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Livermore
Livermore
ZHEN

Main Management LLC

SEC CIK
0001583092
Latest filing
Aug 14, 2026

The latest 13F from Main Management LLC covers Q2 2026 (filed Aug 14, 2026): 95 long positions worth $1.49B. The top 10 holdings make up 67.3% of the portfolio, and the largest is State Street Technology Select Sector SPDR ETF at 12.8%. 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. +$39.0M
Added
26
Est. +$18.1M
Reduced
34
Est. −$130.8M
Sold out
12
Est. −$702.0K

Top 5 holdings

Share of this quarter's portfolio value

  1. State Street Technology Select Sector SPDR ETF81369Y803
    12.8%$189.8M
  2. SPYSPDR S&P 500 ETF Trust
    12.0%$178.1MHistory
  3. Northern LTS FD Tr IV66538H179
    9.9%$146.9M
  4. Northern LTS FD Tr IV66538H237
    8.2%$122.4M
  5. Northern LTS FD Tr IV66538H278
    4.7%$70.1M

Biggest buys

New and added positions, by estimated amount bought

  1. State Street Utilities Select Sector SPDR ETF81369Y886
    +$38.9MNew
  2. Vanguard Industrials ETF92204A603
    +$6.27MAdded
  3. State Street Technology Select Sector SPDR ETF81369Y803
    +$5.57MAdded
  4. Invesco Nasdaq 100 ETF46138G649
    +$2.45MAdded
  5. State Street Energy Select Sector SPDR ETF81369Y506
    +$1.25MAdded

Largest weight increases

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

  1. State Street Technology Select Sector SPDR ETF81369Y803
    +3.40 pp9.4% → 12.8%
  2. State Street Utilities Select Sector SPDR ETF81369Y886
    +2.61 pp0.0% → 2.6%
  3. Invesco Nasdaq 100 ETF46138G649
    +0.73 pp3.2% → 4.0%
  4. Vanguard Industrials ETF92204A603
    +0.67 pp3.8% → 4.5%
  5. Vanguard Information Technology ETF92204A702
    +0.36 pp1.2% → 1.6%

Biggest sells

Reduced and sold-out positions, by estimated amount sold

  1. State Street Financial Select Sector SPDR ETF81369Y605
    −$40.1MReduced
  2. Northern LTS FD Tr IV66538H278
    −$21.1MReduced
  3. State Street Communication Services Select Sector SPDR ETF81369Y852
    −$20.5MReduced
  4. State Street Health Care Select Sector SPDR ETF81369Y209
    −$16.8MReduced
  5. iShares Tr464288752
    −$16.4MReduced

Largest weight decreases

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

  1. State Street Financial Select Sector SPDR ETF81369Y605
    −2.68 pp6.1% → 3.4%
  2. State Street Communication Services Select Sector SPDR ETF81369Y852
    −1.99 pp5.7% → 3.7%
  3. State Street Health Care Select Sector SPDR ETF81369Y209
    −1.13 pp4.7% → 3.5%
  4. iShares Tr464288752
    −1.03 pp1.1% → 0.1%
  5. Northern LTS FD Tr IV66538H179
    −0.96 pp10.8% → 9.9%

Metrics

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

Portfolio value
$1.49B
+$114.5M (+8.3%) vs. prior quarter
Positions
95
−7 vs. prior quarter
Top 10 concentration
67.3%
Top 10 as share of value
Turnover
4.0%
Q2 2026, one quarter
Average holding period
17.4 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 $1.49B (Q2 2026)

Q1 2021: $899.7MQ2 2021: $930.9MQ3 2021: $929.6MQ4 2021: $998.2MQ1 2022: $969.3MQ2 2022: $837.7MQ3 2022: $809.9MQ4 2022: $867.3MQ1 2023: $942.6MQ2 2023: $984.5MQ3 2023: $986.5MQ4 2023: $1.02BQ1 2024: $1.17BQ2 2024: $1.21BQ3 2024: $1.22BQ4 2024: $1.22BQ1 2025: $1.14BQ2 2025: $1.27BQ3 2025: $1.37BQ4 2025: $1.39BQ1 2026: $1.37BQ2 2026: $1.49B
Q1 2021Q2 2026
13F filings of Main Management LLC by quarter
QuarterFiledPositionsValueTop 3 holdingsChangesFiling
Q2 2026Aug 14, 202695$1.49BState Street Technology Select Sector SPDR ETFSPYNorthern LTS FD Tr IVvs. Q1 2026SEC
Q1 2026May 15, 2026102$1.37BSPYNorthern LTS FD Tr IVState Street Technology Select Sector SPDR ETFvs. Q4 2025SEC
Q4 2025Feb 10, 2026104$1.39BSPYNorthern LTS FD Tr IVState Street Financial Select Sector SPDR ETFvs. Q3 2025SEC
Q3 2025Nov 14, 2025105$1.37BSPYNorthern LTS FD Tr IVState Street Communication Services Select Sector SPDR ETFvs. Q2 2025SEC
Q2 2025Aug 12, 2025104$1.27BSPYNorthern LTS FD Tr IVState Street Communication Services Select Sector SPDR ETFvs. Q1 2025SEC
Q1 2025May 15, 2025114$1.14BSPYNorthern LTS FD Tr IVState Street Communication Services Select Sector SPDR ETFvs. Q4 2024SEC
Q4 2024Feb 14, 2025134$1.22BSPYNorthern LTS FD Tr IVState Street Communication Services Select Sector SPDR ETFvs. Q3 2024SEC
Q3 2024Nov 15, 2024140$1.22BSPYNorthern LTS FD Tr IVState Street Communication Services Select Sector SPDR ETFvs. Q2 2024SEC
Q2 2024Aug 15, 2024143$1.21BSPYNorthern LTS FD Tr IVNorthern LTS FD Tr IVvs. Q1 2024SEC
Q1 2024May 15, 2024154$1.17BSPYNorthern LTS FD Tr IVNorthern LTS FD Tr IVvs. Q4 2023SEC
Q4 2023Feb 15, 2024144$1.02BSPYNorthern LTS FD Tr IVNorthern LTS FD Tr IVvs. Q3 2023SEC
Q3 2023Nov 14, 2023134$986.5MSPYNorthern LTS FD Tr IVInvesco QQQ Trust Series Ivs. Q2 2023SEC
Q2 2023Aug 14, 2023128$984.5MSPYNorthern LTS FD Tr IVInvesco QQQ Trust Series Ivs. Q1 2023SEC
Q1 2023May 12, 2023130$942.6MSPYNorthern LTS FD Tr IVNorthern LTS FD Tr IVvs. Q4 2022SEC
Q4 2022Feb 15, 2023128$867.3MSPYNorthern LTS FD Tr IViShares S&P Mid-Cap 400 Growth ETFvs. Q3 2022SEC
Q3 2022Nov 14, 2022141$809.9MSPYNorthern LTS FD Tr IVInvesco QQQ Trust Series Ivs. Q2 2022SEC
Q2 2022Aug 12, 2022134$837.7MSPYMain Buywrite IInvesco QQQ Trust Series Ivs. Q1 2022SEC
Q1 2022May 11, 2022134$969.3MSPYInvesco QQQ Trust Series IMain Buywrite Ivs. Q4 2021SEC
Q4 2021Feb 15, 2022142$998.2MSPYInvesco QQQ Trust Series IMain Buywrite Ivs. Q3 2021SEC
Q3 2021Nov 16, 2021Amended134$929.6MSPYInvesco QQQ Trust Series IMain Buywrite Ivs. Q2 2021SEC
Q2 2021Aug 13, 2021134$930.9MSPYInvesco QQQ Trust Series IMain Buywrite Ivs. Q1 2021SEC
Q1 2021May 14, 2021136$899.7MSPYInvesco QQQ Trust Series IMain Buywrite I–SEC