ALDX ALDEYRA THERAPEUTICS INC

Ownership history in CITADEL ADVISORS LLC  ·  74 quarters on record

AI Ownership Summary

CITADEL ADVISORS LLC reported ALDEYRA THERAPEUTICS INC (ALDX) in 74 quarterly 13F filings from 2023 Q3 through 2025 Q4. The latest visible filing shows ALDX 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 ALDX 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 ALDEYRA THERAPEUTICS INC, 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

ALDX 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.

How CITADEL ADVISORS LLC held ALDX — position size vs. price
% of Fund (quarterly)    ALDX price (quarter-end, indexed to 100)
📋 Quarterly Holdings History 27 quarters  
Quarter Action Shares Change Chg % % of Fund Mkt Value Filed Price (Filed)
2025 Q4 ADDED 231,200 +109,500 +90.0% 0.00% $1.2M 2026-02-14 (Est.) $5.28
2025 Q4 REDUCED 121,700 -56,000 -31.5% 0.00% $630K 2026-02-14 (Est.) $5.28
2025 Q3 ADDED 177,700 +162,200 +1046.5% 0.00% $928K 2025-11-14 $5.05
2025 Q3 REDUCED 15,500 -136,754 -89.8% 0.00% $81K 2025-11-14 $5.05
2025 Q3 ADDED 152,254 +139,800 +1122.5% 0.00% $795K 2025-11-14 $5.05
2025 Q2 REDUCED 12,454 -101,346 -89.1% 0.00% $48K 2025-08-14 $5.30
2025 Q2 ADDED 113,800 +94,200 +480.6% 0.00% $436K 2025-08-14 $5.30
2025 Q1 REDUCED 19,600 -59,900 -75.3% 0.00% $113K 2025-05-15 $2.16
2025 Q1 ADDED 79,500 +15,000 +23.3% 0.00% $457K 2025-05-15 $2.16
2024 Q4 REDUCED 64,500 -21,142 -24.7% 0.00% $322K 2025-02-14 $6.49
2024 Q4 ADDED 85,642 +1,042 +1.2% 0.00% $427K 2025-02-14 $6.49
2024 Q4 ADDED 84,600 +15,200 +21.9% 0.00% $422K 2025-02-14 $6.49
2024 Q3 ADDED 69,400 +15,249 +28.2% 0.00% $374K 2024-11-14 $4.27
2024 Q3 REDUCED 54,151 -37,549 -40.9% 0.00% $292K 2024-11-14 $4.27
2024 Q3 ADDED 91,700 +82,136 +858.8% 0.00% $494K 2024-11-14 $4.27
2024 Q2 REDUCED 9,564 -78,536 -89.1% 0.00% $32K 2024-08-14 $4.69
2024 Q2 ADDED 88,100 +55,600 +171.1% 0.00% $292K 2024-08-14 $4.69
2024 Q2 ADDED 32,500 +3,800 +13.2% 0.00% $108K 2024-08-14 $4.69
2024 Q1 REDUCED 28,700 -55,300 -65.8% 0.00% $94K 2024-05-15 $4.17
2024 Q1 ADDED 84,000 +28,752 +52.0% 0.00% $275K 2024-05-15 $4.17
2024 Q1 REDUCED 55,248 -10,952 -16.5% 0.00% $181K 2024-05-15 $4.17
2023 Q4 REDUCED 66,200 -1,529 -2.3% 0.00% $232K 2024-02-14 $3.40
2023 Q4 ADDED 67,729 +45,629 +206.5% 0.00% $238K 2024-02-14 $3.40
2023 Q4 ADDED 22,100 +13,600 +160.0% 0.00% $78K 2024-02-14 $3.40
2023 Q3 REDUCED 8,500 -281,299 -97.1% 0.00% $57K 2023-11-14 $2.58
2023 Q3 ADDED 289,799 +173,699 +149.6% 0.00% $1.9M 2023-11-14 $2.58
2023 Q3 REDUCED 116,100 -25,300 -17.9% 0.00% $776K 2023-11-14 $2.58
47 older quarters hidden  —  Sign in free or upgrade to Premium to see full history

FAQ About CITADEL ADVISORS LLC and ALDX

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 ALDX?

CITADEL ADVISORS LLC reported ALDX across 27 quarterly 13F filings, from 2023 Q3 through 2025 Q4.

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

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

What is the latest reported ALDX position on this page?

The most recent filing on this page is 2025 Q4, when CITADEL ADVISORS LLC reported 231,200 shares, equal to 0.00% of portfolio, with an estimated market value of $1.2M.

What does the chart on this ALDX ownership page compare?

The chart compares CITADEL ADVISORS LLC's quarterly ALDX 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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