Parallax Volatility Advisers, L.P.

View all activity View 13F on SEC

Data as of Q4 2025

Institutional investor tracked via SEC 13F filings. Portfolio snapshot as of 2025-12-31.SEC EDGAR Source

Assets Under Management

$3.2B

Total Positions

577

New This Quarter

200

Filing Period

2025-12-31

Portfolio Allocation

Top holdings by portfolio weight

AXP0.54%

IWM0.30%

TSLA0.29%

GLD0.26%

SPY0.18%

GE0.17%

PLTR0.14%

MS0.13%

AVGO0.12%

WFC0.10%

Other0.91%

Position Outcomes

Best and worst performing positions by estimated return

Top Winners

PBI15Q held

PITNEY BOWES INC

Avg $2.66 · $2.4M est. P&L

Est. P&L

+299.87%

INSM8Q held

Insmed Inc

Avg $66.99 · $202,413 est. P&L

Est. P&L

+159.86%

GEV7Q held

GE Vernova Inc

Avg $261.31 · $28M est. P&L

Est. P&L

+152.25%

Top Losers

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View plans

Cost basis estimates based on full filing history using quarter-end prices. Actual transaction prices are not disclosed in 13F filings.

Top Holdings(Showing 25 of 543 — sorted by value)

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Activity:

Stock	Shares	Value	Weight	Price Trend	Avg Buy	Est. P&L	Held	Conviction
AXP American Express Co	733,883	$271.5M	0.5%	—	$372.56	0.00%	1 qtr	New 60
IWM ISHARES TR	625,766	$154M	0.3%	—	$248.03	0.00%	1 qtr	New 50
TSLA Tesla Inc	321,611	$144.6M	0.3%	—	$445.81	+1.93%	2 qtrs	Increased 46
GLD SPDR GOLD TR	337,377	$133.7M	0.3%	—	$352.46	+13.17%	2 qtrs	Decreased 0
SPY SPDR S&P 500 ETF TR	134,473	$91.7M	0.2%	—	$687.01	0.00%	1 qtr	New 49
GE GE AEROSPACE	271,716	$83.7M	0.2%	—	$239.96	+29.94%	16 qtrs	Increased 45
PLTR Palantir Technologies Inc	401,108	$71.3M	0.1%	—	$158.76	+13.91%	6 qtrs	Decreased 0
MS Morgan Stanley	376,397	$66.8M	0.1%	—	$169.87	+4.84%	2 qtrs	Increased 57
AVGO Broadcom Inc	171,818	$59.5M	0.1%	—	$340.66	+2.70%	2 qtrs	Increased 57
WFC Wells Fargo & Co	553,377	$51.6M	0.1%	—	$81.83	+14.69%	5 qtrs	Increased 47
NET Cloudflare Inc	252,397	$49.8M	0.1%	—	$133.01	+50.08%	8 qtrs	Decreased 0
BABA ALIBABA GROUP HLDG LTD	337,770	$49.5M	0.1%	—	$141.42	+4.20%	5 qtrs	Increased 47
CRWD Crowdstrike Holdings Inc	98,359	$46.1M	0.1%	—	$435.44	+9.23%	15 qtrs	Increased 31
GEV GE Vernova Inc	70,328	$46M	0.1%	—	$261.31	+152.25%	7 qtrs	Decreased 0
C Citigroup Inc	315,393	$36.8M	0.1%	—	$89.33	+30.53%	5 qtrs	Decreased 0
CMG Chipotle Mexican Grill Inc	801,739	$29.7M	0.1%	—	$37.04	0.00%	1 qtr	New 40
DDOG Datadog Inc	215,814	$29.3M	0.1%	—	$141.33	-2.72%	5 qtrs	Increased 46
ORCL Oracle Corp	125,989	$24.6M	0.0%	—	$167.25	+17.60%	7 qtrs	Increased 35
TSM TAIWAN SEMICONDUCTOR MFG LTD	77,052	$23.4M	0.0%	—	$272.49	+9.94%	2 qtrs	Decreased 0
SNOW Snowflake Inc	105,773	$23.2M	0.0%	—	$225.25	-1.42%	2 qtrs	Decreased 0
ARM ARM Holdings PLC	210,570	$23M	0.0%	—	$133.20	-16.77%	5 qtrs	Increased 43
PDD PDD Holdings Inc	187,904	$21.3M	0.0%	—	$113.83	0.00%	1 qtr	New 39
TWLO Twilio Inc	140,919	$20M	0.0%	—	$80.86	+78.25%	7 qtrs	Decreased 0
SHOP Shopify Inc	120,421	$19.4M	0.0%	—	$139.22	+17.61%	11 qtrs	Increased 29
VST Vistra Corp	120,021	$19.4M	0.0%	—	$165.54	-1.76%	2 qtrs	Increased 46
Showing 25 of 543 results.PROUpgrade to see all →

Accumulation Streaks

Positions with 2+ consecutive quarters of increases — persistent directional conviction.

Security

LMNDLEMONADE INC C

Q3 2024 → Q4 2025+60,352 shares+$4.8M

THTARGET HOSPITALITY CORP

Q1 2025 → Q4 2025+25,422 shares+$201,278

HLFHERBALIFE LTD C

Q2 2025 → Q4 2025+320,374 shares+$4.5M

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Data sourced from SEC EDGAR 13F filings. Not financial advice. Full disclaimer