Skip to main content
Livermore
Livermore
ZHEN

Mathes Company, Inc.

SEC CIK
0001389223
Latest filing
Aug 11, 2026

The latest 13F from Mathes Company, Inc. covers Q2 2026 (filed Aug 11, 2026): 129 long positions worth $321.8M. The top 10 holdings make up 42.8% of the portfolio, and the largest is GE Vernova Inc. (GEV) at 6.3%. 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
5
Est. +$1.15M
Added
26
Est. +$5.46M
Reduced
34
Est. −$1.89M
Sold out
2
Est. −$537.0K

Top 5 holdings

Share of this quarter's portfolio value

  1. GEVGE Vernova Inc.
    6.3%$20.4MHistory
  2. iShares Tr464287549
    6.3%$20.2M
  3. GOOGLAlphabet Inc.
    4.8%$15.5MHistory
  4. CATCaterpillar Inc
    4.4%$14.2MHistory
  5. NVDANVIDIA Corp
    4.0%$13.0MHistory

Share of portfolio

Top 5 holdings and the other 124 positions, by share of portfolio value

  1. GEV6.3%
  2. iShares Tr6.3%
  3. GOOGL4.8%
  4. CAT4.4%
  5. NVDA4.0%
  6. Other 124 positions74.1%

Biggest buys

New and added positions, by estimated amount bought

  1. State Street Financial Select Sector SPDR ETF81369Y605
    +$2.02MAdded
  2. NOWServiceNow, Inc.
    +$687.4KAddedHistory
  3. AMZNAmazon Com Inc
    +$464.7KAddedHistory
  4. Vanguard Morningstar Large-Cap ETF922908637
    +$296.1KAdded
  5. TXNTexas Instruments Inc
    +$291.0KNewHistory

Largest weight increases

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

  1. State Street Financial Select Sector SPDR ETF81369Y605
    +0.61 pp0.2% → 0.8%
  2. GOOGLAlphabet Inc.
    +0.31 pp4.5% → 4.8%History
  3. NOWServiceNow, Inc.
    +0.15 pp0.3% → 0.5%History
  4. LRCXLam Research Corp
    +0.10 pp0.1% → 0.2%History
  5. LLYEli Lilly & Co
    +0.09 pp0.2% → 0.3%History

Biggest sells

Reduced and sold-out positions, by estimated amount sold

  1. MMM3M Co
    −$368.9KReducedHistory
  2. BCATBlackRock Capital Allocation Term Trust
    −$354.5KReducedHistory
  3. Blackstone Group LP09253U108
    −$281.0KSold out
  4. ABTAbbott Laboratories
    −$256.0KSold outHistory
  5. iShares U.S. Medical Devices ETF464288810
    −$237.3KReduced

Largest weight decreases

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

  1. GEHCGE HealthCare Technologies Inc.
    −0.29 pp1.1% → 0.8%History
  2. TAT&T Inc.
    −0.28 pp0.7% → 0.4%History
  3. PHParker-Hannifin Corp
    −0.18 pp2.5% → 2.3%History
  4. WABWestinghouse Air Brake Technologies Corp
    −0.17 pp2.0% → 1.8%History
  5. DHRDanaher Corp
    −0.16 pp0.9% → 0.8%History

Metrics

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

Portfolio value
$321.8M
+$48.1M (+17.6%) vs. prior quarter
Positions
129
+3 vs. prior quarter
Top 10 concentration
42.8%
Top 10 as share of value
Turnover
0.8%
Q2 2026, one quarter
Average holding period
11.8 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

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

Peak $321.8M (Q2 2026)

Q1 2021: $259.0MQ2 2021: $277.9MQ3 2021: $269.5MQ4 2021: $290.4MQ1 2022: $257.9MQ2 2022: $205.7MQ3 2022: $179.4MQ4 2022: $198.2MQ2 2023: $228.6MQ3 2023: $215.5MQ4 2023: $242.7MQ1 2024: $266.9MQ2 2024: $275.5MQ3 2024: $283.5MQ4 2024: $274.0MQ1 2025: $245.9MQ2 2025: $269.6MQ3 2025: $278.5MQ4 2025: $280.4MQ1 2026: $273.7MQ2 2026: $321.8M
Q1 2021Q2 2026
13F filings of Mathes Company, Inc. by quarter
QuarterFiledPositionsValueTop 3 holdingsChangesFiling
Q2 2026Aug 11, 2026129$321.8MGEViShares TrGOOGLvs. Q1 2026SEC
Q1 2026May 8, 2026126$273.7MGEViShares TrGOOGLvs. Q4 2025SEC
Q4 2025Feb 9, 2026126$280.4MiShares TrGOOGLNVDAvs. Q3 2025SEC
Q3 2025Nov 12, 2025125$278.5MiShares TrNVDAAAPLvs. Q2 2025SEC
Q2 2025Aug 5, 2025122$269.6MiShares TrNVDAAAPLvs. Q1 2025SEC
Q1 2025May 1, 2025123$245.9MiShares TrAAPLAMZNvs. Q4 2024SEC
Q4 2024Jan 31, 2025124$274.0MiShares TrAAPLNVDAvs. Q3 2024SEC
Q3 2024Oct 29, 2024127$283.5MiShares TrAAPLNVDAvs. Q2 2024SEC
Q2 2024Aug 12, 2024128$275.5MNVDAiShares TrAAPLvs. Q1 2024SEC
Q1 2024May 2, 2024132$266.9MiShares TrAAPLNVDAvs. Q4 2023SEC
Q4 2023Jan 30, 2024129$242.7MAAPLiShares TrAMZNvs. Q3 2023SEC
Q3 2023Oct 26, 2023124$215.5MAAPLiShares TrAMZNvs. Q2 2023SEC
Q2 2023Jul 25, 2023125$228.6MAAPLiShares TrNVDA–SEC
Q4 2022Jan 25, 2023127$198.2MAAPLiShares TrVanguard Morningstar Growth ETFvs. Q3 2022SEC
Q3 2022Oct 18, 2022125$179.4MAAPLiShares TrAMZNvs. Q2 2022SEC
Q2 2022Aug 1, 2022126$205.7MAAPLiShares TrGOOGLvs. Q1 2022SEC
Q1 2022Jun 15, 2022128$257.9MAAPLiShares TrAMZNvs. Q4 2021SEC
Q4 2021Feb 4, 2022131$290.4MAAPLiShares TrAMZNvs. Q3 2021SEC
Q3 2021Oct 29, 2021124$269.5MiShares TrAAPLAMZNvs. Q2 2021SEC
Q2 2021Jul 20, 2021124$277.9MiShares TrAAPLAMZNvs. Q1 2021SEC
Q1 2021Apr 28, 2021124$259.0MiShares TrAAPLAMZN–SEC