S.A. Mason LLC
Long book
$266.4M
Q1 2026
Positions
266
Top-10 weight
29%
concentration
Last quarter
+11.5%
SPY +14.8%
Turnover
11%
of book per quarter
Strategy in plain words
auto-generated from filingsS.A. Mason LLC is an institutional manager, running a $266.4M US long book across 266 positions.
The portfolio is moderately concentrated (top 10 ≈ 29% of the book). Turnover is modest: positions are typically held for years. Current anchor positions: NVIDIA CORP, VANGUARD TOTAL STOCK MKT ETF, VANGUARD SHORT TAX-EX BOND, ISHARES CORE S&P 500 ETF, VANGUARD S&P 500 ETF.
Over the last 9 quarters its long book ran on average 0.4pp 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
+3.0%
Q2 2024
+6.1%
Q3 2024
+0.6%
Q4 2024
-1.7%
Q1 2025
+9.7%
Q2 2025
+7.9%
Q3 2025
+1.8%
Q4 2025
-2.4%
Q1 2026
+11.5%
Sector allocation
Technology 37%
Consumer discretionary 13%
Healthcare 11%
Industrials 10%
Services media 6%
Financials 5%
Energy 4%
Other 4%
Long book by quarter
What does S.A. Mason own?
Q1 2026 13F| Company | Sector | Shares | Value | % of book | Change |
|---|---|---|---|---|---|
| NVDA NVIDIA CORP | Technology | 79.7K | $13.9M | 5.2% | -2.3% |
| MSFT MICROSOFT CORP | Technology | 15.5K | $5.7M | 2.2% | +1.1% |
| AAPL APPLE INC | Technology | 22.4K | $5.7M | 2.1% | +2.8% |
| COST COSTCO WHOLESALE CORP | Consumer discretionary | 5.0K | $5.0M | 1.9% | +0.1% |
| PLTR PALANTIR TECHNOLOGIES INC-A | Technology | 22.3K | $3.3M | 1.2% | -0.4% |
| GOOGL ALPHABET INC-CL A | Technology | 10.9K | $3.1M | 1.2% | +0.1% |
| TJX TJX COMPANIES INC | Consumer discretionary | 16.9K | $2.7M | 1.0% | Held |
| ABBV ABBVIE INC | Healthcare | 12.2K | $2.7M | 1.0% | +1.6% |
| MA MASTERCARD INC - A | Services media | 5.0K | $2.5M | 0.9% | +2.9% |
| V VISA INC-CLASS A SHARES | Services media | 7.8K | $2.4M | 0.9% | +39.0% |
| CVX CHEVRON CORP | Energy | 11.1K | $2.3M | 0.9% | +4.8% |
| PEP PEPSICO INC | Consumer staples | 14.3K | $2.2M | 0.8% | +8.7% |
| INTU INTUIT INC | Technology | 5.1K | $2.2M | 0.8% | +0.1% |
| AMGN AMGEN INC | Healthcare | 6.3K | $2.2M | 0.8% | Held |
| GE GENERAL ELECTRIC | Industrials | 7.7K | $2.2M | 0.8% | +0.1% |
| ORLY O'REILLY AUTOMOTIVE INC | Consumer discretionary | 23.2K | $2.1M | 0.8% | +6.9% |
| PG PROCTER & GAMBLE CO/THE | Other | 14.3K | $2.1M | 0.8% | +1.5% |
| META META PLATFORMS INC-CLASS A | Technology | 3.5K | $2.0M | 0.8% | +51.3% |
| JNJ JOHNSON & JOHNSON | Healthcare | 7.5K | $1.8M | 0.7% | +0.1% |
| PANW PALO ALTO NETWORKS INC | Technology | 11.2K | $1.8M | 0.7% | +50.8% |
| LLY ELI LILLY & CO | Healthcare | 1.9K | $1.8M | 0.7% | +0.2% |
| MU MICRON TECHNOLOGY INC | Technology | 5.2K | $1.8M | 0.7% | -1.1% |
| GOOG ALPHABET INC-CL C | Technology | 6.2K | $1.8M | 0.7% | +10.3% |
| WMT WALMART INC | Consumer discretionary | 13.6K | $1.7M | 0.6% | +2.6% |
| BRK/B BERKSHIRE HATHAWAY INC-CL B | Financials | 3.4K | $1.6M | 0.6% | +0.6% |
| AXP AMERICAN EXPRESS CO | Financials | 5.1K | $1.5M | 0.6% | 0.0% |
| MCD MCDONALD'S CORP | Consumer discretionary | 4.9K | $1.5M | 0.6% | -3.9% |
| SNDK SANDISK CORP | Technology | 2.4K | $1.5M | 0.6% | +4.6% |
| VRT VERTIV HOLDINGS CO-A | Technology | 5.7K | $1.4M | 0.5% | -0.3% |
| KMB KIMBERLY-CLARK CORP | Other | 14.2K | $1.4M | 0.5% | +1.5% |
| AMZN AMAZON.COM INC | Consumer discretionary | 6.5K | $1.4M | 0.5% | +8.7% |
| JPM JPMORGAN CHASE & CO | Financials | 4.5K | $1.3M | 0.5% | +5.9% |
| ABT ABBOTT LABORATORIES | Healthcare | 12.4K | $1.3M | 0.5% | +2.7% |
| ISRG INTUITIVE SURGICAL INC | Healthcare | 2.7K | $1.3M | 0.5% | +56.9% |
| RTX RTX CORP | Industrials | 6.5K | $1.3M | 0.5% | -0.7% |
| SYK STRYKER CORP | Healthcare | 3.5K | $1.2M | 0.4% | +9.2% |
| NEE NEXTERA ENERGY INC | Utilities | 12.3K | $1.1M | 0.4% | +0.1% |
| XOM EXXON MOBIL CORP | Energy | 6.6K | $1.1M | 0.4% | +0.2% |
| ROL ROLLINS INC | Services media | 20.7K | $1.1M | 0.4% | Held |
| CRWD CROWDSTRIKE HOLDINGS INC - A | Technology | 2.8K | $1.1M | 0.4% | -2.8% |
| HD HOME DEPOT INC | Consumer discretionary | 3.2K | $1.1M | 0.4% | +6.6% |
| FCX FREEPORT-MCMORAN INC | Materials | 17.1K | $1.0M | 0.4% | +85.8% |
| LOW LOWE'S COS INC | Consumer discretionary | 4.2K | $997K | 0.4% | +0.6% |
| WFC WELLS FARGO & CO | Financials | 12.1K | $961K | 0.4% | Held |
| B BARRICK MINING CORP | Materials | 23.1K | $943K | 0.4% | Held |
| CAT CATERPILLAR INC | Industrials | 1.3K | $917K | 0.3% | Held |
| PH PARKER HANNIFIN CORP | Industrials | 1.0K | $909K | 0.3% | +1.0% |
| ACN ACCENTURE PLC-CL A | Services media | 4.5K | $896K | 0.3% | -2.2% |
| BA BOEING CO/THE | Industrials | 4.5K | $890K | 0.3% | Held |
| CSCO CISCO SYSTEMS INC | Technology | 11.4K | $888K | 0.3% | 0.0% |
13F filing history
| Period | Form | Filed | Entries | Reported value | Flags | Source |
|---|---|---|---|---|---|---|
| Q1 2026 | 13F-HR | Apr 27, 2026 | 266 | $266.4M | canonical | SEC ↗ |
| Q4 2025 | 13F-HR | Jan 29, 2026 | 261 | $252.9M | canonical | SEC ↗ |
| Q3 2025 | 13F-HR | Oct 14, 2025 | 256 | $226.6M | canonical | SEC ↗ |
| Q2 2025 | 13F-HR | Jul 14, 2025 | 362 | $206.7M | canonical | SEC ↗ |
| Q1 2025 | 13F-HR | Apr 23, 2025 | 348 | $189.3M | canonical | SEC ↗ |
| Q4 2024 | 13F-HR | Jan 24, 2025 | 342 | $190.4M | canonical | SEC ↗ |
| Q3 2024 | 13F-HR | Oct 25, 2024 | 324 | $188.6M | canonical | SEC ↗ |
| Q2 2024 | 13F-HR | Jul 10, 2024 | 319 | $175.9M | canonical | SEC ↗ |
| Q1 2024 | 13F-HR | Apr 15, 2024 | 314 | $166.4M | canonical | SEC ↗ |
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