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Livermore
Livermore
ZHEN

Atreides Management, LP

SEC CIK
0001777813
Latest filing
Aug 14, 2026

The latest 13F from Atreides Management, LP covers Q2 2026 (filed Aug 14, 2026): 46 long positions worth $11.1B. The top 10 holdings make up 76.3% of the portfolio, and the largest is Space Exploration Technologies Corp (SPCX) at 41.9%. 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
13
Est. +$6.09B
Added
26
Est. +$365.9M
Reduced
7
Est. −$1.29B
Sold out
18
Est. −$1.07B

Top 5 holdings

Share of this quarter's portfolio value

  1. SPCXSpace Exploration Technologies Corp
    41.9%$4.67BHistory
  2. MUMicron Technology Inc
    7.4%$821.1MHistory
  3. CBRSCerebras Systems Inc.
    6.2%$687.3MHistory
  4. ALABAstera Labs, Inc.
    5.3%$587.7MHistory
  5. CIENCiena Corp
    3.0%$337.8MHistory

Biggest buys

New and added positions, by estimated amount bought

  1. SPCXSpace Exploration Technologies Corp
    +$4.67BNewHistory
  2. CBRSCerebras Systems Inc.
    +$687.3MNewHistory
  3. METAMeta Platforms, Inc.
    +$226.9MNewHistory
  4. CRWVCoreWeave, Inc.
    +$130.8MAddedHistory
  5. APHAmphenol Corp
    +$112.9MNewHistory

Largest weight increases

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

  1. SPCXSpace Exploration Technologies Corp
    +41.89 pp0.0% → 41.9%History
  2. CBRSCerebras Systems Inc.
    +6.17 pp0.0% → 6.2%History
  3. METAMeta Platforms, Inc.
    +2.04 pp0.0% → 2.0%History
  4. APHAmphenol Corp
    +1.01 pp0.0% → 1.0%History
  5. GTLBGitlab Inc.
    +0.92 pp0.0% → 0.9%History

Biggest sells

Reduced and sold-out positions, by estimated amount sold

  1. ALABAstera Labs, Inc.
    −$1.04BReducedHistory
  2. LITELumentum Holdings Inc.
    −$187.9MSold outHistory
  3. ECHOEchoStar CORP
    −$117.1MSold outHistory
  4. ZMZoom Communications, Inc.
    −$105.8MSold outHistory
  5. RKTRocket Companies, Inc.
    −$87.1MSold outHistory

Largest weight decreases

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

  1. LITELumentum Holdings Inc.
    −4.58 pp4.6% → 0.0%History
  2. UUnity Software Inc.
    −3.99 pp6.6% → 2.6%History
  3. ALABAstera Labs, Inc.
    −3.72 pp9.0% → 5.3%History
  4. ECHOEchoStar CORP
    −2.85 pp2.9% → 0.0%History
  5. ZMZoom Communications, Inc.
    −2.58 pp2.6% → 0.0%History

Metrics

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

Portfolio value
$11.1B
+$7.04B (+171.6%) vs. prior quarter
Positions
46
−5 vs. prior quarter
Top 10 concentration
76.3%
Top 10 as share of value
Turnover
31.0%
Q2 2026, one quarter
Average holding period
3.9 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 $11.1B (Q2 2026)

Q1 2021: $3.10BQ2 2021: $3.91BQ3 2021: $3.90BQ4 2021: $3.16BQ1 2022: $2.81BQ2 2022: $2.42BQ3 2022: $2.70BQ4 2022: $2.54BQ1 2023: $2.82BQ2 2023: $3.29BQ3 2023: $2.88BQ4 2023: $2.78BQ1 2024: $3.33BQ2 2024: $3.06BQ3 2024: $2.96BQ4 2024: $3.19BQ1 2025: $2.75BQ2 2025: $3.60BQ3 2025: $3.85BQ4 2025: $4.71BQ1 2026: $4.10BQ2 2026: $11.1B
Q1 2021Q2 2026
13F filings of Atreides Management, LP by quarter
QuarterFiledPositionsValueTop 3 holdingsChangesFiling
Q2 2026Aug 14, 202646$11.1BSPCXMUCBRSvs. Q1 2026SEC
Q1 2026May 18, 202651$4.10BALABUCIENvs. Q4 2025SEC
Q4 2025Feb 17, 202649$4.71BNVDACIENUvs. Q3 2025SEC
Q3 2025Nov 14, 202556$3.85BPGTLBUvs. Q2 2025SEC
Q2 2025Aug 14, 202548$3.60BAMDPGTLBvs. Q1 2025SEC
Q1 2025May 15, 202541$2.75BALABAMDUvs. Q4 2024SEC
Q4 2024Feb 14, 202544$3.19BALABAMDASMLvs. Q3 2024SEC
Q3 2024Nov 14, 202435$2.96BALABAMDAMZNvs. Q2 2024SEC
Q2 2024Aug 14, 202440$3.06BMRVLCIENAMDvs. Q1 2024SEC
Q1 2024May 15, 202434$3.33BMRVLSEACVAvs. Q4 2023SEC
Q4 2023Feb 14, 202432$2.78BRHSEAMDvs. Q3 2023SEC
Q3 2023Nov 14, 202327$2.88BAMDSERHvs. Q2 2023SEC
Q2 2023Aug 14, 202331$3.29BRHPPYPLvs. Q1 2023SEC
Q1 2023May 15, 202330$2.82BAMDDKSMRVLvs. Q4 2022SEC
Q4 2022Feb 14, 202334$2.54BAMDDKSXYZvs. Q3 2022SEC
Q3 2022Nov 14, 202237$2.70BAMZNDKSAMDvs. Q2 2022SEC
Q2 2022Aug 15, 202239$2.42BAMZNMETADKSvs. Q1 2022SEC
Q1 2022May 16, 202236$2.81BAMZNGOOGLTTWOvs. Q4 2021SEC
Q4 2021Feb 14, 202235$3.16BAMZNINTCAEOvs. Q3 2021SEC
Q3 2021Nov 15, 202137$3.90BDKSPENNTWTRvs. Q2 2021SEC
Q2 2021Aug 16, 202141$3.91BTWTRAEODKSvs. Q1 2021SEC
Q1 2021Jun 1, 2021Amended47$3.10BTWTRAMDAEO–SEC

13D and 13G filings

Companies where Atreides Management, LP reports owning 5% or more on Schedule 13D or 13G, and its latest filings.

Current stakes of 5% or more

2 companies, largest stake first.

Companies where Atreides Management, LP owns 5% or more
CompanyLatest formStakeChangeFirst filedLatest filingFiling
CBRSCerebras Systems Inc.13G10.70%10.5M sharesNewAug 14, 20261 filingAug 14, 2026SEC
ACVAACV Auctions Inc.13G/A5.70%9.91M shares+0.10 ppfrom 5.60%Feb 14, 20236 filingsAug 14, 2026SEC

Latest filings

13 filings on file made by Atreides Management, LP or listing it as a reporting person, newest first.

Schedule 13D and 13G filings by Atreides Management, LP
CompanyFiled (ET)FormStakeChangeEvent dateFiling
CBRSCerebras Systems Inc.Aug 14, 20264:22 PM ET13G10.70%10.5M sharesNewJun 30, 2026SEC
ACVAACV Auctions Inc.Aug 14, 20264:20 PM ET13G/A5.70%9.91M shares+0.10 ppfrom 5.60%Jun 30, 2026SEC
ACVAACV Auctions Inc.May 15, 20264:16 PM ET13G/A5.60%9.74M shares−1.60 ppfrom 7.20%Mar 31, 2026SEC
ACVAACV Auctions Inc.Feb 17, 20264:07 PM ET13G7.20%12.4M shares–Dec 31, 2025SEC
ALABAstera Labs, Inc.Feb 14, 20254:04 PM ET13G/A1.20%1.84M shares–Below 5%Dec 31, 2024SEC
RHRHNov 14, 202413G/AOld format–––SEC
ACVAACV Auctions Inc.Nov 14, 202413G/AOld format–––SEC
ALABAstera Labs, Inc.Nov 14, 202413GOld format–New–SEC
RHRHFeb 14, 202413GOld format–New–SEC
SONDSonder Holdings Inc.Feb 14, 202413G/AOld format–––SEC
ACVAACV Auctions Inc.Feb 14, 202413G/AOld format–––SEC
SONDSonder Holdings Inc.Feb 14, 202313GOld format–New–SEC
ACVAACV Auctions Inc.Feb 14, 202313GOld format–New–SEC