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Livermore
Livermore
ZHEN

Aureus Asset Management, LLC

SEC CIK
0001381296
Latest filing
Aug 14, 2026

The latest 13F from Aureus Asset Management, LLC covers Q2 2026 (filed Aug 14, 2026): 239 long positions worth $1.65B. The top 10 holdings make up 39.6% of the portfolio, and the largest is Alphabet Inc. (GOOGL) at 5.4%. 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
31
Est. +$42.8M
Added
64
Est. +$37.0M
Reduced
86
Est. −$122.2M
Sold out
17
Est. −$15.0M

Top 5 holdings

Share of this quarter's portfolio value

  1. GOOGLAlphabet Inc.
    5.4%$89.6MHistory
  2. AMATApplied Materials Inc
    4.6%$75.5MHistory
  3. AAPLApple Inc.
    4.2%$69.9MHistory
  4. AMZNAmazon Com Inc
    4.1%$67.2MHistory
  5. MSFTMicrosoft Corp
    4.1%$66.9MHistory

Biggest buys

New and added positions, by estimated amount bought

  1. IEXIdex Corp
    +$20.5MNewHistory
  2. TXNTexas Instruments Inc
    +$9.39MAddedHistory
  3. APOApollo Global Management, Inc.
    +$4.65MAddedHistory
  4. DVNDevon Energy Corp
    +$3.92MNewHistory
  5. AAgilent Technologies, Inc.
    +$3.36MAddedHistory

Largest weight increases

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

  1. IEXIdex Corp
    +1.24 pp0.0% → 1.2%History
  2. UNHUnitedHealth Group Inc
    +0.96 pp2.3% → 3.2%History
  3. TXNTexas Instruments Inc
    +0.78 pp0.5% → 1.3%History
  4. AVGOBroadcom Inc.
    +0.37 pp3.2% → 3.6%History
  5. MOG.AMoog Inc.
    +0.29 pp0.8% → 1.1%History

Biggest sells

Reduced and sold-out positions, by estimated amount sold

  1. AMATApplied Materials Inc
    −$47.0MReducedHistory
  2. WABWestinghouse Air Brake Technologies Corp
    −$15.3MReducedHistory
  3. FLSFlowserve Corp
    −$11.5MReducedHistory
  4. BSXBoston Scientific Corp
    −$9.93MReducedHistory
  5. MSFTMicrosoft Corp
    −$5.52MReducedHistory

Largest weight decreases

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

  1. BSXBoston Scientific Corp
    −1.01 pp1.1% → 0.1%History
  2. WABWestinghouse Air Brake Technologies Corp
    −0.98 pp2.7% → 1.7%History
  3. FLSFlowserve Corp
    −0.84 pp1.8% → 0.9%History
  4. MSFTMicrosoft Corp
    −0.72 pp4.8% → 4.1%History
  5. ABTAbbott Laboratories
    −0.54 pp2.3% → 1.7%History

Metrics

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

Portfolio value
$1.65B
+$144.7M (+9.6%) vs. prior quarter
Positions
239
+14 vs. prior quarter
Top 10 concentration
39.6%
Top 10 as share of value
Turnover
5.1%
Q2 2026, one quarter
Average holding period
18.1 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 $1.65B (Q2 2026)

Q1 2021: $1.29BQ2 2021: $1.56BQ3 2021: $1.52BQ4 2021: $1.62BQ1 2022: $1.50BQ2 2022: $1.24BQ3 2022: $1.15BQ4 2022: $1.16BQ1 2023: $1.26BQ2 2023: $1.33BQ3 2023: $1.25BQ4 2023: $1.37BQ1 2024: $1.46BQ2 2024: $1.43BQ3 2024: $1.53BQ4 2024: $1.55BQ1 2025: $1.43BQ2 2025: $1.56BQ3 2025: $1.54BQ4 2025: $1.57BQ1 2026: $1.50BQ2 2026: $1.65B
Q1 2021Q2 2026
13F filings of Aureus Asset Management, LLC by quarter
QuarterFiledPositionsValueTop 3 holdingsChangesFiling
Q2 2026Aug 14, 2026239$1.65BGOOGLAMATAAPLvs. Q1 2026SEC
Q1 2026May 13, 2026225$1.50BGOOGLMSFTAAPLvs. Q4 2025SEC
Q4 2025Feb 17, 2026201$1.57BMSFTGOOGLAAPLvs. Q3 2025SEC
Q3 2025Nov 17, 2025199$1.54BMSFTGOOGLAVGOvs. Q2 2025SEC
Q2 2025Aug 14, 2025205$1.56BMSFTAMZNMETAvs. Q1 2025SEC
Q1 2025May 15, 2025203$1.43BMSFTVAMZNvs. Q4 2024SEC
Q4 2024Feb 14, 2025209$1.55BMSFTAMZNGOOGLvs. Q3 2024SEC
Q3 2024Nov 14, 2024211$1.53BMSFTAMZNAAPLvs. Q2 2024SEC
Q2 2024Aug 13, 2024201$1.43BMSFTAMZNGOOGLvs. Q1 2024SEC
Q1 2024May 13, 2024199$1.46BMSFTAMZNGOOGLvs. Q4 2023SEC
Q4 2023Feb 14, 2024196$1.37BMSFTAMZNBXvs. Q3 2023SEC
Q3 2023Nov 13, 2023193$1.25BMSFTGOOGLAMZNvs. Q2 2023SEC
Q2 2023Aug 11, 2023185$1.33BMSFTAAPLGOOGLvs. Q1 2023SEC
Q1 2023May 12, 2023180$1.26BMSFTAAPLGOOGLvs. Q4 2022SEC
Q4 2022Feb 14, 2023174$1.16BMSFTVSCHWvs. Q3 2022SEC
Q3 2022Nov 14, 2022166$1.15BMSFTAAPLGOOGLvs. Q2 2022SEC
Q2 2022Aug 15, 2022183$1.24BMSFTGOOGLVvs. Q1 2022SEC
Q1 2022May 12, 2022213$1.50BAAPLGOOGLMSFTvs. Q4 2021SEC
Q4 2021Feb 14, 2022207$1.62BGOOGLAAPLAMZNvs. Q3 2021SEC
Q3 2021Nov 12, 2021208$1.52BGOOGLAMZNPYPLvs. Q2 2021SEC
Q2 2021Aug 16, 2021229$1.56BAMZNGOOGLPYPLvs. Q1 2021SEC
Q1 2021May 14, 2021177$1.29BAMZNGOOGLPYPL–SEC