SRB CORP
Long book
$1.63B
Q1 2026
Positions
23
Top-10 weight
68%
concentration
Last quarter
+21.0%
SPY +14.8%
Turnover
0%
of book per quarter
Strategy in plain words
auto-generated from filingsSRB CORP is a concentrated fundamental stock-picker, running a $1.63B US long book across 23 positions.
The portfolio is concentrated: the top 10 names carry 68% of the portfolio. The book barely moves quarter to quarter — a patient, low-turnover holder. Current anchor positions: MICROSOFT CORP, SAFETY INSURANCE GROUP INC, RENAISSANCERE HOLDINGS LTD, SS TECHNOLOGY SELECT SECTOR, INTEL CORP.
Over the last 9 quarters its long book ran on average 1.2pp per quarter behind the S&P 500, beating the index in 3 of 9 quarters. We rate its filings highest-signal: new buys here are worth attention.
Implied long-book return vs S&P 500
methodology: positions priced quarterly, no shorts/options Fund long book S&P 500
Q1 2024
-3.8%
Q2 2024
+2.9%
Q3 2024
-3.0%
Q4 2024
-3.5%
Q1 2025
+10.7%
Q2 2025
+5.4%
Q3 2025
+4.2%
Q4 2025
-4.4%
Q1 2026
+21.0%
Sector allocation
Technology 32%
Consumer discretionary 26%
Financials 21%
Healthcare 8%
Industrials 7%
Other 3%
Communications 3%
Long book by quarter
What does SRB CORP own?
Q1 2026 13F| Company | Sector | Shares | Value | % of book | Change |
|---|---|---|---|---|---|
| MSFT MICROSOFT CORP | Technology | 575.5K | $213.1M | 13.1% | -16.9% |
| SAFT SAFETY INSURANCE GROUP INC | Financials | 1.8M | $130.4M | 8.0% | -2.6% |
| RNR RENAISSANCERE HOLDINGS LTD | Financials | 388.5K | $115.5M | 7.1% | -7.5% |
| INTC INTEL CORP | Technology | 2.1M | $94.7M | 5.8% | -1.8% |
| AMZN AMAZON.COM INC | Consumer discretionary | 450.4K | $93.8M | 5.8% | -2.2% |
| GE GENERAL ELECTRIC | Industrials | 300.9K | $85.4M | 5.2% | -18.6% |
| WMT WALMART INC | Consumer discretionary | 620.6K | $77.1M | 4.7% | -14.6% |
| GWW WW GRAINGER INC | Consumer discretionary | 66.9K | $72.9M | 4.5% | -2.0% |
| GOOGL ALPHABET INC-CL A | Technology | 230.0K | $66.1M | 4.1% | -1.8% |
| MRK MERCK & CO. INC. | Healthcare | 463.3K | $55.7M | 3.4% | -2.1% |
| CVS CVS HEALTH CORP | Healthcare | 506.0K | $36.3M | 2.2% | -4.0% |
| SHW SHERWIN-WILLIAMS CO/THE | Consumer discretionary | 110.0K | $35.3M | 2.2% | -1.8% |
| PG PROCTER & GAMBLE CO/THE | Other | 232.9K | $33.6M | 2.1% | -12.3% |
| CMCSA COMCAST CORP-CLASS A | Communications | 1.1M | $31.5M | 1.9% | Held |
| RS RELIANCE INC | Consumer discretionary | 96.0K | $29.2M | 1.8% | -2.3% |
13F filing history
| Period | Form | Filed | Entries | Reported value | Flags | Source |
|---|---|---|---|---|---|---|
| Q1 2026 | 13F-HR | May 14, 2026 | 44 | $1.63B | canonical | SEC ↗ |
| Q4 2025 | 13F-HR | Feb 13, 2026 | 44 | $1.82B | canonical | SEC ↗ |
| Q3 2025 | 13F-HR | Nov 14, 2025 | 44 | $1.74B | canonical | SEC ↗ |
| Q2 2025 | 13F-HR | Aug 14, 2025 | 44 | $1.67B | canonical | SEC ↗ |
| Q1 2025 | 13F-HR | May 14, 2025 | 43 | $1.53B | canonical | SEC ↗ |
| Q4 2024 | 13F-HR | Feb 14, 2025 | 40 | $1.74B | canonical | SEC ↗ |
| Q3 2024 | 13F-HR | Nov 14, 2024 | 36 | $1.78B | canonical | SEC ↗ |
| Q2 2024 | 13F-HR | Aug 14, 2024 | 38 | $1.69B | canonical | SEC ↗ |
| Q1 2024 | 13F-HR | May 14, 2024 | 149 | $1.81B | canonical | SEC ↗ |
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