SRB CORP

CIK 0001496228 · BOSTON, MA · Quarter end: 2026-06-30 · Filed on: 2026-08-14 · Open the SEC source

SRB CORP reported 23 positions worth $1.86B as of June 30, 2026 (13F filed August 14, 2026). Largest holding: XLK (12.3%).

Portfolio Value (AUM)Total value of the fund's US stock portfolio reported to the SEC.
$1.86B
2026 Q2
Positions
23
Top-10 ConcentrationHow much of the portfolio sits in the 10 largest holdings. High = concentrated bets.
70.3%
Est. Net Flow (Q)
2026 Q2
10 / 23 positions shown
#SymbolCompanyTypeValue% Port.Shares1YYTD
1XLKSELECT SECTOR SPDR TRSH$228.7M12.30%1,200,431
2MSFTMICROSOFT CORPSH$212.0M11.40%568,388
3INTCINTEL CORPSH$149.0M8.02%1,067,407
4SAFTSAFETY INS GROUP INCSH$134.3M7.23%1,794,655
5RNRRENAISSANCERE HLDGS LTDSH$123.1M6.62%388,478
6AMZNAMAZON COM INCSH$107.4M5.77%450,434
7GWWWW GRAINGER INCSH$91.0M4.89%66,861
8XLVSELECT SECTOR SPDR TRSH$88.3M4.75%556,818
9XLBSELECT SECTOR SPDR TRSH$87.9M4.73%1,729,580
10XLCSELECT SECTOR SPDR TRSH$85.8M4.61%800,774

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Read the 2026-Q2 quarterly report · 13F Filing Calendar

Frequently Asked Questions

What stocks does SRB CORP hold as of Q2 2026?

SRB CORP reported 23 positions worth $1.86B in its Q2 2026 13F filing. Largest positions: XLK (12.3%), MSFT (11.4%), INTC (8.0%), SAFT (7.2%) and RNR (6.6%).

What did SRB CORP buy in Q2 2026?

No previous quarter is available yet; the comparison appears with the next filing.

What did SRB CORP sell in Q2 2026?

No previous quarter is available yet.

13F data shows quarter-end positions, is delayed by up to 45 days and covers only long positions in US-listed securities; short positions, most derivatives and non-US assets are not reported.