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Livermore
Livermore
ZHEN

Arcataur Capital Management LLC

SEC CIK
0001987321
Latest filing
Jul 23, 2026

The latest 13F from Arcataur Capital Management LLC covers Q2 2026 (filed Jul 23, 2026): 105 long positions worth $403.5M. The top 10 holdings make up 70.2% of the portfolio, and the largest is iShares Core S&P 500 ETF at 27.1%. Livermore has 13 filings on Form 13F from this institution, going back to Q2 2023.

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
7
Est. +$1.70M
Added
35
Est. +$1.10M
Reduced
32
Est. −$3.74M
Sold out
5
Est. −$1.33M

Top 5 holdings

Share of this quarter's portfolio value

  1. iShares Core S&P 500 ETF464287200
    27.1%$109.4M
  2. iShares Core S&P Small Cap ETF464287804
    14.7%$59.3M
  3. iShares Core S&P Mid-Cap ETF464287507
    8.8%$35.4M
  4. Vanguard Ftse Developed Markets ETF921943858
    5.7%$22.9M
  5. Vanguard Ftse Emerging Markets ETF922042858
    3.8%$15.3M

Share of portfolio

Top 5 holdings and the other 100 positions, by share of portfolio value

  1. iShares Core S&P 500 ETF27.1%
  2. iShares Core S&P Small Cap ETF14.7%
  3. iShares Core S&P Mid-Cap ETF8.8%
  4. Vanguard Ftse Developed Markets ETF5.7%
  5. Vanguard Ftse Emerging Markets ETF3.8%
  6. Other 100 positions39.9%

Biggest buys

New and added positions, by estimated amount bought

  1. INTCIntel Corp
    +$293.2KNewHistory
  2. TXNTexas Instruments Inc
    +$292.7KNewHistory
  3. State Street Technology Select Sector SPDR ETF81369Y803
    +$285.8KNew
  4. FISVFiserv Inc
    +$263.3KAddedHistory
  5. BLDRBuilders FirstSource, Inc.
    +$212.5KNewHistory

Largest weight increases

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

  1. INTCIntel Corp
    +0.07 pp0.0% → 0.1%History
  2. TXNTexas Instruments Inc
    +0.07 pp0.0% → 0.1%History
  3. State Street Technology Select Sector SPDR ETF81369Y803
    +0.07 pp0.0% → 0.1%
  4. BLDRBuilders FirstSource, Inc.
    +0.05 pp0.0% → 0.1%History
  5. PNCPNC Financial Services Group, Inc.
    +0.05 pp0.0% → 0.1%History

Biggest sells

Reduced and sold-out positions, by estimated amount sold

  1. iShares Core S&P 500 ETF464287200
    −$1.14MReduced
  2. iShares Core S&P Small Cap ETF464287804
    −$628.2KReduced
  3. GSGoldman Sachs Group Inc
    −$447.0KReducedHistory
  4. HOLXHologic Inc
    −$414.5KSold outHistory
  5. HONHoneywell International Inc
    −$246.6KSold outHistory

Largest weight decreases

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

  1. iShares Tr46429B747
    −0.17 pp1.3% → 1.1%
  2. MSFTMicrosoft Corp
    −0.12 pp1.1% → 1.0%History
  3. HOLXHologic Inc
    −0.12 pp0.1% → 0.0%History
  4. GLDSPDR Gold Trust
    −0.11 pp0.3% → 0.2%History
  5. iShares MSCI Eafe ETF464287465
    −0.11 pp1.6% → 1.5%

Metrics

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

Portfolio value
$403.5M
+$44.1M (+12.3%) vs. prior quarter
Positions
105
+2 vs. prior quarter
Top 10 concentration
70.2%
Top 10 as share of value
Turnover
0.7%
Q2 2026, one quarter
Average holding period
12.7 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 (Q2 2023), so positions held before then are understated.

13F filings by quarter

13 quarters, going back to Q2 2023. Bars show each quarter's 13F portfolio value; quarters without a filing are left blank.

Peak $403.5M (Q2 2026)

Q2 2023: $244.4MQ3 2023: $239.4MQ4 2023: $262.8MQ1 2024: $278.3MQ2 2024: $280.5MQ3 2024: $295.6MQ4 2024: $296.7MQ1 2025: $293.4MQ2 2025: $320.0MQ3 2025: $340.2MQ4 2025: $349.3MQ1 2026: $359.4MQ2 2026: $403.5M
Q2 2023Q2 2026
13F filings of Arcataur Capital Management LLC by quarter
QuarterFiledPositionsValueTop 3 holdingsChangesFiling
Q2 2026Jul 23, 2026105$403.5MiShares Core S&P 500 ETFiShares Core S&P Small Cap ETFiShares Core S&P Mid-Cap ETFvs. Q1 2026SEC
Q1 2026Apr 22, 2026103$359.4MiShares Core S&P 500 ETFiShares Core S&P Small Cap ETFiShares Core S&P Mid-Cap ETFvs. Q4 2025SEC
Q4 2025Jan 27, 2026103$349.3MiShares Core S&P 500 ETFiShares Core S&P Small Cap ETFiShares Core S&P Mid-Cap ETFvs. Q3 2025SEC
Q3 2025Oct 22, 2025101$340.2MiShares Core S&P 500 ETFiShares Core S&P Small Cap ETFiShares Core S&P Mid-Cap ETFvs. Q2 2025SEC
Q2 2025Jul 23, 202599$320.0MiShares Core S&P 500 ETFiShares Core S&P Small Cap ETFiShares Core S&P Mid-Cap ETFvs. Q1 2025SEC
Q1 2025May 7, 202599$293.4MiShares Core S&P 500 ETFiShares Core S&P Small Cap ETFiShares Core S&P Mid-Cap ETFvs. Q4 2024SEC
Q4 2024Jan 28, 202596$296.7MiShares Core S&P 500 ETFiShares Core S&P Small Cap ETFiShares Core S&P Mid-Cap ETFvs. Q3 2024SEC
Q3 2024Oct 22, 202496$295.6MiShares Core S&P 500 ETFiShares Core S&P Small Cap ETFiShares Core S&P Mid-Cap ETFvs. Q2 2024SEC
Q2 2024Jul 24, 202498$280.5MiShares Core S&P 500 ETFiShares Core S&P Small Cap ETFiShares Core S&P Mid-Cap ETFvs. Q1 2024SEC
Q1 2024Apr 26, 202497$278.3MiShares Core S&P 500 ETFiShares Core S&P Small Cap ETFiShares Core S&P Mid-Cap ETFvs. Q4 2023SEC
Q4 2023Feb 7, 202498$262.8MiShares Core S&P 500 ETFiShares Core S&P Small Cap ETFiShares Core S&P Mid-Cap ETFvs. Q3 2023SEC
Q3 2023Oct 18, 202395$239.4MiShares Core S&P 500 ETFiShares Core S&P Small Cap ETFiShares Core S&P Mid-Cap ETFvs. Q2 2023SEC
Q2 2023Jul 26, 202395$244.4MiShares Core S&P 500 ETFiShares Core S&P Small Cap ETFiShares Core S&P Mid-Cap ETF–SEC