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Livermore
Livermore
ZHEN

Weybosset Research & Management LLC

SEC CIK
0001280604
Latest filing
Jul 28, 2026

The latest 13F from Weybosset Research & Management LLC covers Q2 2026 (filed Jul 28, 2026): 32 long positions worth $380.9M. The top 10 holdings make up 61.5% of the portfolio, and the largest is Keysight Technologies, Inc. (KEYS) at 9.1%. Livermore has 21 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
11
Est. +$2.92M
Reduced
13
Est. −$3.96M
Sold out
1
Est. −$896.1K

Top 5 holdings

Share of this quarter's portfolio value

  1. KEYSKeysight Technologies, Inc.
    9.1%$34.5MHistory
  2. FTAIFTAI Aviation Ltd.
    8.6%$32.7MHistory
  3. DEDeere & Co
    7.7%$29.2MHistory
  4. CMICummins Inc
    7.0%$26.5MHistory
  5. AGMFederal Agricultural Mortgage Corp
    5.5%$20.8MHistory

Share of portfolio

Top 5 holdings and the other 27 positions, by share of portfolio value

  1. KEYS9.1%
  2. FTAI8.6%
  3. DE7.7%
  4. CMI7.0%
  5. AGM5.5%
  6. Other 27 positions62.3%

Biggest buys

New and added positions, by estimated amount bought

  1. AZA2Z CUST2MATE Solutions Corp.
    +$1.68MAddedHistory
  2. CPRTCopart Inc
    +$218.1KAddedHistory
  3. LHLabcorp Holdings Inc.
    +$191.0KAddedHistory
  4. CNICanadian National Railway Co
    +$173.5KAddedHistory
  5. FTAIFTAI Aviation Ltd.
    +$167.5KAddedHistory

Largest weight increases

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

  1. AGMFederal Agricultural Mortgage Corp
    +1.01 pp4.4% → 5.5%History
  2. CNICanadian National Railway Co
    +0.19 pp2.6% → 2.8%History
  3. OZKBank OZK
    +0.15 pp3.2% → 3.3%History
  4. AMZNAmazon Com Inc
    +0.12 pp2.7% → 2.8%History
  5. FTAIFTAI Aviation Ltd.
    +0.09 pp8.5% → 8.6%History

Biggest sells

Reduced and sold-out positions, by estimated amount sold

  1. KEYSKeysight Technologies, Inc.
    −$1.03MReducedHistory
  2. EXPEagle Materials Inc
    −$923.9KReducedHistory
  3. XOMExxonMobil Holdings Corp
    −$896.1KSold outHistory
  4. CMICummins Inc
    −$559.9KReducedHistory
  5. BRK.BBerkshire Hathaway Inc
    −$406.8KReducedHistory

Largest weight decreases

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

  1. NYTNew York Times Co
    −1.25 pp5.0% → 3.8%History
  2. TJXTJX Companies Inc
    −0.90 pp6.2% → 5.3%History
  3. WMBWilliams Companies, Inc.
    −0.29 pp4.2% → 3.9%History
  4. BRK.BBerkshire Hathaway Inc
    −0.29 pp3.7% → 3.4%History
  5. XOMExxonMobil Holdings Corp
    −0.26 pp0.3% → 0.0%History

Metrics

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

Portfolio value
$380.9M
+$34.1M (+9.8%) vs. prior quarter
Positions
32
−1 vs. prior quarter
Top 10 concentration
61.5%
Top 10 as share of value
Turnover
0.8%
Q2 2026, one quarter
Average holding period
13.9 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

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

Peak $380.9M (Q2 2026)

Q1 2021: $242.4MQ2 2021: $246.1MQ3 2021: $246.1MQ4 2021: $268.4MQ2 2022: $202.5MQ3 2022: $227.4MQ4 2022: $258.8MQ1 2023: $265.0MQ2 2023: $273.1MQ3 2023: $251.2MQ4 2023: $282.3MQ1 2024: $131.1MQ2 2024: $266.8MQ3 2024: $295.5MQ4 2024: $293.9MQ1 2025: $286.2MQ2 2025: $290.9MQ3 2025: $309.8MQ4 2025: $324.3MQ1 2026: $346.8MQ2 2026: $380.9M
Q1 2021Q2 2026
13F filings of Weybosset Research & Management LLC by quarter
QuarterFiledPositionsValueTop 3 holdingsChangesFiling
Q2 2026Jul 28, 202632$380.9MKEYSFTAIDEvs. Q1 2026SEC
Q1 2026Apr 16, 202633$346.8MFTAIKEYSDEvs. Q4 2025SEC
Q4 2025Jan 6, 202635$324.3MFTAICPRTDEvs. Q3 2025SEC
Q3 2025Oct 20, 202535$309.8MCPRTDEFTAIvs. Q2 2025SEC
Q2 2025Jul 11, 202535$290.9MCPRTDEAGMvs. Q1 2025SEC
Q1 2025Apr 9, 202534$286.2MCPRTDEAGMvs. Q4 2024SEC
Q4 2024Jan 10, 202551$293.9MCPRTAGMDEvs. Q3 2024SEC
Q3 2024Oct 2, 202452$295.5MCPRTDEAGMvs. Q2 2024SEC
Q2 2024Jul 22, 202447$266.8MCPRTAGMDEvs. Q1 2024SEC
Q1 2024Apr 22, 202445$131.1MCMIJNJOZKvs. Q4 2023SEC
Q4 2023Jan 18, 202446$282.3MCPRTAGMDEvs. Q3 2023SEC
Q3 2023Oct 24, 202341$251.2MCPRTDEAGMvs. Q2 2023SEC
Q2 2023Jul 12, 202345$273.1MCPRTDEKEYSvs. Q1 2023SEC
Q1 2023Apr 14, 202360$265.0MCPRTDEKEYSvs. Q4 2022SEC
Q4 2022Feb 16, 202356$258.8MCPRTDEKEYSvs. Q3 2022SEC
Q3 2022Nov 7, 202253$227.4MCPRTDEKEYSvs. Q2 2022SEC
Q2 2022Aug 8, 202248$202.5MCPRTDEKEYS–SEC
Q4 2021Jan 19, 202250$268.4MCPRTKEYSDEvs. Q3 2021SEC
Q3 2021Oct 25, 202153$246.1MCPRTDEKEYSvs. Q2 2021SEC
Q2 2021Jul 26, 202150$246.1MCPRTDEKEYSvs. Q1 2021SEC
Q1 2021Apr 14, 202151$242.4MCPRTDEKEYS–SEC