13F Filings History of SRB CORP

Latest 13F report
Q4 2025 - 13 Feb 2026
Value $
$1,821,787,217
Signature - Title
Frederick C. Childs - Vice President
Location
Boston, MA
Summary
This page shows a list of all the recent 13F filings made by SRB CORP. Form 13F is required to be filed within 45 days of the end of a calendar quarter. SRB CORP reported 23 stock holdings with total value $1,821,787,217 as of Q4 2025. Top holdings included MSFT, SAFT, XLK, RNR, and GE.

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Holdings Value
Quarter Holdings Value $ Bought Sold Net Top Holdings Form Type Filing Time
Q4 2025 23 $1,821,787,217 +$116,310,855 $0 +$116,310,855 MSFT, SAFT, XLK, RNR, GE 13F-HR 13 Feb 2026, 15:28
Q3 2025 23 $1,744,680,818 +$21,545,097 -$27,093,663 -$5,548,566 MSFT, SAFT, XLK, GE, RNR 13F-HR 14 Nov 2025, 10:05
Q2 2025 23 $1,666,796,524 +$88,328,890 -$112,474,736 -$24,145,846 MSFT, SAFT, AMZN, RNR, GE 13F-HR 14 Aug 2025, 10:26
Q1 2025 23 $1,533,166,485 +$301,699,902 -$457,090,409 -$155,390,507 MSFT, SAFT, MRK, XLK, RNR 13F-HR 13 May 2025, 19:38
Q4 2024 23 $1,743,759,075 +$106,515,014 -$103,199,930 +$3,315,084 MSFT, VGT, SAFT, MRK, RNR 13F-HR 14 Feb 2025, 08:45
Q3 2024 18 $1,784,024,523 +$86,765,288 -$22,355,020 +$64,410,268 MSFT, SAFT, MRK, RNR, INTC 13F-HR 14 Nov 2024, 14:58
Q2 2024 19 $1,687,273,330 +$203,953,025 -$228,803,492 -$24,850,467 MSFT, MRK, SAFT, INTC, RNR 13F-HR 14 Aug 2024, 13:53
Q1 2024 75 $1,805,800,012 +$46,322,158 -$102,701,702 -$56,379,544 MSFT, MRK, SAFT, INTC, RNR 13F-HR 14 May 2024, 12:26
Q4 2023 90 $1,692,787,596 +$515,915,308 -$683,899,816 -$167,984,508 MSFT, MRK, SAFT, INTC, CVS 13F-HR 14 Feb 2024, 11:41
Q3 2023 95 $1,651,115,664 +$12,156,498 -$12,430,966 -$274,468 MSFT, MRK, CVS, PG, SAFT 13F-HR 14 Nov 2023, 09:55
Q2 2023 97 $1,703,908,894 +$47,368,586 -$10,890,761 +$36,477,825 MSFT, MRK, CVS, PG, SAFT 13F-HR 14 Aug 2023, 11:39
Q1 2023 113 $1,588,745,105 +$12,883,391 -$35,337,027 -$22,453,636 MSFT, MRK, CVS, PG, SAFT 13F-HR 15 May 2023, 11:38
Q4 2022 94 $1,576,417,000 +$20,218,907 -$9,912,669 +$10,306,238 MSFT, MRK, CVS, PG, SAFT 13F-HR 14 Feb 2023, 12:36
Q3 2022 98 $1,433,589,000 +$108,221,185 -$61,321,351 +$46,899,834 MSFT, CVS, MRK, SAFT, PG 13F-HR 14 Nov 2022, 09:59
Q2 2022 64 $1,543,109,000 +$16,643,327 -$82,202,740 -$65,559,413 MSFT, CVS, MRK, SAFT, PG 13F-HR 12 Aug 2022, 12:18
Q1 2022 117 $1,798,330,000 +$138,719,022 -$179,989,952 -$41,270,930 MSFT, CVS, SAFT, MRK, PG 13F-HR 13 May 2022, 09:12
Q4 2021 118 $1,916,135,000 +$238,358,911 -$132,755,124 +$105,603,787 MSFT, CVS, PG, SAFT, MRK 13F-HR 14 Feb 2022, 10:20
Q3 2021 96 $1,662,105,000 +$252,582,229 -$168,397,113 +$84,185,116 MSFT, CVS, RDSB, MRK, SAFT 13F-HR 12 Nov 2021, 09:47
Q2 2021 81 $1,541,751,000 +$231,460,166 -$196,061,743 +$35,398,423 MSFT, CVS, MRK, RDSB, SAFT 13F-HR 13 Aug 2021, 10:22
Q1 2021 90 $1,464,550,000 +$173,851,651 -$166,833,323 +$7,018,328 MSFT, CVS, INTC, VOO, MRK 13F-HR 14 May 2021, 09:49
Q4 2020 158 $1,358,695,000 +$335,649,093 -$238,385,310 +$97,263,783 MSFT, INTC, VOO, MRK, CVS 13F-HR 12 Feb 2021, 09:49
Q3 2020 145 $1,195,248,000 +$38,561,700 -$24,295,953 +$14,265,747 MSFT, INTC, MRK, CVS, SAFT 13F-HR 13 Nov 2020, 09:51
Q2 2020 143 $1,222,623,000 +$33,533,036 -$16,580,383 +$16,952,653 MSFT, INTC, MRK, CVS, SAFT 13F-HR 14 Aug 2020, 10:01
Q1 2020 169 $1,074,555,000 +$24,984,815 -$13,233,633 +$11,751,182 MSFT, INTC, MRK, SAFT, CVS 13F-HR 14 May 2020, 12:15
Q4 2019 146 $1,237,192,000 +$26,176,838 -$14,463,623 +$11,713,215 MSFT, INTC, MRK, CVS, SAFT 13F-HR 14 Feb 2020, 16:59
Q3 2019 159 $1,138,444,000 +$42,065,543 -$23,910,754 +$18,154,789 MSFT, INTC, SAFT, MRK, CVS 13F-HR 14 Nov 2019, 09:41
Q2 2019 168 $1,072,100,000 +$34,113,711 -$44,074,763 -$9,961,052 MSFT, INTC, MRK, SAFT, XOM 13F-HR 14 Aug 2019, 09:48
Q1 2019 119 $1,062,941,000 +$56,280,956 -$31,629,003 +$24,651,953 INTC, MSFT, MRK, SAFT, XOM 13F-HR 14 May 2019, 11:44
Q4 2018 147 $943,468,000 +$62,161,293 -$51,342,893 +$10,818,400 INTC, MSFT, MRK, SAFT, XOM 13F-HR 14 Feb 2019, 12:11
Q3 2018 165 $1,004,118,000 +$38,025,789 -$14,420,856 +$23,604,933 MSFT, INTC, SAFT, MRK, XOM 13F-HR 14 Nov 2018, 09:47
Q2 2018 169 $911,706,000 +$97,016,737 -$17,528,589 +$79,488,148 INTC, MSFT, SAFT, MRK, XOM 13F-HR 14 Aug 2018, 09:42
Q1 2018 166 $790,753,000 +$40,254,531 -$38,846,780 +$1,407,751 INTC, MSFT, SAFT, MRK, XOM 13F-HR 14 May 2018, 11:06
Q4 2017 174 $778,413,000 +$41,245,398 -$79,089,720 -$37,844,322 INTC, MSFT, SAFT, MRK, XOM 13F-HR 14 Feb 2018, 12:34
Q3 2017 177 $757,192,000 +$30,403,791 -$11,545,698 +$18,858,093 INTC, MSFT, SAFT, XOM, MRK 13F-HR 14 Nov 2017, 12:23
Q2 2017 172 $697,482,000 +$15,863,270 -$17,707,855 -$1,844,585 INTC, MSFT, SAFT, MRK, XOM 13F-HR 14 Aug 2017, 17:01
Q1 2017 172 $705,323,000 +$4,301,049 -$4,500,799 -$199,750 INTC, MSFT, SAFT, MRK, XOM 13F-HR 15 May 2017, 12:26
Q4 2016 170 $720,512,000 +$24,295,288 -$3,714,982 +$20,580,306 INTC, MSFT, SAFT, TGT, XOM 13F-HR 15 Feb 2017, 16:58
Q3 2016 174 $684,462,000 +$3,653,729 -$6,449,330 -$2,795,601 INTC, MSFT, SAFT, MRK, TGT 13F-HR 15 Nov 2016, 12:15
Q2 2016 182 $653,057,000 +$12,471,029 -$3,695,857 +$8,775,172 INTC, MSFT, SAFT, XOM, TGT 13F-HR 15 Aug 2016, 16:33
Q1 2016 173 $635,131,000 +$8,266,142 -$3,595,293 +$4,670,849 INTC, TGT, MSFT, SAFT, XOM 13F-HR 13 May 2016, 12:52
Q4 2015 145 $616,270,000 +$1,190,818 -$153,104,388 -$151,913,570 INTC, MSFT, TGT, SAFT, XOM 13F-HR 12 Feb 2016, 16:41
Q3 2015 162 $728,240,000 +$22,789,142 -$3,658,738 +$19,130,404 TGT, INTC, MSFT, SAFT, XOM 13F-HR 13 Nov 2015, 12:21
Q2 2015 186 $754,645,000 +$51,376,711 -$8,520,438 +$42,856,273 TGT, INTC, MSFT, MRK, SAFT Restatement 14 Aug 2015, 12:46
Q1 2015 165 $714,354,000 +$45,468,718 -$6,126,855 +$39,341,863 TGT, INTC, SAFT, MRK, MSFT 13F-HR 15 May 2015, 08:09
Q4 2014 185 $703,122,000 +$21,188,133 -$40,662,168 -$19,474,035 INTC, TGT, SAFT, MSFT, MRK 13F-HR 17 Feb 2015, 17:20
Q3 2014 187 $688,929,000 +$33,406,777 $0 +$33,406,777 INTC, MSFT, MRK, TGT, SAFT 13F-HR 14 Nov 2014, 12:07
Q2 2014 14 $626,723,000 $0 $0 $0 INTC, MRK, TGT, MSFT, SAFT 13F-HR 14 Aug 2014, 15:09
Q1 2014 14 $610,362,000 +$168,790,487 -$664,228 +$168,126,259 INTC, TGT, MRK, SAFT, MSFT 13F-HR 14 May 2014, 14:33
Q4 2013 13 $438,088,000 $0 $0 $0 SAFT, MRK, MSFT, INTC, TGT 13F-HR 14 Feb 2014, 10:32