SRB Corp Portfolio holdings
SRB is the investment arm of The Plymouth Rock Company, managing money for its parent and the property and casualty insurers affiliated with it since 1992. It manages bonds, stocks and real estate for those clients, and picks hedge funds and private equity investments for them. Because its clients are mostly insurers, its investment guidelines aim for safety of principal, enough cash on hand for operations, and as much total return as those limits allow. Among its indirect owners are Central Securities Corporation, a closed-end investment company, and James M. Stone, chairman and chief executive of The Plymouth Rock Company.
Top Buys
| Rank | Stock | Value |
|---|---|---|
| 1 |
State Street Technology Select Sector SPDR ETF
XLK
|
+$59.3M |
| 2 |
State Street Industrial Select Sector SPDR ETF
XLI
|
+$48.1M |
| 3 |
State Street Consumer Staples Select Sector SPDR ETF
XLP
|
+$35.8M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
Intel
INTC
|
+$109M |
| 2 |
GE Aerospace
GE
|
+$56.7M |
| 3 |
Walmart Inc
WMT
|
+$51.9M |
| 4 |
Procter & Gamble
PG
|
+$9.8M |
| 5 |
Microsoft
MSFT
|
+$2.9M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Miscellaneous | 32.65% |
| 2 | Technology | 19.42% |
| 3 | Financials | 13.85% |
| 4 | Consumer Discretionary | 8.42% |
| 5 | Industrials | 7.3% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | Held Since | |
|---|---|---|---|---|---|---|---|
|
1
State Street Technology Select Sector SPDR ETF
XLK
$109B
| $229M | 12.3% |
1,200,431
+347,007
| +41% | +$59.3M |
2025 Q1
5 quarters
|
|
|
2
Microsoft
MSFT
$3.94T
| $212M | 11.4% |
568,388
-7,161
| -1% | -$2.9M |
2013 Q2
52 quarters
|
|
|
3
Intel
INTC
$299B
| $149M | 8.02% |
1,067,407
-1,079,008
| -50% | -$109M |
2025 Q1
5 quarters
|
|
4
Safety Insurance
SAFT
$1.53B
| $134M | 7.23% |
1,794,655
| – | – |
2013 Q2
52 quarters
|
|
5
RenaissanceRe
RNR
$14B
| $123M | 6.62% |
388,478
| – | – |
2021 Q3
19 quarters
|
|
6
Amazon
AMZN
$2.8T
| $107M | 5.77% |
450,434
| – | – |
2023 Q4
10 quarters
|
|
7
W.W. Grainger
GWW
$67.9B
| $91M | 4.89% |
66,861
| – | – |
2020 Q4
22 quarters
|
|
8
State Street Health Care Select Sector SPDR ETF
XLV
$48.7B
| $88.3M | 4.75% |
556,818
| – | – |
2024 Q4
6 quarters
|
|
9
State Street Materials Select Sector SPDR ETF
XLB
$8.21B
| $87.9M | 4.73% |
1,729,580
| – | – |
2024 Q4
6 quarters
|
|
10
State Street Communication Services Select Sector SPDR ETF
XLC
$22.5B
| $85.8M | 4.61% |
800,774
| – | – |
2024 Q4
6 quarters
|
|
11
Alphabet (Google) Class A
GOOGL
$3.5T
| $81.8M | 4.4% |
228,868
-1,123
| -0.5% | -$404K |
2023 Q1
13 quarters
|
|
12
Merck
MRK
$362B
| $59.5M | 3.2% |
463,298
| – | – |
2013 Q2
52 quarters
|
|
|
13
State Street Industrial Select Sector SPDR ETF
XLI
$30.1B
| $57.5M | 3.09% |
310,583
+276,962
| +824% | +$48.1M |
2024 Q4
6 quarters
|
|
14
CVS Health
CVS
$107B
| $52.3M | 2.82% |
506,016
| – | – |
2016 Q1
41 quarters
|
|
15
Toyota
TM
$255B
| $49.1M | 2.64% |
291,689
-126
| -0% | -$23.9K |
2021 Q3
19 quarters
|
|
|
16
GE Aerospace
GE
$335B
| $44.8M | 2.41% |
119,925
-180,986
| -60% | -$56.7M |
2021 Q2
20 quarters
|
|
|
17
State Street Consumer Staples Select Sector SPDR ETF
XLP
$15.1B
| $40.6M | 2.18% |
488,831
+429,247
| +720% | +$35.8M |
2024 Q4
6 quarters
|
|
18
Sherwin-Williams
SHW
$83.1B
| $37.9M | 2.04% |
110,041
| – | – |
2023 Q4
10 quarters
|
|
19
Reliance Steel & Aluminium
RS
$21.2B
| $35.9M | 1.93% |
95,976
| – | – |
2023 Q4
10 quarters
|
|
20
Comcast
CMCSA
$86.6B
| $26.9M | 1.45% |
1,096,685
| – | – |
2023 Q4
10 quarters
|
|
|
21
Procter & Gamble
PG
$383B
| $24.3M | 1.3% |
165,402
-67,522
| -29% | -$9.8M |
2013 Q2
52 quarters
|
|
|
22
Walmart Inc
WMT
$996B
| $22.9M | 1.23% |
202,248
-418,331
| -67% | -$51.9M |
2023 Q4
10 quarters
|
|
23
State Street Consumer Discretionary Select Sector SPDR ETF
XLY
$22.8B
| $18.1M | 0.97% |
154,540
| – | – |
2024 Q4
6 quarters
|
|
Similar funds
SRB Corp's Q2 2026 Portfolio in Review
As of Q2 2026, SRB Corp held 23 positions worth $1.86B, up 14% from $1.63B the previous quarter. Its ten largest holdings account for 70% of the portfolio.
SRB Corp withdrew a net $87.6M in Q2 2026, reducing 7 holdings. Its largest reduction was Intel, cutting an estimated $109M.
By sector, the portfolio is most concentrated in Miscellaneous at 33% of assets, up from 24% a quarter earlier, followed by Technology and Financials.
Against the trend, SRB Corp added an estimated $59.3M to State Street Technology Select Sector SPDR ETF.
- SRB Corp added most to State Street Technology Select Sector SPDR ETF in Q2 2026, an estimated $59.3M increase.
- SRB Corp's biggest Q2 2026 reduction was Intel, cutting an estimated $109M.
- SRB Corp's ten largest holdings make up 70% of its $1.86B portfolio in Q2 2026.
- SRB Corp opened 0 new positions and closed 0 in Q2 2026.
- SRB Corp's portfolio value rose 14% quarter-over-quarter to $1.86B.
Based on SRB Corp's 13F filing for Q2 2026, filed 14 Aug 2026.