ABRAMS BISON INVESTMENTS, LLC 13F: Portfolio & Holdings
In its most recent SEC Form 13F-HR filing (as of Q1 2026), ABRAMS BISON INVESTMENTS, LLC (SEC CIK 0001317588) reported 11 positions with a combined market value of $2.3 billion. The Bethesda-based hedge fund maintains a highly concentrated portfolio. Its largest sector is Industrials at 35.4% of exposure.
Its largest holdings are Sunbelt Rentals Holdings INC (SUNB) at 35.4%, Td Synnex Corporation (SNX) at 18.2%, and Applied Matls INC (AMAT) at 10.4%.
The largest new position was Sunbelt Rentals Holdings INC (SUNB) at 35.4% of the portfolio. See the fund’s full Q1 2026 buys, sells, and portfolio changes →
Based on published SEC 13F filings, ABRAMS BISON INVESTMENTS's closest peer funds by portfolio overlap are Khrom Capital Management LLC (34.1%), Brave Warrior Advisors, LLC (17.3%), and Blue Grotto Capital, LLC (14.1%).
- 13F AUM
- $2.3B
- Equity Positions
- 11
- Top-10 Concentration
- 99.8%
- Largest Sector · 35.4%
- Industrials
- Longest-Held Position · 32 qtrs
- CACC
- Median Holding Period
- 6 Qtrs
What are ABRAMS BISON INVESTMENTS’s largest 13F holdings as of Q1 2026?
Largest 13F positions disclosed by ABRAMS BISON INVESTMENTS, 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 | SUNBELT RENTALS HOLDINGS INC NEW | SUNB | Industrials | 35.4% | $817.6M | Position History All Holders |
| 2 | TD SYNNEX CORPORATION | SNX | Technology | 18.2% | $420.5M | Position History All Holders |
| 3 | APPLIED MATLS INC | AMAT | Technology | 10.4% | $240.6M | Position History All Holders |
| 4 | SHARKNINJA INC | SN | Consumer Cyclical | 6.6% | $152.1M | Position History All Holders |
| 5 | URBAN OUTFITTERS INC | URBN | Consumer Cyclical | 6.1% | $141.0M | Position History All Holders |
| 6 | TELEFLEX INCORPORATED | TFX | Healthcare | 5.2% | $119.6M | Position History All Holders |
| 7 | NEW YORK TIMES CO MTN BE | NYT | Communication Services | 5.1% | $118.6M | Position History All Holders |
| 8 | BRIGHT HORIZONS FAM SOL IN D NEW | BFAM | Consumer Cyclical | 5.0% | $116.0M | Position History All Holders |
| 9 | ACADIA HEALTHCARE COMPANY IN | ACHC | Healthcare | 4.4% | $102.4M | Position History All Holders |
| 10 | CAPITAL ONE FINL CORP | COF | Financial Services | 3.4% | $77.5M | Position History All Holders |
View ABRAMS BISON INVESTMENTS'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 39 stocks the fund has ever held (up to selected quarter):
Which Funds Hold a Similar Portfolio to ABRAMS BISON INVESTMENTS?
Ranked by percentage of the peer fund's 13F equity portfolio that overlaps with ABRAMS BISON INVESTMENTS's positions in Q1 2026.
| # | Fund | Shared Positions | Overlap % |
|---|---|---|---|
| 1 | Khrom Capital Management LLC | 3 | 34.1% |
| 2 | Brave Warrior Advisors, LLC | 4 | 17.3% |
| 3 | Blue Grotto Capital, LLC | 2 | 14.1% |
| 4 | Linonia Partnership LP | 1 | 14.1% |
| 5 | Ruane, Cunniff & Goldfarb L.P. | 2 | 12.0% |
| 6 | Dorsey Asset Management, LLC | 1 | 11.4% |
| 7 | Greenvale Capital LLP | 1 | 11.0% |
| 8 | Parsifal Capital Management, LP | 1 | 10.8% |
| 9 | Alua Capital Management LP | 1 | 10.7% |
| 10 | Tyro Capital Management LLC | 1 | 10.2% |
How Has ABRAMS BISON INVESTMENTS's AUM Changed Over Time?
Quarterly 13F-reported AUM for ABRAMS BISON INVESTMENTS, derived from aggregate reported position market values disclosed to the U.S. SEC.
| Quarter | 13F AUM (USD) | QoQ Change |
|---|---|---|
| Q2 2016 | $1.1B | — |
| Q3 2016 | $918M | -0.2B |
| Q4 2016 | $972M | +0.1B |
| Q1 2017 | $600M | -0.4B |
| Q2 2017 | $573M | -0.0B |
| Q3 2017 | $600M | +0.0B |
| Q4 2017 | $569M | -0.0B |
| Q1 2018 | $639M | +0.1B |
| Q2 2018 | $728M | +0.1B |
| Q3 2018 | $791M | +0.1B |
| Q4 2018 | $850M | +0.1B |
| Q1 2019 | $899M | +0.0B |
| Q2 2019 | $965M | +0.1B |
| Q3 2019 | $1.0B | +0.0B |
| Q4 2019 | $690M | -0.3B |
| Q1 2020 | $342M | -0.3B |
| Q2 2020 | $642M | +0.3B |
| Q3 2020 | $800M | +0.2B |
| Q4 2020 | $886M | +0.1B |
| Q1 2021 | $1.1B | +0.2B |
| Q2 2021 | $1.2B | +0.0B |
| Q3 2021 | $1.3B | +0.2B |
| Q4 2021 | $1.3B | -0.0B |
| Q1 2022 | $1.2B | -0.2B |
| Q2 2022 | $884M | -0.3B |
| Q3 2022 | $926M | +0.0B |
| Q4 2022 | $938M | +0.0B |
| Q1 2023 | $1.0B | +0.1B |
| Q2 2023 | $997M | -0.0B |
| Q3 2023 | $910M | -0.1B |
| Q4 2023 | $998M | +0.1B |
| Q1 2024 | $1.1B | +0.1B |
| Q2 2024 | $1.0B | -0.1B |
| Q3 2024 | $1.2B | +0.1B |
| Q4 2024 | $971M | -0.2B |
| Q1 2025 | $918M | -0.1B |
| Q2 2025 | $1.1B | +0.2B |
| Q3 2025 | $1.3B | +0.2B |
| Q4 2025 | $1.3B | +0.1B |
| Q1 2026 | $2.3B | +1.0B |
Methodology & FAQ
How We Track ABRAMS BISON INVESTMENTS 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 ABRAMS BISON INVESTMENTS's 13F filing disclose about their portfolio?
A Form 13F-HR filed by ABRAMS BISON INVESTMENTS 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 ABRAMS BISON INVESTMENTS's portfolio allocations?
Conviction is measured by portfolio weight — the percentage of ABRAMS BISON INVESTMENTS’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 ABRAMS BISON INVESTMENTS'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 ABRAMS BISON INVESTMENTS’s 13F represents the reported long book, which may differ materially from its net economic exposure.
When is ABRAMS BISON INVESTMENTS'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 ABRAMS BISON INVESTMENTS. 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 ABRAMS BISON INVESTMENTS 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. ABRAMS BISON INVESTMENTS 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.