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Livermore
Livermore
ZHEN

CenterStar Asset Management, LLC

SEC CIK
0001722053
Latest filing
Aug 5, 2026

The latest 13F from CenterStar Asset Management, LLC covers Q2 2026 (filed Aug 5, 2026): 50 long positions worth $128.9M. The top 10 holdings make up 79.7% of the portfolio, and the largest is SPDR S&P 500 ETF Trust (SPY) at 49.7%. 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
26
Est. +$28.5M
Added
9
Est. +$53.8M
Reduced
13
Est. −$15.1M
Sold out
63
Est. −$52.5M

Top 5 holdings

Share of this quarter's portfolio value

  1. SPYSPDR S&P 500 ETF Trust
    49.7%$64.1MHistory
  2. Invesco Exchange Traded FD T46137V357
    6.0%$7.77M
  3. TSLATesla, Inc.
    4.0%$5.19MHistory
  4. NVDANVIDIA Corp
    3.9%$5.07MHistory
  5. METAMeta Platforms, Inc.
    3.9%$5.01MHistory

Share of portfolio

Top 5 holdings and the other 45 positions, by share of portfolio value

  1. SPY49.7%
  2. Invesco Exchange Traded FD T6.0%
  3. TSLA4.0%
  4. NVDA3.9%
  5. META3.9%
  6. Other 45 positions32.5%

Biggest buys

New and added positions, by estimated amount bought

  1. SPYSPDR S&P 500 ETF Trust
    +$43.5MAddedHistory
  2. Invesco Exchange Traded FD T46137V357
    +$7.77MNew
  3. GOOGAlphabet Inc.
    +$3.49MNewHistory
  4. SMCISuper Micro Computer, Inc.
    +$3.15MNewHistory
  5. TSMTaiwan Semiconductor Manufacturing Co Ltd
    +$2.66MNewHistory

Largest weight increases

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

  1. SPYSPDR S&P 500 ETF Trust
    +32.40 pp17.3% → 49.7%History
  2. Invesco Exchange Traded FD T46137V357
    +6.03 pp0.0% → 6.0%
  3. GOOGAlphabet Inc.
    +2.71 pp0.0% → 2.7%History
  4. SMCISuper Micro Computer, Inc.
    +2.44 pp0.0% → 2.4%History
  5. TSMTaiwan Semiconductor Manufacturing Co Ltd
    +2.06 pp0.0% → 2.1%History

Biggest sells

Reduced and sold-out positions, by estimated amount sold

  1. Invesco QQQ Trust Series I46090E103
    −$17.9MSold out
  2. AVGOBroadcom Inc.
    −$6.86MReducedHistory
  3. SNOWSnowflake Inc.
    −$1.74MReducedHistory
  4. MMM3M Co
    −$1.67MSold outHistory
  5. LRCXLam Research Corp
    −$1.63MSold outHistory

Largest weight decreases

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

  1. Invesco QQQ Trust Series I46090E103
    −17.32 pp17.3% → 0.0%
  2. AVGOBroadcom Inc.
    −5.43 pp6.0% → 0.6%History
  3. MMM3M Co
    −1.61 pp1.6% → 0.0%History
  4. LRCXLam Research Corp
    −1.57 pp1.6% → 0.0%History
  5. IBMInternational Business Machines Corp
    −1.51 pp1.5% → 0.0%History

Metrics

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

Portfolio value
$128.9M
+$25.3M (+24.4%) vs. prior quarter
Positions
50
−37 vs. prior quarter
Top 10 concentration
79.7%
Top 10 as share of value
Turnover
58.1%
Q2 2026, one quarter
Average holding period
8.4 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 $143.7M (Q1 2022)

Q1 2021: $70.1MQ2 2021: $92.2MQ3 2021: $128.1MQ4 2021: $131.3MQ1 2022: $143.7MQ2 2022: $91.8MQ3 2022: $57.1MQ4 2022: $53.7MQ1 2023: $33.2MQ2 2023: $110.3MQ3 2023: $37.0MQ4 2023: $97.2MQ1 2024: $48.4MQ2 2024: $66.5MQ3 2024: $66.6MQ4 2024: $45.6MQ1 2025: $69.7MQ2 2025: $81.3MQ3 2025: $52.6MQ4 2025: $63.5MQ1 2026: $103.6MQ2 2026: $128.9M
Q1 2021Q2 2026
13F filings of CenterStar Asset Management, LLC by quarter
QuarterFiledPositionsValueTop 3 holdingsChangesFiling
Q2 2026Aug 5, 202650$128.9MSPYInvesco Exchange Traded FD TTSLAvs. Q1 2026SEC
Q1 2026May 1, 202687$103.6MInvesco QQQ Trust Series ISPYAVGOvs. Q4 2025SEC
Q4 2025Jan 27, 202648$63.5MSPYMUInvesco Exchange Traded FD Tvs. Q3 2025SEC
Q3 2025Oct 20, 202547$52.6MSPYORCLACNvs. Q2 2025SEC
Q2 2025Jul 21, 202525$81.3MSPYBKNGInvesco QQQ Trust Series Ivs. Q1 2025SEC
Q1 2025Apr 9, 202575$69.7MSPYInvesco QQQ Trust Series IState Street Technology Select Sector SPDR ETFvs. Q4 2024SEC
Q4 2024Jan 27, 202557$45.6MSPYState Street Technology Select Sector SPDR ETFUBERvs. Q3 2024SEC
Q3 2024Oct 11, 202446$66.6MSPYARMInvesco QQQ Trust Series Ivs. Q2 2024SEC
Q2 2024Jul 16, 202459$66.5MSPYARMInvesco QQQ Trust Series Ivs. Q1 2024SEC
Q1 2024Apr 18, 202434$48.4MSPYDIANVDAvs. Q4 2023SEC
Q4 2023Feb 7, 202438$97.2MSPYInvesco QQQ Trust Series IState Street Consumer Staples Select Sector SPDR ETFvs. Q3 2023SEC
Q3 2023Oct 19, 202349$37.0MInvesco QQQ Trust Series IiShares TrState Street SPDR S&P Biotech ETFvs. Q2 2023SEC
Q2 2023Jul 26, 202385$110.3MSPYInvesco QQQ Trust Series IAAPLvs. Q1 2023SEC
Q1 2023May 15, 202330$33.2MSPYState Street Industrial Select Sector SPDR ETFMPLXvs. Q4 2022SEC
Q4 2022Jan 12, 202372$53.7MSPYWMTInvesco QQQ Trust Series Ivs. Q3 2022SEC
Q3 2022Oct 31, 2022107$57.1MNFLXLINInvesco QQQ Trust Series Ivs. Q2 2022SEC
Q2 2022Jul 11, 2022119$91.8MSPYASMLSONYvs. Q1 2022SEC
Q1 2022Apr 25, 2022157$143.7MSPYMSState Street Financial Select Sector SPDR ETFvs. Q4 2021SEC
Q4 2021Jan 26, 2022221$131.3MSPYGOOGPYPLvs. Q3 2021SEC
Q3 2021Nov 2, 2021204$128.1MMETAVanEck Semiconductor ETFGOOGvs. Q2 2021SEC
Q2 2021Jul 21, 2021137$92.2MSPYMETAROKUvs. Q1 2021SEC
Q1 2021Apr 23, 2021200$70.1MSPYSHOPROKU–SEC