |
| Q3 2024 | 13F-HR | Oct 24, 2024 | 236 | $184.6M | canonical | SEC ↗ |
| Q2 2024 | 13F-HR | Aug 6, 2024 | 244 | $174.2M | canonical | SEC ↗ |
| Q1 2024 | 13F-HR | May 14, 2024 | 244 | $175.8M | canonical | SEC ↗ |
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