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Livermore
Livermore
ZHEN

Tarbox Family Office, Inc.

SEC CIK
0001599603
Latest filing
Aug 3, 2026

The latest 13F from Tarbox Family Office, Inc. covers Q2 2026 (filed Aug 3, 2026): 96 long positions worth $698.2M. The top 10 holdings make up 74.0% of the portfolio, and the largest is iShares Core S&P 500 ETF at 33.3%. 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
4
Est. +$8.58M
Added
13
Est. +$9.35M
Reduced
27
Est. −$12.7M
Sold out
3
Est. −$1.34M

Top 5 holdings

Share of this quarter's portfolio value

  1. iShares Core S&P 500 ETF464287200
    33.3%$232.4M
  2. iShares Core S&P Mid-Cap ETF464287507
    8.3%$57.7M
  3. American Centy ETF Tr025072604
    7.0%$48.9M
  4. J P Morgan Exchange Traded F46641Q670
    4.2%$29.2M
  5. American Centy ETF Tr025072877
    4.0%$27.8M

Share of portfolio

Top 5 holdings and the other 91 positions, by share of portfolio value

  1. iShares Core S&P 500 ETF33.3%
  2. iShares Core S&P Mid-Cap ETF8.3%
  3. American Centy ETF Tr7.0%
  4. J P Morgan Exchange Traded F4.2%
  5. American Centy ETF Tr4.0%
  6. Other 91 positions43.3%

Biggest buys

New and added positions, by estimated amount bought

  1. AVGOBroadcom Inc.
    +$8.12MNewHistory
  2. American Centy ETF Tr025072125
    +$6.37MAdded
  3. J P Morgan Exchange Traded F46641Q670
    +$1.14MAdded
  4. iShares Tr46436E569
    +$695.2KAdded
  5. iShares Tr46436E619
    +$418.7KAdded

Largest weight increases

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

  1. AVGOBroadcom Inc.
    +1.16 pp0.0% → 1.2%History
  2. American Centy ETF Tr025072125
    +0.87 pp1.9% → 2.8%
  3. iShares Tr46436E569
    +0.10 pp0.1% → 0.2%
  4. NVDANVIDIA Corp
    +0.03 pp0.0% → <0.1%History
  5. iShares Tr46436E619
    +0.03 pp0.2% → 0.3%

Biggest sells

Reduced and sold-out positions, by estimated amount sold

  1. iShares Core S&P Mid-Cap ETF464287507
    −$6.43MReduced
  2. iShares Core S&P 500 ETF464287200
    −$2.48MReduced
  3. American Centy ETF Tr025072604
    −$974.9KReduced
  4. IBITiShares Bitcoin Trust ETF
    −$908.5KSold outHistory
  5. iShares Core MSCI Eafe ETF46432F842
    −$601.8KReduced

Largest weight decreases

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

  1. iShares Core S&P Mid-Cap ETF464287507
    −0.86 pp9.1% → 8.3%
  2. iShares Core MSCI Eafe ETF46432F842
    −0.34 pp4.3% → 4.0%
  3. American Centy ETF Tr025072703
    −0.30 pp4.1% → 3.8%
  4. IBITiShares Bitcoin Trust ETF
    −0.15 pp0.1% → 0.0%History
  5. Vanguard Ftse Emerging Markets ETF922042858
    −0.08 pp1.8% → 1.8%

Metrics

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

Portfolio value
$698.2M
+$82.4M (+13.4%) vs. prior quarter
Positions
96
+1 vs. prior quarter
Top 10 concentration
74.0%
Top 10 as share of value
Turnover
2.1%
Q2 2026, one quarter
Average holding period
18.7 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 $698.2M (Q2 2026)

Q1 2021: $508.1MQ2 2021: $559.5MQ3 2021: $546.3MQ4 2021: $580.8MQ1 2022: $492.6MQ2 2022: $445.3MQ3 2022: $421.7MQ4 2022: $456.3MQ1 2023: $494.9MQ2 2023: $514.3MQ3 2023: $482.8MQ4 2023: $514.2MQ1 2024: $568.9MQ2 2024: $566.9MQ3 2024: $610.2MQ4 2024: $606.3MQ1 2025: $601.6MQ2 2025: $664.9MQ3 2025: $681.2MQ4 2025: $621.6MQ1 2026: $615.8MQ2 2026: $698.2M
Q1 2021Q2 2026
13F filings of Tarbox Family Office, Inc. by quarter
QuarterFiledPositionsValueTop 3 holdingsChangesFiling
Q2 2026Aug 3, 202696$698.2MiShares Core S&P 500 ETFiShares Core S&P Mid-Cap ETFAmerican Centy ETF Trvs. Q1 2026SEC
Q1 2026Apr 24, 202695$615.8MiShares Core S&P 500 ETFiShares Core S&P Mid-Cap ETFAmerican Centy ETF Trvs. Q4 2025SEC
Q4 2025Jan 21, 2026105$621.6MiShares Core S&P 500 ETFiShares Core S&P Mid-Cap ETFAmerican Centy ETF Trvs. Q3 2025SEC
Q3 2025Oct 24, 2025114$681.2MiShares Core S&P 500 ETFiShares Core S&P Mid-Cap ETFAmerican Centy ETF Trvs. Q2 2025SEC
Q2 2025Aug 12, 2025116$664.9MiShares Core S&P 500 ETFiShares Core S&P Mid-Cap ETFAmerican Centy ETF Trvs. Q1 2025SEC
Q1 2025May 8, 2025107$601.6MiShares Core S&P 500 ETFiShares Core S&P Mid-Cap ETFAmerican Centy ETF Trvs. Q4 2024SEC
Q4 2024Jan 17, 2025107$606.3MiShares Core S&P 500 ETFiShares Core S&P Mid-Cap ETFAmerican Centy ETF Trvs. Q3 2024SEC
Q3 2024Oct 23, 2024109$610.2MiShares Core S&P 500 ETFiShares Core S&P Mid-Cap ETFAmerican Centy ETF Trvs. Q2 2024SEC
Q2 2024Jul 17, 2024104$566.9MiShares Core S&P 500 ETFiShares Core S&P Mid-Cap ETFAmerican Centy ETF Trvs. Q1 2024SEC
Q1 2024Apr 16, 2024104$568.9MiShares Core S&P 500 ETFiShares Core S&P Mid-Cap ETFAmerican Centy ETF Trvs. Q4 2023SEC
Q4 2023Feb 8, 202497$514.2MiShares Core S&P 500 ETFiShares Core S&P Mid-Cap ETFiShares Core MSCI Eafe ETFvs. Q3 2023SEC
Q3 2023Oct 13, 202399$482.8MiShares Core S&P 500 ETFiShares Core S&P Mid-Cap ETFiShares Core MSCI Eafe ETFvs. Q2 2023SEC
Q2 2023Jul 20, 2023100$514.3MiShares Core S&P 500 ETFiShares Core S&P Mid-Cap ETFiShares Core MSCI Eafe ETFvs. Q1 2023SEC
Q1 2023Apr 11, 202399$494.9MiShares Core S&P 500 ETFiShares Core S&P Mid-Cap ETFiShares Core MSCI Eafe ETFvs. Q4 2022SEC
Q4 2022Jan 25, 202395$456.3MiShares Core S&P 500 ETFiShares Core S&P Mid-Cap ETFiShares Core MSCI Emerging Markets ETFvs. Q3 2022SEC
Q3 2022Oct 14, 202287$421.7MiShares Core S&P 500 ETFiShares Core S&P Mid-Cap ETFiShares Core MSCI Eafe ETFvs. Q2 2022SEC
Q2 2022Jul 19, 2022107$445.3MiShares Core S&P 500 ETFiShares Core S&P Mid-Cap ETFiShares Core MSCI Eafe ETFvs. Q1 2022SEC
Q1 2022Apr 25, 20221,091$492.6MiShares Core S&P 500 ETFiShares Core S&P Mid-Cap ETFiShares Core MSCI Eafe ETFvs. Q4 2021SEC
Q4 2021Jan 6, 20221,132$580.8MiShares Core S&P 500 ETFiShares Core S&P Mid-Cap ETFiShares Core MSCI Eafe ETFvs. Q3 2021SEC
Q3 2021Oct 12, 20211,179$546.3MiShares Core S&P 500 ETFiShares Core S&P Mid-Cap ETFiShares Core MSCI Eafe ETFvs. Q2 2021SEC
Q2 2021Jul 16, 20211,162$559.5MiShares Core S&P 500 ETFiShares Core S&P Mid-Cap ETFiShares Core MSCI Eafe ETFvs. Q1 2021SEC
Q1 2021Apr 27, 20211,168$508.1MiShares Core S&P 500 ETFiShares Core S&P Mid-Cap ETFiShares Core MSCI Eafe ETF–SEC