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JANE STREET GROUP, LLC

Position in ASPN — Aspen Aerogels Inc

CIK 1595888 NEW YORK, NY

Position in ASPN

as of Mar 31, 2026 · filed May 12, 2026
Position Value
$642,479
-$187,135 QoQ
Shares Held
187,860
-35.9% QoQ
Ownership
0.227%
of shares outstanding
% of Portfolio
0.00%
of 13F equity value
Holder Rank
not a current holder
Holding Since
Mar 2020
20 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
$392,616
CallShares
114,800
PutValue
$67,716
PutShares
19,800

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

JANE STREET GROUP, LLC holds $615,404,344 across 23 Building Products & Equipment names. ASPN ranks #13 (0.1% of the industry book) .

# Ticker Company Shares Value (USD) Open

All Filings in ASPN

Export CSV
38 filing rows on record
Report Date Value (USD) Shares
2026-03-31 $67,716 19,800
2026-03-31 $642,479 187,860
2026-03-31 $392,616 114,800
2025-12-31 $829,614 293,150
2025-12-31 $316,677 111,900
2025-09-30 $1,121,429 161,125
2025-09-30 $448,920 64,500
2025-06-30 $502,489 84,880
2025-06-30 $59,200 10,000
2025-06-30 $426,240 72,000
2025-03-31 $90,450 14,155
2025-03-31 $870,957 136,300
2025-03-31 $97,767 15,300
2024-12-31 $343,332 28,900
2024-12-31 $1,015,287 85,462
2024-12-31 $4,975,344 418,800
2024-09-30 $384,891 13,900
2024-09-30 $1,453,364 52,487
2024-09-30 $4,269,798 154,200
2024-06-30 $8,490,193 355,983
2024-03-31 $3,785,125 215,064
2023-12-31 $2,758,831 174,831
2023-06-30 $387,674 49,135
2023-03-31 $113,075 15,178
2022-12-31 $252,917 21,452
2022-06-30 $242,692 24,564
2022-03-31 $706,840 20,500
2022-03-31 $2,430,874 70,501
2021-12-31 $1,020,695 20,500
2021-12-31 $647,270 13,000
2021-12-31 $662,057 13,297
2021-09-30 $1,516,305 32,956
2021-09-30 $280,661 6,100
2021-09-30 $23,593,928 512,800
2021-06-30 $320,233 10,703
2021-06-30 $15,178,416 507,300
2020-06-30 $230,792 35,075
2020-03-31 $124,734 20,315