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Livermore
Livermore
ZHEN

Birchbrook, Inc.

SEC CIK
0002071468
Latest filing
Jul 8, 2026

The latest 13F from Birchbrook, Inc. covers Q2 2026 (filed Jul 8, 2026): 305 long positions worth $213.1M. The top 10 holdings make up 59.9% of the portfolio, and the largest is Vanguard Scottsdale FDS at 15.8%. 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
35
Est. +$4.01M
Added
51
Est. +$3.43M
Reduced
68
Est. −$11.3M
Sold out
21
Est. −$1.19M

Top 5 holdings

Share of this quarter's portfolio value

  1. Vanguard Scottsdale FDS92206C706
    15.8%$33.7M
  2. iShares Tr464288638
    12.0%$25.6M
  3. Vanguard Ftse Developed Markets ETF921943858
    6.4%$13.5M
  4. iShares Core MSCI Emerging Markets ETF46434G103
    5.0%$10.7M
  5. Vanguard S&P 500 ETF922908363
    4.0%$8.45M

Biggest buys

New and added positions, by estimated amount bought

  1. CRWDCrowdStrike Holdings, Inc.
    +$1.39MNewHistory
  2. PANWPalo Alto Networks Inc
    +$1.17MAddedHistory
  3. HOODRobinhood Markets, Inc.
    +$1.17MNewHistory
  4. iShares Tr464288638
    +$801.6KAdded
  5. NOWServiceNow, Inc.
    +$687.7KNewHistory

Largest weight increases

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

  1. CRWDCrowdStrike Holdings, Inc.
    +0.65 pp0.0% → 0.7%History
  2. PANWPalo Alto Networks Inc
    +0.56 pp<0.1% → 0.6%History
  3. HOODRobinhood Markets, Inc.
    +0.55 pp0.0% → 0.5%History
  4. Vanguard S&P 500 ETF922908363
    +0.53 pp3.4% → 4.0%
  5. NOWServiceNow, Inc.
    +0.32 pp0.0% → 0.3%History

Biggest sells

Reduced and sold-out positions, by estimated amount sold

  1. FTNTFortinet, Inc.
    −$1.18MReducedHistory
  2. CCitigroup Inc
    −$1.12MReducedHistory
  3. HONHoneywell International Inc
    −$1.05MSold outHistory
  4. Vanguard Scottsdale FDS92206C706
    −$913.4KReduced
  5. BMYBristol Myers Squibb Co
    −$870.6KReducedHistory

Largest weight decreases

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

  1. Vanguard Scottsdale FDS92206C706
    −1.32 pp17.1% → 15.8%
  2. HONHoneywell International Inc
    −0.52 pp0.5% → 0.0%History
  3. BMYBristol Myers Squibb Co
    −0.45 pp0.5% → <0.1%History
  4. CCitigroup Inc
    −0.36 pp0.9% → 0.5%History
  5. FDXFedEx Corp
    −0.33 pp0.6% → 0.3%History

Metrics

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

Portfolio value
$213.1M
+$9.11M (+4.5%) vs. prior quarter
Positions
305
+14 vs. prior quarter
Top 10 concentration
59.9%
Top 10 as share of value
Turnover
3.6%
Q2 2026, one quarter
Average holding period
10.3 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 $213.1M (Q2 2026)

Q4 2023: $151.7MQ1 2024: $168.2MQ2 2024: $166.7MQ3 2024: $180.4MQ4 2024: $175.9MQ1 2025: $178.0MQ2 2025: $186.6MQ3 2025: $193.3MQ4 2025: $200.6MQ1 2026: $203.9MQ2 2026: $213.1M
Q4 2023Q2 2026
13F filings of Birchbrook, Inc. by quarter
QuarterFiledPositionsValueTop 3 holdingsChangesFiling
Q2 2026Jul 8, 2026305$213.1MVanguard Scottsdale FDSiShares TrVanguard Ftse Developed Markets ETFvs. Q1 2026SEC
Q1 2026Apr 8, 2026291$203.9MVanguard Scottsdale FDSiShares TrVanguard Ftse Developed Markets ETFvs. Q4 2025SEC
Q4 2025Feb 4, 2026298$200.6MVanguard Scottsdale FDSiShares TrVanguard Ftse Developed Markets ETFvs. Q3 2025SEC
Q3 2025Nov 3, 2025270$193.3MVanguard Scottsdale FDSiShares TrVanguard Ftse Developed Markets ETFvs. Q2 2025SEC
Q2 2025Aug 11, 2025276$186.6MVanguard Scottsdale FDSiShares TriShares MSCI USA Min Vol Factor ETFvs. Q1 2025SEC
Q1 2025Jun 10, 2025268$178.0MVanguard Scottsdale FDSiShares TriShares MSCI USA Min Vol Factor ETFvs. Q4 2024SEC
Q4 2024Jun 10, 2025291$175.9MVanguard Scottsdale FDSiShares TriShares MSCI USA Min Vol Factor ETFvs. Q3 2024SEC
Q3 2024Jun 10, 2025265$180.4MVanguard Scottsdale FDSiShares TriShares MSCI USA Min Vol Factor ETFvs. Q2 2024SEC
Q2 2024Jun 10, 2025265$166.7MVanguard Scottsdale FDSiShares TriShares MSCI USA Min Vol Factor ETFvs. Q1 2024SEC
Q1 2024Jun 10, 2025279$168.2MVanguard Scottsdale FDSiShares TriShares MSCI USA Min Vol Factor ETFvs. Q4 2023SEC
Q4 2023Jun 10, 2025309$151.7MVanguard Scottsdale FDSiShares TrVanguard Ftse Developed Markets ETF–SEC