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Livermore
Livermore
ZHEN

ARK & TLK Investments, LLC

SEC CIK
0002013188
Latest filing
Jul 20, 2026

The latest 13F from ARK & TLK Investments, LLC covers Q2 2026 (filed Jul 20, 2026): 126 long positions worth $404.9M. The top 10 holdings make up 66.2% of the portfolio, and the largest is Dimensional U.S. Core Equity 2 ETF at 27.5%. Livermore has 11 filings on Form 13F from this institution, going back to Q4 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
9
Est. +$2.41M
Added
26
Est. +$4.63M
Reduced
30
Est. −$10.5M
Sold out
1
Est. −$232.3K

Top 5 holdings

Share of this quarter's portfolio value

  1. Dimensional U.S. Core Equity 2 ETF25434V708
    27.5%$111.4M
  2. Dimensional ETF Trust25434V799
    9.9%$40.0M
  3. Dimensional ETF Trust25434V401
    9.2%$37.2M
  4. iShares Tr46434V860
    3.9%$15.7M
  5. Dimensional World Ex U.S. Core Equity 2 ETF25434V880
    3.5%$14.2M

Share of portfolio

Top 5 holdings and the other 121 positions, by share of portfolio value

  1. Dimensional U.S. Core Equity 2 ETF27.5%
  2. Dimensional ETF Trust9.9%
  3. Dimensional ETF Trust9.2%
  4. iShares Tr3.9%
  5. Dimensional World Ex U.S. Core Equity 2 ETF3.5%
  6. Other 121 positions46.0%

Biggest buys

New and added positions, by estimated amount bought

  1. Dimensional U.S. Core Equity 2 ETF25434V708
    +$1.88MAdded
  2. OKEONEOK Inc
    +$555.9KNewHistory
  3. iShares Core MSCI Emerging Markets ETF46434G103
    +$550.2KAdded
  4. American Centy ETF Tr025072885
    +$421.1KAdded
  5. Dimensional ETF Trust25434V799
    +$370.3KAdded

Largest weight increases

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

  1. Dimensional U.S. Core Equity 2 ETF25434V708
    +1.49 pp26.0% → 27.5%
  2. iShares Core MSCI Emerging Markets ETF46434G103
    +0.25 pp1.4% → 1.6%
  3. American Centy ETF Tr025072885
    +0.22 pp2.4% → 2.6%
  4. OKEONEOK Inc
    +0.14 pp0.0% → 0.1%History
  5. Dimensional ETF Trust25434V740
    +0.09 pp0.5% → 0.6%

Biggest sells

Reduced and sold-out positions, by estimated amount sold

  1. iShares Tr46434V860
    −$6.41MReduced
  2. SMCSummit Midstream Corp
    −$1.52MReducedHistory
  3. JPMJPMorgan Chase & Co
    −$952.2KReducedHistory
  4. Dimensional ETF Trust25434V732
    −$441.7KReduced
  5. HONHoneywell International Inc
    −$232.3KSold outHistory

Largest weight decreases

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

  1. iShares Tr46434V860
    −2.12 pp6.0% → 3.9%
  2. SMCSummit Midstream Corp
    −0.50 pp0.9% → 0.4%History
  3. JPMJPMorgan Chase & Co
    −0.23 pp0.5% → 0.3%History
  4. MSFTMicrosoft Corp
    −0.11 pp0.7% → 0.6%History
  5. Dimensional World Ex U.S. Core Equity 2 ETF25434V880
    −0.09 pp3.6% → 3.5%

Metrics

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

Portfolio value
$404.9M
+$36.3M (+9.8%) vs. prior quarter
Positions
126
+8 vs. prior quarter
Top 10 concentration
66.2%
Top 10 as share of value
Turnover
1.8%
Q2 2026, one quarter
Average holding period
10.0 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 (Q4 2023), so positions held before then are understated.

13F filings by quarter

11 quarters, going back to Q4 2023. Bars show each quarter's 13F portfolio value; quarters without a filing are left blank.

Peak $404.9M (Q2 2026)

Q4 2023: $250.0MQ1 2024: $256.3MQ2 2024: $267.4MQ3 2024: $281.3MQ4 2024: $287.8MQ1 2025: $283.8MQ2 2025: $311.6MQ3 2025: $315.2MQ4 2025: $363.5MQ1 2026: $368.6MQ2 2026: $404.9M
Q4 2023Q2 2026
13F filings of ARK & TLK Investments, LLC by quarter
QuarterFiledPositionsValueTop 3 holdingsChangesFiling
Q2 2026Jul 20, 2026126$404.9MDimensional U.S. Core Equity 2 ETFDimensional ETF TrustDimensional ETF Trustvs. Q1 2026SEC
Q1 2026May 12, 2026118$368.6MDimensional U.S. Core Equity 2 ETFDimensional ETF TrustDimensional ETF Trustvs. Q4 2025SEC
Q4 2025Feb 10, 2026113$363.5MDimensional U.S. Core Equity 2 ETFDimensional ETF TrustDimensional ETF Trustvs. Q3 2025SEC
Q3 2025Oct 31, 2025114$315.2MDimensional U.S. Core Equity 2 ETFDimensional ETF TrustDimensional ETF Trustvs. Q2 2025SEC
Q2 2025Aug 13, 2025116$311.6MDimensional U.S. Core Equity 2 ETFDimensional ETF TrustDimensional ETF Trustvs. Q1 2025SEC
Q1 2025May 1, 2025112$283.8MDimensional U.S. Core Equity 2 ETFDimensional ETF TrustDimensional ETF Trustvs. Q4 2024SEC
Q4 2024Feb 12, 2025111$287.8MDimensional U.S. Core Equity 2 ETFDimensional ETF TrustDimensional ETF Trustvs. Q3 2024SEC
Q3 2024Nov 8, 2024108$281.3MDimensional U.S. Core Equity 2 ETFDimensional ETF TrustDimensional ETF Trustvs. Q2 2024SEC
Q2 2024Jul 29, 2024106$267.4MDimensional U.S. Core Equity 2 ETFDimensional ETF TrustDimensional ETF Trustvs. Q1 2024SEC
Q1 2024May 10, 2024105$256.3MDimensional U.S. Small Cap ETFDimensional ETF TrustDimensional ETF Trustvs. Q4 2023SEC
Q4 2023Mar 1, 2024110$250.0MDimensional U.S. Small Cap ETFDimensional ETF TrustDimensional ETF Trust–SEC