Cabot-Wellington, LLC
Long book
$338.1M
Q1 2026
Positions
5
Top-10 weight
100%
concentration
Last quarter
+14.1%
SPY +14.8%
Turnover
0%
of book per quarter
Strategy in plain words
auto-generated from filingsCabot-Wellington, LLC is a wealth-management firm allocating client money, running a $338.1M US long book across 5 positions.
The portfolio is extremely concentrated — the top 10 positions are almost the whole book. The book barely moves quarter to quarter — a patient, low-turnover holder. Current anchor positions: VANGUARD TOTAL STOCK MKT ETF, ISHARES CORE MSCI EAFE ETF, ISHARES CORE MSCI EMERGING, VANGUARD SMALL-CAP ETF, VANGUARD TOT WORLD STK ETF.
Over the last 9 quarters its long book ran on average 0pp per quarter behind the S&P 500, beating the index in 5 of 9 quarters. Its holdings are mechanical (indexing / client flows), so position changes carry no stock-picking signal.
Implied long-book return vs S&P 500
methodology: positions priced quarterly, no shorts/options Fund long book S&P 500
Q1 2024
+2.3%
Q2 2024
+6.5%
Q3 2024
+0.1%
Q4 2024
-2.3%
Q1 2025
+11.3%
Q2 2025
+7.6%
Q3 2025
+3.0%
Q4 2025
-2.4%
Q1 2026
+14.1%
Sector allocation
No sector data
Long book by quarter
What does Cabot-Wellington, LLC own?
Q1 2026 13F| Company | Sector | Shares | Value | % of book | Change |
|---|
13F filing history
| Period | Form | Filed | Entries | Reported value | Flags | Source |
|---|---|---|---|---|---|---|
| Q1 2026 | 13F-HR | May 6, 2026 | 5 | $338.1M | canonical | SEC ↗ |
| Q4 2025 | 13F-HR | Jan 28, 2026 | 5 | $311.8M | canonical | SEC ↗ |
| Q3 2025 | 13F-HR | Oct 29, 2025 | 5 | $309.1M | canonical | SEC ↗ |
| Q2 2025 | 13F-HR | Jul 30, 2025 | 5 | $290.3M | canonical | SEC ↗ |
| Q1 2025 | 13F-HR | Apr 14, 2025 | 5 | $271.4M | canonical | SEC ↗ |
| Q4 2024 | 13F-HR | Jan 28, 2025 | 4 | $263.1M | canonical | SEC ↗ |
| Q3 2024 | 13F-HR | Oct 25, 2024 | 4 | $266.0M | canonical | SEC ↗ |
| Q2 2024 | 13F-HR | Jul 25, 2024 | 4 | $255.4M | canonical | SEC ↗ |
| Q1 2024 | 13F-HR | May 23, 2024 | 4 | $257.7M | canonical | SEC ↗ |