Hedge Fund

Nantahala Capital Management, LLC

New Canaan, CT SEC Registered Investment Advisor Institutional CIK: 0001472322
13F Score ?
9
3Y · Top 10 · Mgr Wt
13F Score ?
5
7Y · Top 10 · Mgr Wt
S&P 500 ?
80
Benchmark
$2.72B
AUM
+0.42%
2026 Q1
+5.45%
1-Year Return
+40.44%
Top 10 Concentration
+14.44%
Turnover
-10.20%
AUM Change
Since 2011
First Filing
152
# of Holdings

Fund Overview

13F Filed: 2026-05-15

As of 2026 Q1, Nantahala Capital Management, Llc manages $2.72B in reported 13F assets , holds 152 positions with +40.44% top-10 concentration , and delivered a 1-year return of +5.45% on its disclosed equity portfolio. Filing 13F reports since 2011.

About

Investment Strategy

Analytics Summary

Risk Profile

Key Personnel

Wilmot B. Harkey — Managing Partner & Co-Chief Investment Officer
Daniel Mack — Managing Partner & Co-Chief Investment Officer
Quasar Johnston — Partner & Portfolio Manager
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
CALL Option
+1.36%
CALL Option
+0.95%
+0.74%
+0.67%
+0.57%
N/A AGOMAB THERAPEU..
+0.47%

Top Sells

% $
Stock % Impact
PUT Option
-5.75%
PUT Option
-3.29%
CALL Option
-1.21%
Sold All 😨 Was: 1.01% -1.12%
Sold All 😨 Was: 0.84% -0.94%
-0.93%

Top Holdings

2026 Q1
Stock %
PUT Option
18.72%
CALL Option
3.03%
CALL Option
2.83%
2.73%
CALL Option
2.49%
PUT Option
2.36%
View All Holdings

Activity Summary

Latest
Market Value $2.72B
AUM Change -10.20%
New Positions 17
Increased Positions 43
Closed Positions 22
Top 10 Concentration +40.44%
Portfolio Turnover +14.44%
Alt Turnover +20.56%

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

Nantahala 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
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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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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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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: Nantahala 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 Nantahala Capital Management, LLC's top 10 holdings against SPY identified 40 underperformance periods. Worst drawdown: 2023-09 – 2023-12 (-32.8% vs SPY, 4 quarters).

Avg. lag: -10.3% vs SPY Avg. duration: 2.1 quarters
Backtest Snapshot — Top 10 Holdings (Mn-Weighted)

The ticker-level breakdown shows how each of Nantahala 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: SLNO (2023 Q4 – 2025 Q4, +13.1 pts), PTON (2023 Q1 – 2024 Q4, +11.0 pts), BVS (2023 Q3 – 2025 Q4, +9.2 pts), IMAX (2021 Q2 – 2025 Q2, +6.3 pts), CASH (2021 Q2 – 2024 Q2, +6.3 pts) .

Strategy ann.: 9.7% SPY ann.: 14.8% Period: 2012–2026
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.
2023 Q4 – 2025 Q4 • 9Q in Top 10 Lagged SPY
SLNO
+12%
SPY
+52%
Contrib
+13.1%
2023 Q1 – 2024 Q4 • 5Q in Top 10 Beat SPY
PTON
+62%
SPY
+23%
Contrib
+11.0%
2023 Q3 – 2025 Q4 • 10Q in Top 10 Beat SPY
BVS
+181%
SPY
+70%
Contrib
+9.2%
2021 Q2 – 2025 Q2 • 16Q in Top 10 Beat SPY
IMAX
+153%
SPY
+46%
Contrib
+6.3%
2021 Q2 – 2024 Q2 • 13Q in Top 10 Beat SPY
CASH
+62%
SPY
+39%
Contrib
+6.3%
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 Nantahala Capital Management, Llc invest in?
Nantahala Capital Management employs an event-driven investment approach centered on identifying mispriced securities where specific catalysts can unlock value. The firm's strategy emphasizes intensive fundamental research, focusing on situations where complexity or investor inattention creates pricing inefficiencies. This opportunistic framework spans corporate restructurings, merger arbitrage, spin-offs, recapitalizations, and other special situations that require specialized analytical capabilities. The **13F Portfolio Composition** reveals a diversified portfolio of small and mid-cap positions concentrated in healthcare, technology, and consumer sectors—industries that frequently produce the corporate events and strategic transactions central to the firm's approach. Position sizing reflects conviction levels derived from proprietary research, with the portfolio exhibiting higher concentration than index-oriented strategies while maintaining diversification across multiple independent event catalysts. The firm's **Sector Allocation History** demonstrates opportunistic rotation based on event-driven opportunity availability rather than top-down sector views. Healthcare holdings often feature biotechnology and specialty pharmaceutical companies involved in M&A activity or clinical catalysts, while technology positions may reflect restructuring situations or strategic sale processes. The **Top 10 Holdings Concentration** provides insight into the firm's highest-conviction positions where catalyst timing and probability assessments support meaningful capital allocation.
What is Nantahala Capital Management, Llc's AUM?
Nantahala Capital Management, Llc reported $2.72B 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 Nantahala Capital Management, Llc's portfolio?
Nantahala Capital Management, Llc holds 152 disclosed positions. The top 10 holdings represent +40.44% of the reported portfolio, indicating a diversified investment approach.
How to track Nantahala Capital Management, Llc 13F filings?
Track Nantahala 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 Nantahala Capital Management, Llc?
Nantahala Capital Management, Llc is managed by Wilmot B. Harkey (Managing Partner & Co-Chief Investment Officer), Daniel Mack (Managing Partner & Co-Chief Investment Officer), Quasar Johnston (Partner & Portfolio Manager).

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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