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Livermore
Livermore
ZHEN

Amica Mutual Insurance Co

SEC CIK
0000857508
Latest filing
Aug 5, 2026

The latest 13F from Amica Mutual Insurance Co covers Q2 2026 (filed Aug 5, 2026): 142 long positions worth $1.20B. The top 10 holdings make up 50.8% of the portfolio, and the largest is iShares Core MSCI Total International Stock ETF at 24.5%. Livermore has 23 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
5
Est. +$6.05M
Added
18
Est. +$10.7M
Reduced
82
Est. −$74.8M
Sold out
7
Est. −$26.2M

Top 5 holdings

Share of this quarter's portfolio value

  1. iShares Core MSCI Total International Stock ETF46432F834
    24.5%$294.5M
  2. NVDANVIDIA Corp
    5.6%$67.5MHistory
  3. AAPLApple Inc.
    4.3%$51.4MHistory
  4. MSFTMicrosoft Corp
    3.5%$41.9MHistory
  5. GOOGLAlphabet Inc.
    3.1%$37.5MHistory

Share of portfolio

Top 5 holdings and the other 137 positions, by share of portfolio value

  1. iShares Core MSCI Total International Stock ETF24.5%
  2. NVDA5.6%
  3. AAPL4.3%
  4. MSFT3.5%
  5. GOOGL3.1%
  6. Other 137 positions59.0%

Biggest buys

New and added positions, by estimated amount bought

  1. DXCMDexcom Inc
    +$2.33MNewHistory
  2. State Street SPDR S&P Regional Banking ETF78464A698
    +$2.21MNew
  3. BXBlackstone Inc.
    +$1.56MAddedHistory
  4. NFLXNetflix Inc
    +$1.54MAddedHistory
  5. CCCCCC Intelligent Solutions Holdings Inc.
    +$1.19MAddedHistory

Largest weight increases

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

  1. ENTGEntegris Inc
    +0.42 pp0.7% → 1.2%History
  2. DXCMDexcom Inc
    +0.19 pp0.0% → 0.2%History
  3. State Street SPDR S&P Regional Banking ETF78464A698
    +0.18 pp0.0% → 0.2%
  4. BXBlackstone Inc.
    +0.13 pp0.3% → 0.4%History
  5. State Street SPDR S&P Biotech ETF78464A870
    +0.13 pp0.2% → 0.3%

Biggest sells

Reduced and sold-out positions, by estimated amount sold

  1. iShares Core MSCI Total International Stock ETF46432F834
    −$24.8MReduced
  2. ACNAccenture plc
    −$7.20MSold outHistory
  3. CRMSalesforce, Inc.
    −$6.30MSold outHistory
  4. PBProsperity Bancshares Inc
    −$6.20MSold outHistory
  5. PMPhilip Morris International Inc.
    −$4.71MReducedHistory

Largest weight decreases

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

  1. ACNAccenture plc
    −0.62 pp0.6% → 0.0%History
  2. CRMSalesforce, Inc.
    −0.54 pp0.5% → 0.0%History
  3. PBProsperity Bancshares Inc
    −0.53 pp0.5% → 0.0%History
  4. LAZLazard, Inc.
    −0.34 pp0.7% → 0.4%History
  5. iShares Core MSCI Total International Stock ETF46432F834
    −0.34 pp24.9% → 24.5%

Metrics

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

Portfolio value
$1.20B
+$36.5M (+3.1%) vs. prior quarter
Positions
142
−2 vs. prior quarter
Top 10 concentration
50.8%
Top 10 as share of value
Turnover
1.4%
Q2 2026, one quarter
Average holding period
18.3 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 (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 $1.20B (Q2 2026)

Q1 2021: $877.2MQ2 2021: $948.3MQ3 2021: $958.0MQ4 2021: $1.18BQ1 2022: $851.5MQ2 2022: $788.3MQ3 2022: $705.6MQ4 2022: $791.7MQ1 2023: $896.6MQ2 2023: $884.3MQ3 2023: $850.0MQ4 2023: $925.7MQ1 2024: $981.2MQ2 2024: $1.01BQ3 2024: $1.03BQ4 2024: $975.9MQ1 2025: $908.2MQ2 2025: $1.04BQ3 2025: $1.09BQ4 2025: $1.15BQ1 2026: $1.16BQ2 2026: $1.20B
Q1 2021Q2 2026
13F filings of Amica Mutual Insurance Co by quarter
QuarterFiledPositionsValueTop 3 holdingsChangesFiling
Q2 2026Aug 5, 2026142$1.20BiShares Core MSCI Total International Stock ETFNVDAAAPLvs. Q1 2026SEC
Q1 2026May 6, 2026144$1.16BiShares Core MSCI Total International Stock ETFNVDAAAPLvs. Q4 2025SEC
Q4 2025Feb 10, 2026142$1.15BiShares Core MSCI Total International Stock ETFNVDAMSFTvs. Q3 2025SEC
Q3 2025Nov 7, 2025142$1.09BiShares Core MSCI Total International Stock ETFNVDAMSFTvs. Q2 2025SEC
Q2 2025Aug 7, 2025139$1.04BiShares Core MSCI Total International Stock ETFMSFTNVDAvs. Q1 2025SEC
Q1 2025May 13, 2025135$908.2MiShares Core MSCI Total International Stock ETFAAPLMSFTvs. Q4 2024SEC
Q4 2024Feb 12, 2025135$975.9MiShares Core MSCI Total International Stock ETFMSFTAAPLvs. Q3 2024SEC
Q3 2024Nov 12, 2024134$1.03BiShares Core MSCI Total International Stock ETFMSFTAAPLvs. Q2 2024SEC
Q2 2024Jul 25, 2024132$1.01BiShares Core MSCI Total International Stock ETFMSFTAAPLvs. Q1 2024SEC
Q1 2024May 13, 2024Amended129$981.2MiShares Core MSCI Total International Stock ETFMSFTAAPLvs. Q4 2023SEC
Q4 2023Feb 5, 2024124$925.7MiShares Core MSCI Total International Stock ETFMSFTAAPLvs. Q3 2023SEC
Q3 2023Nov 3, 2023102$850.0MiShares Core MSCI Total International Stock ETFMSFTAAPLvs. Q2 2023SEC
Q2 2023Aug 7, 202399$884.3MiShares Core MSCI Total International Stock ETFMSFTAAPLvs. Q1 2023SEC
Q1 2023May 5, 202397$896.6MiShares Core MSCI Total International Stock ETFMSFTAAPLvs. Q4 2022SEC
Q4 2022Feb 8, 202392$791.7MiShares Core MSCI Total International Stock ETFMSFTAAPLvs. Q3 2022SEC
Q3 2022Oct 24, 2022102$705.6MiShares Core MSCI Total International Stock ETFMSFTAAPLvs. Q2 2022SEC
Q2 2022Jul 29, 2022105$788.3MiShares Core MSCI Total International Stock ETFMSFTAAPLvs. Q1 2022SEC
Q1 2022May 12, 2022105$851.5MMSFTAAPLGOOGLvs. Q4 2021SEC
Q4 2021Feb 8, 2022103$1.18BiShares Core MSCI Total International Stock ETFMSFTAAPLvs. Q3 2021SEC
Q3 2021Nov 3, 2021103$958.0MMSFTAAPLGOOGLvs. Q2 2021SEC
Q2 2021Aug 4, 2021106$948.3MMSFTAAPLiShares Core MSCI Total International Stock ETFvs. Q1 2021SEC
Q1 2021May 7, 2021152$877.2MMSFTAAPLGOOGL–SEC