Hedge Fund / Asset Manager

DAFNA Capital Management LLC

Los Angeles, CA SEC Registered Investment Advisor Institutional CIK: 0001389933
13F Score ?
12
3Y · Top 10 · Mgr Wt
13F Score ?
13
7Y · Top 10 · Mgr Wt
S&P 500 ?
80
Benchmark
$440M
AUM
+0.00%
2026 Q1
+51.56%
1-Year Return
+52.42%
Top 10 Concentration
+13.66%
Turnover
+2.11%
AUM Change
Since 2006
First Filing
83
# of Holdings

Fund Overview

13F Filed: 2026-05-15

As of 2026 Q1, Dafna Capital Management Llc manages $440M in reported 13F assets , holds 83 positions with +52.42% top-10 concentration , and delivered a 1-year return of +51.56% on its disclosed equity portfolio. Filing 13F reports since 2006.

About

Investment Strategy

Analytics Summary

Risk Profile

Key Personnel

Nathan Fischel — Co-Founder / Co-Portfolio Manager
Fariba Ghodsian — Co-Founder / Co-Portfolio Manager
David Fischel — Portfolio Manager / Analyst
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
+2.65%
+1.98%
+1.89%
+1.77%
+1.26%
+0.91%

Top Sells

% $
Stock % Impact
-2.10%
-1.67%
-1.50%
-1.43%
Sold All 😨 Was: 0.93% -0.91%
-0.83%

Top Holdings

2026 Q1
Stock %
12.85%
9.25%
5.73%
4.77%
3.88%
3.61%
View All Holdings

Activity Summary

Latest
Market Value $440M
AUM Change +2.11%
New Positions 10
Increased Positions 20
Closed Positions 4
Top 10 Concentration +52.42%
Portfolio Turnover +13.66%
Alt Turnover +14.69%

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

DAFNA Capital Management LLC risk dashboard covering volatility, beta, value-at-risk, drawdowns, concentration, factor tilts, benchmark comparison, and stress testing for the latest disclosed portfolio.

Risk access
Building institutional risk profile...
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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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Real conviction scores for every holding  ·  Strategy Guardian alerts  ·  Live Scenario Lab stress tests
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Best Strategy vs. Benchmarks

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Returns
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1-Year Return
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Ann. Return
Risk
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Std Deviation
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Max Drawdown
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Beta vs SPY
Quality
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Sharpe
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Win Rate
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Payoff Ratio
Edge Metrics Last 10 quarters only
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Alpha annualized
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Up Capture
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Down Capture

Strategy Backtester: DAFNA Capital Management LLC

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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 DAFNA Capital Management LLC's top 10 holdings against SPY identified 57 underperformance periods. Worst drawdown: 2020-07 – 2020-11 (-33.6% vs SPY, 5 quarters).

Avg. lag: -10.1% vs SPY Avg. duration: 2.0 quarters
Backtest Snapshot — Top 10 Holdings (Mn-Weighted)

The ticker-level breakdown shows how each of DAFNA Capital Management LLC'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: RVMD (2022 Q3 – 2025 Q4, +31.6 pts), MRUS (2021 Q4 – 2025 Q2, +15.3 pts), XBI (2022 Q1 – 2025 Q4, +13.0 pts), CYTK (2021 Q3 – 2025 Q4, +9.5 pts), XENE (2021 Q2 – 2025 Q4, +7.8 pts) .

Strategy ann.: 11.1% SPY ann.: 10.8% Period: 2007–2026
Best Recent Contributors — Last 5Y
1 of 5 recent top contributors lagged SPY, which means even some of this fund's best return drivers still failed to beat a simple index over the same window.
2022 Q3 – 2025 Q4 • 14Q in Top 10 Beat SPY
RVMD
+569%
SPY
+97%
Contrib
+31.6%
2021 Q4 – 2025 Q2 • 10Q in Top 10 Beat SPY
MRUS
+159%
SPY
+41%
Contrib
+15.3%
2022 Q1 – 2025 Q4 • 16Q in Top 10 Lagged SPY
XBI
+92%
SPY
+96%
Contrib
+13.0%
2021 Q3 – 2025 Q4 • 15Q in Top 10 Beat SPY
CYTK
+85%
SPY
+75%
Contrib
+9.5%
2021 Q2 – 2025 Q4 • 13Q in Top 10 Beat SPY
XENE
+240%
SPY
+52%
Contrib
+7.8%
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 Dafna Capital Management Llc invest in?
FIRM OVERVIEW DAFNA Capital Management LLC is a Los Angeles-based investment management firm specializing in healthcare, biotechnology, and life sciences investing. Founded by Nathan Fischel and Fariba Ghodsian, the firm has established itself as a dedicated sector specialist with deep expertise in the complex and research-intensive healthcare investment landscape. DAFNA operates multiple investment vehicles focused on life sciences opportunities, leveraging its founders' combined background in medicine, science, and finance to identify promising companies across the biotechnology spectrum. As an SEC-registered advisor filing 13F reports under CIK #0001389933, the firm has accumulated an extensive track record spanning over 15 years of regulatory filings, providing substantial historical data for portfolio analysis. The firm's name, DAFNA, carries personal significance while representing its focused mission in healthcare investing. Users can access the platform's 13F history tools to examine the evolution of DAFNA's disclosed equity positions across multiple market cycles, including critical periods for biotech such as the 2015-2016 sector correction and the COVID-era healthcare rally. DAFNA CAPITAL MANAGEMENT LLC INVESTMENT STRATEGY DAFNA Capital Management employs a highly specialized investment strategy concentrated in healthcare, biotechnology, and life sciences sectors. The firm's approach combines fundamental research with deep scientific understanding, evaluating companies based on pipeline potential, clinical trial outcomes, regulatory pathways, and commercial viability. This sector-specialist methodology positions DAFNA to identify opportunities that generalist managers may overlook, while accepting the concentrated risk inherent in biotech-focused investing. Observable patterns from 13F filings reveal a portfolio heavily weighted toward biotechnology and pharmaceutical companies across market capitalizations—from large-cap established pharmaceutical firms to small-cap development-stage biotech companies with binary clinical outcomes. The investment style is growth-oriented, seeking companies with significant upside potential from drug approvals, breakthrough therapies, or acquisition by larger pharmaceutical entities. Portfolio turnover tends to be moderate to high, reflecting the event-driven nature of biotech investing where clinical trial readouts and FDA decisions can dramatically alter position attractiveness. The **Sector Allocation History** accessible through the platform reveals DAFNA's positioning within healthcare subsectors over time, while **Top 10 Holdings Concentration** metrics illuminate conviction levels in highest-weighted positions. RISK PROFILE The risk characteristics of DAFNA Capital Management are distinctive and reflect its concentrated sector focus in healthcare and biotechnology. Biotech-focused portfolios typically exhibit elevated volatility relative to diversified equity strategies, driven by binary clinical trial outcomes, regulatory decisions, and pipeline-dependent valuations. Individual position risk can be substantial, as development-stage biotechnology companies may experience dramatic price swings based on single events. However, DAFNA's experienced leadership team and long operational history suggest sophisticated risk management within this challenging sector. The firm's longevity through multiple biotech market cycles—including the 2015-2016 sector drawdown, the 2018 healthcare volatility, and the COVID-19 pandemic period—demonstrates institutional resilience. Analyzing the **Max Drawdown Depth** through historical backtesting is particularly relevant for a sector-concentrated strategy, quantifying peak-to-trough capital decline during biotech-specific stress periods. The **Downside Capture Ratio** relative to healthcare benchmarks (rather than broad market indices) offers a more appropriate lens on DAFNA's risk-adjusted behavior within its specialized domain. The **Volatility Profile** provides context on return consistency, though elevated volatility is an expected characteristic of biotech investing rather than a structural concern. ANALYTICS SUMMARY DAFNA Capital Management LLC represents a distinguished healthcare and biotechnology sector specialist with deep roots in Los Angeles's investment community. Under the leadership of co-founders Nathan Fischel and Fariba Ghodsian, the firm has built a 15+ year track record of navigating the complex life sciences investment landscape. The **13F Portfolio Composition** data enables users to replicate disclosed holdings, normalized to a user-defined notional, to simulate historical capital trajectory and risk-adjusted outcomes for this concentrated healthcare strategy. The firm's sector-specialist approach produces investment behavior fundamentally different from diversified managers, with returns driven by biotech-specific factors including clinical catalysts, regulatory decisions, and M&A activity. The **Annualized Return (CAGR)** derived from backtested replication provides insight into long-term compounding within this high-growth, high-volatility sector, while the **Sharpe Ratio** contextualizes returns against the substantial volatility inherent in biotechnology investing. A diagnostic question for deeper analysis: How does DAFNA's portfolio positioning correlate with FDA approval cycles and biotech sector sentiment, and does the firm demonstrate consistent alpha generation across both risk-on biotech rallies and defensive healthcare rotations?
What is Dafna Capital Management Llc's AUM?
Dafna Capital Management Llc reported $440M 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 Dafna Capital Management Llc's portfolio?
Dafna Capital Management Llc holds 83 disclosed positions. The top 10 holdings represent +52.42% of the reported portfolio, indicating a highly concentrated investment approach.
How to track Dafna Capital Management Llc 13F filings?
Track Dafna Capital Management Llc'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 Dafna Capital Management Llc?
Dafna Capital Management Llc is managed by Nathan Fischel (Co-Founder / Co-Portfolio Manager), Fariba Ghodsian (Co-Founder / Co-Portfolio Manager), David Fischel (Portfolio Manager / Analyst).

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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