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Rush Island Management, LP
Stephen Millham · Hedge Fund · Long/Short Equity
Rush Island Management, LP is a New York-based investment management firm specializing in publicly traded real estate and related securities. Originally established in 2018 as Northwood Liquid Management, the firm rebranded in early 2022 following a management-led buyout by its founders, Stephen Millham and Raleigh Nuckols, who previously served as partners at Farallon Capital Management. The institution focuses on managing concentrated portfolios of real estate investment trusts (REITs) and other real estate-linked assets. By applying private equity-style underwriting and intensive fundamental research to the public markets, the firm seeks to capitalize on valuation disparities. Rush Island primarily serves institutional investors and manages private funds through a disciplined, high-conviction approach to the real estate sector.
Simulated Performance
| Metric | Value |
|---|---|
| Total return | +3.4% |
| YTD return | +3.2% |
| Sharpe ratio | 2.53 |
| Win rate | 46% |
| AUM | $1.4B |
| Inception | Oct 1, 2025 |
| Updated | Sep 21, 2026 |
Institution Status
| Field | Value |
|---|---|
| AUM | $1.4B |
| Turnover | Low (<15%) |
| Avg holding | 18 Months |
| Inception | Oct 1, 2025 |
| Website | http://www.rushisland.com |
Current Holdings
Updated on Sep 21, 2026.
| Ticker | Name | Portfolio % | Return |
|---|---|---|---|
| INVH | Invitation Homes Inc | 9.4% | -7.2% |
| ESS | Essex Property Trust Inc | 8.7% | +1.6% |
| NNN | National Retail Properties Inc | 7.9% | -2.5% |
| KRC | Kilroy Realty Corp | 7.6% | -9.1% |
| VTR | Ventas Inc | 7.2% | +24.5% |
| HR | Healthcare Realty Trust Incorporated | 7.0% | +0.6% |
| SBRA | Sabra Healthcare REIT Inc | 6.1% | -3.0% |
| SBAC | SBA Communications Corp | 6.0% | -8.1% |
| FR | First Industrial Realty Trust Inc | 5.6% | +20.0% |
| BXDC | Blackstone Digital Infrastructure Trust Inc. | 5.1% | -3.2% |
| AMT | American Tower Corp | 5.0% | -0.5% |
| ADC | Agree Realty Corporation | 4.5% | -9.2% |
| DOC | Healthpeak Properties Inc | 4.4% | -1.5% |
| EPRT | Essential Properties Realty Trust Inc | 3.5% | -13.4% |
| MAC | Macerich Company | 3.5% | -5.4% |
| NHP | National Healthcare Properties, Inc. | 2.9% | +0.5% |
| IRT | Independence Realty Trust Inc | 2.7% | -12.7% |
| VICI | VICI Properties Inc | 1.3% | -7.0% |
| SITC | Site Centers Corp | 0.9% | -50.6% |
| POOL | Pool Corporation | 0.6% | -10.8% |
Recent activity
| Date | Action | Ticker | Weight |
|---|---|---|---|
| Aug 31, 2026 | SELL | CURB | 1.1% → 0.0% |
| Aug 31, 2026 | BUY | MAC | 0.0% → 3.5% |
| Aug 31, 2026 | SELL | SBAC | 11.9% → 6.0% |
| Aug 31, 2026 | BUY | SITC | 1.4% → 0.9% |
| Aug 31, 2026 | BUY | ADC | 3.1% → 4.5% |
Investment Style Analysis
Rush Island Management, LP is widely recognized for employing a Long/Short Equity strategy. As of Sep 21, 2026, the firm oversees approximately $1.4B in assets under management (AUM). The portfolio demonstrates a clear preference for the REIT - Healthcare Facilities and REIT - Residential sectors, reflecting a high-conviction approach to capital allocation.
Recent Market Moves
During the latest rebalancing period ending Aug 31, Rush Island Management, LP made a significant move by reducing the position in CURB. This adjustment aligns with the fund's dynamic approach to risk management and capital deployment in current market conditions.
Investment Philosophy
The firm employs a fundamental, bottom-up investment philosophy aimed at identifying undervalued and overvalued opportunities within the public real estate market. Rush Island Management utilizes a concentrated portfolio strategy, focusing on a limited number of high-conviction positions where they believe significant valuation gaps exist between public securities and their underlying private market values. Their approach combines deep sector expertise with opportunistic capital deployment, often taking both long and short positions to manage risk and extract alpha. By leveraging their extensive background in real estate private equity, the founders aim to bring a rigorous, asset-level underwriting discipline to liquid public markets, ensuring that every investment is backed by intensive qualitative and quantitative analysis.
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 Rush Island Management, LP.
Similar Investment Style
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Frequently asked questions
How is the simulated portfolio for Rush Island Management, 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 Rush Island Management, LP's largest holding?
As of the latest filing, Rush Island Management, LP's top position is Invitation Homes Inc (INVH), representing 9.4% of the portfolio. This reflects a high-conviction bet by the institution.
What is Rush Island Management, LP's historical performance and risk profile?
Our simulation indicates a total return of +3.4% with a win rate of 46%. Notably, the portfolio maintains a Sharpe Ratio of 2.53, suggesting an excellent level of risk-adjusted returns compared to the broader market.
What sectors does Rush Island Management, LP primarily invest in?
Rush Island Management, LP has a strong preference for the REIT - Healthcare Facilities sector, which makes up 27.7% of their disclosed assets. The portfolio also has exposure to REIT - Residential, indicating a specific thematic focus.
Is Rush Island Management, LP's portfolio concentrated or diversified?
Rush Island Management, LP runs a moderately concentrated portfolio with 20 disclosed positions. The top 3 holdings alone account for 26.0% of the total portfolio weight, suggesting a strategy that favors broader market exposure.
How has Rush Island Management, LP performed in 2026?
Our AI-simulated model portfolio for Rush Island Management, LP tracks a Year-to-Date (YTD) return of +3.2%. This metric helps investors gauge the institution's effectiveness in the current market environment.
Does Stephen Millham manage Rush Island Management, LP directly?
Yes, Stephen Millham serves as the key portfolio manager for Rush Island Management, LP, overseeing the investment strategy and final capital allocation decisions.