Parallax Volatility Advisers, L.P. BIDU — BAIDU INC SPON ADR REP A

Ownership history in Parallax Volatility Advisers, L.P.  ·  154 quarters on record

AI Ownership Summary

Parallax Volatility Advisers, L.P. reported BAIDU INC SPON ADR REP A (BIDU) in 154 quarterly 13F filings from 2023 Q4 through 2026 Q1. Peak portfolio weight reached 0.09% in 2025 Q4. The latest visible filing shows BIDU 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 BIDU 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 BAIDU INC SPON ADR REP A, 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
2026 Q1

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

High-water mark
Peak Conviction
0.09% in 2025 Q4

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 2026 Q1

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.

BIDU stock page Parallax Volatility Advisers, L.P. fund profile Parallax Volatility Advisers, L.P. full holdings
How Parallax Volatility Advisers, L.P. held BIDU — position size vs. price
% of Fund (quarterly)    BIDU price (quarter-end, indexed to 100)    SPY (indexed to 100)    QQQ (indexed to 100)
📋 Quarterly Holdings History 26 quarters  ▾
Quarter Action Sold % After 3M Timing Shares Change Chg % % of Fund Mkt Value Filed Price (Filed)
2026 Q1 ADDED — — — 26,000 +7,077 +37.4% 0.01% $2.9M 2026-05-15 $135.33
2026 Q1 REDUCED — — — 18,923 -68,177 -78.3% 0.01% $2.1M 2026-05-15 $135.33
2026 Q1 REDUCED — — — 87,100 -243,000 -73.6% 0.03% $9.7M 2026-05-15 $135.33
2025 Q4 ADDED — — — 330,100 +147,300 +80.6% 0.09% $43.1M 2026-02-17 $137.33
2025 Q4 REDUCED 32.5% -14.7% ✅ 182,800 -88,200 -32.5% 0.05% $23.9M 2026-02-17 $137.33
2025 Q3 ADDED — — — 271,000 +155,600 +134.8% 0.05% $35.7M 2025-11-14 $116.00
2025 Q3 ADDED — — — 115,400 +14,031 +13.8% 0.02% $15.2M 2025-11-14 $116.00
2025 Q3 REDUCED 62.3% -3.8% ✅ 101,369 -167,531 -62.3% 0.02% $13.4M 2025-11-14 $116.00
2025 Q2 ADDED — — — 268,900 +210,721 +362.2% 0.05% $23.1M 2025-08-14 $88.73
2025 Q2 REDUCED 9.8% +57.2% ❌ 58,179 -6,321 -9.8% 0.01% $5.0M 2025-08-14 $88.73
2025 Q2 REDUCED 51.4% +57.2% ❌ 64,500 -68,200 -51.4% 0.01% $5.5M 2025-08-14 $88.73
2025 Q1 ADDED — — — 132,700 +132,000 +18857.1% 0.03% $12.2M 2025-05-15 $89.19
2025 Q1 REDUCED 96.2% -6.8% ✅ 700 -17,683 -96.2% 0.00% $64K 2025-05-15 $89.19
2025 Q1 REDUCED 91.0% -6.8% ✅ 18,383 -186,417 -91.0% 0.00% $1.7M 2025-05-15 $89.19
2024 Q4 ADDED — — — 204,800 +125,231 +157.4% 0.03% $17.3M 2025-02-14 $97.48
2024 Q4 ADDED — — — 79,569 +32,269 +68.2% 0.01% $6.7M 2025-02-14 $97.48
2024 Q4 REDUCED 9.6% +9.2% ❌ 47,300 -5,000 -9.6% 0.01% $4.0M 2025-02-14 $97.48
2024 Q3 REDUCED 72.9% -20.2% ✅ 52,300 -141,000 -72.9% 0.01% $5.5M 2024-11-14 $84.06
2024 Q3 ADDED — — — 193,300 +58,200 +43.1% 0.04% $20.4M 2024-11-14 $84.06
2024 Q2 ADDED — — — 135,100 +84,272 +165.8% 0.03% $11.7M 2024-08-14 $83.99
2024 Q2 REDUCED 69.2% +21.8% ❌ 50,828 -114,272 -69.2% 0.01% $4.4M 2024-08-14 $83.99
2024 Q2 ADDED — — — 165,100 +146,200 +773.5% 0.03% $14.3M 2024-08-14 $83.99
2024 Q1 REDUCED 89.0% -18.1% ✅ 18,900 -152,700 -89.0% 0.00% $2.0M 2024-05-15 $110.75
2024 Q1 ADDED — — — 171,600 +14,100 +9.0% 0.04% $18.1M 2024-05-15 $110.75
2023 Q4 ADDED — — — 157,500 +124,400 +375.8% 0.04% $18.8M 2024-02-14 $106.71
2023 Q4 ADDED — — — 33,100 +30,812 +1346.7% 0.01% $3.9M 2024-02-14 $106.71
128 older quarters hidden  —  Sign in free or upgrade to Premium to see full history

🏢 Other funds also holding BIDU

As of 2026 Q1 — sorted by position size

OPTIMAS CAPITAL Ltd 3Y 19.29% Polunin Capital Partners Ltd 3Y 7Y 8.33% TT International Asset Management LTD 3Y 7.63% North of South Capital LLP 7.4% Black Creek Investment Management Inc. 3Y 7Y 5.57% AI-Squared Management Ltd 5.23% Niles Investment Management, LLC 3.26% CONTRARIAN CAPITAL MANAGEMENT, L.L.C. 3Y 7Y 3.19% Quaker Capital Investments, LLC 3Y 7Y 2.89% Rheos Capital Works Inc. 3Y 7Y 2.62%

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

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 BIDU?

Parallax Volatility Advisers, L.P. reported BIDU across 26 quarterly 13F filings, from 2023 Q4 through 2026 Q1.

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

The largest reported portfolio weight for BIDU was 0.09% in 2025 Q4.

What is the latest reported BIDU position on this page?

The most recent filing on this page is 2026 Q1, when Parallax Volatility Advisers, L.P. reported 26,000 shares, equal to 0.01% of portfolio, with an estimated market value of $2.9M.

What does the chart on this BIDU ownership page compare?

The chart compares Parallax Volatility Advisers, L.P.'s quarterly BIDU 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 BIDU position?

Based on 13F filing dates vs. subsequent BIDU price moves, Parallax Volatility Advisers, L.P. correctly timed 86 out of 152 reported position changes (57%). The annualised alpha on BIDU relative to SPY over the holding period was -12.2%.

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