Parallax Volatility Advisers, L.P. RIG — TRANSOCEAN LTD REG SHS

Ownership history in Parallax Volatility Advisers, L.P.  ·  127 quarters on record

AI Ownership Summary

Parallax Volatility Advisers, L.P. reported TRANSOCEAN LTD REG SHS (RIG) in 127 quarterly 13F filings from 2023 Q4 through 2025 Q4. Peak portfolio weight reached 0.01% in 2024 Q1. The latest visible filing shows RIG at 0.01% of the fund.

This page tracks quarterly shares, estimated market value, portfolio weight, filing dates, and disclosure-aligned stock prices directly from SEC EDGAR 13F filings. Older history is available after unlock; the visible window still shows the most recent pattern.

What this RIG ownership page tells you

This page is designed to answer the real investor question behind a 13F filing: how meaningful was Parallax Volatility Advisers, L.P.'s position in TRANSOCEAN LTD REG SHS, and how did that conviction change over time? You can read the holding window, peak weight, latest reported size, disclosure timing, and quarter-by-quarter changes without piecing the story together from raw SEC rows.

Freshest filing
Latest Reported Filing
2025 Q4

RIG was reported at 0.01% of portfolio in the most recent visible filing.

High-water mark
Peak Conviction
0.01% in 2024 Q1

Peak weight helps separate a token disclosure from a real conviction holding the fund genuinely cared about.

Time in book
Holding Window
2023 Q4 to 2025 Q4

Longer holding windows often tell a very different story from short-lived tactical trades or one-quarter experiments.

Decision context
Why It Matters
Position size beats headlines

Knowing that a fund owned a stock is useful. Knowing whether it was a 0.20% placeholder or a true high-conviction position is where the signal actually starts.

RIG stock page Parallax Volatility Advisers, L.P. fund profile Parallax Volatility Advisers, L.P. full holdings
How Parallax Volatility Advisers, L.P. held RIG — position size vs. price
% of Fund (quarterly)    RIG price (quarter-end, indexed to 100)    SPY (indexed to 100)    QQQ (indexed to 100)
📋 Quarterly Holdings History 22 quarters  ▾
Quarter Action Sold % After 3M Timing Shares Change Chg % % of Fund Mkt Value Filed Price (Filed)
2025 Q4 REDUCED — — — 728,400 -22,200 -3.0% 0.01% $3.0M 2026-02-14 (Est.) $6.54
2025 Q4 ADDED — — — 750,600 +605,735 +418.1% 0.01% $3.1M 2026-02-14 (Est.) $6.54
2025 Q3 REDUCED 77.2% +30.4% ❌ 144,865 -490,135 -77.2% 0.00% $452K 2025-11-14 $4.01
2025 Q3 ADDED — — — 635,000 +495,000 +353.6% 0.00% $2.0M 2025-11-14 $4.01
2025 Q3 REDUCED 40.5% +30.4% ❌ 140,000 -95,443 -40.5% 0.00% $437K 2025-11-14 $4.01
2025 Q2 REDUCED 59.8% +20.1% ❌ 235,443 -349,557 -59.8% 0.00% $610K 2025-08-14 $3.01
2025 Q2 ADDED — — — 585,000 +350,700 +149.7% 0.00% $1.5M 2025-08-14 $3.01
2025 Q2 ADDED — — — 234,300 +102,185 +77.3% 0.00% $607K 2025-08-14 $3.01
2025 Q1 REDUCED 65.7% -18.3% ✅ 132,115 -252,885 -65.7% 0.00% $419K 2025-05-15 $2.66
2025 Q1 ADDED — — — 385,000 +370,577 +2569.3% 0.00% $1.2M 2025-05-15 $2.66
2024 Q4 REDUCED 98.6% -15.5% ✅ 14,423 -988,377 -98.6% 0.00% $54K 2025-02-14 $3.53
2024 Q4 ADDED — — — 1,002,800 +799,900 +394.2% 0.01% $3.8M 2025-02-14 $3.53
2024 Q4 ADDED — — — 202,900 +190,845 +1583.1% 0.00% $761K 2025-02-14 $3.53
2024 Q3 REDUCED 98.8% -13.9% ✅ 12,055 -992,845 -98.8% 0.00% $51K 2024-11-14 $4.46
2024 Q3 ADDED — — — 1,004,900 +812,700 +422.8% 0.01% $4.3M 2024-11-14 $4.46
2024 Q3 REDUCED 80.9% -13.9% ✅ 192,200 -812,700 -80.9% 0.00% $817K 2024-11-14 $4.46
2024 Q2 ADDED — — — 1,004,900 +857,100 +579.9% 0.01% $5.4M 2024-08-14 $5.05
2024 Q2 REDUCED 85.2% -20.6% ✅ 147,800 -852,200 -85.2% 0.00% $791K 2024-08-14 $5.05
2024 Q1 ADDED — — — 1,000,000 +850,000 +566.7% 0.01% $6.3M 2024-05-15 $6.04
2024 Q1 REDUCED 85.0% -19.6% ✅ 150,000 -850,000 -85.0% 0.00% $942K 2024-05-15 $6.04
2023 Q4 ADDED — — — 1,000,000 +849,300 +563.6% 0.01% $6.3M 2024-02-14 $5.17
2023 Q4 REDUCED 84.9% +0.3% ❌ 150,700 -849,300 -84.9% 0.00% $957K 2024-02-14 $5.17
105 older quarters hidden  —  Sign in free or upgrade to Premium to see full history

🏢 Other funds also holding RIG

As of 2026 Q1 — sorted by position size

CWA Asset Management Group, LLC 3Y 7Y 1.17% Merrion Investment Management Co, LLC 3Y 0.33% Canoe Financial LP 3Y 0.32% Hosking Partners LLP 3Y 7Y 0.31% KEYBANK NATIONAL ASSOCIATION/OH 3Y 7Y 0.31% Murphy Pohlad Asset Management LLC 3Y 7Y 0.18% Fruth Investment Management 3Y 7Y 0.17% Bayforest Capital Ltd 0.17% Ground Swell Capital, LLC 3Y 7Y 0.16% Triasima Portfolio Management inc. 3Y 0.14%

FAQ About Parallax Volatility Advisers, L.P. and RIG

These are the practical questions this page is built to answer before you even open the full history table.

How long has Parallax Volatility Advisers, L.P. reported owning RIG?

Parallax Volatility Advisers, L.P. reported RIG across 22 quarterly 13F filings, from 2023 Q4 through 2025 Q4.

What was the largest reported RIG position in Parallax Volatility Advisers, L.P.'s portfolio?

The largest reported portfolio weight for RIG was 0.01% in 2024 Q1.

What is the latest reported RIG position on this page?

The most recent filing on this page is 2025 Q4, when Parallax Volatility Advisers, L.P. reported 728,400 shares, equal to 0.01% of portfolio, with an estimated market value of $3.0M.

What does the chart on this RIG ownership page compare?

The chart compares Parallax Volatility Advisers, L.P.'s quarterly RIG portfolio weight with the stock's indexed share price, so you can see whether the fund was building, trimming, or holding the position as price moved.

How well did Parallax Volatility Advisers, L.P. time their RIG position?

Based on 13F filing dates vs. subsequent RIG price moves, Parallax Volatility Advisers, L.P. correctly timed 53 out of 126 reported position changes (42%). The annualised alpha on RIG relative to SPY over the holding period was -1.1%.

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