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CastleKnight Management LP

Institutional InvestorSimilar funds →SEC EDGAR: CIK 1835751
Institutional-grade research for retail investors

Sector Allocation

  • Technology29.5%$808.5M
  • Industrials17.1%$469.0M
  • Materials9.9%$272.1M
  • Financials8.3%$228.2M
  • Communication Services7.4%$202.4M
  • Consumer Discretionary6.8%$185.5M
  • Healthcare6.1%$166.6M
  • Consumer Staples4.9%$133.3M
  • Energy4.0%$109.4M
  • Real Estate2.3%$64.2M

AUM History

13fpro.ai/research/fund/castleknight-management-lp-1835751

Conviction and streaks

Diversifying · top 10 = 17.0%

From the fund's last 12 quarters of 13F filings: positions held longest at size, and names it added to or trimmed several quarters running.

IREN$IRENConviction hold2.0% weight · held 8 quartersCLS$CLSConviction hold1.9% weight · held 9 quartersNVDA$NVDAConviction hold1.9% weight · held 10 quartersCYH$CYHConviction hold1.6% weight · held 10 quartersINSW$INSWConviction hold1.6% weight · held 5 quartersBTDR$BTDRAccumulating+3628% shares · 6 quarters running$Accumulating+151% shares · 6 quarters runningPERI$PERIAccumulating+2009% shares · 6 quarters runningAMZN$AMZNAccumulating+278% shares · 5 quarters runningNAT$NATAccumulating+407% shares · 4 quarters runningCORZ$CORZTrimming-78% shares · 5 quarters runningCORZ$CORZTrimming-86% shares · 5 quarters runningVRT$VRTTrimming-97% shares · 5 quarters runningAES$AESTrimming-79% shares · 4 quarters runningCX$CXTrimming-73% shares · 4 quarters running

Largest positions — Q2 2026

Top 20 stock positions. Options are left out: 13F reports them at the underlying's value.

13fpro.ai/research/fund/castleknight-management-lp-1835751

CastleKnight Management LP 13F holdings — Q2 2026

$7.4B portfolio (+23.1% QoQ) · 488 holdings · Q2 2026 13F · top 10 are 17% of the stock portfolio

Includes $4.6B of put/call options ($1.7B puts, $2.9B calls), which 13F rules report at the value of the underlying shares, not the premium at risk. Stocks alone: $2.7B. Weights use the stock portfolio.

All holdings — CastleKnight Management LP (Q2 2026)

488 disclosed positions from the Form 13F-HR on SEC EDGAR, with quarter-over-quarter share changes. Largest by value first; the ten above are not repeated.

Company
QQQ$QQQCALLINVESCO QQQ TRUST, SERIES 1$942.6M+75%
— PUTISHARES TR - RUSSELL 2000 ETF$715.1M+44%
— CALLISHARES TR - RUSSELL 2000 ETF$688.0M+65%
SPY$SPYPUTSPDR S&P 500 ETF TRUST$619.8M-55%
QQQ$QQQPUTINVESCO QQQ TRUST, SERIES 1$405.0M+323%
SPY$SPYCALLSPDR S&P 500 ETF TRUST$291.2M-41%
GOOGL$GOOGLCALLAlphabet Inc.$78.6M+175%
NXPI$NXPICALLNXP Semiconductors N.V.$70.3MNew
NVDA$NVDACALLNVIDIA CORP$60.0M-30%
CLS$CLSCALLCELESTICA INC$58.4M-20%
META$METACALLMeta Platforms, Inc.$53.5M+217%
AMZN$AMZNCALLAMAZON COM INC$50.1M+250%
MOD$MODCALLMODINE MANUFACTURING CO$44.1MNew
NAT$NATNORDIC AMERICAN TANKERS Ltd$39.7M+36%
CRWV$CRWVCoreWeave, Inc.$38.5M+45%

What changed in Q2 2026

Against the previous quarter's 13F: 119 new, 125 added to, 117 trimmed, 81 sold out. Share-count changes; largest moves by dollar size first.

New positions (119)

  • NXPI$NXPICALLNXP Semiconductors N.V.$70.3M

    first bought this quarter

  • MOD$MODCALLMODINE MANUFACTURING CO$44.1M

    first bought this quarter

  • NXPI$NXPINXP Semiconductors N.V.$41.8M

    first bought this quarter

  • KEEL$KEELKeel Infrastructure Corp.$36.6M

    first bought this quarter

  • INSW$INSWCALLInternational Seaways, Inc.$36.0M

    first bought this quarter

  • LFTO$LFTOLiftoff Mobile, Inc.$27.2M

    first bought this quarter

+113 more in the Excel export

Added to (125)

  • QQQ$QQQCALLINVESCO QQQ TRUST, SERIES 1+75%

    now $942.6M

  • QQQ$QQQPUTINVESCO QQQ TRUST, SERIES 1+323%

    now $405.0M

  • CALLISHARES TR - RUSSELL 2000 ETF+65%

    now $688.0M

  • PUTISHARES TR - RUSSELL 2000 ETF+44%

    now $715.1M

  • GOOGL$GOOGLCALLAlphabet Inc.+175%

    now $78.6M

  • META$METACALLMeta Platforms, Inc.+217%

    now $53.5M

+119 more in the Excel export

Trimmed (117)

  • SPY$SPYPUTSPDR S&P 500 ETF TRUST-55%

    now $619.8M

  • MU$MUCALLMICRON TECHNOLOGY INC-95%

    now $29.4M

  • SPY$SPYCALLSPDR S&P 500 ETF TRUST-41%

    now $291.2M

  • MRVL$MRVLMarvell Technology, Inc.-97%

    now $4.7M · held 10+ qtrs, 3 trims in a row

  • MU$MUMICRON TECHNOLOGY INC-85%

    now $25.6M · held 10+ qtrs, 3 trims in a row

  • SIMO$SIMOSilicon Motion Technology CORP-81%

    now $20.5M · held 3 qtrs

+111 more in the Excel export

Sold out (81)

  • SNDK$SNDKCALLSandisk Corpwas $116.3M
  • CF$CFCALLCF Industries Holdings, Inc.was $27.3M
  • AMAT$AMATCALLAPPLIED MATERIALS INC /DEwas $23.9M
  • BITFARMS LTDwas $21.2M
  • AMD$AMDCALLADVANCED MICRO DEVICES INCwas $20.3M
  • CVI$CVICALLCVR ENERGY INCwas $16.8M

+75 more in the Excel export

Firm AUM (Form ADV): $4.1B as of 2025-12-31 · SEC IAPD

Share

Holdings by quarter

Every 13F CastleKnight Management LP has filed, 18 earlier quarters. Pick one to see what it held then.

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Is it too late to follow CastleKnight Management?

Q2 2026 13F filed with the SEC on Aug 14, 2026. Prices are closing prices as of Oct 27, 2026.

Average quality of CastleKnight Management's top 20 holdings: 59/100 (our AI quality score, weighted by position size; 15 of the 20 are scored)

Top 10 since filing

-7.4%

Value-weighted move of the 10 largest stock positions

Turnover

37%

Last quarter; 107% over the last 4

Top 10 weight

17%

Share of the stock portfolio in its 10 largest positions

Held 4+ quarters

66%

Share of portfolio value in positions held a year or more

Highest-quality names it owns(among its 100 largest positions)

The 8 highest-scoring companies in this portfolio are a Pro feature.

How these are measured
  • Moves since the quarter-end and since the filing date use our own daily closing prices, from the close on (or just before) each date to the latest close.
  • Turnover is the lesser of shares bought or sold in a quarter, valued at the quarter-end prices in the 13F, divided by the average of the two quarters' stock portfolio values.
  • Quarters held and add/trim streaks count back only through quarters whose filed holdings add up to the filing's own cover-page total (back to Q1 2024 for this fund). A change counts as an add or a trim when the split-adjusted share count moves by more than 1%.
  • Estimate, not the fund's reported cost. For each quarter in the current holding period in which the fund's share count rose (split-adjusted), we take that quarter's average daily close and weight it by the shares added; sales do not change an average cost. Quarters where the stock's price history and the 13F's own implied price disagree by more than 2x are left out.
  • Put and call option rows report the value of the underlying shares, not a position the fund paid for, so they are left out of all of the above.

Portfolio Overview

CastleKnight Management LP disclosed 488 positions worth $7.4B in its Form 13F-HR for Q2 2026 — $2.7B in common stock plus $4.6B of put/call option positions (reported at underlying notional value, not premium at risk), led by $IREN (IREN Ltd) at 2.0% of the equity portfolio, followed by $CLS and $NVDA. During the quarter the fund opened 119 new positions and exited 81 — including a new stake in $NXPI and a full exit from $SNDK. The portfolio is most concentrated in Technology (29.5% of disclosed assets). All figures are sourced directly from CastleKnight Management LP’s Form 13F-HR filing with the SEC under CIK 1835751.

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AI-Powered Hedge Fund Analysis: CastleKnight Management LP

13F Pro is an AI hedge fund tracker and stock research platform. For CastleKnight Management LP (SEC CIK: 1835751), the platform ingests every quarterly Form 13F filing and applies AI-powered analysis on top — 10 specialized AI analysts (value, growth, momentum, macro, activist, and more) debate the fund's top positions and publish AI-generated analysis with cited SEC sources.

Every holding in CastleKnight Management LP's portfolio is scored on an AI quality ranking built from its SEC filings (ROIC, FCF margin, revenue growth, institutional flow, earnings quality, shareholder dilution, and more). Track accumulation and distribution quarter over quarter, identify conviction positions, and see AI stock analysis for each position — alongside 8,700+ other institutional filers and 2,800+ AI-ranked companies.