13F

Investor

SRB CORP

CIK 0001496228 · filed 2026-05-14 · SEC filing

13F book

$1.63B

Positions

23

Largest name

13.1%

Microsoft Corp · MSFT

Est. mark

−$74.6M

Price effect on 23 names still held. Flow −$118.9M.
NameTickerSharesValueWeightEst. markChange
Microsoft CorpMSFT575.5K$213.1M13.1%−$65.3MCut−$122.1M
Safety Ins Group Inc1.79M$130.4M8.0%−$9.46MCut−$13.2M
Renaissancere Hldgs Ltd388.5K$115.5M7.1%$6.24MCut−$2.64M
Select Sector Spdr Tr853.4K$113.4M7.0%−$9.45MHeld
Intel CorpINTC2.15M$94.7M5.8%$15.5MCut$14.1M
Amazon Com IncAMZN450.4K$93.8M5.8%−$10.2MCut−$12.5M
Select Sector Spdr Tr800.8K$88.8M5.5%−$5.49MHeld
Select Sector Spdr Tr1.73M$86.4M5.3%$7.99MHeld
Ge Aerospace300.9K$85.4M5.2%−$7.3MCut−$28.5M
Select Sector Spdr Tr556.8K$81.6M5.0%−$4.56MHeld
Walmart Inc.WMT620.6K$77.1M4.7%$7.98MCut−$3.88M
Ww Grainger Inc66.9K$72.9M4.5%$5.47MCut$4.12M
Alphabet Inc230K$66.1M4.1%−$5.85MCut−$7.17M
Toyota Motor Corp291.8K$60.1M3.7%−$2.33MCut−$3.67M
Merck & Co., Inc.MRK463.3K$55.7M3.4%$6.96MCut$5.9M
Cvs Health CorpCVS506K$36.3M2.2%−$3.82MCut−$5.47M
Sherwin Williams CoSHW110K$35.3M2.2%−$382.9KCut−$1.04M
Procter And Gamble CoPG232.9K$33.6M2.1%$263.2KCut−$4.42M
Comcast Corp New1.1M$31.5M1.9%−$1.29MHeld
Reliance, Inc.RS96K$29.2M1.8%$1.44MCut$793K
Select Sector Spdr Tr154.5K$16.8M1.0%−$1.61MHeld
Select Sector Spdr Tr33.6K$5.44M0.3%$222.2KHeld
Select Sector Spdr Tr59.6K$4.88M0.3%$256.2KHeld

Positions as of Q1 2026. 13F filings arrive up to 45 days after quarter-end and omit shorts. Values are quarter-end marks, as filed. Estimated mark is the price effect on shares still held — not realized P&L or investment advice.