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Livermore
Livermore
ZHEN

SRB Corp

SEC CIK
0001496228
Latest filing
Aug 14, 2026

The latest 13F from SRB Corp covers Q2 2026 (filed Aug 14, 2026): 23 long positions worth $1.86B. The top 10 holdings make up 70.3% of the portfolio, and the largest is State Street Technology Select Sector SPDR ETF at 12.3%. Livermore has 22 filings on Form 13F from this institution, going back to Q1 2021.

What changed in Q2 2026

Share counts compared with Q1 2026: how many positions were new, added to, reduced or sold out, and the biggest buys and sells. Dollar amounts are estimated at the quarter-end prices implied by the filing.

Full comparison
New
0
Added
3
Est. +$153.1M
Reduced
7
Est. −$278.7M
Sold out
0

Top 5 holdings

Share of this quarter's portfolio value

  1. State Street Technology Select Sector SPDR ETF81369Y803
    12.3%$228.7M
  2. MSFTMicrosoft Corp
    11.4%$212.0MHistory
  3. INTCIntel Corp
    8.0%$149.0MHistory
  4. SAFTSafety Insurance Group Inc
    7.2%$134.3MHistory
  5. RNRRenaissancere Holdings Ltd
    6.6%$123.1MHistory

Biggest buys

New and added positions, by estimated amount bought

  1. State Street Technology Select Sector SPDR ETF81369Y803
    +$66.1MAdded
  2. State Street Industrial Select Sector SPDR ETF81369Y704
    +$51.3MAdded
  3. State Street Consumer Staples Select Sector SPDR ETF81369Y308
    +$35.7MAdded

Largest weight increases

New and added positions, by percentage points of the portfolio gained

  1. State Street Technology Select Sector SPDR ETF81369Y803
    +5.33 pp7.0% → 12.3%
  2. State Street Industrial Select Sector SPDR ETF81369Y704
    +2.76 pp0.3% → 3.1%
  3. State Street Consumer Staples Select Sector SPDR ETF81369Y308
    +1.88 pp0.3% → 2.2%

Biggest sells

Reduced and sold-out positions, by estimated amount sold

  1. INTCIntel Corp
    −$150.7MReducedHistory
  2. GEGeneral Electric Co
    −$67.6MReducedHistory
  3. WMTWalmart Inc.
    −$47.4MReducedHistory
  4. PGProcter & Gamble Co
    −$9.90MReducedHistory
  5. MSFTMicrosoft Corp
    −$2.67MReducedHistory

Largest weight decreases

Reduced and sold-out positions, by percentage points of the portfolio lost

  1. WMTWalmart Inc.
    −3.50 pp4.7% → 1.2%History
  2. GEGeneral Electric Co
    −2.83 pp5.2% → 2.4%History
  3. MSFTMicrosoft Corp
    −1.68 pp13.1% → 11.4%History
  4. TMToyota Motor Corp
    −1.05 pp3.7% → 2.6%History
  5. PGProcter & Gamble Co
    −0.76 pp2.1% → 1.3%History

Metrics

13F metrics for Q2 2026, computed only from the numbers in the filings. Definitions below.

Portfolio value
$1.86B
+$231.1M (+14.2%) vs. prior quarter
Positions
23
0 vs. prior quarter
Top 10 concentration
70.3%
Top 10 as share of value
Turnover
8.8%
Q2 2026, one quarter
Average holding period
13.7 quarters
Weighted by value

How these are calculated

  • Portfolio value: the market value of all long positions in the 13F, as reported at quarter end, excluding options.
  • Top 10 concentration: the combined value of the 10 largest positions as a share of portfolio value.
  • Turnover: the smaller of this quarter's estimated purchases and estimated sales, divided by the average of this and last quarter's portfolio value. Estimates multiply the change in shares by the quarter-end price implied by the filing (market value divided by shares); new positions use this quarter's value and sold-out positions last quarter's. Only positions reported in shares count, and it is not calculated when the previous quarter was not filed.
  • Average holding period: how many consecutive quarters each current position has been held (including this one; a quarter without the position or without a filing starts the count over), weighted by this quarter's value. Counting starts with the first 13F in Livermore (Q1 2021), so positions held before then are understated.

13F filings by quarter

22 quarters, going back to Q1 2021. Bars show each quarter's 13F portfolio value; quarters without a filing are left blank.

Peak $1.92B (Q4 2021)

Q1 2021: $1.46BQ2 2021: $1.54BQ3 2021: $1.66BQ4 2021: $1.92BQ1 2022: $1.80BQ2 2022: $1.54BQ3 2022: $1.43BQ4 2022: $1.58BQ1 2023: $1.59BQ2 2023: $1.70BQ3 2023: $1.65BQ4 2023: $1.69BQ1 2024: $1.81BQ2 2024: $1.69BQ3 2024: $1.78BQ4 2024: $1.74BQ1 2025: $1.53BQ2 2025: $1.67BQ3 2025: $1.74BQ4 2025: $1.82BQ1 2026: $1.63BQ2 2026: $1.86B
Q1 2021Q2 2026
13F filings of SRB Corp by quarter
QuarterFiledPositionsValueTop 3 holdingsChangesFiling
Q2 2026Aug 14, 202623$1.86BState Street Technology Select Sector SPDR ETFMSFTINTCvs. Q1 2026SEC
Q1 2026May 14, 202623$1.63BMSFTSAFTRNRvs. Q4 2025SEC
Q4 2025Feb 13, 202623$1.82BMSFTSAFTState Street Technology Select Sector SPDR ETFvs. Q3 2025SEC
Q3 2025Nov 14, 202523$1.74BMSFTSAFTState Street Technology Select Sector SPDR ETFvs. Q2 2025SEC
Q2 2025Aug 14, 202523$1.67BMSFTSAFTAMZNvs. Q1 2025SEC
Q1 2025May 14, 202523$1.53BMSFTSAFTMRKvs. Q4 2024SEC
Q4 2024Feb 14, 202523$1.74BMSFTVanguard Information Technology ETFSAFTvs. Q3 2024SEC
Q3 2024Nov 14, 202418$1.78BMSFTSAFTMRKvs. Q2 2024SEC
Q2 2024Aug 14, 202419$1.69BMSFTMRKSAFTvs. Q1 2024SEC
Q1 2024May 14, 202475$1.81BMSFTMRKSAFTvs. Q4 2023SEC
Q4 2023Feb 14, 202490$1.69BMSFTMRKSAFTvs. Q3 2023SEC
Q3 2023Nov 14, 202395$1.65BMSFTMRKCVSvs. Q2 2023SEC
Q2 2023Aug 14, 202397$1.70BMSFTMRKCVSvs. Q1 2023SEC
Q1 2023May 15, 2023113$1.59BMSFTMRKCVSvs. Q4 2022SEC
Q4 2022Feb 14, 202394$1.58BMSFTMRKCVSvs. Q3 2022SEC
Q3 2022Nov 14, 202298$1.43BMSFTCVSMRKvs. Q2 2022SEC
Q2 2022Aug 12, 202264$1.54BMSFTCVSMRKvs. Q1 2022SEC
Q1 2022May 13, 2022117$1.80BMSFTCVSSAFTvs. Q4 2021SEC
Q4 2021Feb 14, 2022118$1.92BMSFTCVSPGvs. Q3 2021SEC
Q3 2021Nov 12, 202196$1.66BMSFTCVSRoyal Dutch Shell PLCvs. Q2 2021SEC
Q2 2021Aug 13, 202181$1.54BMSFTCVSMRKvs. Q1 2021SEC
Q1 2021May 14, 202190$1.46BMSFTCVSINTC–SEC

13D and 13G filings

Companies where SRB Corp reports owning 5% or more on Schedule 13D or 13G, and its latest filings.

Current stakes of 5% or more

SRB Corp does not currently report owning 5% or more of any company.

Latest filings

6 filings on file made by SRB Corp or listing it as a reporting person, newest first.

Schedule 13D and 13G filings by SRB Corp
CompanyFiled (ET)FormStakeChangeEvent dateFiling
SAFTSafety Insurance Group IncJul 29, 20267:02 PM ET13G/A1.75%257.2K shares−10.52 ppfrom 12.27%Below 5%Jul 27, 2026SEC
SAFTSafety Insurance Group IncApr 13, 20269:24 PM ET13G/A12.27%1.79M shares–Mar 31, 2026SEC
SAFTSafety Insurance Group IncFeb 14, 202413G/AOld format–––SEC
SAFTSafety Insurance Group IncFeb 14, 202313G/AOld format–––SEC
SAFTSafety Insurance Group IncFeb 14, 202213G/AOld format–––SEC
SAFTSafety Insurance Group IncFeb 12, 202113G/AOld format–––SEC