PDFS — PDF SOLUTIONS INC Cmn

Ownership history in CITADEL ADVISORS LLC  ·  81 quarters on record

AI Ownership Summary

CITADEL ADVISORS LLC reported PDF SOLUTIONS INC Cmn (PDFS) in 81 quarterly 13F filings from 2023 Q3 through 2025 Q4. The latest visible filing shows PDFS at 0.00% 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 PDFS ownership page tells you

This page is designed to answer the real investor question behind a 13F filing: how meaningful was CITADEL ADVISORS LLC's position in PDF SOLUTIONS INC Cmn, 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

PDFS was reported at 0.00% of portfolio in the most recent visible filing.

High-water mark
Peak Conviction
0.0% in 2023 Q3

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

Time in book
Holding Window
2023 Q3 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.

PDFS stock page CITADEL ADVISORS LLC fund profile CITADEL ADVISORS LLC full holdings
How CITADEL ADVISORS LLC held PDFS — position size vs. price
% of Fund (quarterly)    PDFS price (quarter-end, indexed to 100)
📋 Quarterly Holdings History 25 quarters  ▾
Quarter Action Shares Change Chg % % of Fund Mkt Value Filed Price (Filed)
2025 Q4 ADDED 39,856 +2,566 +6.9% 0.00% $1.1M 2026-02-14 (Est.) $33.69
2025 Q3 ADDED 37,290 +28,590 +328.6% 0.00% $963K 2025-11-14 $25.11
2025 Q3 REDUCED 8,700 -93,376 -91.5% 0.00% $225K 2025-11-14 $25.11
2025 Q2 ADDED 102,076 +48,658 +91.1% 0.00% $2.2M 2025-08-14 $19.10
2025 Q1 ADDED 53,418 +47,018 +734.7% 0.00% $1.0M 2025-05-15 $20.49
2025 Q1 ADDED 6,400 +3,800 +146.2% 0.00% $122K 2025-05-15 $20.49
2025 Q1 REDUCED 2,600 -9,100 -77.8% 0.00% $50K 2025-05-15 $20.49
2024 Q4 ADDED 11,700 +9,500 +431.8% 0.00% $317K 2025-02-14 $22.98
2024 Q4 REDUCED 2,200 -18,611 -89.4% 0.00% $60K 2025-02-14 $22.98
2024 Q4 ADDED 20,811 +18,311 +732.4% 0.00% $564K 2025-02-14 $22.98
2024 Q3 ADDED 2,500 +2,200 +733.3% 0.00% $79K 2024-11-14 $31.09
2024 Q3 REDUCED 300 -10,000 -97.1% 0.00% $10K 2024-11-14 $31.09
2024 Q3 ADDED 10,300 +10,200 +10200.0% 0.00% $326K 2024-11-14 $31.09
2024 Q2 REDUCED 100 -53,539 -99.8% 0.00% $4K 2024-08-14 $31.75
2024 Q2 ADDED 53,639 +52,039 +3252.4% 0.00% $2.0M 2024-08-14 $31.75
2024 Q2 REDUCED 1,600 -56,681 -97.3% 0.00% $58K 2024-08-14 $31.75
2024 Q1 ADDED 58,281 +54,481 +1433.7% 0.00% $2.0M 2024-05-15 $34.39
2024 Q1 ADDED 3,800 +3,700 +3700.0% 0.00% $128K 2024-05-15 $34.39
2024 Q1 REDUCED 100 -200 -66.7% 0.00% $3K 2024-05-15 $34.39
2023 Q4 REDUCED 300 -105,454 -99.7% 0.00% $10K 2024-02-14 $33.95
2023 Q4 ADDED 105,754 +104,254 +6950.3% 0.00% $3.4M 2024-02-14 $33.95
2023 Q4 REDUCED 1,500 -130,141 -98.9% 0.00% $48K 2024-02-14 $33.95
2023 Q3 ADDED 131,641 +129,041 +4963.1% 0.00% $4.3M 2023-11-14 $30.62
2023 Q3 REDUCED 2,600 -500 -16.1% 0.00% $84K 2023-11-14 $30.62
2023 Q3 REDUCED 3,100 -1,000 -24.4% 0.00% $100K 2023-11-14 $30.62
56 older quarters hidden  —  Sign in free or upgrade to Premium to see full history

🏢 Other funds also holding PDFS

As of 2025 Q4 — sorted by position size

Samjo Management, LLC 13.61% Silverberg Bernstein Capital Management LLC 7.81% Divisar Capital Management LLC 3Y 7Y 6.09% NEEDHAM INVESTMENT MANAGEMENT LLC 3Y 7Y 3.54% Roubaix Capital, LLC 3Y 2.68% Ophir Asset Management Pty Ltd 3Y 2.31% Ranger Investment Management, L.P. 3Y 7Y 2.29% Bridge City Capital, LLC 3Y 7Y 0.86% HERALD INVESTMENT MANAGEMENT Ltd 3Y 7Y 0.84% EMERALD ADVISERS, LLC 3Y 7Y 0.83%

FAQ About CITADEL ADVISORS LLC and PDFS

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

How long has CITADEL ADVISORS LLC reported owning PDFS?

CITADEL ADVISORS LLC reported PDFS across 25 quarterly 13F filings, from 2023 Q3 through 2025 Q4.

What was the largest reported PDFS position in CITADEL ADVISORS LLC's portfolio?

The largest reported portfolio weight for PDFS was 0.00% in 2023 Q3.

What is the latest reported PDFS position on this page?

The most recent filing on this page is 2025 Q4, when CITADEL ADVISORS LLC reported 39,856 shares, equal to 0.00% of portfolio, with an estimated market value of $1.1M.

What does the chart on this PDFS ownership page compare?

The chart compares CITADEL ADVISORS LLC's quarterly PDFS 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.

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