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CITADEL ADVISORS LLC

Position in ASPN — Aspen Aerogels Inc

CIK 1423053 MIAMI, FL

Position in ASPN

as of Mar 31, 2026 · filed May 15, 2026
Position Value
$1,987,659
-$463,737 QoQ
Shares Held
581,187
-32.9% QoQ
Ownership
0.701%
of shares outstanding
% of Portfolio
0.00%
of 13F equity value
Holder Rank
not a current holder
Holding Since
Mar 2020
23 quarters on record
Voting authority Sole 100% Shared 0% None 0%

Common Shares in ASPN Over Time

Shares Held

Position Value (USD)

Derivatives in ASPN

reported options exposure · as of Mar 31, 2026
CallValue
$511,290
CallShares
149,500
PutValue
$271,890
PutShares
79,500

Notional value of option positions as reported on Form 13F. Calls and puts are disclosed separately and do not net against the common-share stake above.

Position in Building Products & Equipment

Industrials · as of Mar 31, 2026

CITADEL ADVISORS LLC holds $1,329,748,301 across 28 Building Products & Equipment names. ASPN ranks #21 (0.1% of the industry book) .

# Ticker Company Shares Value (USD) Open

All Filings in ASPN

Export CSV
50 filing rows on record
Report Date Value (USD) Shares
2026-03-31 $271,890 79,500
2026-03-31 $511,290 149,500
2026-03-31 $1,987,659 581,187
2025-12-31 $692,218 244,600
2025-12-31 $2,451,396 866,218
2025-12-31 $494,684 174,800
2025-09-30 $1,174,152 168,700
2025-09-30 $7,757,546 1,114,590
2025-09-30 $1,138,656 163,600
2025-06-30 $497,872 84,100
2025-06-30 $965,149 163,032
2025-06-30 $955,488 161,400
2025-03-31 $3,691,886 577,760
2025-03-31 $3,557,313 556,700
2025-03-31 $1,435,833 224,700
2024-12-31 $6,544,692 550,900
2024-12-31 $7,415,852 624,230
2024-12-31 $3,673,296 309,200
2024-09-30 $5,388,474 194,600
2024-09-30 $4,740,528 171,200
2024-09-30 $11,014,666 397,785
2024-06-30 $3,932,865 164,900
2024-06-30 $15,038,759 630,556
2024-06-30 $7,798,950 327,000
2024-03-31 $1,369,280 77,800
2024-03-31 $4,331,360 246,100
2024-03-31 $920,057 52,276
2023-12-31 $1,191,390 75,500
2023-12-31 $3,043,962 192,900
2023-12-31 $4,340,335 275,053
2023-09-30 $472,140 54,900
2023-09-30 $383,560 44,600
2023-09-30 $5,743,328 667,829
2023-06-30 $3,390,001 429,658
2023-06-30 $416,592 52,800
2023-06-30 $564,135 71,500
2023-03-31 $5,107,116 685,519
2023-03-31 $955,835 128,300
2023-03-31 $442,530 59,400
2022-12-31 $585,963 49,700
2022-12-31 $2,806,809 238,067
2022-12-31 $279,423 23,700
2022-09-30 $926,609 100,500
2022-09-30 $598,378 64,900
2022-09-30 $554,122 60,100
2022-06-30 $733,096 74,200
2022-06-30 $1,089,764 110,300
2022-06-30 $549,218 55,589
2022-03-31 $2,420,496 70,200
2022-03-31 $6,614,573 191,838