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Centerbook Partners LP
David Stemerman · Hedge Fund · Long/Short Equity
CenterBook Partners LP is a systematic investment management firm founded in 2020 and headquartered in Greenwich, Connecticut. Led by David Stemerman, a former partner at Lone Pine Capital and founder of Conatus Capital, the firm reimagines the traditional multi-manager hedge fund model. The institution focuses on partnering with established, independent fund managers to capture fundamental alpha from their position and research data. This information is used to centrally construct a highly diversified, market-neutral long/short equity portfolio through a systematic framework. By bridging the gap between discretionary stock picking and quantitative execution, CenterBook aims to generate superior absolute returns for institutional and sophisticated investors while providing a platform for independent data contributors.
Simulated Performance
| Metric | Value |
|---|---|
| Total return | +26.8% |
| YTD return | +16.4% |
| Sharpe ratio | 3.95 |
| Win rate | 59% |
| AUM | $0.6B |
| Inception | Oct 1, 2025 |
| Updated | Sep 21, 2026 |
Institution Status
| Field | Value |
|---|---|
| AUM | $0.6B |
| Turnover | Low (<15%) |
| Avg holding | 18 Months |
| Inception | Oct 1, 2025 |
| Website | https://www.centerbook.com |
Current Holdings
Updated on Sep 21, 2026.
| Ticker | Name | Portfolio % | Return |
|---|---|---|---|
| AMZN | Amazon.com Inc | 8.8% | +11.8% |
| MSFT | Microsoft Corporation | 8.5% | +11.9% |
| GOOGL | Alphabet Inc Class A | 7.0% | +23.7% |
| META | Meta Platforms Inc. | 6.9% | +14.8% |
| NVDA | NVIDIA Corporation | 6.2% | +14.5% |
| V | Visa Inc. Class A | 5.9% | +6.0% |
| AAPL | Apple Inc | 5.0% | +27.0% |
| MA | Mastercard Inc | 4.8% | -0.6% |
| TSM | Taiwan Semiconductor Manufacturing | 4.7% | +41.4% |
| NFLX | Netflix Inc | 4.6% | -6.2% |
| BRK-A | Berkshire Hathaway Inc | 4.4% | +1.3% |
| LLY | Eli Lilly and Company | 4.3% | +13.0% |
| TXN | Texas Instruments Incorporated | 4.1% | -2.4% |
| BNTX | BioNTech SE | 4.1% | -13.8% |
| PLTR | Palantir Technologies Inc. | 4.0% | +4.5% |
| AVGO | Broadcom Inc | 3.9% | -13.5% |
| JPM | JPMorgan Chase & Co | 3.9% | +10.5% |
| LITE | Lumentum Holdings Inc | 3.6% | +5.5% |
| SPCX | SPAC and New Issue ETF | 2.7% | +8.1% |
| AMD | Advanced Micro Devices Inc | 2.7% | +31.0% |
Recent activity
| Date | Action | Ticker | Weight |
|---|---|---|---|
| Aug 31, 2026 | BUY | PLTR | 3.6% → 4.0% |
| Aug 31, 2026 | BUY | GOOGL | 6.7% → 7.0% |
| Aug 31, 2026 | SELL | MDB | 4.2% → 0.0% |
| Aug 31, 2026 | SELL | APH | 3.6% → 0.0% |
| Aug 31, 2026 | BUY | V | 5.5% → 5.9% |
Investment Style Analysis
Centerbook Partners LP is widely recognized for employing a Long/Short Equity strategy. As of Sep 21, 2026, the firm oversees approximately $0.6B in assets under management (AUM). The portfolio demonstrates a clear preference for the Semiconductors and Internet Content & Information sectors, reflecting a high-conviction approach to capital allocation.
Recent Market Moves
During the latest rebalancing period ending Aug 31, Centerbook Partners LP made a significant move by increasing exposure to PLTR. This adjustment aligns with the fund's dynamic approach to risk management and capital deployment in current market conditions.
Investment Philosophy
The core philosophy of CenterBook Partners is centered on 'Alpha Capture,' a strategy that extracts high-conviction signals from the research and position data of independent, process-oriented fundamental managers. Rather than employing internal analysts, the firm leverages the specialized insights of external partners, combining this discretionary research with a proprietary quantitative process and rigorous risk management. This approach allows the firm to construct a balanced portfolio that isolates pure fundamental alpha while minimizing exposure to broader market factors. The firm utilizes automated algorithms for trade execution and position sizing, aiming to optimize the contribution of fundamental research within a disciplined, systematic structure.
Disclaimer
The content provided on this page, including the simulated portfolio performance, holdings analysis, and AI-generated insights, is for informational and educational purposes only. It does not constitute financial advice, investment recommendations, or an offer to buy or sell any securities. All data is derived from historical SEC 13F filings and other public disclosures, which have a reporting lag. The "Simulated Performance" is a hypothetical reconstruction based on past disclosures and does not represent the actual returns of the institution. Past performance is not indicative of future results. Tritonix.ai is not affiliated with Centerbook Partners LP.
Similar Investment Style
Based on Long/Short Equity.
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Frequently asked questions
How is the simulated portfolio for Centerbook Partners LP constructed?
This simulation is powered by Tritonix AI using official SEC filings. We focus on the "Best Ideas" by filtering for only the Top 20 largest holdings and rebalancing them to 100%. The simulation tracks performance starting from Oct 1, 2025. Our AI monitors for updates every Monday to capture major shifts. This concentrated approach highlights the manager's true stock-picking skill and mirrors their actual investment returns.
What is Centerbook Partners LP's largest holding?
As of the latest filing, Centerbook Partners LP's top position is Amazon.com Inc (AMZN), representing 8.8% of the portfolio. This reflects a high-conviction bet by the institution.
What is Centerbook Partners LP's historical performance and risk profile?
Our simulation indicates a total return of +26.8% with a win rate of 59%. Notably, the portfolio maintains a Sharpe Ratio of 3.95, suggesting an exceptional level of risk-adjusted returns compared to the broader market.
What sectors does Centerbook Partners LP primarily invest in?
Centerbook Partners LP has a strong preference for the Semiconductors sector, which makes up 21.7% of their disclosed assets. The portfolio also has exposure to Internet Content & Information, indicating a specific thematic focus.
Is Centerbook Partners LP's portfolio concentrated or diversified?
Centerbook Partners LP runs a moderately concentrated portfolio with 20 disclosed positions. The top 3 holdings alone account for 24.3% of the total portfolio weight, suggesting a strategy that favors broader market exposure.
How has Centerbook Partners LP performed in 2026?
Our AI-simulated model portfolio for Centerbook Partners LP tracks a Year-to-Date (YTD) return of +16.4%. This metric helps investors gauge the institution's effectiveness in the current market environment.
Does David Stemerman manage Centerbook Partners LP directly?
Yes, David Stemerman serves as the key portfolio manager for Centerbook Partners LP, overseeing the investment strategy and final capital allocation decisions.