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Livermore
Livermore
ZHEN

Northstar Group, Inc.

SEC CIK
0001631408
Latest filing
Aug 3, 2026

The latest 13F from Northstar Group, Inc. covers Q2 2026 (filed Aug 3, 2026): 168 long positions worth $777.0M. The top 10 holdings make up 57.1% of the portfolio, and the largest is Berkshire Hathaway Inc (BRK.B) at 15.2%. 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
9
Est. +$2.50M
Added
41
Est. +$13.0M
Reduced
56
Est. −$4.10M
Sold out
7
Est. −$1.69M

Top 5 holdings

Share of this quarter's portfolio value

  1. BRK.BBerkshire Hathaway Inc
    15.2%$118.1MHistory
  2. Vanguard Morningstar Total Stock Market ETF922908769
    11.6%$89.9M
  3. State Street SPDR Bloomberg 1-3 Month T-Bill ETF78468R663
    6.6%$51.1M
  4. AAPLApple Inc.
    5.6%$43.3MHistory
  5. GOOGAlphabet Inc.
    4.8%$37.3MHistory

Biggest buys

New and added positions, by estimated amount bought

  1. State Street SPDR Bloomberg 1-3 Month T-Bill ETF78468R663
    +$2.98MAdded
  2. MKLMarkel Group Inc.
    +$1.21MAddedHistory
  3. Vanguard Morningstar Value ETF922908744
    +$1.04MAdded
  4. Vanguard Morningstar Total Stock Market ETF922908769
    +$1.04MAdded
  5. iShares Ibonds Dec 2028 Term Corporate ETF46435U515
    +$969.1KAdded

Largest weight increases

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

  1. Vanguard Morningstar Total Stock Market ETF922908769
    +0.68 pp10.9% → 11.6%
  2. Vanguard Morningstar Value ETF922908744
    +0.15 pp1.6% → 1.7%
  3. AMZNAmazon Com Inc
    +0.11 pp2.6% → 2.7%History
  4. Vanguard Star FDS921909768
    +0.10 pp1.5% → 1.6%
  5. MKLMarkel Group Inc.
    +0.10 pp0.8% → 0.9%History

Biggest sells

Reduced and sold-out positions, by estimated amount sold

  1. HONHoneywell International Inc
    −$396.5KSold outHistory
  2. CATCaterpillar Inc
    −$366.4KReducedHistory
  3. SBUXStarbucks Corp
    −$259.7KReducedHistory
  4. GOOGAlphabet Inc.
    −$254.4KReducedHistory
  5. GLWCorning Inc
    −$237.3KReducedHistory

Largest weight decreases

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

  1. BRK.BBerkshire Hathaway Inc
    −0.80 pp16.0% → 15.2%History
  2. COSTCostco Wholesale Corp
    −0.45 pp3.1% → 2.6%History
  3. METAMeta Platforms, Inc.
    −0.21 pp2.0% → 1.8%History
  4. WMTWalmart Inc.
    −0.17 pp1.0% → 0.8%History
  5. PEPPepsiCo Inc
    −0.08 pp0.4% → 0.3%History

Metrics

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

Portfolio value
$777.0M
+$69.6M (+9.8%) vs. prior quarter
Positions
168
+2 vs. prior quarter
Top 10 concentration
57.1%
Top 10 as share of value
Turnover
0.8%
Q2 2026, one quarter
Average holding period
19.7 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 $777.0M (Q2 2026)

Q1 2021: $354.5MQ2 2021: $382.0MQ3 2021: $384.7MQ4 2021: $419.2MQ1 2022: $416.2MQ2 2022: $345.8MQ3 2022: $333.7MQ4 2022: $352.7MQ1 2023: $389.9MQ2 2023: $426.5MQ3 2023: $421.8MQ4 2023: $460.4MQ1 2024: $509.1MQ2 2024: $529.0MQ3 2024: $574.1MQ4 2024: $597.1MQ1 2025: $616.8MQ2 2025: $647.5MQ3 2025: $686.6MQ4 2025: $734.2MQ1 2026: $707.4MQ2 2026: $777.0M
Q1 2021Q2 2026
13F filings of Northstar Group, Inc. by quarter
QuarterFiledPositionsValueTop 3 holdingsChangesFiling
Q2 2026Aug 3, 2026168$777.0MBRK.BVanguard Morningstar Total Stock Market ETFState Street SPDR Bloomberg 1-3 Month T-Bill ETFvs. Q1 2026SEC
Q1 2026Apr 28, 2026166$707.4MBRK.BVanguard Morningstar Total Stock Market ETFState Street SPDR Bloomberg 1-3 Month T-Bill ETFvs. Q4 2025SEC
Q4 2025Feb 13, 2026163$734.2MBRK.BVanguard Morningstar Total Stock Market ETFState Street SPDR Bloomberg 1-3 Month T-Bill ETFvs. Q3 2025SEC
Q3 2025Oct 22, 2025161$686.6MBRK.BVanguard Morningstar Total Stock Market ETFState Street SPDR Bloomberg 1-3 Month T-Bill ETFvs. Q2 2025SEC
Q2 2025Jul 18, 2025161$647.5MBRK.BVanguard Morningstar Total Stock Market ETFState Street SPDR Bloomberg 1-3 Month T-Bill ETFvs. Q1 2025SEC
Q1 2025Apr 17, 2025150$616.8MBRK.BVanguard Morningstar Total Stock Market ETFState Street SPDR Bloomberg 1-3 Month T-Bill ETFvs. Q4 2024SEC
Q4 2024Jan 28, 2025154$597.1MBRK.BVanguard Morningstar Total Stock Market ETFState Street SPDR Bloomberg 1-3 Month T-Bill ETFvs. Q3 2024SEC
Q3 2024Oct 9, 2024157$574.1MBRK.BVanguard Morningstar Total Stock Market ETFState Street SPDR Bloomberg 1-3 Month T-Bill ETFvs. Q2 2024SEC
Q2 2024Jul 18, 2024147$529.0MBRK.BVanguard Morningstar Total Stock Market ETFState Street SPDR Bloomberg 1-3 Month T-Bill ETFvs. Q1 2024SEC
Q1 2024Apr 18, 2024150$509.1MBRK.BVanguard Morningstar Total Stock Market ETFState Street SPDR Bloomberg 1-3 Month T-Bill ETFvs. Q4 2023SEC
Q4 2023Jan 10, 2024144$460.4MBRK.BVanguard Morningstar Total Stock Market ETFAAPLvs. Q3 2023SEC
Q3 2023Oct 19, 2023142$421.8MBRK.BVanguard Morningstar Total Stock Market ETFAAPLvs. Q2 2023SEC
Q2 2023Aug 3, 2023149$426.5MBRK.BVanguard Morningstar Total Stock Market ETFAAPLvs. Q1 2023SEC
Q1 2023Apr 27, 2023144$389.9MBRK.BVanguard Morningstar Total Stock Market ETFAAPLvs. Q4 2022SEC
Q4 2022Jan 26, 2023135$352.7MBRK.BVanguard Morningstar Total Stock Market ETFAAPLvs. Q3 2022SEC
Q3 2022Oct 26, 2022135$333.7MBRK.BVanguard Morningstar Total Stock Market ETFAAPLvs. Q2 2022SEC
Q2 2022Jul 27, 2022139$345.8MBRK.BVanguard Morningstar Total Stock Market ETFAAPLvs. Q1 2022SEC
Q1 2022May 5, 2022152$416.2MBRK.BAAPLVanguard Morningstar Total Stock Market ETFvs. Q4 2021SEC
Q4 2021Jan 31, 2022153$419.2MBRK.BAAPLVanguard Morningstar Total Stock Market ETFvs. Q3 2021SEC
Q3 2021Nov 2, 2021148$384.7MBRK.BAAPLVanguard Morningstar Total Stock Market ETFvs. Q2 2021SEC
Q2 2021Jul 28, 2021150$382.0MBRK.BAAPLVanguard Morningstar Total Stock Market ETFvs. Q1 2021SEC
Q1 2021May 10, 2021148$354.5MBRK.BAAPLVanguard Morningstar Total Stock Market ETF–SEC