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Livermore
Livermore
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CSS LLC

SEC CIK
0001103646
Latest filing
Aug 14, 2026

The latest 13F from CSS LLC covers Q2 2026 (filed Aug 14, 2026): 766 long positions worth $2.25B. The top 10 holdings make up 40.0% of the portfolio, and the largest is Lumentum Hldgs Inc at 10.9%. Livermore has 22 filings on Form 13F from this institution, going back to Q1 2021.

What changed in Q2 2026

Full comparison

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.

New
208
Est. +$417.9M
Added
170
Est. +$365.4M
Reduced
179
Est. −$79.3M
Sold out
181
Est. −$356.5M

Top 5 holdings

Share of this quarter's portfolio value

  1. Lumentum Hldgs Inc55024UAF6
    10.9%$245.6M
  2. HPE.PCHewlett Packard Enterprise Co
    6.6%$149.3MHistory
  3. EchoStar CORP278768AB2
    6.1%$137.4M
  4. Apollo Global Mgmt Inc03769M304
    3.7%$82.8M
  5. Bank of Amer Corp060505682
    2.8%$63.3M

Share of portfolio

Top 5 holdings and the other 761 positions, by share of portfolio value

  1. Lumentum Hldgs Inc10.9%
  2. HPE.PC6.6%
  3. EchoStar CORP6.1%
  4. Apollo Global Mgmt Inc3.7%
  5. Bank of Amer Corp2.8%
  6. Other 761 positions69.8%

Biggest buys

New and added positions, by estimated amount bought

  1. HPE.PCHewlett Packard Enterprise Co
    +$135.9MAddedHistory
  2. Apollo Global Mgmt Inc03769M304
    +$65.9MAdded
  3. Bank of Amer Corp060505682
    +$50.3MAdded
  4. SMCIPSuper Micro Computer, Inc.
    +$45.3MNewHistory
  5. MCHPPMicrochip Technology Inc
    +$43.0MNewHistory

Largest weight increases

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

  1. HPE.PCHewlett Packard Enterprise Co
    +6.23 pp0.4% → 6.6%History
  2. Apollo Global Mgmt Inc03769M304
    +2.78 pp0.9% → 3.7%
  3. Bank of Amer Corp060505682
    +2.13 pp0.7% → 2.8%
  4. SMCIPSuper Micro Computer, Inc.
    +2.01 pp0.0% → 2.0%History
  5. MCHPPMicrochip Technology Inc
    +1.91 pp0.0% → 1.9%History

Biggest sells

Reduced and sold-out positions, by estimated amount sold

  1. Jazz Investments I Ltd472145AF8
    −$63.9MSold out
  2. Live Nation Entertainment IN538034BA6
    −$49.9MSold out
  3. Stride, Inc.86333MAA6
    −$17.8MSold out
  4. NEE.PVNextera Energy Inc
    −$17.7MReducedHistory
  5. CSG Sys Intl Inc126349AH2
    −$9.13MSold out

Largest weight decreases

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

  1. Jazz Investments I Ltd472145AF8
    −3.56 pp3.6% → 0.0%
  2. Live Nation Entertainment IN538034BA6
    −2.78 pp2.8% → 0.0%
  3. NEE.PVNextera Energy Inc
    −1.15 pp1.5% → 0.4%History
  4. Stride, Inc.86333MAA6
    −0.99 pp1.0% → 0.0%
  5. CSG Sys Intl Inc126349AH2
    −0.51 pp0.5% → 0.0%

Metrics

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

Portfolio value
$2.25B
+$449.7M (+25.0%) vs. prior quarter
Positions
766
+27 vs. prior quarter
Top 10 concentration
40.0%
Top 10 as share of value
Turnover
21.6%
Q2 2026, one quarter
Average holding period
5.0 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 $2.37B (Q1 2022)

Q1 2021: $1.86BQ2 2021: $1.89BQ3 2021: $1.88BQ4 2021: $2.25BQ1 2022: $2.37BQ2 2022: $2.08BQ3 2022: $1.73BQ4 2022: $1.53BQ1 2023: $1.32BQ2 2023: $1.30BQ3 2023: $1.20BQ4 2023: $1.28BQ1 2024: $1.23BQ2 2024: $1.36BQ3 2024: $1.72BQ4 2024: $1.68BQ1 2025: $1.43BQ2 2025: $1.58BQ3 2025: $1.68BQ4 2025: $1.77BQ1 2026: $1.80BQ2 2026: $2.25B
Q1 2021Q2 2026
13F filings of CSS LLC by quarter
QuarterFiledPositionsValueTop 3 holdingsChangesFiling
Q2 2026Aug 14, 2026766$2.25BLumentum Hldgs IncHPE.PCEchoStar CORPvs. Q1 2026SEC
Q1 2026May 15, 2026739$1.80BLumentum Hldgs IncEchoStar CORPJazz Investments I Ltdvs. Q4 2025SEC
Q4 2025Feb 17, 2026751$1.77BEchoStar CORPLumentum Hldgs IncJazz Investments I Ltdvs. Q3 2025SEC
Q3 2025Nov 13, 2025691$1.68BStride, Inc.Ionis Pharmaceuticals IncLive Nation Entertainment INvs. Q2 2025SEC
Q2 2025Aug 14, 2025673$1.58BStride, Inc.Ionis Pharmaceuticals IncJazz Investments I Ltdvs. Q1 2025SEC
Q1 2025May 15, 2025630$1.43BAmerican Airls Group IncStride, Inc.INSMED Incvs. Q4 2024SEC
Q4 2024Feb 18, 2025639$1.68BAxon Enterprise, Inc.American Airls Group IncStride, Inc.vs. Q3 2024SEC
Q3 2024Nov 14, 2024596$1.72BAxon Enterprise, Inc.CCLAmerican Airls Group Incvs. Q2 2024SEC
Q2 2024Aug 14, 2024571$1.36BRoyal Caribbean GroupAmerican Airls Group IncMacom Tech Solutions Hldgs Ivs. Q1 2024SEC
Q1 2024May 15, 2024566$1.23BRoyal Caribbean GroupAmerican Airls Group IncMacom Tech Solutions Hldgs Ivs. Q4 2023SEC
Q4 2023Feb 14, 2024538$1.28BRoyal Caribbean GroupNEAmerican Airls Group Incvs. Q3 2023SEC
Q3 2023Nov 14, 2023567$1.20BRoyal Caribbean GroupNEAmerican Airls Group Incvs. Q2 2023SEC
Q2 2023Aug 14, 2023595$1.30BDexcom IncNEAmerican Airls Group Incvs. Q1 2023SEC
Q1 2023May 15, 2023564$1.32BDexcom IncPG&E CorpNEvs. Q4 2022SEC
Q4 2022Feb 14, 2023698$1.53BDexcom IncPG&E CorpEXEvs. Q3 2022SEC
Q3 2022Nov 14, 2022754$1.73BAntero Resources CorpDexcom IncGFL Environmental Inc.vs. Q2 2022SEC
Q2 2022Aug 15, 2022828$2.08BBroadcom Inc.Antero Resources CorpDexcom Incvs. Q1 2022SEC
Q1 2022May 16, 2022888$2.37BBroadcom Inc.Dexcom IncAntero Resources Corpvs. Q4 2021SEC
Q4 2021Feb 14, 2022980$2.25BBroadcom Inc.Dexcom IncAntero Resources Corpvs. Q3 2021SEC
Q3 2021Nov 15, 2021933$1.88BDexcom IncWayfair Inc.Nextera Energy Incvs. Q2 2021SEC
Q2 2021Aug 16, 2021834$1.89BDexcom IncWayfair Inc.Chegg, Incvs. Q1 2021SEC
Q1 2021May 17, 2021704$1.86BWayfair Inc.Dexcom IncAAL–SEC

13D and 13G filings

Companies where CSS LLC reports owning 5% or more on Schedule 13D or 13G, and its latest filings.

Current stakes of 5% or more

6 companies, largest stake first.

Companies where CSS LLC owns 5% or more
CompanyLatest formStakeChangeFirst filedLatest filingFiling
SWZTotal Return Securities Fund13G/A7.87%1.02M shares−2.07 ppfrom 9.94%Dec 3, 20254 filingsApr 17, 2026SEC
MXEMexico Equity & Income Fund Inc13G/A7.56%332.6K shares−1.41 ppfrom 8.97%Nov 12, 20213 filingsFeb 13, 2026SEC
SPESpecial Opportunities Fund, Inc.13G/A7.23%817.0K shares–Dec 29, 20233 filingsNov 9, 2026SEC
WOLFWolfspeed, Inc.13G5.91%3.04M sharesNewJun 8, 20261 filingJun 8, 2026SEC
OHACOceanhawk Acquisition Corp.13G5.49%1.04M sharesNewOct 6, 20261 filingOct 6, 2026SEC
HERZHerzfeld Credit Income Fund, Inc13G5.49%110.8K sharesNewOct 20, 20261 filingOct 20, 2026SEC

Latest filings

46 filings on file made by CSS LLC or listing it as a reporting person; the latest 20 are shown.

Schedule 13D and 13G filings by CSS LLC
CompanyFiled (ET)FormStakeChangeEvent dateFiling
SPESpecial Opportunities Fund, Inc.Nov 9, 20264:45 PM ET13G/A7.23%817.0K shares–Oct 30, 2026SEC
RSFRiverNorth Capital & Income Fund, Inc.Nov 3, 20261:43 PM ET13G/A4.77%174.0K shares−1.50 ppfrom 6.27%Below 5%Jun 26, 2026SEC
LBRDALiberty Broadband CorpNov 2, 20264:17 PM ET13G/A0.00%0 shares−6.83 ppfrom 6.83%Below 5%Aug 19, 2026SEC
HERZHerzfeld Credit Income Fund, IncOct 20, 20264:40 PM ET13G5.49%110.8K sharesNewOct 7, 2026SEC
OHACOceanhawk Acquisition Corp.Oct 6, 20263:59 PM ET13G5.49%1.04M sharesNewJun 9, 2026SEC
WOLFWolfspeed, Inc.Jun 8, 20264:56 PM ET13G5.91%3.04M sharesNewJun 5, 2026SEC
SWZTotal Return Securities FundApr 17, 20262:35 PM ET13G/A7.87%1.02M shares−2.07 ppfrom 9.94%Mar 31, 2026SEC
MXEMexico Equity & Income Fund IncFeb 13, 20264:16 PM ET13G/A7.56%332.6K shares−1.41 ppfrom 8.97%Dec 31, 2025SEC
SWZTotal Return Securities FundDec 31, 202512:24 PM ET13G/A9.94%1.69M shares−0.33 ppfrom 10.27%Dec 30, 2025SEC
RSFRiverNorth Capital & Income Fund, Inc.Dec 19, 20254:10 PM ET13G/A6.27%266.7K shares+1.19 ppfrom 5.08%Dec 16, 2025SEC
SWZTotal Return Securities FundDec 16, 20252:14 PM ET13G/A10.27%1.74M shares+1.27 ppfrom 8.99%Dec 12, 2025SEC
SWZTotal Return Securities FundDec 3, 20254:22 PM ET13G8.99%1.22M sharesNewNov 20, 2025SEC
RSFRiverNorth Capital & Income Fund, Inc.Nov 26, 20259:52 AM ET13G/A5.08%215.8K shares+0.20 ppfrom 4.88%Nov 19, 2025SEC
CHNChina Fund, Inc.Nov 6, 20254:49 PM ET13G/A0.00%0 shares−8.26 ppfrom 8.26%Below 5%Oct 31, 2025SEC
CHNChina Fund, Inc.Oct 30, 20255:06 PM ET13G/A8.26%825.5K shares+1.32 ppfrom 6.94%Oct 28, 2025SEC
RSFRiverNorth Capital & Income Fund, Inc.Oct 21, 20255:07 PM ET13G/A4.88%207.4K shares−1.43 ppfrom 6.31%Below 5%Oct 6, 2025SEC
CHNChina Fund, Inc.Oct 10, 20259:53 AM ET13G/A6.94%693.3K shares+1.62 ppfrom 5.32%Sep 30, 2025SEC
CHNChina Fund, Inc.Aug 28, 20254:08 PM ET13G5.32%531.2K sharesNewAug 22, 2025SEC
LBRDALiberty Broadband CorpAug 21, 20254:20 PM ET13G6.83%26.4K sharesNewAug 7, 2025SEC
MXEMexico Equity & Income Fund IncAug 19, 20254:39 PM ET13G/A8.97%394.9K shares–Aug 14, 2025SEC