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Livermore
Livermore
ZHEN

Winton Group Ltd

SEC CIK
0001612063
Latest filing
Aug 7, 2026

The latest 13F from Winton Group Ltd covers Q2 2026 (filed Aug 7, 2026): 1,137 long positions worth $3.09B. The top 10 holdings make up 17.4% of the portfolio, and the largest is Berkshire Hathaway Inc (BRK.A) at 5.3%. 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
493
Est. +$1.03B
Added
303
Est. +$659.9M
Reduced
333
Est. −$756.0M
Sold out
436
Est. −$916.1M

Top 5 holdings

Share of this quarter's portfolio value

  1. BRK.ABerkshire Hathaway Inc
    5.3%$162.5MHistory
  2. iShares Iboxx $ Investment Grade Corporate Bond ETF464287242
    2.5%$77.5M
  3. Vanguard Intermediate-Term Corporate Bond ETF92206C870
    1.6%$50.0M
  4. Invesco Exch Traded FD Tr II46138G508
    1.4%$44.4M
  5. SOLSSolstice Advanced Materials Inc.
    1.4%$42.9MHistory

Biggest buys

New and added positions, by estimated amount bought

  1. iShares Iboxx $ Investment Grade Corporate Bond ETF464287242
    +$77.5MNew
  2. Vanguard Intermediate-Term Corporate Bond ETF92206C870
    +$50.0MNew
  3. KLACKLA Corp
    +$38.8MAddedConverted for a 10-for-1 splitHistory
  4. CRWDCrowdStrike Holdings, Inc.
    +$28.5MNewHistory
  5. PSAPublic Storage
    +$27.8MNewHistory

Largest weight increases

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

  1. iShares Iboxx $ Investment Grade Corporate Bond ETF464287242
    +2.51 pp0.0% → 2.5%
  2. Vanguard Intermediate-Term Corporate Bond ETF92206C870
    +1.62 pp0.0% → 1.6%
  3. KLACKLA Corp
    +1.29 pp<0.1% → 1.3%History
  4. CRWDCrowdStrike Holdings, Inc.
    +0.92 pp0.0% → 0.9%History
  5. PSAPublic Storage
    +0.90 pp0.0% → 0.9%History

Biggest sells

Reduced and sold-out positions, by estimated amount sold

  1. DELLDell Technologies Inc.
    −$34.7MReducedHistory
  2. GEVGE Vernova Inc.
    −$34.3MReducedHistory
  3. NFLXNetflix Inc
    −$24.3MReducedHistory
  4. EAElectronic Arts Inc.
    −$20.8MSold outHistory
  5. HOLXHologic Inc
    −$20.8MSold outHistory

Largest weight decreases

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

  1. NFLXNetflix Inc
    −1.16 pp1.2% → <0.1%History
  2. GEVGE Vernova Inc.
    −0.80 pp1.3% → 0.5%History
  3. EAElectronic Arts Inc.
    −0.73 pp0.7% → 0.0%History
  4. HOLXHologic Inc
    −0.73 pp0.7% → 0.0%History
  5. MASIMasimo Corp
    −0.70 pp0.7% → 0.0%History

Metrics

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

Portfolio value
$3.09B
+$237.1M (+8.3%) vs. prior quarter
Positions
1,137
+57 vs. prior quarter
Top 10 concentration
17.4%
Top 10 as share of value
Turnover
56.3%
Q2 2026, one quarter
Average holding period
4.8 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 $3.09B (Q2 2026)

Q1 2021: $1.75BQ2 2021: $1.86BQ3 2021: $1.78BQ4 2021: $1.65BQ1 2022: $1.91BQ2 2022: $1.89BQ3 2022: $1.53BQ4 2022: $1.52BQ1 2023: $1.64BQ2 2023: $1.19BQ3 2023: $1.21BQ4 2023: $1.37BQ1 2024: $1.42BQ2 2024: $1.48BQ3 2024: $1.43BQ4 2024: $1.51BQ1 2025: $1.64BQ2 2025: $1.96BQ3 2025: $2.67BQ4 2025: $2.90BQ1 2026: $2.85BQ2 2026: $3.09B
Q1 2021Q2 2026
13F filings of Winton Group Ltd by quarter
QuarterFiledPositionsValueTop 3 holdingsChangesFiling
Q2 2026Aug 7, 20261,137$3.09BBRK.AiShares Iboxx $ Investment Grade Corporate Bond ETFVanguard Intermediate-Term Corporate Bond ETFvs. Q1 2026SEC
Q1 2026May 12, 20261,080$2.85BBRK.AInvesco Exch Traded FD Tr IIGEVvs. Q4 2025SEC
Q4 2025Feb 11, 2026911$2.90BBRK.AIBITiShares Trvs. Q3 2025SEC
Q3 2025Nov 13, 2025697$2.67BBRK.AiShares TrIBITvs. Q2 2025SEC
Q2 2025Aug 14, 2025807$1.96BBRK.AIBITFBTCvs. Q1 2025SEC
Q1 2025May 15, 2025656$1.64BBRK.AInvesco Exch Traded FD Tr IIORLYvs. Q4 2024SEC
Q4 2024Feb 12, 2025594$1.51BBRK.AGEVETRvs. Q3 2024SEC
Q3 2024Nov 12, 2024605$1.43BBRK.AGEVState Street Utilities Select Sector SPDR ETFvs. Q2 2024SEC
Q2 2024Aug 9, 2024558$1.48BBRK.AWMTUNPvs. Q1 2024SEC
Q1 2024May 14, 2024582$1.42BBRK.AState Street Technology Select Sector SPDR ETFDISvs. Q4 2023SEC
Q4 2023Feb 12, 2024729$1.37BBRK.AState Street Communication Services Select Sector SPDR ETFState Street Health Care Select Sector SPDR ETFvs. Q3 2023SEC
Q3 2023Nov 13, 2023756$1.21BBRK.AState Street Communication Services Select Sector SPDR ETFState Street Health Care Select Sector SPDR ETFvs. Q2 2023SEC
Q2 2023Aug 14, 2023745$1.19BBRK.AState Street Communication Services Select Sector SPDR ETFState Street Industrial Select Sector SPDR ETFvs. Q1 2023SEC
Q1 2023May 12, 2023941$1.64BBRK.AState Street Health Care Select Sector SPDR ETFState Street Communication Services Select Sector SPDR ETFvs. Q4 2022SEC
Q4 2022Feb 14, 2023902$1.52BBRK.AState Street Financial Select Sector SPDR ETFState Street Technology Select Sector SPDR ETFvs. Q3 2022SEC
Q3 2022Nov 10, 2022921$1.53BBRK.AState Street Health Care Select Sector SPDR ETFState Street Industrial Select Sector SPDR ETFvs. Q2 2022SEC
Q2 2022Aug 10, 2022931$1.89BBRK.AState Street Technology Select Sector SPDR ETFState Street Health Care Select Sector SPDR ETFvs. Q1 2022SEC
Q1 2022May 11, 2022936$1.91BBRK.AState Street Technology Select Sector SPDR ETFState Street Financial Select Sector SPDR ETFvs. Q4 2021SEC
Q4 2021Feb 10, 2022989$1.65BBRK.AiShares TrCMEvs. Q3 2021SEC
Q3 2021Oct 28, 20211,315$1.78BBRK.AiShares TrNVDAvs. Q2 2021SEC
Q2 2021Aug 10, 20211,409$1.86BBRK.AState Street Energy Select Sector SPDR ETFState Street Industrial Select Sector SPDR ETFvs. Q1 2021SEC
Q1 2021Jul 21, 20211,360$1.75BBRK.AState Street Industrial Select Sector SPDR ETFState Street Financial Select Sector SPDR ETF–SEC