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CastleKnight Management LP — 13F Holdings & Portfolio

CIK 1835751 · latest 13F-HR filed 2026-08-14

Backtest portfolio

CastleKnight Management LP manages $7.38B in 13F-reported U.S. long-equity assets across 488 reported positions as of its 2026-06-30 13F-HR filing. Its largest disclosed positions are QQQ (12.77%), IWM (9.68%), IWM (9.32%). Quarter over quarter (versus its 2026-03-31 filing) the fund opened 71 new positions, exited 49, added to 189, and trimmed 116.

AUM is the long-equity portion reported on Form 13F-HR. Excludes short positions, cash, foreign holdings, and non-13F assets. For informational purposes only — not investment advice.

Filer Information
Address
888 SEVENTH AVENUE
24TH FLOOR
NEW YORK, NY 10019
Phone
(212) 852-6300
Filing Manager
CastleKnight Management LP
New York, NY
Signatory
Christopher H. Sullivan
CCO, COO & CFO
Loading holdings…
AUM

$7.38B

Long-equity book

Holdings

488

Distinct positions

Period

2026-06-30

Filed 2026-08-14

Q/Q Activity

+71 / −49 / ↑189 / ↓116

vs 2026-03-31

Firm Profile & Key People
Name Title / Status Ownership Type

Top Adds (vs prior quarter)

  • FERMI INC$29.3M +3261.7%
  • STARZ ENTERTAINMENT CORP.$26.8M +294.5%
  • META PLATFORMS INC$26.5M +519.5%
  • IREN LIMITED$26.4M +95.5%
  • INTERNATIONAL SEAWAYS INC$23.6M +112.9%
Show all 189 →

Top Trims

  • MARVELL TECHNOLOGY INC-$44.8M -90.5%
  • MICRON TECHNOLOGY INC-$23.3M -47.6%
  • SANDISK CORP-$18.5M -77.6%
  • CF INDUSTRIES HOLD-$17.2M -95.1%
  • SANMINA CORP-$16.7M -49.6%
Show all 116 →

New Positions

  • NXP SEMICONDUCTORS N V$41.8M
  • KEEL INFRASTRUCTURE CORP$36.6M
  • LIFTOFF MOBILE INC$27.2M
  • SK TELECOM CO LTD$15.8M
  • WIX COM LTD$15.7M
Show all 71 →

Exited Positions

  • BITFARMS LTD$21.2M
  • CHORD ENERGY CORPORATION$7.6M
  • DELTA AIR LINES INC$7.3M
  • OPTIMUM COMMUNICATIONS INC$7.1M
  • APA CORPORATION$6.8M
Show all 49 →
All Holdings

Rows tagged Call or Put are options positions, not stock. Per SEC Form 13F-HR, Value shows the notional value of the underlying (shares covered × underlying price), not the option premium. Shares is the number of underlying shares covered (divide by 100 for contract count).

# Issuer Symbol CUSIP Value Weight Shares Type
1 INVESCO QQQ TR Call QQQ 46090E103 $942.6M 12.77% 1,280,000 SH
2 ISHARES TR Put IWM 464287655 $715.1M 9.68% 2,380,000 SH
3 ISHARES TR Call IWM 464287655 $688.0M 9.32% 2,290,000 SH
4 STATE STR SPDR S&P 500 ETF T Put SPY 78462F103 $619.8M 8.39% 830,000 SH
5 INVESCO QQQ TR Put QQQ 46090E103 $405.0M 5.49% 550,000 SH
6 STATE STR SPDR S&P 500 ETF T Call SPY 78462F103 $291.2M 3.94% 390,000 SH
7 ALPHABET INC Call GOOGL 02079K305 $78.6M 1.06% 220,000 SH
8 NXP SEMICONDUCTORS N V Call NXPI N6596X109 $70.3M 0.95% 250,000 SH
9 NVIDIA CORPORATION Call NVDA 67066G104 $60.0M 0.81% 300,000 SH
10 CELESTICA INC Call CLS 15101Q207 $58.4M 0.79% 160,000 SH
11 IREN LIMITED IREN Q4982L109 $54.0M 0.73% 1,181,175 SH
12 META PLATFORMS INC Call META 30303M102 $53.5M 0.72% 95,000 SH
13 CELESTICA INC CLS 15101Q207 $52.9M 0.72% 145,015 SH
14 NVIDIA CORPORATION NVDA 67066G104 $52.5M 0.71% 262,300 SH
15 PBF ENERGY INC PBF 69318G106 $51.2M 0.69% 1,124,676 SH
16 AMAZON COM INC Call AMZN 023135106 $50.1M 0.68% 210,000 SH
17 COMMUNITY HEALTH SYS INC NEW CYH 203668108 $44.7M 0.61% 13,384,586 SH
18 INTERNATIONAL SEAWAYS INC INSW Y41053102 $44.5M 0.60% 580,911 SH
19 MODINE MFG CO Call MOD 607828100 $44.1M 0.60% 165,000 SH
20 BITDEER TECHNOLOGIES GROUP BTDR G11448100 $44.0M 0.60% 2,773,910 SH
21 NXP SEMICONDUCTORS N V NXPI N6596X109 $41.8M 0.57% 148,900 SH
22 AMAZON COM INC AMZN 023135106 $40.5M 0.55% 170,090 SH
23 ALPHABET INC GOOGL 02079K305 $40.1M 0.54% 112,200 SH
24 NORDIC AMERICAN TANKERS LIMI NAT G65773106 $39.7M 0.54% 7,172,359 SH
25 COREWEAVE INC CRWV 21873S108 $38.5M 0.52% 386,500 SH
26 DHT HOLDINGS INC DHT Y2065G121 $37.1M 0.50% 2,242,216 SH
27 KEEL INFRASTRUCTURE CORP KEEL 486917107 $36.6M 0.50% 6,369,661 SH
28 INTERNATIONAL SEAWAYS INC Call INSW Y41053102 $36.0M 0.49% 470,000 SH
29 HUDBAY MINERALS INC HBM 443628102 $35.9M 0.49% 1,522,100 SH
30 STARZ ENTERTAINMENT CORP. STRZ 855919106 $35.9M 0.49% 1,242,780 SH
31 FRONTLINE PLC FRO M46528101 $32.8M 0.44% 943,700 SH
32 ADVANSIX INC ASIX 00773T101 $31.6M 0.43% 1,590,318 SH
33 META PLATFORMS INC META 30303M102 $31.5M 0.43% 56,000 SH
34 ZIFF DAVIS INC ZD 48123V102 $31.2M 0.42% 596,254 SH
35 BROADCOM INC AVGO 11135F101 $31.0M 0.42% 82,000 SH
36 FERMI INC FRMI 314911108 $30.2M 0.41% 3,292,022 SH
37 MICRON TECHNOLOGY INC Call MU 595112103 $29.4M 0.40% 25,500 SH
38 TAIWAN SEMICONDUCTOR MANUFAC TSM 874039100 $28.5M 0.39% 59,700 SH
39 MADISON SQUARE GRDN SPRT COR MSGS 55825T103 $28.4M 0.38% 70,639 SH
40 TSAKOS ENERGY NAVIGATION LTD TEN G9108L173 $28.3M 0.38% 799,594 SH
41 LIFTOFF MOBILE INC LFTO 53229X101 $27.2M 0.37% 1,130,800 SH
42 TALEN ENERGY CORP Call TLN 87422Q109 $26.9M 0.36% 70,000 SH
43 ISHARES INC Call EWY 464286772 $26.2M 0.36% 130,000 SH
44 MICRON TECHNOLOGY INC MU 595112103 $25.6M 0.35% 22,200 SH
45 TEEKAY TANKERS LTD TNK G8726X106 $25.4M 0.34% 391,036 SH
46 ADVANTAGE SOLUTIONS INC ADV 00791N201 $25.1M 0.34% 581,347 SH
47 TORM PLC TRMD G89479102 $24.7M 0.34% 949,724 SH
48 PROSHARES TR TBT 74347B201 $24.7M 0.33% 706,549 SH
49 TITAN AMER SA TTAM B9151N105 $24.6M 0.33% 1,318,207 SH
50 ERO COPPER CORP ERO 296006109 $24.3M 0.33% 910,184 SH
Filing History
Period Filed AUM Holdings Accession
2026-06-30 2026-08-14 $7.38B 488 0000919574-26-005559
2026-03-31 2026-05-15 $6.00B 451 0000919574-26-003331
2025-12-31 2026-02-17 $4.51B 351 0000919574-26-001183
2025-09-30 2025-11-14 $5.08B 453 0000919574-25-006966