RK Capital Management, LLC/FL 13F: Portfolio & Holdings
In its most recent SEC Form 13F-HR filing (as of Q1 2026), RK Capital Management, LLC/FL (SEC CIK 0001905218) reported 23 equity positions, plus $2.6 billion of listed option notional (51.3% calls / 48.7% puts). The Weston-based hedge fund maintains a highly concentrated portfolio.
Its largest holdings are Sprott Asset Management LP (PSLV) at 28.6%, Ishares Tr (IWM) at 17.5%, and State Str Spdr S&p 500 ETF T (SPY) at 15.3%.
The largest exit was Nvidia Corporation Com (NVDA) . See the fund’s full Q1 2026 buys, sells, and portfolio changes →
Based on published SEC 13F filings, RK Capital Management's closest peer funds by portfolio overlap are Trustees of Columbia University in the City of New York (100.0%), Hershey Trust CO (96.6%), and Passaic Partners LLC (38.3%).
- 13F AUM
- $0.0B
- Equity Positions
- 23
- Top-10 Concentration
- 91.1%
- Largest Sector · 70.5%
- Unknown
- Longest-Held Position · 6 qtrs
- SYN_000000000
- Median Holding Period
- 1 Qtrs
What are RK Capital Management’s largest 13F holdings as of Q1 2026?
Largest 13F positions disclosed by RK Capital Management, ranked by portfolio weight. Full multi-quarter history and the broader institutional holder base for each ticker linked per row.
| # | Issuer | Ticker | Sector | Weight | Position Value | Detail |
|---|---|---|---|---|---|---|
| 1 | SPROTT ASSET MANAGEMENT LP NEW | PSLV | Unknown | 28.6% | $12.4M | Position History All Holders |
| 2 | ISHARES TR NEW | IWM | Unknown | 17.5% | $7.6M | Position History All Holders |
| 3 | STATE STR SPDR S&P 500 ETF T | SPY | Unknown | 15.3% | $6.7M | Position History All Holders |
| 4 | ARMADA ACQUISITION CORP III NEW | AACI | Financial Services | 12.2% | $5.3M | Position History All Holders |
| 5 | INNOVATOR ETFS TRUST | UNOV | Unknown | 5.7% | $2.5M | Position History All Holders |
| 6 | ELECTRONIC ARTS INC NEW | EA | Communication Services | 3.4% | $1.5M | Position History All Holders |
| 7 | ARCELLX INC NEW | ACLX | Healthcare | 3.1% | $1.4M | Position History All Holders |
| 8 | CITIGROUP INC NEW | C | Financial Services | 2.0% | $873.3K | Position History All Holders |
| 9 | PROCAP FINL INC | BRR | Financial Services | 1.7% | $738.2K | Position History All Holders |
| 10 | INTERNATIONAL BUSINESS MACHS NEW | IBM | Technology | 1.6% | $678.7K | Position History All Holders |
View RK Capital Management's Q1 2026 portfolio changes and trading report →
Portfolio composition
Sectors, concentrations, and a tap-through treemap of every position in the fund's latest 13F.
Holding period analytics
Distribution of holding periods for all 49 stocks the fund has ever held (up to selected quarter):
Which Funds Hold a Similar Portfolio to RK Capital Management?
Ranked by percentage of the peer fund's 13F equity portfolio that overlaps with RK Capital Management's positions in Q1 2026.
| # | Fund | Shared Positions | Overlap % |
|---|---|---|---|
| 1 | Trustees of Columbia University in the City of New York | 1 | 100.0% |
| 2 | Hershey Trust CO | 1 | 96.6% |
| 3 | Passaic Partners LLC | 1 | 38.3% |
| 4 | Naman Capital Ltda | 1 | 33.0% |
| 5 | Riposte Capital LLC | 3 | 24.3% |
| 6 | Pentwater Capital Management LP | 4 | 23.6% |
| 7 | Kahn Brothers Group INC | 2 | 17.0% |
| 8 | JANA Partners Management, LP | 1 | 13.9% |
| 9 | Paradigm Biocapital Advisors LP | 1 | 13.5% |
| 10 | Patient Capital Management, LLC | 3 | 10.4% |
How Has RK Capital Management's AUM Changed Over Time?
Quarterly 13F-reported AUM for RK Capital Management, derived from aggregate reported position market values disclosed to the U.S. SEC.
| Quarter | 13F AUM (USD) | QoQ Change |
|---|---|---|
| Q2 2025 | $82M | — |
| Q3 2025 | $65M | -0.0B |
| Q4 2025 | $1.6B | +1.5B |
| Q1 2026 | $44M | -1.6B |
Methodology & FAQ
How We Track RK Capital Management Holdings
Our data is systematically aggregated directly from quarterly Form 13F-HR disclosures submitted to the U.S. Securities and Exchange Commission (SEC).
- Who Must File (Reporting Threshold): This dataset includes filings from U.S. institutional investment managers, hedge funds, mutual funds, university endowments, and family offices managing at least $100 million in Section 13(f) securities (including equities, options, convertibles, ETFs, and warrants).
- What is Included (Data Scope): By regulation, 13F filings include long positions in U.S. exchange-listed stocks, ETFs, shares of closed-end investment companies, and convertible debt, as defined in the SEC's official Section 13(f) securities list . For listed options (calls/puts) the reported value is based on the notional value.
- Portfolio Weight Explained (Metric Definition): “Portfolio Weight” shows how much of a fund's total reported 13F portfolio value (excluding listed options) is allocated to a specific position on the reporting date.
- How to Use This Data (Interpretation): Quarter-over-quarter changes in shares and portfolio weight reflect a combination of active trading and market price movements. These are descriptive metrics of fund allocation, not explicit buy or sell signals.
What does RK Capital Management's 13F filing disclose about their portfolio?
A Form 13F-HR filed by RK Capital Management with the U.S. SEC discloses all long positions in Section 13(f) securities — U.S.-listed equities, ETFs, closed-end funds, and listed put/call options — held at quarter-end with a market value of at least $200,000 or 10,000 or more shares. Pactolio aggregates these filings to surface the manager’s reported portfolio weights, share counts, and quarter-over-quarter portfolio changes in a structured format. The filing represents a point-in-time snapshot of disclosed long-side exposure, not a real-time or complete view of the fund’s total book.
How do you measure conviction in RK Capital Management's portfolio allocations?
Conviction is measured by portfolio weight — the percentage of RK Capital Management’s total reported 13F market value allocated to a given position — rather than by absolute share count or dollar value alone. A position representing a disproportionately large share of the fund’s disclosed book signals high-conviction allocation, regardless of whether it ranks among the fund’s largest absolute holdings.
What is excluded from RK Capital Management's 13F — short positions, swaps, and derivatives?
SEC Form 13F requires disclosure of long positions only. Specifically excluded are: short interest, total return swaps, credit default swaps, and all OTC derivatives — none of which appear in 13F filings regardless of position size. Listed put and call options must be disclosed but are excluded from portfolio weight calculations on this platform so that reported weights reflect direct equity exposure and remain comparable across filers. This means RK Capital Management’s 13F represents the reported long book, which may differ materially from its net economic exposure.
When is RK Capital Management's 13F data available, and how large is the reporting lag?
Investment managers must submit Form 13F within 45 calendar days of each quarter-end (the T+45 deadline). Pactolio ingests filings directly from SEC EDGAR as they are published — managers who file early appear in our system before the deadline, while late filers are captured on their actual filing date. The quarter label shown at the top of this page reflects the most recently processed 13F cycle for RK Capital Management. The inherent reporting lag means the data always reflects positions as of the prior quarter-end, not current holdings.
Who must file a Form 13F with the SEC, and does RK Capital Management qualify?
Under SEC Rule 13f-1, any investment manager — including hedge funds, family offices, registered investment advisers, pension funds, and university endowments — that exercises investment discretion over $100 million or more in Section 13(f) securities at any point during a calendar year must file Form 13F for that year. RK Capital Management meets this threshold, which is why its holdings are publicly disclosed and accessible on this platform. The $100 million threshold is evaluated on a rolling basis, meaning new filers can enter and existing filers can exit the disclosure regime as AUM crosses that boundary.