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Livermore
Livermore
ZHEN

Paloma Partners Management Co

SEC CIK
0001103882
Latest filing
Aug 14, 2026

The latest 13F from Paloma Partners Management Co covers Q2 2026 (filed Aug 14, 2026): 19 long positions worth $420.9M. The top 10 holdings make up 96.0% of the portfolio, and the largest is Guardant Health, Inc. at 20.3%. 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
15
Est. +$311.0M
Added
0
Reduced
1
Est. −$17.5M
Sold out
39
Est. −$98.8M

Top 5 holdings

Share of this quarter's portfolio value

  1. Guardant Health, Inc.40131MAD1
    20.3%$85.3M
  2. Alibaba Group Hldg Ltd01609WBG6
    16.0%$67.3M
  3. BridgeBio Pharma, Inc.10806XAJ1
    13.3%$55.8M
  4. Cloudflare, Inc.18915MAF4
    11.9%$50.2M
  5. Snowflake Inc.833445AD1
    10.2%$43.0M

Share of portfolio

Top 5 holdings and the other 14 positions, by share of portfolio value

  1. Guardant Health, Inc.20.3%
  2. Alibaba Group Hldg Ltd16.0%
  3. BridgeBio Pharma, Inc.13.3%
  4. Cloudflare, Inc.11.9%
  5. Snowflake Inc.10.2%
  6. Other 14 positions28.3%

Biggest buys

New and added positions, by estimated amount bought

  1. Guardant Health, Inc.40131MAD1
    +$85.3MNew
  2. BridgeBio Pharma, Inc.10806XAJ1
    +$55.8MNew
  3. Cloudflare, Inc.18915MAF4
    +$50.2MNew
  4. Snowflake Inc.833445AD1
    +$43.0MNew
  5. GameStop Corp.36467WAG4
    +$23.6MNew

Largest weight increases

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

  1. Guardant Health, Inc.40131MAD1
    +20.28 pp0.0% → 20.3%
  2. BridgeBio Pharma, Inc.10806XAJ1
    +13.26 pp0.0% → 13.3%
  3. Cloudflare, Inc.18915MAF4
    +11.93 pp0.0% → 11.9%
  4. Snowflake Inc.833445AD1
    +10.22 pp0.0% → 10.2%
  5. GameStop Corp.36467WAG4
    +5.60 pp0.0% → 5.6%

Biggest sells

Reduced and sold-out positions, by estimated amount sold

  1. CTRICenturi Holdings, Inc.
    −$17.5MReducedHistory
  2. VSATViasat Inc
    −$12.5MSold outHistory
  3. AVGOBroadcom Inc.
    −$6.81MSold outHistory
  4. INTCIntel Corp
    −$6.62MSold outHistory
  5. AMZNAmazon Com Inc
    −$5.21MSold outHistory

Largest weight decreases

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

  1. CTRICenturi Holdings, Inc.
    −9.92 pp10.2% → 0.3%History
  2. VSATViasat Inc
    −7.07 pp7.1% → 0.0%History
  3. AVGOBroadcom Inc.
    −3.84 pp3.8% → 0.0%History
  4. INTCIntel Corp
    −3.74 pp3.7% → 0.0%History
  5. AMZNAmazon Com Inc
    −2.94 pp2.9% → 0.0%History

Metrics

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

Portfolio value
$420.9M
+$243.7M (+137.6%) vs. prior quarter
Positions
19
−24 vs. prior quarter
Top 10 concentration
96.0%
Top 10 as share of value
Turnover
38.9%
Q2 2026, one quarter
Average holding period
2.0 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 $3.80B (Q2 2021)

Q1 2021: $3.38BQ2 2021: $3.80BQ3 2021: $2.30BQ4 2021: $3.15BQ1 2022: $1.32BQ2 2022: $1.00BQ3 2022: $511.6MQ4 2022: $457.9MQ1 2023: $454.0MQ2 2023: $433.1MQ3 2023: $482.4MQ4 2023: $607.9MQ1 2024: $692.1MQ2 2024: $1.16BQ3 2024: $1.88BQ4 2024: $1.52BQ1 2025: $534.1MQ2 2025: $441.1MQ3 2025: $502.5MQ4 2025: $291.0MQ1 2026: $177.1MQ2 2026: $420.9M
Q1 2021Q2 2026
13F filings of Paloma Partners Management Co by quarter
QuarterFiledPositionsValueTop 3 holdingsChangesFiling
Q2 2026Aug 14, 202619$420.9MGuardant Health, Inc.Alibaba Group Hldg LtdBridgeBio Pharma, Inc.vs. Q1 2026SEC
Q1 2026May 15, 202643$177.1MAlibaba Group Hldg LtdCTRIVSATvs. Q4 2025SEC
Q4 2025Feb 17, 202647$291.0MAlibaba Group Hldg LtdNIO Inc.EchoStar CORPvs. Q3 2025SEC
Q3 2025Nov 14, 202570$502.5MAlibaba Group Hldg LtdEchoStar CORPNIO Inc.vs. Q2 2025SEC
Q2 2025Aug 14, 202587$441.1MSSR MNG IncNIO Inc.NIO Inc.vs. Q1 2025SEC
Q1 2025May 15, 2025107$534.1MSSR MNG IncNIO Inc.ZTO Express (Cayman) Inc.vs. Q4 2024SEC
Q4 2024Feb 14, 2025191$1.52BCOPAAINTCvs. Q3 2024SEC
Q3 2024Nov 14, 2024824$1.88BAANIO Inc.Seagate HDD Caymanvs. Q2 2024SEC
Q2 2024Aug 14, 2024792$1.16BInvesco QQQ Trust Series ICree IncGuess Incvs. Q1 2024SEC
Q1 2024May 15, 2024491$692.1MCPECheesecake Factory IncRivian Automotive, Inc.vs. Q4 2023SEC
Q4 2023Feb 14, 2024276$607.9MSea LtdVNET Group, Inc.GLDvs. Q3 2023SEC
Q3 2023Nov 14, 2023219$482.4MSea LtdLi Auto Inc.VNET Group, Inc.vs. Q2 2023SEC
Q2 2023Aug 14, 2023228$433.1MSea LtdNIO Inc.iShares Trvs. Q1 2023SEC
Q1 2023May 15, 2023198$454.0MiQIYI, Inc.Sea LtdBilibili Inc.vs. Q4 2022SEC
Q4 2022Feb 14, 2023300$457.9MBilibili Inc.Huazhu Group LtdSea Ltdvs. Q3 2022SEC
Q3 2022Nov 14, 2022353$511.6MBilibili Inc.Sea LtdZendesk, Inc.vs. Q2 2022SEC
Q2 2022Aug 15, 2022621$1.00BBilibili Inc.Sea LtdZendesk, Inc.vs. Q1 2022SEC
Q1 2022May 16, 20221,257$1.32BPalo Alto Networks IncZendesk, Inc.Bilibili Inc.vs. Q4 2021SEC
Q4 2021Feb 14, 20221,466$3.15BEtsy IncSquare IncHuazhu Group Ltdvs. Q3 2021SEC
Q3 2021Nov 15, 2021827$2.30BSea LtdBilibili Inc.Square Incvs. Q2 2021SEC
Q2 2021Aug 16, 20211,477$3.80BBilibili Inc.Zillow Group, Inc.Microchip Technology Incvs. Q1 2021SEC
Q1 2021May 17, 20211,770$3.38BZillow Group, Inc.Southwest Airls CoZillow Group, Inc.–SEC

13D and 13G filings

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

Current stakes of 5% or more

1 company, largest stake first.

Companies where Paloma Partners Management Co owns 5% or more
CompanyLatest formStakeChangeFirst filedLatest filingFiling
BTDRBitdeer Technologies Group13G9.00%18.2M sharesNewJun 18, 20261 filingJun 18, 2026SEC

Latest filings

6 filings on file made by Paloma Partners Management Co or listing it as a reporting person, newest first.

Schedule 13D and 13G filings by Paloma Partners Management Co
CompanyFiled (ET)FormStakeChangeEvent dateFiling
BTDRBitdeer Technologies GroupJun 18, 20264:58 PM ET13G9.00%18.2M sharesNewMay 28, 2026SEC
EVVEaton Vance Ltd Duration Income FundFeb 23, 202313D/AOld format–––SEC
EVVEaton Vance Ltd Duration Income FundSep 23, 202213DOld format–––SEC
EVVEaton Vance Ltd Duration Income FundApr 14, 202213G/AOld format–––SEC
EVVEaton Vance Ltd Duration Income FundFeb 11, 202213G/AOld format–––SEC
EVVEaton Vance Ltd Duration Income FundJan 21, 202113GOld format–New–SEC