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Parallax Volatility Advisers, L.P.

Location
San Francisco, CA
Portfolio Value
Large $29,915,779,475
Diversification
Diversified
Filing Date
Global Rank
#208 / 8,545 ▼ 45
Top Industry
Semiconductors 13.0%
3Y Alpha vs SPY
+9.3%
Period ended 2 months ago
Filed May 15, 2026 · 18d
25 quarters · since Mar 2020

Portfolio Concentration

571 positions · as of Mar 31, 2026 · Δ vs Dec 31, 2025
Top Position
26.7%
+1.7 pts
Top 5
47.9%
+3.8 pts
Top 10
54.7%
+1.6 pts
HHI
959
Jun 2023 → Mar 2026 · range 271 – 1,864
Diversified +177

Portfolio Trend

25 quarters · across all stocks

Sector Breakdown

As of Mar 31, 2026
Sector % Portfolio Value
Unclassified 45.6% $13,653,428,631
Technology 17.1% $5,119,289,464
Financial Services 8.2% $2,464,238,613
Consumer Cyclical 7.4% $2,202,441,015
Communication Services 5.9% $1,773,274,642
Energy 5.9% $1,764,370,402
Industrials 3.6% $1,063,783,995
Consumer Defensive 1.9% $576,403,226
Basic Materials 1.7% $522,287,570
Healthcare 1.2% $363,398,731
Utilities 0.8% $231,316,803
Real Estate 0.6% $181,546,383

Last Quarter's Activity

Export CSV
Mar 31, 2026 vs Dec 31, 2025

Added To

Positions the filer increased
25 positions
Ticker Δ Shares Shares Value Open

Trimmed

Positions the filer reduced
25 positions
Ticker Δ Shares Shares Value Open

New Positions

Positions the filer opened this quarter
25 positions
Ticker Shares Value Open

Sold Out

Positions the filer fully exited
25 positions
Ticker Shares Value Open

Portfolio Positions

Export CSV View 13F filing
571 positions · $29,915,779,475 total · as of Mar 31, 2026
Showing 51–100 of 571 positions by value · page 2 of 12
Ticker Company Shares Value (USD) % of Portfolio History