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Livermore
Livermore
ZHEN

Middleton & Co Inc

SEC CIK
0000919497
Latest filing
Aug 10, 2026

The latest 13F from Middleton & Co Inc covers Q2 2026 (filed Aug 10, 2026): 170 long positions worth $941.9M. The top 10 holdings make up 41.8% of the portfolio, and the largest is Alphabet Inc. (GOOGL) at 7.4%. Livermore has 23 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
11
Est. +$6.10M
Added
41
Est. +$16.0M
Reduced
80
Est. −$36.1M
Sold out
5
Est. −$1.34M

Top 5 holdings

Share of this quarter's portfolio value

  1. GOOGLAlphabet Inc.
    7.4%$70.0MHistory
  2. AAPLApple Inc.
    6.8%$63.7MHistory
  3. AMZNAmazon Com Inc
    6.1%$57.2MHistory
  4. AVGOBroadcom Inc.
    4.9%$45.8MHistory
  5. iShares Core S&P 500 ETF464287200
    3.8%$36.2M

Biggest buys

New and added positions, by estimated amount bought

  1. APHAmphenol Corp
    +$2.84MAddedHistory
  2. BMIBadger Meter Inc
    +$2.72MNewHistory
  3. UBERUber Technologies, Inc
    +$2.03MAddedHistory
  4. NVDANVIDIA Corp
    +$1.57MAddedHistory
  5. WCNWaste Connections, Inc.
    +$1.18MAddedHistory

Largest weight increases

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

  1. APHAmphenol Corp
    +0.38 pp0.3% → 0.6%History
  2. LLYEli Lilly & Co
    +0.30 pp1.4% → 1.7%History
  3. BMIBadger Meter Inc
    +0.29 pp0.0% → 0.3%History
  4. NVDANVIDIA Corp
    +0.27 pp1.5% → 1.7%History
  5. UBERUber Technologies, Inc
    +0.20 pp0.3% → 0.5%History

Biggest sells

Reduced and sold-out positions, by estimated amount sold

  1. GOOGLAlphabet Inc.
    −$4.25MReducedHistory
  2. PANWPalo Alto Networks Inc
    −$3.27MReducedHistory
  3. AVGOBroadcom Inc.
    −$2.82MReducedHistory
  4. ADBEAdobe Inc.
    −$1.59MReducedHistory
  5. MRKMerck & Co., Inc.
    −$1.53MReducedHistory

Largest weight decreases

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

  1. XOMExxonMobil Holdings Corp
    −0.59 pp2.2% → 1.7%History
  2. INTUIntuit Inc.
    −0.54 pp1.1% → 0.6%History
  3. COSTCostco Wholesale Corp
    −0.42 pp2.8% → 2.4%History
  4. CRMSalesforce, Inc.
    −0.30 pp1.3% → 1.0%History
  5. ADBEAdobe Inc.
    −0.28 pp0.5% → 0.3%History

Metrics

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

Portfolio value
$941.9M
+$65.0M (+7.4%) vs. prior quarter
Positions
170
+6 vs. prior quarter
Top 10 concentration
41.8%
Top 10 as share of value
Turnover
2.4%
Q2 2026, one quarter
Average holding period
19.7 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 $1.03B (Q4 2021)

Q1 2021: $887.4MQ2 2021: $922.6MQ3 2021: $934.3MQ4 2021: $1.03BQ1 2022: $937.0MQ2 2022: $780.5MQ3 2022: $657.2MQ4 2022: $674.8MQ1 2023: $695.9MQ2 2023: $754.1MQ3 2023: $723.7MQ4 2023: $801.8MQ1 2024: $867.1MQ2 2024: $860.7MQ3 2024: $905.0MQ4 2024: $905.1MQ1 2025: $856.0MQ2 2025: $890.3MQ3 2025: $925.3MQ4 2025: $941.8MQ1 2026: $876.9MQ2 2026: $941.9M
Q1 2021Q2 2026
13F filings of Middleton & Co Inc by quarter
QuarterFiledPositionsValueTop 3 holdingsChangesFiling
Q2 2026Aug 10, 2026170$941.9MGOOGLAAPLAMZNvs. Q1 2026SEC
Q1 2026May 8, 2026164$876.9MGOOGLAAPLAMZNvs. Q4 2025SEC
Q4 2025Jan 29, 2026163$941.8MGOOGLAAPLAMZNvs. Q3 2025SEC
Q3 2025Oct 29, 2025166$925.3MAAPLGOOGLAMZNvs. Q2 2025SEC
Q2 2025Aug 6, 2025161$890.3MAMZNAAPLGOOGLvs. Q1 2025SEC
Q1 2025May 9, 2025156$856.0MAAPLAMZNGOOGLvs. Q4 2024SEC
Q4 2024Feb 5, 2025158$905.1MAAPLAMZNGOOGLvs. Q3 2024SEC
Q3 2024Oct 23, 2024166$905.0MAAPLAMZNGOOGLvs. Q2 2024SEC
Q2 2024Aug 12, 2024164$860.7MAAPLAMZNGOOGLvs. Q1 2024SEC
Q1 2024May 14, 2024167$867.1MAMZNAAPLGOOGLvs. Q4 2023SEC
Q4 2023Feb 13, 2024157$801.8MAAPLAMZNGOOGLvs. Q3 2023SEC
Q3 2023Oct 26, 2023147$723.7MAAPLAMZNGOOGLvs. Q2 2023SEC
Q2 2023Jul 28, 2023153$754.1MAAPLAMZNGOOGLvs. Q1 2023SEC
Q1 2023Apr 28, 2023154$695.9MAAPLAMZNGOOGLvs. Q4 2022SEC
Q4 2022Feb 9, 2023156$674.8MAAPLAMZNGOOGLvs. Q3 2022SEC
Q3 2022Nov 2, 2022145$657.2MAAPLAMZNGOOGLvs. Q2 2022SEC
Q2 2022Jul 21, 2022152$780.5MAAPLAMZNGOOGLvs. Q1 2022SEC
Q1 2022May 12, 2022161$937.0MAAPLAMZNGOOGLvs. Q4 2021SEC
Q4 2021Feb 9, 2022161$1.03BAAPLAMZNGOOGLvs. Q3 2021SEC
Q3 2021Nov 8, 2021158$934.3MAMZNAAPLGOOGLvs. Q2 2021SEC
Q2 2021Aug 13, 2021155$922.6MAMZNAAPLGOOGLvs. Q1 2021SEC
Q1 2021May 6, 2021Amended152$887.4MAMZNAAPLGOOGL–SEC