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Livermore
Livermore
ZHEN

CastleKnight Management LP

SEC CIK
0001835751
Latest filing
Aug 14, 2026

The latest 13F from CastleKnight Management LP covers Q2 2026 (filed Aug 14, 2026): 402 long positions worth $2.74B. The top 10 holdings make up 17.0% of the portfolio, and the largest is IREN Ltd (IREN) at 2.0%. Livermore has 19 filings on Form 13F from this institution, going back to Q4 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
69
Est. +$355.0M
Added
108
Est. +$537.9M
Reduced
98
Est. −$885.2M
Sold out
47
Est. −$147.9M

Top 5 holdings

Share of this quarter's portfolio value

  1. IRENIREN Ltd
    2.0%$54.0MHistory
  2. CLSCelestica Inc
    1.9%$52.9MHistory
  3. NVDANVIDIA Corp
    1.9%$52.5MHistory
  4. PBFPBF Energy Inc.
    1.9%$51.2MHistory
  5. CYHCommunity Health Systems Inc
    1.6%$44.7MHistory

Biggest buys

New and added positions, by estimated amount bought

  1. NXPINXP Semiconductors N.V.
    +$41.8MNewHistory
  2. KEELKeel Infrastructure Corp.
    +$36.6MNewHistory
  3. FRMIFermi Inc.
    +$28.7MAddedHistory
  4. LFTOLiftoff Mobile, Inc.
    +$27.2MNewHistory
  5. METAMeta Platforms, Inc.
    +$26.5MAddedHistory

Largest weight increases

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

  1. NXPINXP Semiconductors N.V.
    +1.53 pp0.0% → 1.5%History
  2. KEELKeel Infrastructure Corp.
    +1.33 pp0.0% → 1.3%History
  3. FRMIFermi Inc.
    +1.06 pp<0.1% → 1.1%History
  4. LFTOLiftoff Mobile, Inc.
    +0.99 pp0.0% → 1.0%History
  5. METAMeta Platforms, Inc.
    +0.91 pp0.2% → 1.1%History

Biggest sells

Reduced and sold-out positions, by estimated amount sold

  1. MRVLMarvell Technology, Inc.
    −$144.1MReducedHistory
  2. MUMicron Technology Inc
    −$141.4MReducedHistory
  3. SIMOSilicon Motion Technology CORP
    −$87.3MReducedHistory
  4. SNDKSandisk Corp
    −$80.1MReducedHistory
  5. HUTHut 8 Corp.
    −$50.5MReducedHistory

Largest weight decreases

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

  1. MRVLMarvell Technology, Inc.
    −2.14 pp2.3% → 0.2%History
  2. MUMicron Technology Inc
    −1.35 pp2.3% → 0.9%History
  3. Bitfarms Ltd Com09173B107
    −0.99 pp1.0% → 0.0%
  4. SANMSanmina Corp
    −0.95 pp1.6% → 0.6%History
  5. SIMOSilicon Motion Technology CORP
    −0.95 pp1.7% → 0.7%History

Metrics

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

Portfolio value
$2.74B
+$606.0M (+28.3%) vs. prior quarter
Positions
402
+22 vs. prior quarter
Top 10 concentration
17.0%
Top 10 as share of value
Turnover
36.6%
Q2 2026, one quarter
Average holding period
7.0 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 (Q4 2021), so positions held before then are understated.

13F filings by quarter

19 quarters, going back to Q4 2021. Bars show each quarter's 13F portfolio value; quarters without a filing are left blank.

Peak $2.74B (Q2 2026)

Q4 2021: $275.5MQ1 2022: $365.4MQ2 2022: $323.2MQ3 2022: $316.3MQ4 2022: $345.0MQ1 2023: $393.2MQ2 2023: $489.6MQ3 2023: $586.5MQ4 2023: $623.7MQ1 2024: $679.3MQ2 2024: $746.5MQ3 2024: $860.8MQ4 2024: $913.0MQ1 2025: $934.5MQ2 2025: $1.52BQ3 2025: $1.86BQ4 2025: $1.75BQ1 2026: $2.14BQ2 2026: $2.74B
Q4 2021Q2 2026
13F filings of CastleKnight Management LP by quarter
QuarterFiledPositionsValueTop 3 holdingsChangesFiling
Q2 2026Aug 14, 2026402$2.74BIRENCLSNVDAvs. Q1 2026SEC
Q1 2026May 15, 2026380$2.14BCLSNVDAMRVLvs. Q4 2025SEC
Q4 2025Feb 17, 2026315$1.75BMUMRVLVRTvs. Q3 2025SEC
Q3 2025Nov 14, 2025367$1.86BMRVLMUMODvs. Q2 2025SEC
Q2 2025Aug 14, 2025360$1.52BVRTCYHCLSvs. Q1 2025SEC
Q1 2025May 15, 2025295$934.5MCLSVRTNVDAvs. Q4 2024SEC
Q4 2024Feb 14, 2025318$913.0MCYHPLAYFSLRvs. Q3 2024SEC
Q3 2024Nov 14, 2024322$860.8MSMCIWDCVRTvs. Q2 2024SEC
Q2 2024Aug 14, 2024298$746.5MWDCCYHVRTvs. Q1 2024SEC
Q1 2024May 15, 2024277$679.3MCYHWDCVRTvs. Q4 2023SEC
Q4 2023Feb 14, 2024272$623.7MCYHVRTMETAvs. Q3 2023SEC
Q3 2023Nov 14, 2023265$586.5MMETACYHSMCIvs. Q2 2023SEC
Q2 2023Aug 14, 2023273$489.6MVRTVMETATHvs. Q1 2023SEC
Q1 2023May 15, 2023238$393.2MCYHVRTVPBFvs. Q4 2022SEC
Q4 2022Feb 14, 2023217$345.0MNFEProShares TrVRTVvs. Q3 2022SEC
Q3 2022Nov 14, 2022219$316.3MProShares TrVRTVPBFvs. Q2 2022SEC
Q2 2022Aug 15, 2022240$323.2MProShares TrIPICYHvs. Q1 2022SEC
Q1 2022May 16, 2022231$365.4MVRTVCFIPIvs. Q4 2021SEC
Q4 2021Feb 14, 2022181$275.5MMOSIPICF–SEC

13D and 13G filings

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

Current stakes of 5% or more

CastleKnight Management LP does not currently report owning 5% or more of any company.

Latest filings

36 filings on file made by CastleKnight Management LP or listing it as a reporting person; the latest 20 are shown.

Schedule 13D and 13G filings by CastleKnight Management LP
CompanyFiled (ET)FilerFormStakeChangeEvent dateFiling
SUJASuja Life, Inc.Aug 28, 20264:36 PM ETCastleKnight Master Fund LPand 5 others13G8.10%1.92M sharesNewAug 21, 2026SEC
ADVAdvantage Solutions Inc.Aug 14, 20266:35 PM ETCastleKnight Master Fund LPand 5 others13G/A5.90%757.4K shares+0.40 ppfrom 5.50%Jun 30, 2026SEC
HAINHain Celestial Group IncAug 14, 20265:04 PM ETCastleKnight Master Fund LPand 5 others13G/A9.97%9.00M shares+1.67 ppfrom 8.30%Jun 30, 2026SEC
KLXEKLX Energy Services Holdings, Inc.Aug 14, 20265:04 PM ETCastleKnight Master Fund LPand 5 others13G/A3.50%691.7K shares−2.10 ppfrom 5.60%Below 5%Jun 30, 2026SEC
INVInnventure, Inc.Aug 14, 20265:03 PM ETCastleKnight Master Fund LPand 5 others13G/A4.70%4.15M shares−1.60 ppfrom 6.30%Below 5%Jun 30, 2026SEC
ALTGAlta Equipment Group Inc.Jul 10, 20264:21 PM ETCastleKnight Master Fund LPand 5 others13G5.50%1.80M sharesNewJul 2, 2026SEC
AMCXAMC Global Media Inc.May 27, 20266:13 PM ETCastleKnight Master Fund LPand 5 others13G5.40%1.76M sharesNewMay 19, 2026SEC
CYHCommunity Health Systems IncMay 15, 20264:50 PM ETCastleKnight Master Fund LPand 5 others13G/A9.00%12.7M shares+2.00 ppfrom 7.00%Mar 31, 2026SEC
STKLSunOpta Inc.May 15, 20264:45 PM ETCastleKnight Master Fund LPand 5 others13G/A0.00%0 shares−6.20 ppfrom 6.20%Below 5%Mar 31, 2026SEC
ASIXAdvanSix Inc.May 14, 20264:28 PM ETCastleKnight Master Fund LPand 5 others13G6.20%1.67M sharesNewMay 7, 2026SEC
STRZStarz Entertainment CorpApr 17, 20265:40 PM ETCastleKnight Master Fund LPand 5 others13G6.70%1.13M sharesNewApr 10, 2026SEC
NINENine Energy Service, Inc.Apr 9, 20262:51 PM ETCastleKnight Master Fund LPand 5 others13G8.30%1.16M sharesNewMar 31, 2026SEC
ADVAdvantage Solutions Inc.Mar 26, 20264:17 PM ETCastleKnight Master Fund LPand 5 others13G5.50%18.1M sharesNewMar 19, 2026SEC
HAINHain Celestial Group IncMar 24, 20265:12 PM ETCastleKnight Master Fund LPand 5 others13G8.30%7.60M sharesNewMar 17, 2026SEC
TENTsakos Energy Navigation LtdFeb 17, 20265:25 PM ETCastleKnight Master Fund LPand 5 others13G/A4.10%1.23M shares−3.40 ppfrom 7.50%Below 5%Dec 31, 2025SEC
LXULSB Industries, Inc.Feb 17, 20265:21 PM ETCastleKnight Master Fund LPand 5 others13G/A4.50%3.24M shares−2.30 ppfrom 6.80%Below 5%Dec 31, 2025SEC
TSEOQTrinseo PLCFeb 17, 20265:18 PM ETCastleKnight Master Fund LPand 5 others13G/A1.40%516.8K shares−6.40 ppfrom 7.80%Below 5%Dec 31, 2025SEC
KLXEKLX Energy Services Holdings, Inc.Feb 17, 20265:12 PM ETCastleKnight Master Fund LPand 5 others13G/A5.60%998.6K shares−1.20 ppfrom 6.80%Dec 31, 2025SEC
INVInnventure, Inc.Feb 17, 20265:10 PM ETCastleKnight Master Fund LPand 5 others13G/A6.30%4.44M shares+1.10 ppfrom 5.20%Dec 31, 2025SEC
CYHCommunity Health Systems IncFeb 17, 20264:49 PM ETCastleKnight Master Fund LPand 5 others13G/A7.00%9.75M shares−1.80 ppfrom 8.80%Dec 31, 2025SEC