Hedge Fund

RTW INVESTMENTS, LP

New York, NY SEC Registered Investment Advisor Institutional CIK: 0001493215
13F Score ?
4
3Y · Top 10 · Mgr Wt
13F Score ?
4
7Y · Top 10 · Mgr Wt
S&P 500 ?
80
Benchmark
$10.05B
AUM
-0.68%
2026 Q1
+29.45%
1-Year Return
+49.99%
Top 10 Concentration
+17.80%
Turnover
+0.67%
AUM Change
Since 2014
First Filing
88
# of Holdings

Fund Overview

13F Filed: 2026-05-15

As of 2026 Q1, Rtw Investments, Lp manages $10.05B in reported 13F assets , holds 88 positions with +49.99% top-10 concentration , and delivered a 1-year return of +29.45% on its disclosed equity portfolio. Filing 13F reports since 2014.

About

Investment Strategy

Analytics Summary

Risk Profile

Key Personnel

Roderick Wong — Founder, Managing Partner & Chief Investment Officer
Stephanie Sirota — Partner & Chief Business Officer
Michael Davin — Partner & General Counsel
Official 13F Filings — SEC EDGAR Key personnel and Fund Overview may contain mistakes

Activity Summary — 2026 Q1

Q1 2026 13F Filed: May 15, 2026

Top Buys

% $
Stock % Impact
+3.87%
+2.91%
+2.64%
+2.60%
+0.91%
+0.73%

Top Sells

% $
Stock % Impact
Sold All 😨 Was: 2.70% -2.68%
Sold All 😨 Was: 1.62% -1.61%
-1.17%
-0.93%
Sold All 😨 Was: 0.92% -0.92%
Sold All 😨 Was: 0.89% -0.88%

Top Holdings

2026 Q1
Stock %
10.38%
7.88%
5.31%
5.25%
5.16%
4.70%
View All Holdings

Activity Summary

Latest
Market Value $10.05B
AUM Change +0.67%
New Positions 8
Increased Positions 30
Closed Positions 11
Top 10 Concentration +49.99%
Portfolio Turnover +17.80%
Alt Turnover +18.13%

Sector Allocation Trends

Quarterly History
Free View: Last 10 Quarters. Subscribe to see full history

Holdings Analysis

Size: % of Portfolio Color: Last Full-Quarter Return No data
Free: 10 quarters

Positions Dynamics

Visualizing Top 20 holdings weight history over the last 10 quarters.

Portfolio Analytics — Latest

RTW INVESTMENTS, LP risk dashboard covering volatility, beta, value-at-risk, drawdowns, concentration, factor tilts, benchmark comparison, and stress testing for the latest disclosed portfolio.

Risk access
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Real-time Analytics
High-Conviction Alpha
AAPL 92.4
NVDA 88.1
MSFT 74.3
Strategy Guardian
Style Drift 0.12
Sector Rotation 0.38

Tracking institutional benchmark deviation

Scenario Lab
2008 GFC -32.4%
Covid-19 -18.1%
2022 Bear -24.7%
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Best Strategy vs. Benchmarks

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Std Deviation
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Max Drawdown
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Beta vs SPY
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Win Rate
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Edge Metrics Last 10 quarters only
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Alpha annualized
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Down Capture

Strategy Backtester: RTW INVESTMENTS, LP

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Find the best N! Test multiple portfolio sizes at once to discover the optimal configuration.

Risk insights! Identify periods when the fund lagged the benchmark – critical for timing entries.

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Underperformance Analysis — Top 10 Holdings vs SPY

Backtesting RTW INVESTMENTS, LP's top 10 holdings against SPY identified 36 underperformance periods. Worst drawdown: 2021-09 – 2022-04 (-38.2% vs SPY, 8 quarters). Currently underperforming.

Avg. lag: -11.9% vs SPY Avg. duration: 2.1 quarters
Backtest Snapshot — Top 10 Holdings (Mn-Weighted)

The ticker-level breakdown shows how each of RTW INVESTMENTS, LP's top holdings contributed to portfolio returns quarter by quarter. Strongest recent contributors inside the last 5 years of the quarterly Top 10 backtest window: MDGL (2024 Q2 – 2025 Q4, +16.8 pts), PTCT (2021 Q2 – 2025 Q4, +10.9 pts), AXSM (2022 Q4 – 2025 Q1, +9.5 pts), ARGX (2022 Q2 – 2025 Q4, +8.8 pts), PTGX (2021 Q2 – 2025 Q4, +8.2 pts) .

Strategy ann.: 4.6% SPY ann.: 14.1% Period: 2015–2026
Best Recent Contributors — Last 5Y
All 5 recent top contributors beat SPY, which means this fund's strongest recent return drivers also outperformed the index over the same window.
2024 Q2 – 2025 Q4 • 7Q in Top 10 Beat SPY
MDGL
+122%
SPY
+39%
Contrib
+16.8%
2021 Q2 – 2025 Q4 • 19Q in Top 10 Beat SPY
PTCT
+82%
SPY
+77%
Contrib
+10.9%
2022 Q4 – 2025 Q1 • 10Q in Top 10 Beat SPY
AXSM
+72%
SPY
+62%
Contrib
+9.5%
2022 Q2 – 2025 Q4 • 14Q in Top 10 Beat SPY
ARGX
+122%
SPY
+80%
Contrib
+8.8%
2021 Q2 – 2025 Q4 • 7Q in Top 10 Beat SPY
PTGX
+92%
SPY
+33%
Contrib
+8.2%
Stock return (green = beat SPY)   Stock return (red = lagged SPY)   SPY same period   Cumulative contribution during the last 5 years of the quarterly Mn-weighted Top 10 strategy

Frequently Asked Questions

What does Rtw Investments, Lp invest in?
RTW Investments employs a healthcare sector-specialist investment strategy integrating fundamental scientific analysis, regulatory pathway assessment, and event-driven catalyst identification. The firm's approach leverages Roderick Wong's medical expertise and a team of analysts with scientific backgrounds to evaluate clinical trial data, drug mechanisms, competitive positioning, and commercial potential with depth exceeding typical healthcare-generalist analysis. The **13F Portfolio Composition** reveals concentrated positioning across the healthcare ecosystem, with significant allocations to biotechnology companies developing novel therapeutics, pharmaceutical firms with diversified pipelines, and medical device companies addressing unmet clinical needs. This exclusive sector focus distinguishes RTW from diversified hedge funds maintaining healthcare sleeves, enabling deeper expertise and more differentiated insights within the chosen domain. The firm's investment process emphasizes catalyst identification—FDA approval decisions, clinical trial readouts, regulatory milestones, and M&A potential—that may crystallize value within defined timeframes. This event-driven orientation influences position sizing and portfolio turnover, with the firm scaling positions around anticipated catalysts and adjusting exposures based on clinical or regulatory outcomes. The **Sector Allocation History** across reporting periods demonstrates how positioning shifts across biotechnology subsectors, pharmaceutical platforms, and medical device opportunities as the healthcare opportunity set evolves. RTW maintains active involvement in healthcare capital formation, frequently participating in PIPEs, private placements, and structured transactions that provide companies development capital while offering the firm attractive entry points and structured economics. This capital provision role extends the firm's influence beyond passive equity holding into active partnership with healthcare companies. Portfolio turnover trends moderate to high, reflecting the event-driven nature of healthcare investing where clinical trial outcomes and regulatory decisions require decisive position management.
What is Rtw Investments, Lp's AUM?
Rtw Investments, Lp reported $10.05B in 13F assets as of 2026 Q1. Note: 13F AUM reflects only long equity positions reported to the SEC and may differ from total assets under management.
How concentrated is Rtw Investments, Lp's portfolio?
Rtw Investments, Lp holds 88 disclosed positions. The top 10 holdings represent +49.99% of the reported portfolio, indicating a diversified investment approach.
How to track Rtw Investments, Lp 13F filings?
Track Rtw Investments, Lp's quarterly filings on SEC EDGAR or on this page — data is updated within days of each filing deadline. Subscribe to 13Foresight for position-change alerts.
Who manages Rtw Investments, Lp?
Rtw Investments, Lp is managed by Roderick Wong (Founder, Managing Partner & Chief Investment Officer), Stephanie Sirota (Partner & Chief Business Officer), Michael Davin (Partner & General Counsel).

Disclaimer: 13Foresight is not a registered investment adviser, broker-dealer, or financial planner. All information on this site is provided solely for informational and educational purposes and does not constitute investment advice, a solicitation, or a recommendation to buy or sell any security. Portfolio backtests shown on this page are hypothetical and simulated — they do not represent actual trading results and were constructed with the benefit of hindsight. Actual results would differ materially. 13F filings disclose only long equity positions valued above $10,000, submitted up to 45 days after quarter-end; they do not capture short positions, options, bonds, cash, private investments, or non-U.S. securities. A fund's backtest performance may not reflect its actual returns, as managers frequently generate alpha through strategies not visible in 13F data. Past performance is not indicative of future results. All data sourced from public SEC EDGAR filings. Use at your own risk. Full Terms of Use.

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