What is SEC Form 13F? Ultimate Guide to Institutional Equity Filings
Learn how SEC Form 13F filings work, the $100M threshold, 45-day reporting lag, and how to track top hedge fund holdings.
CIK: 0001106832
Total reported value
$3.7B
$3.7B
292 檔
16.6%
At the close of Q1 2026, Castleark Management LLC disclosed equity holdings valued at approximately $3.7B, spread across 292 reported holdings.
Castleark Management LLC executed strategic sector rebalancing during Q1 2026, establishing 49 new positions while fully exiting 50 holdings and trimming 60 positions.
Showing top 200 holdings (of 292 total)
| # | Ticker | Issuer | Asset Subclass | Weight | Weight Change | Shares Change | 4Q Trend |
|---|---|---|---|---|---|---|---|
| 1 | NVDA | Nvidia CORP | Stock-Tech | 7.26% | -0.25% | -10.66% | |
| 2 | GOOGL | Alphabet Inc-cl A | Stock-Comm Services | 3.98% | +0.91% | +9.53% | |
| 3 | MSFT | Microsoft CORP | Stock-Tech | 3.23% | -0.29% | -28.52% | |
| 4 | SPIB | Ss Spdr P Int C CORP ETF | ETF-Other | 2.98% | -0.56% | +6.71% | |
| 5 | AAPL | Apple Inc | Stock-Tech | 2.94% | +0.74% | -9.57% | |
| 6 | GOVT | Ishares US Treasury Bond ETF | ETF-Gov Bonds | 2.52% | -0.48% | — | |
| 7 | LRCX | Lam Research CORP | Stock-Tech | 2.38% | +0.94% | -9.69% | |
| 8 | META | Meta Platforms Inc-class A | Stock-Comm Services | 2.35% | -0.93% | +1.27% | |
| 9 | VMBS | Vanguard Mortgage-backed Sec | ETF-Other | 2.31% | -0.43% | -12.77% | |
| 10 | LLY | Eli Lilly & Co | Stock-Healthcare | 2.24% | +0.60% | -9.93% | |
| 11 | AVGO | Broadcom Inc | Stock-Tech | 2.08% | +0.40% | -1.54% | |
| 12 | ANET | Arista Networks Inc | Stock-Tech | 1.75% | +0.42% | +4.78% | |
| 13 | AMZN | Amazon.com Inc | Stock-Consumer Disc | 1.69% | +0.03% | -47.93% | |
| 14 | GILD | Gilead Sciences Inc | Stock-Healthcare | 1.58% | +0.22% | +23.37% | |
| 15 | SCHW | Schwab (charles) CORP | Stock-Financials | 1.57% | -1.55% | -19.03% | |
| 16 | V | Visa Inc-class A Shares | Stock-Financials | 1.54% | +0.64% | -9.77% | |
| 17 | MA | Mastercard Inc - A | Stock-Financials | 1.52% | -0.25% | -10.19% | |
| 18 | SPTS | Ss Spdr P St Term Tsy ETF | ETF-Other | 1.29% | -0.25% | — | |
| 19 | SHOP | Shopify Inc - Class A | Stock-Tech | 1.22% | -0.95% | -10.07% | |
| 20 | GEV | GE Vernova Inc | Stock-Industrials | 1.20% | +0.26% | -13.10% | |
| 21 | VCLT | Vanguard Long-term CORP Bond | ETF-Corp Bonds | 1.11% | -0.20% | +89.61% | |
| 22 | NOW | Servicenow Inc | Stock-Tech | 1.05% | -0.19% | +12.33% | |
| 23 | TPR | Tapestry Inc | Stock-Consumer Disc | 0.95% | +0.10% | +43.91% | |
| 24 | FANG | Diamondback Energy Inc | Stock-Energy | 0.95% | -0.52% | — | |
| 25 | CVX | Chevron CORP | Stock-Energy | 0.93% | -0.88% | — | |
| 26 | VRT | Vertiv Holdings Co-a | Stock-Industrials | 0.93% | +0.19% | -9.92% | |
| 27 | ULTA | Ulta Beauty Inc | Stock-Consumer Disc | 0.88% | -0.88% | EXIT | |
| 28 | TLH | Ishares 10-20 Year Treasury | ETF-Gov Bonds | 0.86% | -0.16% | — | |
| 29 | ADI | Analog Devices Inc | Stock-Tech | 0.82% | +0.47% | +27.36% | |
| 30 | BKR | Baker Hughes Co | Stock-Energy | 0.78% | -0.29% | +629.45% | |
| 31 | BKNG | Booking Holdings Inc | Stock-Consumer Disc | 0.68% | -0.02% | -10.53% | |
| 32 | SNOW | Snowflake Inc | Stock-Tech | 0.68% | +0.46% | -10.02% | |
| 33 | MBB | Ishares Mbs ETF | ETF-Other | 0.64% | -0.12% | — | |
| 34 | RRC | Range Resources CORP | Stock-Energy | 0.61% | -0.40% | +454.61% | |
| 35 | AMD | Advanced Micro Devices | Stock-Tech | 0.60% | +1.26% | -15.08% | |
| 36 | CF | Cf Industries Holdings Inc | Stock-Materials | 0.55% | -0.34% | — | |
| 37 | DOCN | Digitalocean Holdings Inc | Stock-Tech | 0.52% | -0.37% | -1.48% | |
| 38 | ASND | Ascendis Pharma A/S | Stock-Other | 0.51% | -0.51% | EXIT | |
| 39 | AEIS | Advanced Energy Industries | Stock-Industrials | 0.50% | -0.34% | -5.11% | |
| 40 | JPM | Jpmorgan Chase & Co | Stock-Financials | 0.49% | -0.04% | +13.20% | |
| 41 | GH | Guardant Health Inc | Stock-Healthcare | 0.49% | -0.17% | -2.88% | |
| 42 | TSLA | Tesla Inc | Stock-Consumer Disc | 0.48% | +0.07% | +39.43% | |
| 43 | TJX | Tjx Companies Inc | Stock-Consumer Disc | 0.48% | -0.11% | — | |
| 44 | WMT | Walmart Inc | Stock-Consumer Staples | 0.47% | -0.19% | — | |
| 45 | TSM | Taiwan Semiconductor-sp Adr | Stock-Tech | 0.46% | +0.07% | +13.56% | |
| 46 | IGIB | Ishares 5-10y Inv Grade CORP | ETF-Corp Bonds | 0.46% | -0.09% | — | |
| 47 | NXT | Nextpower Inc-cl A | Stock-Tech | 0.46% | -0.40% | +8.14% | |
| 48 | PR | Permian Resources Corp-cl A | Stock-Energy | 0.45% | -0.32% | — | |
| 49 | FCFS | Firstcash Holdings Inc | Stock-Financials | 0.44% | -0.04% | +15.57% | |
| 50 | MCHP | Microchip Technology Inc | Stock-Tech | 0.44% | -0.36% | -60.26% |
| # | Ticker | Issuer | Weight Change | Shares Change | Action |
|---|---|---|---|---|---|
| 1 | BKR | Baker Hughes Co | +0.7% | +629.45% | Add |
| 2 | VCLT | Vanguard Long-term CORP Bond | +0.6% | +89.61% | Add |
| 3 | GILD | Gilead Sciences Inc | +0.6% | +23.37% | Add |
| 4 | RRC | Range Resources CORP | +0.5% | +454.61% | Add |
| 5 | LRCX | Lam Research CORP | +0.5% | -9.69% | Trim |
| 6 | SPIB | Ss Spdr P Int C CORP ETF | +0.5% | +6.71% | Add |
| 7 | TPR | Tapestry Inc | +0.4% | +43.91% | Add |
| 8 | VRT | Vertiv Holdings Co-a | +0.3% | -9.92% | Trim |
| 9 | ADI | Analog Devices Inc | +0.3% | +27.36% | Add |
| 10 | GEV | GE Vernova Inc | +0.3% | -13.10% | Trim |
| 11 | ELAN | Elanco Animal Health Inc | +0.3% | +931.44% | Add |
| 12 | DOCN | Digitalocean Holdings Inc | +0.3% | -1.48% | Trim |
| 13 | VIAV | Viavi Solutions Inc | +0.2% | +8.37% | Add |
| 14 | FAST | Fastenal Co | +0.2% | +2048.70% | Add |
| 15 | MOD | Modine Manufacturing Co | +0.2% | +216.47% | Add |
| 16 | GOOG | Alphabet Inc-cl C | +0.2% | +323.00% | Add |
| 17 | AEIS | Advanced Energy Industries | +0.2% | -5.11% | Trim |
| 18 | NXT | Nextpower Inc-cl A | +0.2% | +8.14% | Add |
| 19 | BTSG | Brightspring Health Services | +0.2% | +55.86% | Add |
| 20 | IPGP | Ipg Photonics CORP | +0.2% | +56.26% | Add |
| 21 | TLT | Ishares 20+ Year Treasury Bd | +0.2% | +45.20% | Add |
| 22 | FCFS | Firstcash Holdings Inc | +0.2% | +15.57% | Add |
| 23 | VSEC | Vse CORP | +0.1% | +53.37% | Add |
| 24 | TSM | Taiwan Semiconductor-sp Adr | +0.1% | +13.56% | Add |
| 25 | JBHT | Hunt (jb) Transprt Svcs Inc | +0.1% | +299.29% | Add |
| 26 | ESI | Element Solutions Inc | +0.1% | +3.94% | Add |
| 27 | HAS | Hasbro Inc | +0.1% | +29.90% | Add |
| 28 | ACA | Arcosa Inc | +0.1% | +53.92% | Add |
| 29 | HLIO | Helios Technologies Inc | +0.1% | +9.31% | Add |
| 30 | TSLA | Tesla Inc | +0.1% | +39.43% | Add |
| 31 | TXRH | Texas Roadhouse Inc | +0.1% | +53.83% | Add |
| 32 | TPC | Tutor Perini CORP | +0.1% | +13.91% | Add |
| 33 | WMB | Williams Cos Inc | +0.1% | +4.80% | Add |
| 34 | CAT | Caterpillar Inc | +0.1% | — | Unchanged |
| 35 | WMT | Walmart Inc | +0.1% | — | Unchanged |
| 36 | COCO | Vita Coco Co Inc/the | +0.1% | +166.99% | Add |
| 37 | LSCC | Lattice Semiconductor CORP | +0.1% | +2.94% | Add |
| 38 | STRL | Sterling Infrastructure Inc | +0.1% | -5.06% | Trim |
| 39 | OXY | Occidental Petroleum CORP | +0.1% | +127.59% | Add |
| 40 | QXO | Qxo Inc | +0.1% | +32.55% | Add |
| 41 | TRGP | Targa Resources CORP | +0.1% | +10.88% | Add |
| 42 | TOL | Toll Brothers Inc | +0.1% | +25.09% | Add |
| 43 | GH | Guardant Health Inc | — | -2.88% | Trim |
| 44 | AVGO | Broadcom Inc | 0% | -1.54% | Trim |
| 45 | ULTA | Ulta Beauty Inc | 0% | +1.38% | Add |
| 46 | SPXC | Spx Technologies Inc | 0% | -16.58% | Trim |
| 47 | META | Meta Platforms Inc-class A | 0% | +1.27% | Add |
| 48 | DY | Dycom Industries Inc | 0% | -14.83% | Trim |
| 49 | EVR | Evercore Inc - A | 0% | -5.09% | Trim |
| 50 | SEI | Solaris Energy Infrastructur | 0% | -37.58% | Trim |
According to official SEC Form 13F filings, Castleark Management LLC reported a total U.S. public equity portfolio value of $3.7B across 292 disclosed positions in Q1 2026.
Expert Analysis & Guides for Tracking Wall Street Smart Money Movements
Learn how SEC Form 13F filings work, the $100M threshold, 45-day reporting lag, and how to track top hedge fund holdings.
In terms of portfolio concentration, the top 5 core holdings (including NVDA, GOOGL, MSFT) accounted for 16.6% of total reported equity market value during Q1 2026.
Top New Position Initiated
FANG
市值: $28.7M
Top Position Liquidated / Trimmed
BX
前期市值: $37.7M
During Q1 2026, Castleark Management LLC's top holdings by market value included NVDA (7.3%)、GOOGL (4.0%)、MSFT (3.2%). The largest single position, NVDA, represented 7.3% of total portfolio value.
In Q1 2026, Castleark Management LLC made 197 total portfolio adjustments, initiating 49 new buys, adding to 38 positions, trimming 60 holdings, and fully liquidating 50 stocks.
All holding records on this page are fetched directly from the U.S. Securities and Exchange Commission (SEC) EDGAR system (Form 13F-HR). AlphaSMO parses CUSIP identifiers and formats data into Schema.org-compliant datasets.
Understand SEC Form 4 insider disclosures for corporate officers, directors, and 10% owners to track executive transactions.
Understand Rule 144 restricted stock sale notices to spot planned insider liquidations before market sell pressure arrives.
Explore the 5% beneficial ownership threshold, 13D vs 13G filing differences, and recent SEC accelerated deadline rules.
Best practices for analyzing 13F quarterly changes without getting misled by stock splits, options, or market valuation drift.
Learn how AlphaSMO's flagship signal detects high-conviction stocks where 13F hedge funds and corporate insiders buy at the same time.