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Livermore
Livermore
ZHEN

Mount Vernon Associates Inc

SEC CIK
0000799003
Latest filing
Jul 24, 2026

The latest 13F from Mount Vernon Associates Inc covers Q2 2026 (filed Jul 24, 2026): 62 long positions worth $153.4M. The top 10 holdings make up 56.9% of the portfolio, and the largest is Apple Inc. (AAPL) at 10.6%. 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
6
Est. +$3.76M
Added
2
Est. +$82.9K
Reduced
36
Est. −$9.84M
Sold out
4
Est. −$3.62M

Top 5 holdings

Share of this quarter's portfolio value

  1. AAPLApple Inc.
    10.6%$16.2MHistory
  2. GOOGAlphabet Inc.
    8.6%$13.2MHistory
  3. AMZNAmazon Com Inc
    6.3%$9.67MHistory
  4. COSTCostco Wholesale Corp
    5.6%$8.59MHistory
  5. MSFTMicrosoft Corp
    5.3%$8.12MHistory

Biggest buys

New and added positions, by estimated amount bought

  1. HONHoneywell International Inc
    +$1.29MNewHistory
  2. HONAHoneywell Aerospace Inc.
    +$1.27MNewHistory
  3. CMPSCOMPASS Pathways plc
    +$538.0KNewHistory
  4. IRENIREN Ltd
    +$240.0KNewHistory
  5. GOOGLAlphabet Inc.
    +$214.0KNewHistory

Largest weight increases

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

  1. HONHoneywell International Inc
    +0.84 pp0.0% → 0.8%History
  2. HONAHoneywell Aerospace Inc.
    +0.83 pp0.0% → 0.8%History
  3. CMPSCOMPASS Pathways plc
    +0.35 pp0.0% → 0.4%History
  4. IRENIREN Ltd
    +0.16 pp0.0% → 0.2%History
  5. LLYEli Lilly & Co
    +0.14 pp0.6% → 0.7%History

Biggest sells

Reduced and sold-out positions, by estimated amount sold

  1. HONHoneywell International Inc
    −$2.61MSold outHistory
  2. GOOGAlphabet Inc.
    −$860.3KReducedHistory
  3. Du Pont E I de Nemours & Co263534109
    −$850.7KReduced
  4. AAPLApple Inc.
    −$656.8KReducedHistory
  5. AMDAdvanced Micro Devices Inc
    −$609.8KReducedHistory

Largest weight decreases

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

  1. HONHoneywell International Inc
    −1.84 pp1.8% → 0.0%History
  2. COSTCostco Wholesale Corp
    −1.24 pp6.8% → 5.6%History
  3. NFLXNetflix Inc
    −1.03 pp2.9% → 1.9%History
  4. TSCOTractor Supply Co
    −0.84 pp2.1% → 1.3%History
  5. METAMeta Platforms, Inc.
    −0.74 pp5.3% → 4.6%History

Metrics

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

Portfolio value
$153.4M
+$11.9M (+8.4%) vs. prior quarter
Positions
62
+2 vs. prior quarter
Top 10 concentration
56.9%
Top 10 as share of value
Turnover
2.6%
Q2 2026, one quarter
Average holding period
19.6 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 $153.4M (Q2 2026)

Q1 2021: $101.8MQ2 2021: $109.1MQ3 2021: $109.1MQ4 2021: $115.5MQ1 2022: $103.1MQ2 2022: $82.0MQ3 2022: $76.8MQ4 2022: $77.8MQ1 2023: $84.6MQ2 2023: $94.1MQ3 2023: $90.5MQ4 2023: $102.0MQ1 2024: $117.8MQ2 2024: $112.8MQ3 2024: $126.0MQ4 2024: $128.3MQ1 2025: $122.6MQ2 2025: $138.4MQ3 2025: $143.3MQ4 2025: $148.7MQ1 2026: $141.5MQ2 2026: $153.4M
Q1 2021Q2 2026
13F filings of Mount Vernon Associates Inc by quarter
QuarterFiledPositionsValueTop 3 holdingsChangesFiling
Q2 2026Jul 24, 202662$153.4MAAPLGOOGAMZNvs. Q1 2026SEC
Q1 2026Apr 28, 202660$141.5MAAPLGOOGCOSTvs. Q4 2025SEC
Q4 2025Jan 22, 202660$148.7MAAPLGOOGMSFTvs. Q3 2025SEC
Q3 2025Oct 24, 202555$143.3MAAPLMSFTGOOGvs. Q2 2025SEC
Q2 2025Jul 22, 202555$138.4MAAPLMSFTMETAvs. Q1 2025SEC
Q1 2025Apr 23, 202552$122.6MAAPLCOSTMSFTvs. Q4 2024SEC
Q4 2024Jan 14, 202550$128.3MAAPLMSFTAMZNvs. Q3 2024SEC
Q3 2024Oct 15, 202453$126.0MAAPLMSFTCOSTvs. Q2 2024SEC
Q2 2024Jul 19, 202453$112.8MAAPLMSFTCOSTvs. Q1 2024SEC
Q1 2024Apr 22, 202453$117.8MAAPLMSFTAMZNvs. Q4 2023SEC
Q4 2023Jan 26, 202452$102.0MAAPLMSFTCOSTvs. Q3 2023SEC
Q3 2023Oct 24, 202350$90.5MAAPLMSFTCOSTvs. Q2 2023SEC
Q2 2023Jul 24, 202350$94.1MAAPLMSFTAMZNvs. Q1 2023SEC
Q1 2023Apr 20, 202351$84.6MAAPLMSFTCOSTvs. Q4 2022SEC
Q4 2022Jan 23, 202350$77.8MAAPLMSFTCOSTvs. Q3 2022SEC
Q3 2022Oct 21, 202248$76.8MAAPLMSFTAMZNvs. Q2 2022SEC
Q2 2022Jul 22, 202253$82.0MAAPLMSFTCOSTvs. Q1 2022SEC
Q1 2022Apr 25, 202252$103.1MAAPLAMZNMSFTvs. Q4 2021SEC
Q4 2021Jan 25, 202256$115.5MAAPLMSFTAMZNvs. Q3 2021SEC
Q3 2021Oct 20, 202157$109.1MAAPLAMZNPYPLvs. Q2 2021SEC
Q2 2021Jul 28, 202157$109.1MAAPLAMZNPYPLvs. Q1 2021SEC
Q1 2021Apr 21, 202156$101.8MAAPLAMZNPYPL–SEC